The electrical circuit is a document in which the GOST rules denote the links between the components of the devices operating by the flow of electricity. As you understand, this drawing gives an understanding of electricians about how the installation works and from which items it consists. The main purpose of the power grid is help in connecting installations, as well as troubleshooting in the chain. Next, we will tell you what types and types of electrical schemes are provided by providing short description, characteristics and examples of each variety.

General classification

To begin with, it should be understood that they are implied under the types, and what under the types of documents. So, according to GOST 2.701-84, there are the following types of schemes (in brackets brief designation):

1. Electric (E).
2. Hydraulic (g).
3. Pneumatic (P).
4. Gas (x).
5. Kinematic (k).
6. Vacuum (B).
7. Optical (L).
8. Energy (P).
9. Division (e).
10. Combined (C).

What concerns the types, the main things are considered:

1. Structural (1).
2. Functional (2).
3. Principal (full) (3).
4. Compounds (assembly) (4).
5. Connections (5).
6. General (6).
7. Location (7).
8. United (8).

Based on the specified designations, it is possible to understand its type and type by the name of the electrical circuit. As an example, a document with the name E3 is a circuit diagram. It looks like this:

Next, we will consider in detail, the purpose and composition of each of the listed types of electricity. We recommend that it is recommended to familiarize yourself with that it is even easier to understand what each version of the drawing represents.

Purpose of each electrochma

This type of document is the most simple and gives an understanding about how electrical installation works and what it consists of. Graphic image All chain elements make it possible to initially see the common picture to switch to a more complex connection process or repair. The reading order is denoted by the arrows and explaining inscriptions, which makes it possible to understand the structural electrical circuit even the novice electrician. You can see the principle of construction on the example below:

The functional installation of the installation is essentially not too different from the structural. The only difference is more detailed description All components of the chain nodes. It looks like this document as follows:

Principal

The concept of electrical circuit is most often used in distribution networks, because Gives the most discovered explanation of how the electrical equipment under consideration works. On such a drawing, all functional circuits and the type of communication between them should be specified. In turn, the fundamental electrical system can have two varieties: one-centered or complete. In the first case, the drawing shows only the primary networks, also called power. An example of a single-line image you can see below:

The complete schematic diagram can be deployed or element. If the electrical installation is simple and one main drawing can be applied to all explanations, it suffices to make a detailed plan. If you are dealing with complex equipment that has a control circuit, automation and measurement, it is better to break all the individual nodes to different sheets in order not to get confused.

There is also a fundamental electrical processing product. This type of document is a kind of sawing from a common plan, on which it is designated only, as a specific node works from what it consists of.

Mounting

We most often use this type of electrical circuits on the site when we tell about how to perform yourself. The fact is that on the mounting electrical power, it is possible to show the exact location of all elements of the chain, the method of their compound, as well as the alphanumeric characteristics of the components of the installation drawing. If we take for an example, we will see it, where you need to place sockets, switches, lamps and other products.

The main purpose of the mounting scheme is a guide for electrical work. According to the prepared drawing, you can understand where what and how to connect.

By the way, the installation of the compounds, which is intended to connect electrical equipment, as well as connections to the installations between themselves within one chain are also considered the assembly. When you are guided by the mounting scheme.

Well, the last of the electrical component used in distribution networks is combined, which may include several types and types of documents. It is used in the event that it is possible to designate all the important features of the chain without a strong journey of the drawing. Use the combined project most often in enterprises. Home masters This type of scheme is unlikely to meet. An example you can see below:

There is also a scheme of cable trails, which is a simplified layout plan for cable lines to distribution points and transformer substations. Its appointment is similar to the mounting electrical power - with the help of this document, the installers are guided by how to lead the line from point A to the point B.

GOST 2.701-84.

Interstate standard

Unified system of design documentation

SCHEMES

Types and types. General requirements for implementation

IPK Publishing Standards

Moscow

Interstate standard

Resolution of the USSR State Committee on Standards on August 29, 1984 No. 3038 Date of Introduction

01.07.85

This standard applies to the schemes performed by manually or automated method, products of all industries, as well as electrical schemes of energy facilities (electrical stations, electrical equipment of industrial enterprises, etc.), establishes types and types of schemes and general requirements for their implementation. Explanatory terms used in the standard are given in Appendix 1. The standard fully corresponds to ST SEV 651-77.

1. Types and types of schemes

1.1. Schemes depending on the types of elements and connections that are part of the product (installation) are divided into the following types: - electric; - hydraulic; - pneumatic; - gas (except pneumatic); - kinematic; - vacuum; - optical; - energy; - divisions; - Combined. Notes: 1. For the product, which includes elements different species, There are several schemes of the corresponding species of one type, for example, an electrical circuit diagram of a hydraulic and one combined diagram containing elements and communication of different types.2. The diagram of one species allows you to depict the elements of the schemes of another type that directly affect the operation of the scheme of this species, as well as elements and devices that are not included in the product (installation), to which (which) make up the scheme, but necessary to clarify the principles of the product (installation ). Graphic designations of such elements and devices are separated on the diagram of barc-dotted lines, equal to the thickness of the communication lines, and placed inscriptions, indicating the location of these elements, as well as the necessary data.3. The product division scheme for components (division scheme) is issued to determine the composition of the product. 1.2. Schemes, depending on the main purpose, are divided into the following types: - structural; - functional; - fundamental (full); - compounds (assembly); - connections; - general; - location; - United. Note. The names of the schemes specified in brackets are set for electrical schemes of energy facilities. 1.3. The name and code of the circuits are determined by their type and type. The name of the circuit combined is determined combined species scheme diagrams and types. The name of the scheme is determined by the type of circuit and the combined types of the circuit. The schema code should consist of an alphabetic part that determines the form of a circuit, and a digital part that defines the type of schema. Types of schemes are denoted by letters: - electric - e; - hydraulic - g; - pneumatic - n; - gas (except pneumatic) - x; - kinematic - k; - Vacuum - in; - optical - l; - energy - p; - division - e; - Combined - S. Types of schemes indicate numbers: - Structural - 1; - functional - 2; - fundamental (full) - 3; - compounds (assembly) - 4; - Connections - 5; - General - 6; - location - 7; - Combined - 0. For example, an electrical principal scheme - E3; Scheme Hydraulic compounds - G4; The division of the structural - E1; Electro-hydraulic principal scheme - C3; Electrohydropnemopnematic circuit breaker - C3; Electrical circuit and connections - E0; Scheme hydraulic structural, principled and compounds - g0. Schemes or instead of schemes in cases established by the rules for performing specific types of schemes are issued in the form of independent documents of the table containing information about the location of devices, connections, connecting places and other information. Such documents are assigned a code consisting of the letter T and the code of the corresponding scheme. For example, the code code of the compounds to the electrical circuit of the compounds is TE4. In the main inscription (graph 1) of the document indicate the product name, as well as the name of the document "Connection Table". Connection tables are recorded in the specification after the schemes to which they are released, or instead of them. Notes: 1. It is allowed to develop schemes combined when information is placed on the diagrams of the same type, for example, on the product connection diagram (settings) show its external connections. The rules set for the schemes of the corresponding types should be performed. The nomenclature, names and codes of combined circuits must be established in industry standards. 2. If in connection with the peculiarities of the product (installation) the amount of information necessary for its design, adjustment, control, repair and operation can not be transferred in the documentation set in the schemes of established species and types, then the schemes of other types and types are allowed. The nomenclature, names and codes of other schemes must be installed in industry standards. 3. The product (installation) is allowed to perform a diagram of a certain type and type on several sheets or instead of a single schema of a certain type and type, perform a set of schemes of the same type and type. At the same time, each diagram must be framed as an independent document. When the product is released on a product (installation) of several schemes, the name of the functional circuit or the functional group (for example, the electrical power circuit diagram is allowed (for example, an electric power circuit diagram, a diagram of hydraulic concept, a diagram of hydraulic principal Lubricants, hydraulic circuit cooling circuit). In this case, each scheme is assigned the designation according to GOST 2.201-80, as an independent design document and, starting with the second scheme, the sequence numbers are added to the scheme code in the designation (for example, ABVG.HHHXXXX.HHHHE3, ABBH .1; ABBG.Hhkhhhh.hkhhg3, ABBG.Hhkhhhh.hhhg3.1, ABBH.Hhkhhhh.hhhg3.2). 4. The table of conformity of the types of electrical schemes for this standard and ST SEV 527-77 is given in Appendix 2.

2. General requirements for implementation

2.1. Set (nomenclature) schemes2.1.1. The nomenclature of the schemes on the product should be determined depending on the features of the product (installation). The number of types of schemes on the product (installation) must be minimal, but in the aggregate, they must contain information in the amount sufficient to design, manufacture, operate and repair the product (installation). 2.1.2. There should be a unambiguous communication between the schemes of one set of design documents on the product (installation), which would ensure the possibility of quickly finding the same elements (devices, functional groups), connections or connections in all diagrams of this kit. 2.2. Formats 2.2.1. The formats of sheets of schemes are chosen in accordance with the requirements set in GOST 2.301-68 and GOST 2.004-88, while the main formats are preferred. When choosing formats, it should be considered: 1) the volume and complexity of the projected product (installation); 2) the desired degree of data detail due to the purpose of the scheme; 3) conditions for storing and circulating schemes; 4) features and possibilities of equipment execution, reproduction and (or) microfilming schemes; 5) the possibility of processing schemes by means of computing equipment. The selected format must provide a compact implementation of the scheme without violating its visibility and ease of use. 2.3. Construction of circuit 2.3.1. Schemes perform without compliance with the scale, the actual spatial arrangement of the components of the product (installation) do not take into account or take into account approximately.2.3.2. Graphic designations of elements (devices, functional groups) and their connecting links should be positioned in the diagram in such a way as to ensure the best idea of \u200b\u200bthe structure of the product and the interaction of its component parts. Notes: 1. It is allowed to place the conditional graphic designations of elements (devices, functional groups) in the diagram in the same order in which they are located in the product, provided that this will not break the readability of the circuit. 2. If there are several identical elements (devices, functional groups), connected in parallel, it is allowed instead of the image of all the branches of the parallel compound, to portray only one branch, indicating the number of branches with the assistance of branch. Near the graphic designations (devices, functional groups) shown in one branch, they put their designations. This should take into account all elements, devices or functional groups included in this parallel compound (features. one).

Heck. one

Elements in this case are recorded in the list of items in one line. 3. If there are three and more identical elements (devices, functional groups), connected sequentially, it is allowed instead of the image of all successively connected elements (devices, functional groups) to portray only the first and last elements (devices, functional groups), showing the links between with them box lines. When assigning elements (devices, functional groups) of the designations, elements (devices, functional groups) must be taken into account, which are not shown in the diagram (damn 2). Over the stroke line, the total number of identical elements indicate the total number of identical elements. Elements in this case are recorded in the list of items in one line. 4. Schemes are allowed to perform within the consequent contour, simplifically depicting the design of the product. In these cases, the conventions are performed by lines equal to the thickness of the communication lines. 2.3.3. When performing a scheme on several sheets or in the form of a set of single type schemes, it is recommended: 1) for schemes intended for explanation of the principles of the product (functional, fundamental), represent a specific functional group on each sheet or on each diagram (line, tract etc.); 2) for schemes intended for determining compounds (connections diagram), portray on each sheet or on each scheme part of the product (installation) located in a certain place of space or a specific functional chain. 2.3.4. The distance (lumen) between the two adjacent graphic notation lines should not be 1.0 mm. The distance between adjacent parallel communication lines must be at least 3.0 mm. The distance between the individual conventional graphics should be at least 2.0 mm. 2.3.5. Devices with an independent principal scheme are performed in schemes in the form of a figure with a solid line equal to the thickness of the communication lines. Note. It is allowed to perform devices in the form of a figure of a line twice the thickness of the communication line. 2.3.6. A functional group or a device that does not have an independent concept is performed on diagrams in the form of a figure of contour bar-dotted lines equal to the thickness of the communication lines. Note to PP. 2.3.5 - 2.3.6. The figure defined by the contour line, as a rule, should be a rectangle. It is allowed to allocate parts of the diagram of the figures of the indirectal form. 2.3.7. When designing a product in which several different devices include, each device is recommended to perform an independent concept. On devices that can be applied in other products (installations) or independently, independent schemes should be performed. 2.3.8. When designing a product circuit (installation), which includes devices having independent concepts, each such device is considered as a product schema element and depict it in the form of a rectangle or conditional graphic designation, it is assigned to the positional designation and write to the list of elements by one position. Notes: 1. If there are several devices that do not have independent concepts, or functional groups in the product (installation), then the scheme of these devices or functional groups is allowed on the product circuit (installation). In this case, the device or functional group is depicted as a rectangle, and the scheme of such a device or functional group is depicted inside one of the rectangles (larger) or placed on the field of the scheme with an appropriate inscription, for example: "block of the ABBC. 2. When performing a schematic diagram on multiple sheets, the following requirements should be performed: 1) when assigning items to elements of positional designations, it is observed through the numbering within the product (installation); 2) the list of elements must be common; 3) Separate elements are allowed to re-display on other sheets of the scheme, while maintaining the positional notation assigned to them on one of the sheets of the circuit. 3. When developing on one product, several independent schematic diagrams should follow the following requirements: 1) the positional designations are assigned by the rules set in the note; 2) in each diagram there must be a list of only those elements, the positional notation by which are assigned on this scheme; 3) Separate elements are allowed to re-display in several schemes, retaining the positional notation assigned to them on one of the schemes. In this case, the schemes are placed in the type of type: "The elements depicted in the diagram and not included in the list of elements, see the ABBG.HHHXXXX.HHHH33 or" Hydroclap K1 and K5 cm. ABBG. 2.4. Graphic notation 2.4.1. When performing schemes, the following graphic notation is applied: 1) conditional graphics notation set in the standard design documentation standards, as well as based on them; 2) rectangles; 3) Simplified external outlines (including axonometric). If necessary, use non-standardized conventional graphic notation. When using non-standardized conditional graphic designations and the outlined external outlines, the corresponding explanations are given in the diagram. Conditional graphics symbols for which several permissible (alternative) embodiments, differ in the geometric form or degree of detail, should be applied, based on the type and type of scheme being developed, depending on the information that must be transmitted in the graphics scheme. At the same time, one selected designation option should be applied to all the diagrams of one type of documentation. Application in schemes of certain graphic designations determine the rules for performing a certain type and type schemes. 2.4.2. Conditional graphic designations of elements are depicted in the sizes installed in standards on conditional graphic notation. Conditional graphic notation, the ratios of the dimensions of which are given in the corresponding standards on the modular grid, should be depicted in the diagrams in the sizes determined by vertical and horizontally by the number of steps of the modular mesh m (features 2a). At the same time, the modular grid step for each circuit can be any, but the same for all elements and devices of this circuit. Conditional graphic designations of elements whose dimensions are not established in these standards should be depicted in the diagram in the sizes in which they are implemented in the relevant standards on conditional graphics. The dimensions of conditional graphic designations, as well as the thickness of their lines should be the same in all circuits for this product (installation).

Notes: 1. All dimensions of graphic designations is allowed to change proportionally. 2. Conditional graphic designations of the elements used as components of the designations of other elements (devices) are allowed to be depicted compared to the other elements (for example, a resistor in a rhombic antenna, valves in the separation panel). (Modified edition, change No. 2). 2.4.3. Graphic designations in the schemes should be performed by the lines of the same thickness as the communication lines. 2.4.4. Conditional graphic designations of the elements are depicted in the scheme in the position in which they are given in the appropriate standards, or rotated to an angle, multiple 90 °, if there are no special instructions in the relevant standards. Conditional graphic designations are allowed to rotate to an angle, multiple of 45 °, or depict mirrored rotated. If, when turning or a mirror image of conditional graphic designations, the meaning or readability of the designation may be disturbed, such notation must be depicted in the position in which they are given in the relevant standards. Conditional graphic notes containing digital or alphanumeric designations are allowed to be rotated only at an angle of 90 or 45 ° only. 2.5. Communication lines 2.5.1. The communication lines are performed with a thickness of 0.2 to 1.0 mm depending on the formats of the circuit and the size of graphic designations. Recommended thickness of lines from 0.3 to 0.4 mm. 2.5.2 The lines of communication must consist of horizontal and vertical segments and have the smallest number of fesoms and mutual intersections. Note. In some cases, it is allowed to use inclined segments of communication lines, the length of which should be limited. 2.5.3. Communication lines, moving from one sheet or one document to another, be overstated outside the image of the circuit without arrows. Next to the communication lift, the designation or name assigned to this line should be indicated (for example, the wire number, the pipeline number, the name of the signal or its abbreviation designation, etc.), and in parentheses the number of the scheme and zone The implementation of the circuit on several sheets, for example, a sheet 5 of the A6 zone (5, A6), or the designation of the document, when performing the schemes with independent documents to which the communication line passes. 2.5.4. Communication lines must be shown, as a rule, completely. Note. Communication lines within one sheet, if they make it difficult to read the scheme, it is allowed to turn. Communication lines cliffs finish arrows. Around the arrows indicate the places of designations of interrupted lines, for example, connections, and (or) the necessary characteristics of the chains, for example, polarity, potential, pressure, fluid flow, etc. 2.5.5. Elements (devices, functional groups) included in the product and shown in the diagram must have designations in accordance with the standards for the rules for performing specific types of schemes. Designations can be alphabetic, alphanumeric and digital. Note. Designations of elements (devices, functional groups) specific to certain industries should be established by industry standards. 2.6. List of elements 2.6.1. The list of elements is placed on the first sheet of the scheme or perform in the form of an independent document. 2.6.2. The list of elements is made in the form of a table (damn 3), filled from top to bottom. In the columctions of the table indicate the following data: - in the column "Pos. designation "- positional designations of elements, devices and functional groups; - in the column "name" - for the element (device) - the name in accordance with the document on the basis of which this element (device) is applied, and the designation of this document (the main design document, state standard, industry standard, technical conditions); - for the functional group - the name;

In the Count "Note" - it is recommended to specify the technical data of the element (devices) not contained in its name. 2.6.3. When performing a list of items on the first sheet of the circuit of it, it is usually over the main inscription. The distance between the list of elements and the main inscription should be at least 12 mm. The continuation of the list of elements is placed on the left of the main inscription, repeating the head of the table. 2.6.4. When the list of items is released as an independent document, its code should consist of the letter "P" and the schema code to which the list is released, for example, the list of elements to hydraulic concept - PG3. At the same time in the main inscription (graph 1) indicate the name of the product, as well as the name of the document "List of Elements". The list of elements is recorded in the specification after the diagram to which it is released. The list of elements in the form of an independent document is performed on A4 format. The main inscription and additional graphs to it are performed according to GOST 2.104-68 (forms 2 and 2a). 2.6.5. When you break down the field of the circuit on the zone, the list of elements is complemented by the "zone" graph (Damn 4), indicating the zone designation in which this element is located (device).

Notes: 1. In some cases, information about the elements placed in the diagram may be incomplete if their volume is established in government or industry standards. 2. At the technical proposal stages, sketch and technical design, information about the elements placed in the scheme may be incomplete. 3. Additional graphs are allowed if necessary, if they do not violate the record and do not duplicate information in the main graphs. 2.6.6. Elements to the list are recorded by groups in alphabetical order of alphabetic positional designations. Within each group with the same lettering positional notation, the elements are located ascending the sequence numbers. When performing on the diagram of digital designations to the list, they are written in ascending order. Notes: 1. To facilitate the change of changes, it is allowed to leave several unfilled rows between individual groups of elements, and when large quantities elements inside groups - and between elements. 2. Elements of the same type with the same parameters that have consecutive sequence numbers on the diagram, allowed to be recorded in a list of one row. In this case, in the Count "Pos. Designation »Enable only positional notation with the smallest and largest ordinal numbers, for example: R3, R4, C8 ... C12, and in the count" count " - Total number of such elements.

3. When writing the elements of the same name, characterized by technical characteristics and other data and having the same letter positional designation, it is allowed in the "Name" column: name of these elements in the form of a general name; In general name - the name, type and designation of the document (state standard, technical conditions or the main design document), on the basis of which these elements are applied (damn 5). 2.6.7. When assigning the positional designations to elements within the groups of devices or when entering the product of identical functional groups into the list of elements, items related to devices and functional groups are recorded separately. The entry of the elements included in each device (functional group) starts from the name of the device or the functional group, which is recorded in the "Name" column and emphasize. For automated design The name of the device (functional group) is allowed not to emphasize. Below the names of the device (functional group) should be left one free string, above is at least one free lines. Notes: 1. If the product includes unequal functional groups, this method of recording is permissible. 2. If the product schema contains elements that are not included in the device (functional groups), then when filling out the list of items, you first record these elements without a header, and then devices that do not have independent schematic diagrams and functional groups with elements included in them. 3. If there are several identical devices or functional groups in the product, then the number of elements included in one device (functional group) indicate in the list. The total number of identical devices (functional groups) indicate the column "count" On one line with the title. 4. If there are elements that are not independent structures in the product, then when recording them into the list of the Count "Name" is not filled, and in the Count "Note" placed an explanatory inscription or a reference to an explanatory inscription on the diagram field (damn 6).

2.7. Text information 2.7.1. Schemes allowed to place various technical data, the character of which is determined by the purpose of the scheme. Such information indicate either about graphic designations (if possible on both or top), or on the free field of the circuit. About graphic designations of elements and devices are placed, for example, the nominal values \u200b\u200bof their parameters, and on the free field of the diagram - diagrams, tables, text indications (diagrams of the time processes, cyclicogram, closure tables of switching devices, indications of specific installation requirements, etc. P.). 2.7.2. Text data leads to the scheme in cases where the information contained in them is inappropriate or cannot be expressed graphically or symbols. Text content should be brief and accurate. In the inscriptions in the schemes should not be reduced to words, with the exception of generally accepted or established in standards. Text data depending on their content and destination can be located: - next to graphic notation; - inside graphic designations; - over communication lines; - in the break of communication lines; - near the ends of communication lines; - On the free field of the scheme. 2.7.3. Text data related to lines orient parallel to the horizontal sections of the corresponding lines. With a large density of the circuit, vertical data orientation is allowed. 2.7.4. In the scheme near the conditional graphic designations of elements requiring explanations under operating conditions (for example, switches, potentiometers, regulators, etc.), the corresponding inscriptions, signs or graphic notation are placed. Inscriptions, signs or graphic designations, designed to apply on the product, enter into quotes in the scheme. If an inscription in quotes should be applied on the product, then the schema fields provide appropriate instructions. 2.7.5. On the field of the scheme over the main inscription, it is allowed to place the necessary technical instructions, for example, the requirements for the inadmissibility of the joint laying of some wires, harnesses, cables, pipelines, the magnitude of the minimum permissible distances between wires, harness, harness and cables, pipelines, data on the specificity of gasket and wire protection , harnesses, cables and pipelines, etc. When performing a scheme on multiple sheets, the technical instructions that are common to the whole schema should be located on a free field (if possible above the main inscription) of the first sheet of the circuit, and the technical instructions related to individual elements There are either in close proximity to the image of the element or on the free field of that sheet, where they are most necessary for the convenience of reading the scheme. 2.8. Rules for performing combined schemes 2.8.1. Elements (devices, functional groups) and communication of each type (electrical, hydraulic, pneumatic, etc.) are depicted in the scheme according to the rules set for the corresponding types of schemes of this type. 2.8.2. Information placed on the scheme and registration of the scheme as a whole should be determined by the rules set for the corresponding types of schemes of this type. 2.8.3. Elements of one type of schemes on the diagram are assigned positional designations through within the circuit. To distinguish the same writing, they should be emphasized, starting from the elements relating to the second in view of the scheme specified in the title. These rules should be performed for devices and functional groups. For example, a diagram of an electro-hydraulic principal - one feature for hydraulic elements (devices, functional groups); A hydropneumatic scheme is a fundamental - one feature for pneumatic elements (devices, functional groups), two - for kinematic.

ATTACHMENT 1

Reference

Explanation of terms used in the standard

1. Element of the circuit - The component of the scheme that performs a specific function in the product and cannot be divided into parts having independent purpose and its own conditional graphic and alphanumeric designations (resistor, contact relay, pipe, pump, coupling, etc.). 2. Device - A combination of elements representing a single design (multi-contact relay, a set of transistors, fees, block, wardrobe, mechanism, separating panel, etc.). The device may not have in a product of a specific functional purpose. 12. (Modified editors, change No. 2). 3. Functional group - A combination of elements that perform a specific function in the product and are not combined into a single design. four. Functional part - element, device, functional group. five. Functional chain - line, channel, path of a specific purpose (sound channel, video channel, microwave tract, etc.). 6. Line relationship - Cut line indicating the presence of communication between the functional parts of the product. 7. Installation - The conditional name of the object in the energy facilities, on which the scheme is produced, for example, the main chains. eight. Structural scheme - Scheme defining the main functional parts of the product, their purpose and interconnection. Structural schemes are developed when designing products (installations) at stages preceding the development of other types of schemes, and use them for general familiarization with product (installation). nine. Functional scheme - A diagram explaining certain processes flowing in separate functional circuits of the product (installation) or in a product (installation) as a whole. Functional schemes are used to study the principles of work of products (installations), as well as when they are adjusted, control and repair. 10. The scheme is fundamental (complete) - A diagram determining the full composition of elements and connections between them and, as a rule, gives a detailed idea of \u200b\u200bthe principles of the product (installation). Schemes are fundamental to study the principles of work (installations), as well as with their adjustment, control and repair. They serve as a basis for the development of other design documents, such as compounds of compounds (assembly) and drawings. eleven. Connection diagram (assembly) - A diagram showing the compounds of the component parts of the product (installation) and the defining wires, harnesses, cables or pipelines, which are carried out by these connections, as well as the locations of their connections and input (connectors, boards, clamps, etc.). Schemes of compounds (assembly) are used in the development of other design documents, first of all, drawings that determine the gasket and methods for fastening wires, harnesses, cables or pipelines in the product (installation), as well as to carry out connections and when monitoring, operating and repairing products ( installations). 12. Connection scheme - A diagram showing external connection connections. Connection schemes are used in the development of other design documents, as well as to carry out products and when they are operating. 13. Total scheme - A diagram defining the components of the complex and connecting them between themselves at the site of operation. Schemes generally enjoy when familiarizing with complexes, as well as when they are controlled and operation. The scheme overall on the assembly unit is allowed to develop as necessary. fourteen. Location scheme - A diagram determining the relative location of the components of the product (installation), and, if necessary, also harness, wires, cables, pipelines, etc. Location schemes are used in the development of other design documents, as well as during operation and repair of products (installations). fifteen. The compound scheme - A diagram when on a single design document is performed by the schemes of two or more types released on one product (installation).

Appendix 2.

Reference

Information data on the conformity of the types of types of electrical circuits according to GOST 2.701-84 and ST SEV 527-77

Types of schemes	Code type schema
	according to GOST 2.701-84	at ST SEV 527-77
Structural
Functional
Fundamental (full)
Equivalent
Compounds (assembly)
Connections
General
Location
Electrical and wiring on plans
Power supply and communications

one system design documentation

SCHEMES

Types and types
General requirements To fulfillment

Moscow Standinform 2009

Preface

The goals, the basic principles and the main procedure for carrying out work on interstate standardization are GOST 1.0-92 "Interstate standardization system. Basic provisions "and GOST 1.2-97" Interstate standardization system. Standards interstate, rules and recommendations on interstate standardization. The procedure for the development, adoption, application, updates and cancellations "

Information about standard

1 Developed by the Federal State Unitary Enterprise, All-Russian Research Institute of Standardization and Certification in Mechanical Engineering (VNIInmash), Autonomous Non-Profit Organization Research CenterCals. -Nologics "Applied Logistics" (ANO NICCals. -The technologies "Applied Logistics")

2 introduced by the Federal Agency for Technical Regulation and Metrology

3 Adopted by the Interstate Council for Standardization, Metrology and Certification (Protocol No. 34 of October 7, 2008)

Short name of the country on MK (ISO 3166) 004-97	Country code according to MK (ISO 3166) 004-97	Abbreviated name of the National Standardization Authority
Azerbaijan		Azstandard
Armenia		MintorGeconomy Development
Belarus		Gosstandart of the Republic of Belarus
Kazakhstan		Gosstandart of the Republic of Kazakhstan
Kyrgyzstan		Kyrgyzstandart
Moldova		Moldova Standard
the Russian Federation		Federal Agency for Technical Regulation and Metrology
Tajikistan		Tajikstandard
Turkmenistan		GlavGregional "Turkmenstandartlar"
Ukraine		State StandStandart of Ukraine

4 orders Federal Agency on technical regulation and metrology of December 25, 2008 No. 702-ST Interstate standard GOST 2.701-2008 was enacted as the National Standard of the Russian Federation from July 1, 2009

Information on the introduction of (termination) of this Standard is published in the National Standards Index.

Information about the changes to this standard is published in the "National Standards" indicators, and the text of the change - in the information signs "National Standards". In case of revision or cancellation of this standard, the relevant information will be published in the information indicator "National Standards"

Interstate standard

Date of administration - 2009-07-01

1 area of \u200b\u200buse

This standard applies to the schemes made in paper and e-form, products of all industries, as well as electrical schemes of energy facilities (electric stations, electrical equipment of industrial enterprises, etc.), establishes types, scheme types and general requirements for their implementation.

Based on this standard, it is allowed, if necessary, develop standards, establishing species, types, completeness and requirements for the implementation of schemes for products of specific types of equipment, taking into account their specifics.

2 Regulatory references

This standard uses references to the following interstate standards:

3 The product division scheme for components (division scheme) is issued to determine the composition of the product.

4.3 Types of schemes, depending on the main purpose, are divided into types. Types of schemes and their codes are presented in Table 2 *.

table 2

Type of schema	Definition	Code type schema
Structural scheme	Document defining the main functional parts of the product, their purpose and interconnection
Functional scheme	Document explaining processes in separate functional circuits of the product (installation) or products (installation) as a whole
The scheme is fundamental (complete)	A document determining the full composition of the elements and the relationship between them and, as a rule, gives full (detailed) ideas about the principles of the product (installation)
Connection diagram (assembly)	A document showing the compounds of the component parts of the product (installation) and the defining wires, harnesses, cables or pipelines, which are carried out by these connections, as well as the locations of their connections and input (connectors, boards, clamps, etc.)
Connection scheme	Document showing external connection connections
Total scheme	A document that determines the components of the complex and connecting them among themselves at the site of operation
Location scheme	A document determining the relative location of the components of the product (installation), and, if necessary, also harnesses (wires, cables), pipelines, light guides, etc.
The compound scheme	Items containing elements different types schemes of one type
Note - The names of the schemes specified in brackets are set for electrical schemes of energy facilities.

4.4 Name and scheme code determine their type and type.

The name of the circuit of the combined is determined by a combination of species of schemes of the same type.

The name of the combined circuit is determined by a combination of types of schemes of one species.

The scheme code should consist of an alphabetic part that determines the type of schema (see Table 1), and a digital part that defines the type of scheme (see Table 2): for example, an electric principal scheme - E3; Scheme Hydraulic compounds - G4; The division of the structural - E1; Electro-hydraulic principal scheme - C3; Electrohydropnemopnematic circuit breaker - C3; Electrical circuit and connections - E0; Scheme hydraulic structural, principled and compounds - g0.

Notes

1 It is allowed to develop schemes that are combined when information is placed on the diagrams of the same type, for example, on the product connection diagram (settings) show its external connections.

When executing the combined schemes, the rules set for the schemes of the corresponding types must be followed.

The nomenclature, names and codes of combined circuits must be installed in the standards of the organization.

2 If in connection with the features of the product (installation) the amount of information required for its development (design), adjustment, control, operation and repair can not be transferred in a set of documentation in the schemes of established species and types, then it is allowed to develop the schemes of other types and Types.

Nomenclature, names and codes of other schemes must be installed in the organization standards.

3 On the product (installation) is allowed to perform a diagram of a certain type and type on several sheets or instead of one scheme of a certain type and type, perform a set of schemes of the same type and type. At the same time, each diagram must be framed as an independent document.

When the product is released on a product (installation) of several schemes, the name of the functional circuit or the functional group (for example, the electrical power circuit diagram is allowed (for example, an electric power circuit diagram, a diagram of hydraulic concept, a diagram of hydraulic principal Lubricants, hydraulic circuit cooling circuit).

In this case, each scheme is assigned the designation according to GOST 2.201, as an independent design document and, starting from the second schema, to the schema code in the designation is added via the point arabic numbers Order numbers (for example, ABVG.Hhkhhhh.hhhhez, ABBG.Hhkhhhh.khkhhe3.1; ABBG.Hhkhhhh.hhhg3, ABVG.Hhkhhhh.hhhg3.1, ABBG.Hhkhhhh.hhhg3.2).

4.5 To schemes or instead of schemes in cases established by the rules for performing specific types of schemes, in the form of independent documents of the table containing information about the location of devices, connections, connecting places and other information. Such documents are assigned a code consisting of the letter T and the code of the corresponding scheme. For example, the code code of the compounds to the electrical circuit of the compounds is TE4.

In the main inscription (graph 1) of the document indicate the product name, as well as the name of the document "Connection Table".

Connection tables are recorded in the specification after the schemes to which they are released, or instead of them.

5 General requirements for implementation

5.1 Set (nomenclature) schemes

5.1.1 The nomenclature of the schemes on the product should be determined depending on the features of the product (installation).

The number of types of schemes on the product (installation) must be minimal, but in the aggregate, they must contain information in the amount sufficient to design, manufacture, operate and repair the product (installation).

5.1.2 Between the schemes of one set of design documents on the product (installation), a unambiguous bond must be installed, which would ensure the possibility of quickly finding the same elements (devices, functional groups), relationships or connections in all diagrams of this kit.

5.2 Formats

5.2.1 Formats of sheets of schemes are chosen in accordance with the requirements established in GOST 2.301 and GOST 2.004, while the main formats are preferred. When choosing formats, consider:

The volume and complexity of the projected product (installation);

The required degree of data detail due to the purpose of the scheme;

Conditions of storage and circulation of schemes;

Features and capabilities of the technique of execution, reproduction and (or) microfilming schemes;

The possibility of processing schemes by means of computing equipment.

The selected format must provide a compact implementation of the scheme without violating its visibility and ease of use.

5.3 Construction of the Scheme

5.3.1 Schemes are performed without compliance with the scale, the actual spatial arrangement of the components of the product (installation) is not taken into account or take into account approximately.

5.3.2 Conditional graphics symbols (HGO) of elements, devices, functional groups and their interconnection lines should be positioned in the diagram in such a way as to ensure the best idea of \u200b\u200bthe structure of the product and the interaction of its components.

Notes

1 It is allowed to place the hug in the diagram in the same order in which they are located in the product, provided that this will not violate the readability of the scheme.

2 In the presence of several identical elements (devices, functional groups) connected in parallel, it is allowed instead of the image of all the branches of the parallel compound, to portray only one branch, indicating the number of branches with the assistance of branch. Near the Ugo shown in one branch, they put their designations. In this case, all elements, devices or functional groups included in this parallel compound must be taken into account (see Figure 1).

Elements in this case are recorded in the list of items in one line.

Picture 1

3 In the presence of three and more identical elements (devices, functional groups), connected sequentially, instead of the image of all sequentially connected elements (devices, functional groups), represent only the first and last elements (devices, functional groups), showing the links between them Stroke lines.

When assigning items (devices, functional groups) of the designations, elements (devices, functional groups) must be taken into account, not shown in the diagram (see Figure 2). At the same time, over the dashed line indicates the total number of identical elements. Elements in this case are recorded in the list of items in one line.

Figure 2.

4 schemes are allowed to perform within the consequent contour, simplifically depicting the design of the product. In these cases, the conventions are performed by lines equal to the thickness of the relationship lines. The contour of the product is allowed to perform thinner lines.

5.3.3 When performing a scheme on several sheets or in the form of a set of schemes of one type, it is recommended:

For schemes designed to explain the principles of the work of the product (functional, fundamental), depict on each sheet or on each diagram a specific functional group, a functional chain (line, tract, etc.);

For schemes designed to determine the compounds (diagram of the connections), portray on each sheet or on each scheme part of the product (installation) located in a certain place of space or a specific functional chain.

Schemes performed in electronic form, it is recommended to perform single-board with the provision of dividing this sheet when printing on the necessary formats.

5.3.4 The distance (lumen) between the two neighboring hug lines should be at least 1.0 mm.

The distance between adjacent parallel interconnection lines should be at least 3.0 mm. The distance between the individual hugo must be at least 2.0 mm.

5.3.5 Devices with an independent principal scheme are performed in schemes in the form of a figure of a solid line equal to the thickness of the interconnection lines.

Note - It is allowed to perform devices in the form of a line figure two times the thicker of the interconnection line.

5.3.6 A functional group or a device that does not have an independent concept is performed on the schemes in the form of a figure of contour barcotted lines equal to the thickness of the interconnection lines.

Note By 5.3.5, 5.3.6 - the figure defined by the contour line, as a rule, should be a rectangle. It is allowed to allocate parts of the diagram of the figures of the indirectal form.

5.3.7 When designing a product in which several different devices include, each device is recommended to perform an independent principal scheme.

On devices that can be applied in other products (installations) or independently, independent schemes should be performed.

5.3.8 When designing the product circuits (installation), which includes devices that have independent concepts, each such device is considered as a product schema element and depict it in the form of a rectangle or hugo, it is assigned a positional designation and recorded in the list of elements in one position .

Notes

1 If a product (installation) includes several identical devices that do not have independent concepts, or function groups, then the scheme of these devices or functional groups is allowed on the product circuit (installation). In this case, the device or functional group is depicted as a rectangle, and the scheme of such a device or functional group is depicted inside one of the rectangles (larger) or placed on the field of the scheme with an appropriate inscription, for example: "block of the ABBC.

2 When performing a schematic diagram on a multi-storey survey, perform the following requirements:

When assigning elements of positional designations, pass-to-end numbering within the product (installation) are observed;

The list of elements must be common;

Separate elements are allowed to re-display on other sheets of the circuit, while maintaining the positional notation assigned to them on one of the sheets of the circuit.

3 When developing on one product, several independent schematic diagrams should follow the following requirements:

The positional designations of the elements are assigned by the rules set in Note 2;

In each diagram there must be a list of only those elements, the positional notation by which are assigned on this scheme;

Separate elements are allowed to re-display in several schemes, retaining the positional notation assigned to them on one of the schemes.

In this case, the schemes are placed on type indications: "Elements depicted in the diagram and not included in the list of elements, see ABBG.HHHXXXX.HHHH33" or "Hydrocalpans K1 and K5, see ABBG.

5.4 Graphic designations

5.4.1 When performing schemes, the following graphic notes are applied:

Hugo, established in the standards of a unified system of design documentation, as well as based on them;

Rectangles;

Simplified external outlines (including axonometric). If necessary, use non-standard hugo.

When using non-standard horn and simplified external outlines in the diagram, the corresponding explanations lead.

The hugo, for which several permissible (alternative) embodiments, differing in the geometrical form or degree of detail, should be used, based on the type and type of scheme being developed depending on the information that must be transmitted in the graphics scheme. At the same time, one selected designation option should be applied to all the diagrams of one type of documentation.

Application in schemes of certain hugo define the rules for the implementation of schemes of a particular type and type.

5.4.2 Hugo elements are depicted in the sizes installed in the relevant standards of a unified system of design documentation for HTO. Hugo, the ratios of the dimensions of which are given in the corresponding standards on the modular grid, should be depicted in the diagrams in the sizes determined by vertical and horizontally by the number of steps of the modular mesh M (see Figure 3). At the same time, the modular grid step for each circuit can be any, but the same for all elements and devices of this circuit.

Figure 3.

Hugo elements, the dimensions of which are not established in these standards, should be depicted in the diagram in the sizes in which they are implemented in the relevant standards on the hugo.

The sizes of the hug, as well as the thickness of their lines should be the same in all circuits for this product (installation).

Notes

1 All sizes of hugo is allowed to change proportionally.

2 Hugo elements used as components of the designations of other elements (devices) are allowed to be depicted with compared to the other elements (for example, a resistor in a rhombic antenna, valves in the separation panel).

5.4.3 Hugo in diagrams should be carried out by lines of the same thickness as the lines of the relationship.

5.4.4 Hugo elements are depicted in the scheme in the position in which they are given in the corresponding standards, or rotated to an angle, multiple of 90 °, if there are no special instructions in the relevant standards. It is allowed to rotate the corner, multiple of 45 °, or depict mirrored rotated.

If, when you turn or a mirror image, the hugo may disrupt the meaning or readability of the designation, then such designations must be depicted in the position in which they are given in the relevant standards.

Hugo, containing digital or alphanumeric designations, is allowed to rotate counterclockwise only at an angle of 90 ° or 45 °.

5.5 Lines interconnection

5.5.1 Relationship lines are performed with a thickness of 0.2 to 1.0 mm depending on the formats of the scheme and the sizes of the hugo. Recommended lines thickness - from 0.3 to 0.4 mm.

5.5.2 Relationship lines should consist of horizontal and vertical segments and have the smallest number of fesoms and mutual intersections.

Note - In some cases, the inclined segments of the interconnection lines are allowed, the length of which should be limited if possible.

5.5.3 Relationship lines, passing from one sheet or one document to another, you should turn off outside the image of the circuit without arrows.

Next to the interconnection lines, the designation or name assigned to this line should be specified (for example, the wire number, the number of the pipeline, the name of the signal, or its abbreviation designation, etc.), and in parentheses, the number of the circuit sheet and zone during its presence The implementation of the circuit on several sheets, for example, a sheet 5 zone A6 (5, A6), or the designation of the document when performing the schemes by the independent documents to which the interconnection line passes.

5.5.4 Relationship lines must be shown, as a rule, completely.

Note - Interconnection lines within one sheet, if they make it difficult to read the scheme, it is allowed to overturn. Interconnecting lines terminals finish with arrows. Arrows indicate the places of designations of interrupted lines, for example, connections, and (or) the necessary chart characteristics, such as polarity, potential, pressure, fluid flow, etc.

5.5.5 Elements (devices, functional groups) included in the product and shown in the scheme should have designations in accordance with the standards for the rules for performing specific types of schemes.

Designations can be alphabetic, alphanumeric and digital.

Note - Designations of elements (devices, functional groups) specific to certain industries should be established by the organization standards.

5.6 text information

5.6.1 In the schemes allowed to place various technical data, the character of which is determined by the appointment of the scheme. Such information indicate either around the hug (if possible on both or from above), or on the free field of the scheme. Near the hugs of elements and devices are placed, for example, the rated values \u200b\u200bof their parameters, and on the free field of the diagram - diagrams, tables, text indications (diagrams of the time processes, cyclicogram, closure tables of commuting devices, indications of specific installation requirements, etc. .).

5.6.2 Text data leads in the diagram in cases where the information contained in them is inappropriate or cannot be expressed graphically or in the form of hugo.

Text data depending on their content and destination can be located:

Near Hugo;

Inside the hug;

Over interconnection lines;

In a break of lines of interconnection;

Near the ends of the interconnection lines;

On the free field of the scheme.

5.6.3 Text data related to lines oriented parallel to horizontal areas of the corresponding lines.

With a large density of the circuit, vertical data orientation is allowed.

5.6.4 The scheme near the hugo elements requiring explanations under operating conditions (for example, switches, potentiometers, regulators, etc.), the corresponding inscriptions, signs or graphic notation are placed.

Inscriptions, signs or hugo, designed to apply on the product, enter into quotes in the scheme.

If an inscription in quotes should be applied on the product, then the schema fields provide appropriate instructions.

5.6.5 Above the main inscription is allowed to place the necessary technical instructions, for example, the requirements for the inadmissibility of joint laying of some wires, harnesses, cables, pipelines, minimally permissible dimensions between wires, harness, harness and cables, pipelines, data on the specificity of laying and protect wires, harnesses, cables and pipelines, etc.

When performing a scheme on multiple sheets, the technical instructions that are common to the whole circuit should be positioned on the free field (if possible above the main inscription) of the first sheet of the circuit, and the technical instructions related to individual elements are located or in close proximity to the image of the element, or on The free field of that sheet, where they are most necessary for the convenience of reading the scheme.

5.7 List of elements

5.7.1 The list of elements is placed on the first sheet of the circuit or are performed as an independent document. For electronic documents The list of elements is performed only in the form of an independent document. In the case of the development of an electronic structure of the product according to GOST 2.053, the list of elements is recommended to be obtained from a report decorated in accordance with the requirements of this Standard.

5.7.2 The list of elements is made in the form of a table (see Figure 4), filled from top to bottom.

Figure 4.

In the columctions of the table indicate the following data:

in the column "Pos. designation "- positional designations of elements, devices and functional groups;

in the column "name" - for the element (device) - the name in accordance with the document, on the basis of which this element (device) is applied, and the designation of this document (the main design document, the Interstate Standard, Standard of the Russian Federation, the standard of organization, technical conditions) ; - for the functional group - the name;

5.7.3 When performing the list of items on the first sheet of the circuit of it, it is usually over the main inscription.

The distance between the list of elements and the main inscription should be at least 12 mm.

The continuation of the list of elements is placed on the left of the main inscription, repeating the head of the table.

5.7.4 When released the list of elements in the form of an independent document, its code should consist of the letter "P" and the code code to which the list is released, for example, the list of elements to the hydraulic concept - PPZ. At the same time in the main inscription (graph 1) indicate the name of the product, as well as the name of the document "List of Elements".

The list of elements is recorded in the specification after the diagram to which it is released.

The list of elements in the form of an independent document is performed on A4 format. The main inscription and additional graphs to it are performed according to GOST 2.104 (forms 2 and 2a).

5.7.5 When breaking the field of the circuit in the zone, the list of elements is complemented by the column "zone" (see Figure 5), indicating the zone designation in which this element is located.

Figure 5.

Notes

1 In some cases, information about the elements placed in the diagram may be incomplete if their volume is installed in interstate standards.

2 At the stages of technical proposal, sketch and technical projects, information about the elements placed in the scheme may be incomplete.

3 If necessary, additional graphs are allowed to enter the list of elements if they do not violate the record and do not duplicate information in the main graphs.

5.7.6 Elements The list is recorded by groups in alphabetical order of alphabetic positions.

Within each group with the same lettering positional notation, the elements are located ascending the sequence numbers.

When performing on the diagram of digital designations to the list, they are written in ascending order.

Notes

1 To facilitate changes, it is allowed to leave several unfilled strings between individual groups of elements, and with a large number of elements inside groups - and between the elements.

2 Elements of the same type with the same parameters that have consecutive sequence numbers on the diagram, allowed to be recorded in a list of one row. In this case, in the Count "Pos. The designation "fits only the positional notation with the smallest and largest sequence numbers, for example:R 3, R 4, C8 ... C12, and in the count "count" - Communicative number of such elements.

3 When writing the elements of the same name, characterized by technical characteristics and other data and having the same letter positional designation, allowed in the "Name" column:

Name of these elements in the form of a general name;

In general name - the name, type and designation of the document (interstate standard, technical conditions or the main design document), on the basis of which these elements are applied (see Figure 6).

Figure 6.

5.7.7 When assigning the positional designations to items within groups of devices or when entering the product of identical functional groups into the list of elements, elements related to devices and functional groups are recorded separately.

The entry of the elements included in each device (functional group) starts from the name of the device or the functional group, which is recorded in the "Name" column and emphasize. With automated design, the name of the device (functional group) is allowed not to emphasize.

Below the names of the device (functional group) should be left one free string, above is at least one free lines.

Notes

1 If the product includes unequal functional groups, then this method of recording is permissible.

2 If there are elements that are not included in the device (function groups), then when filling out the list of items, these elements are first recorded without a header, and then devices that do not have independent schematic diagrams and functional groups with elements included in them.

3 If there are several identical devices or functional groups in the product, then the number of elements included in one device (functional group) indicate in the list.

The total number of identical devices (functional groups) indicate the column "count" On one line with the title.

4 If there are elements that are not independent structures in the product, then when recording them in the list, the "NAME" Count is not filled, and in the "Note" column placed an explanatory inscription or a reference to an explanatory inscription on the schema field (see Figure 7).

Figure 7.

6 rules for performing combined schemes

6.1 Elements (devices, functional groups) and interrelations of each type (electrical, hydraulic, pneumatic, etc.) are depicted in the scheme according to the rules set for the corresponding types of schemes of this type.

6.2 Information placed on the scheme and the design of the scheme as a whole should be determined by the rules set for the corresponding types of schemes of this type.

6.3 Elements of one type of schemes on the diagram are assigned the positional notation through within the circuit. To distinguish the same writing, they should be emphasized, starting from the elements relating to the second in view of the scheme specified in the title. These rules should be performed for devices and functional groups.

For example, a diagram of a hydropneumocinmetic principal - one line for pneumatic elements (devices, functional groups); Two - for kinematic.

7 rules for implementing the united schemes

7.1 Elements (devices, functional groups) and interrelations in each type of circuit (structural, functional, etc.) are depicted in the scheme according to the rules set for the corresponding types of schemes of this species.

7.2 Information placed in the diagram and the design of the scheme as a whole should be implemented according to the rules set for the corresponding types of schemes of this species.

7.3 Elements of one type of schema in the diagram are assigned positional notation through within the circuit. To distinguish the same writing, they should be emphasized, starting with the elements with the second by type, the scheme specified in the title. These rules should be performed for devices and functional groups.

For example, a diagram of hydraulic structural, fundamental and compounds - one feature in a block diagram, two - in principled and three - in the diagram of the compounds.

Appendix A.
(Reference)
Explanations to some items of this standard for better text understanding

Examples of the diagram element can be: resistor, contact relay, pipe, pump, coupling, etc.

The device may not have in a product of a specific functional purpose.

Examples of the functional chain: sound channel, video channel, microwave tract, etc.

Structural schemes are developed when designing products (installations) at the stages preceding the development of other types of schemes, and use them for general familiarization with the product (installation).

Functional schemes are used to study the principles of the work of products (installations), as well as with their lining, control and repair.

Schemes are fundamental to study the principles of work (installations), as well as with their adjustment, control and repair. They serve as a basis for the development of other design documents, such as compounds (assembly) and drawings.

Schemes of compounds (assembly) are used in the development of other design documents, first of all, drawings that determine the gasket and methods for fastening wires, harnesses, cables or pipelines in the product (installation), as well as to carry out connections and when monitoring, operating and repairing products ( installations).

Connection schemes are used in the development of other design documents, as well as to carry out products and when they are operating.

Schemes generally enjoy when familiarizing with complexes, as well as when they are controlled and operation. The scheme overall on the assembly unit is allowed to develop as necessary.

The location schemes use when developing other design documents, as well as during the operation and repair of products (installations).

Keywords: Design documentation, schemes, species, types, general requirements

State Standards of the SSR Union

Unified system of design documentation

Rules for the implementation of schemes

GOST 2.702-75

State Committee of the USSR on Standards

Moscow

State Standard of the SSR Union

Resolution of the State Committee of Standards of the Council of Ministers of the USSR on September 7, 1975 No. 2584 The deadline for administration is established

from 01.07.77

This standard applies to electrical schemes of products of all industries, as well as electrical schemes of energy facilities and establishes rules for their execution manually or an automated way. Types and types of schemes and general requirements for their execution - according to GOST 2.701-84. Designations of alphanumeric in electrical circuits - according to GOST 2.710-81. The standard corresponds to ST SEV 1188-78 in part of the section. 2 - 4, 6 - 9 (see Reference application).

1. Rules for the implementation of structural schemes

1.1. The structural scheme depicts all the main functional parts of the product (elements, devices and functional groups) and the main relationship between them. 1.2. Functional parts The diagram is depicted as a rectangle or conditional graphic designation. 1.3. The graphic construct of the scheme should give the most visual representation of the sequence of interaction between functional parts in the product. On lines of relationships, it is recommended to designate the direction of the processes occurring in the product. 1.4. The diagram should indicate the names of each functional part of the product, if a rectangle is applied to its designation. The diagram allows you to specify the type of element (device) and (or) designation of the document (the main design document, state standard, technical conditions), on the basis of which this element (device) is applied. When the functional parts are depicted in the form of rectangles of the names, types and designations are recommended to fit into the rectangles. 1.5. With a large number of functional parts, it is allowed instead of the names, types and designations to lift the sequence numbers to the right of the image or above it, as a rule, from top to bottom in the direction from left to right. In this case, the names, types and notation are indicated in the table placed on the schema field. 1.6. It is allowed to put the explanatory inscriptions, diagrams or tables that determine the sequence of processes over time, as well as specify the parameters in the characteristic points (values \u200b\u200bof currents, stresses, shapes and values \u200b\u200bof pulses, mathematical dependencies, etc.).

2. Rules for performing functional schemes

2.1. The functional diagram depicts the functional parts of the product (elements, devices and functional groups) involved in the process illustrated by the diagram and the connection between these parts. 2.2. Functional parts and connections between them are depicted in the form of conventional graphic designations established in the standards of a unified system of design documentation. Separate functional parts are allowed to portray in the form of rectangles. 2.3. The graphical construction of the scheme should give the most visual representation of the sequence of processes illustrated by the scheme. 2.4. It is allowed when performing a functional scheme to use the provisions specified in PP. 3.6 - 3.15 and 3.24. 2.5. The diagram should indicate: for each functional group - the designation assigned to it on the schematic diagram, and (or) its name; If the functional group is depicted in the form of a conditional graphic notation, its name does not indicate; For each device depicted in the form of a rectangle - a positional designation assigned to it on a schematic diagram, its name and type and (or) designation of the document (the main design document, state standard, technical conditions), on the basis of which this device was applied; For each device depicted in the form of a conditional graphic notation - a positional designation assigned to it on a schematic diagram, its type and (or) designation of the document; For each element - a positional designation assigned to it on a schematic diagram, and (or) its type. The designation of the document, on the basis of which the device was applied, and the type of item is allowed not to indicate. Names, types and designations are recommended to fit into rectangles. 2.6. On the diagram it is recommended to indicate specifications Functional parts (next to graphic notation or on the free field of the circuit). 2.7. The diagram is placed explanatory inscriptions, diagrams or tables that determine the sequence of processes in time, and also indicate the parameters in the characteristic points (values \u200b\u200bof currents, stresses, shapes and values \u200b\u200bof pulses, mathematical dependencies, etc.).

3. Rules for implementing concept schemes

3.1. The schematic diagram depicts all electrical elements or devices necessary for carrying out and controlling the product of the specified electrical processes, all electrical connections between them, as well as electrical elements (connectors, clamps, etc.), which end the input and output chains. (Modified edition, change No. 2). 3.2. The diagram allows you to portray the connecting and mounting elements installed in the product according to constructive considerations. 3.3. Schemes are performed for products located in a disconnected position. In technical cases, individual elements of the scheme are allowed to depict in the selected operating position with an indication of the mode circuit field for which these elements are depicted. 3.4. Elements and devices whose conditional graphics designations are installed in the standards of a unified system of design documentation are depicted in the diagram in the form of these conditional graphic designations. (New edition, change No. 3). 3.5. The elements or devices used in the product are partially, it is allowed to depict the incompleteness scheme, limited by the image of only parts or elements used. (New edition, change No. 3). 3.6. Elements and devices are depicted on the schemes in a combined or separated method. 3.7. With a combined method, composite parts of elements or devices are depicted in the diagram in close proximity to each other. 3.8. With the separated method, composite parts of elements and devices or individual elements of devices are depicted in the scheme in different places So that individual product chains are depicted most clearly. Discussion is allowed to depict all and individual elements or devices. When performing diagrams, it is recommended to use the line method. In this case, the conditional graphic designations of the elements or their constituent parts included in one chain are depicted successively by each other in a straight line, and individual chains are near, forming parallel (horizontal or vertical) strings. When performing a diagram, the strings of the Arabic figures (damn 1) are allowed to numbered.

Heck. one. (New edition, change No. 3). 3.9. When an elements or devices are displayed by a separated way, it is allowed on the free field of the scheme to place the conditional graphic designations of the elements or devices performed by the combined method. In this case, the elements or devices used in the product are partially depicted fully indicating the used and unused parts or elements (for example, all contacts of the multi-contact relay). Conclusions (Contacts) of unused elements (parts) are depicted in short than conclusions (contacts) of the elements used (parts) (features 2).

(New edition, change No. 3). 3.10. Schemes are performed in a multi-cable or unicineal image. 3.11. With a multi-line image, each chain is depicted by a separate line, and the elements contained in these circuits are separate conventional graphics symbols (damn 3a). 3.12. With a single-line image of the chain, performing identical functions, are depicted by one line, and the same elements of these chains are one conventional graphic designation (features. 3b). 3.13. If necessary, the scheme indicates the electrical chains. These designations must comply with the requirements of GOST 2.709-89 or other regulatory and technical documents operating in the industries.

but - multi-cable image; b. - Single polyground.

Heck. 3. (New edition, change No. 3). 3.14. When an image in one scheme of various function chains is allowed to distinguish between their thickness thickness. In one scheme, it is recommended to use no more than three dimensions of the lines in thickness. If necessary, the corresponding explanations are placed on the schema field. 3.15. To simplify the scheme, several electrically non-linked lines are allowed to drain into a group of group communication, but when under the course of contacts (elements), each line of communication is depicted by a separate line. When merging communication lines, each line is tagged at the merger site, and if necessary, both at both ends with the conventions (numbers, letters or a combination of letters and numbers) or notation taken for electrical circuits (see clause 3.13). Line designations are affixed in accordance with the requirements given in GOST 2.751-73. Electrical communication lines that drained in a group of group communication, as a rule, should not have branching, i.e. Any conditional number should be found on the group link line twice. If you need to branch, their number indicate after the order number of the line through the fractional feature (damn 3a).

3.16. Each element and (or) a device having an independent principal scheme and considered as an element included in the product and shown in the diagram must have the designation (positional designation) in accordance with GOST 2.710-81. Devices that do not have independent schematic diagrams and functional groups are advised to assign designations in accordance with GOST 2.710-81. 3.15, 3.16. (Modified edition, change No. 2). 3.17. Positional designations Elements (devices) should be assigned within the product (installation). 3.18. The sequence numbers elements (devices) should be assigned, starting from the unit, within the group of elements (devices), which the same letter positioning is assigned on the diagram, for example, R. 1 , R. 2 , R. 3 etc., C. 1 , C. 2 , C3. etc. 3.19. The sequence numbers must be assigned in accordance with the sequence of the location of the elements or devices on the scheme from top to bottom in the direction from left to right. If necessary, it is allowed to change the sequence of assignment of sequence numbers depending on the placement of the elements in the product, the direction of passage of signals or the functional sequence of the process. When making changes to the scheme, the sequence of assignment of sequence numbers may be violated. 3.20. The positional designations are affixed in the diagram next to the conditional graphics designations of elements and (or) devices on the right side or above them. 3.21. On the product scheme, which includes devices that do not have independent schematic diagrams, it is allowed to assign items to the elements within each device. If the product includes several identical devices, then the positional designations should be assigned to the elements within these devices. The sequence numbers should be assigned according to the rules set in clause 3.18. The elements that are not included in the device, the positional designations are assigned, starting from the unit, according to the rules set in paragraphs. 3.17 - 3.19. 3.22. On the product scheme, which includes functional groups, the positional designations are assigned to the rules set in PP. 3.17 - 3.19, at the same time they first assign the positional notation by elements that are not included in the functional groups, and then the elements included in the functional groups. In the presence of several identical functional, groups, the positional designations of the elements assigned in one of these groups should be repeated in all subsequent groups. The designation of the functional group assigned in accordance with GOST 2.710-81 is indicated near the image of the functional group (from above or right). 3.23. When an image or device is displayed on the diagram or device, the positional designation of the element or device is affixed near each composite part (damn 4).

If the field of the scheme is divided into zones or circuit, it is made in a lower case method, on the right of the position or under the positional designation of each composite part of the element or device, it is allowed to specify in the zone designation brackets or the rows numbers in which all other components of this element or device are depicted (damn . five).

3.21 - 3.23. (Modified edition, change No. 2). 3.24. It is allowed if it does not complicate the scheme, separately depicted parts of the elements to connect the mechanical communication line indicating their belonging to one element. In this case, the positional designations of the elements are affixed by one or both of the ends of the mechanical communication line. 3.25. When you see individual elements of devices in different places, the positional designation of the device in which they enter, for example, should be included in the composition of the positional designations of these elements. BUT3 -FROM5 - condenser C. 5 entering the device A.3. 3.26. With the separated method of the image of the functional group (if necessary and under the combined method), the designation of the elements included in this group should be included with the functional group, for example, ¹ T 1 - FROM5 - condenser C. 5 included in the functional group T.1. 3.27. With a single-line image of about one conditional graphic notation that replaces several conditional graphic designations of the same elements or devices, indicate the positional notation of all these elements or devices. If the same elements or devices are not in all circuits depicted one-centers, then to the right of the positional designation or under it in square brackets indicate the designations of the chains in which these elements or devices are located (see damn 3). 3.28. On the CONCERNAL SCHEME, all elements and devices included in the product and shown in the diagram should be defincolished. Data on items should be recorded in the list of elements. In this case, the link with the conditional graphic designations of the elements should be carried out through the positional notation. It is allowed in some cases established in government or sectoral standards, all information about the elements is placed near the conditional graphic designations. 3.27., 3.28. 3.29. - 3.33. (Excluded, change No. 2). 3.34. With a difficult entry, for example, when a device that does not have an independent concept is one or more devices having independent concepts, and (or) functional groups, or if one or more devices are included in the function group, etc., That in the list of items in the "Name" column before the name of devices that do not have independent schematic diagrams and functional groups is allowed to be made of ordinal numbers (i.e., similar to the designation of sections, subsections, etc.) within the entire product scheme (damn. 9a). ( cm. from. 336 ). If a positional designation of the device is enabled on the diagram to a positional designation of the element, or the designation of the functional group, then in the list of elements in the column "Pos. The designation "indicate the positional designation of the element without the positional designation of the device or the designation of the functional group. (Modified edition, change No. 2). 3.35. (Excluded, change No. 2). 3.36. When specifying about the conditional graphic designations of the ratings of resistors and capacitors (damn 11), it is allowed to apply a simplified method for designation of units of measurements. For resistors from 0 to 999 ohms - without specifying the units of measurement, from 1 × 10 3 to 999 × 10 3 ohms - in kiloma with the designation unit of measurement of the lowercase letter K, from 1 · 10 6 to 999 × 10 6 ohm - in megaoms with Meaning unit designation capital letter M, over 1 × 10 9 ohms - in gigamas with the designation unit of measurement of the capital letter g; For condensers from 0 to 9999 × 12 -12 Ф - in picofarades without specifying a unit of measurement, from 1 × 10 -8 to 9999 × 10 -6 F - in microfrases with a measure of measurement unit lace letters MK. 3.37. The diagram should indicate the designations of outputs (contacts) of elements (devices) applied to the product or installed in their documentation. If in the design of the element (device) and in its documentation, the conclusions (contacts) are not specified, then it is allowed to conditionally assign them the designations in the diagram, repeating them later in the relevant design documents.

* Heck. 6 - 9 excluded. - With the conditional assignment of the designations, the contacts on the schema field place the corresponding explanation on the schema field. When an image of several identical elements (devices) of the conclusions (contacts), it is allowed to be indicated on one of them.

* Heck. 10 is excluded. With a separated method of an image of the same elements (devices) of the conclusions (contacts), indicate each component of the element (device). To distingvia on the indication scheme of the conclusions (contacts) from other designations (chain designations, etc.), it is allowed to record the designations of the conclusions (contacts) with a qualifying symbol in accordance with the requirements of GOST 2.710-81. 3.38. When an element or device is image, an explanatory inscription is placed around one component of the product or on the diagram field near the image of the element or device performed by the combined method. (Modified edition, change No. 3). 3.39. The diagram is recommended to indicate the characteristics of the input and output chains of the product (frequency, voltage, current strength, resistance, inductance, etc.), as well as parameters to be measured on control contacts, nests, etc. If you cannot specify the characteristics or parameters of the input and output chains of the product, it is recommended to indicate the name of the chains or controlled values. 3.40. If the product is obviously designed to work only in a specific product (installation), then the diagram allows you to specify addresses of external connections input and output chains of this product. The address must ensure the uniqueness of attachment, for example, if the output contact of the product must be connected to the fifth contact of the third device connector BUT The address must be recorded as follows: \u003d BUT - X3. :5 . It is allowed to indicate the address in generalif the unambiguousness of attachment is provided, for example, " BUT" 3.41. The characteristics of the input and output circuits of the product, as well as the addresses of their external connections, it is recommended to record in the tables placed in return on the conditional graphic designations of the input and output elements - connectors, boards, etc. (Damn 12).

Each table is assigned the positional designation of the element, which is placed instead of the conditional graphic designation. Above the table is allowed to indicate the conditional graphic designation of the contact - the socket or pin. Tables are allowed to be executed by the method. The order of the contacts in the table is determined by the convenience of constructing the scheme. It is allowed to place tables with chain characteristics in the presence of the conditional graphic designations of the input and output elements - connectors, boards, etc. (Damn 13).

Similar tables are recommended to be placed on the lines depicting input and output chains and not ending with connector, boards, etc. In this case, the positional designations are not assigned to the tables. Notes: 1. If there are several tables in the schema, the table head is allowed to bring only one of them. 2. In the absence of characteristics of input and output circuits or addresses of their external connection, the table does not result in a graph with these data. If necessary, additional graphs are allowed into the table. 3. It is allowed to be affixed in the column "Cont." Several serial contact numbers in case they are interconnected. Contact numbers separate comma from each other. 3.42. As an image in the multi-contact connector scheme, conventional graphic notes that do not show individual contacts are allowed (GOST 2.755-87). Connector contact information indicates in one of the following methods: - near the image of the connectors, on the free field of the circuit or on the subsequent sheets of the circuit, the tables are placed in which the address of the compound [Chain designation (Damn 14a) and (or) is the positional designation of the elements attached to To this contact (Damn 14B)]. If necessary, the table indicates the characteristics of the chains and addresses of external connections (damn 14a). If the tables are placed on the field of the circuit or on the subsequent sheets, they are assigned the positional designations of the connectors to which they are composed.

In the columctions of the tables indicate the following data: in the column "Cont." - Connector contact number. Contact numbers are recorded in ascending order; In the column "Address" - the designation of the chain and (or) the positional designation of the elements connected to the contacts. in the chain column - the chain characteristic; in the column "EXTERNAL" - the address of the external connection; - Connections with connector contacts are depicted with a separated method (damn 15).

Heck. fifteen. (New edition, change No. 3). Notes: 1. Points connected by a dash line with a connector indicate connections with the corresponding contacts of this connector. 2. If necessary, the chart characteristics are placed on a free field of a circuit over the continuation of communication lines. (Modified edition, change No. 3). 3.38. - 3.42. (Modified edition, change No. 2). 3.43. As an image on the element scheme, the parameters of which are selected during the adjustment, near the positional designations of these elements in the diagram and in the list of elements are stoles (for example R. 1* ), And on the field of the circuit, the footnote is placed: "* Pick when adjusting." The list should be recorded elements whose parameters are closest to the calculated one. The limit values \u200b\u200bof the parameters of the elements are allowed when selecting the limits in the list in the "Note" column. If the parameter selected when adjusting is provided with elements of various types, these items are listed in the technical requirements on the schema field, and in the graph of the element list indicate the following data: in the "Name" column - the name of the element and the parameter is the closest to the calculated; In the Count "Note" - a reference to the appropriate item of technical requirements and allowed when selecting the limit values \u200b\u200bof the parameters. 3.44., 3.45. (Excluded, change No. 2). 3.46. If a parallel or serial connection is carried out to obtain a specific value of the parameter (container or resistance of a certain value), then in the list of elements in the "Notes" column indicate the total (total) parameter of the elements (for example, R \u003d 151 com). 3.47. (Excluded, change No. 2). 3.48. When the device (or devices) is displayed as a rectangle, it is allowed in a rectangle instead of the conditional graphic designations of the input and output elements to place the tables with the characteristics of the input and output chains (damn 18), and outside the rectangle is allowed to place tables with the addresses of external connections (features 19 ). If necessary, additional graphs are allowed into the tables.

* Heck. 16, 17 are excluded. Each table is assigned the positional designation of the element, which is placed instead of the conditional graphic designation. In the table instead of the word "Cont." It is allowed to place the conventional graphic designation of the connector's contact (see Damn 19); - On the product scheme in rectangles, depicting devices, it is allowed to place structural or functional diagrams of devices, or to completely or partially repeat their concept schemes. Elements of these devices in the list of items are not recorded. If there are several identical devices in the product, the device circuit is recommended to be placed on a free field of the product scheme (and not in a rectangle) with an appropriate inscription, for example: "blocks of blocks A1 - A4." (Modified edition, change No. 2). 3.49. - 3.51. (Excluded, change No. 2). 3.52. The field of the scheme is allowed to place indications of brands, sections and colors of wires and cables (stranded wires, electrical cords), which must be made of elements, as well as indications of specific electrical installation requirements of this product. (Modified edition, change No. 2).

4. Rules for performing connection schemes

4.1. On the connection diagram, all devices and elements included in the product, their input and output elements (connectors, boards, clamps, etc.), as well as connections between these devices and elements should be depicted. 4.2. Devices and elements in the diagram are depicting: devices - in the form of rectangles or simplified external outlines; Elements - in the form of conventional graphic designations, rectangles or simplified external outlines. When the elements are depicted in the form of rectangles or simplified external outlines, it is allowed inside them to place the conditional graphic designations of the elements. Input and output elements are depicted as conditional graphic designations. Input and output elements are allowed to depict according to the rules installed in PP. 3.41, 3.42 and 3.48. 4.1., 4.2. (Modified edition, change, No. 2). 4.3. The arrangement of the graphic designations of devices and elements in the diagram should roughly correspond to the actual placement of elements and devices in the product. The location of images of input and output elements or outputs inside graphic designations and devices or elements should roughly correspond to their actual placement in the device or item. It is allowed in the diagram not to reflect the location of devices and elements in the product, if the scheme is performed on several sheets or placement of devices and elements at the site of operation is unknown. 4.4. The elements used in the product are partially allowed to be depicted in the scheme with incompleteness, limited by the image of only parts used. 4.5. In the diagram, the graphic designations of devices and elements indicate the positional notation assigned to them on the concept. Around or inside the graphical designation of the device, it is allowed to specify its name and type and (or) designation of the document, on the basis of which the device is applied. (Modified edition, change No. 2). 4.6. (Excluded, change No. 2). 4.7. The diagram should indicate the designations of outputs (contacts) of elements (devices) applied to the product or installed in their documentation. If in the design of the device or element and in its documentation, the designation of the input and output elements (conclusions) are not specified, then it is allowed to conditionally assign them the designations in the diagram, repeating them later in the relevant design documents. With the conditional assignment of the designations input and output elements (outputs) on the schema field, the corresponding explanation is placed. As a picture of several identical devices, the conclusions on the diagram are allowed to be indicated on one of them (for example, the cesspillage of electrical pumping devices). 4.8. Devices and elements with the same external connections are allowed to depict the circuit with the connection only for one device or item. 4.9. Devices having independent schemes Connections, it is allowed to depict the scheme of the product without showing the connections of the wires and cores (stranded wires, electrical cords) to the input and output elements. 4.10. As an image on the connector scheme, it is allowed to apply conditional graphics notes that do not show individual contacts (GOST 2.755-87). In this case, near the image of the connector, on the schema field or on the subsequent sheets of the circuit, the tables are placed with an indication of the contact connectivity (damn 20). When placing tables on the field of the scheme or on the subsequent, sheets impregnate the positional designations of the connectors, in addition to which they are composed.

Heck. twenty. (New edition, change No. 3). It is allowed in the table to enter additional graphs (for example, data of the wire). If the harness (cable is a stranded wire, the electric cord, the wire group) connects the same connector contacts, then the table is allowed to place around one end of the image of the harness (cable - stranded wire, electric cord, wire groups). If the contact connection information is provided in the table of connections, then the tables indicating the connection of the contacts in the diagram is allowed not to place. (Modified edition, change No. 3). 4.11. On the product scheme inside rectangles or simplified external outlines depicting devices, it is allowed to portray their structural, functional or conceptual circuits. 4.12. In the absence of the concept of the product on the diagram of the compounds, the positional designations are assigned the positional designations, as well as elements that are not included in the concepts of components of the product, according to the rules set in paragraphs. 3.16 - 3.20, and write them into the list of items. 4.9. - 4.12. (Modified edition, change No. 2). 4.13. On the product connection diagram it is allowed to show external connections of the product according to the rules installed in PP. 5.8, 5.9. 4.14. Wires, wire groups, harnesses and cables (stranded wires, electrical cords) must be shown in the diagram of individual lines. The thickness of the lines depicting the wires, harnesses and cables (stranded wires Electrical sheets) in the diagrams should be from 0.4 to 1 mm. To simplify the design of the circuit, it is allowed to merge individual wires or cables (stranded wires, electrical cords), which are in the diagram in one direction, into the total line. When approaching contacts, each wire and core core (stranded wire, electric cord) are depicted by a separate line. The lines depicting wires, wire groups, harnesses and cables (stranded wires, electrical cords), not to carry out or turn them near the attachment places, if their image makes it difficult to read the scheme. In these cases, the scheme near the attachment points (damn 21) or in the table on the free field of the circuit (features 22) is placed in the amount sufficient to ensure a unambiguous connection.

Heck. 22. (New edition, change No. 3). 4.15. On the product scheme, which includes multi-contact elements, lines depicting harnesses (cables - stranded wires, electric cords, wire groups), allowed only to the circuit of the graphic designation of the element, without showing the connection to the contacts. Guidelines for connecting wires or cable (stranded wire, electric cord) to contacts in this case, in this case, in one of the following methods; Contacts show the ends of the lines depicting wires or cable veins (stranded wire, electric cord), and indicate their designations. The ends of the lines are sent towards the corresponding harness, cable (stranded wire, electric cord), wire groups (damn 23); The image of a multi-contact element is placed with a table with an indication of the connection of the contacts. The table is connected to the linte-tuning with a corresponding harness, a cable, (stranded wire, electrical cord) by a group of wires (damn 24). 4.16. Introductory elements through which the wires pass (a group of wires, harnesses, cables are stranded wires, electrical cords), are depicted as conditional graphic designations installed in the standard design documentation standards.

but - LIA depicting wire (wire group, harness, cable - stranded wire, electric cord)

The passage insulators, the germinations, the glands are depicted as conditional graphic designations shown. 25. 4.14 - 4.16. (Modified edition, change No. 2). 4.17. The diagram should indicate the designations of introductory elements applied to the product. If the designations of the introductory elements are not specified in the design of the product, it is allowed to conditionally assign them the designations on the diagram of the compounds, repeating them in the appropriate design documentation. In this case, the necessary explanations are placed on the schema field. 4.18. Single-core wires, harnesses, cables (stranded wires, electric cords) must be indicated by sequence numbers within the product. Wires, harnesses, cables (stranded wires, electrical cords) should be numbered separately. In this case, the wires included in the harness are numbered within the harness, and the cable veins (stranded wire, electrical cord) - within the cable (stranded wire, electric cord). Notes: 1. It is allowed through the numbering of all wires and cables (stranded wires, electrical cords) within the product. 2. It is allowed through the numbering of individual wires, harnesses and cables (stranded wires, electrical cords) within the product. In this case, the wires included in the harness are numbered within the harness, and the cable veins (stranded wire, electrical cord) - within the cable (stranded wire, electric cord). 3. It is allowed not to denote the harnesses, cables (stranded wires, electrical cords) and individual wires, if the product on which the scheme is made will enter the complex and designations of harness, cables (stranded wires, electric cords) and wires will be assigned within the total complex . 4. It is allowed to assign the designations of wire groups. 4.19. If the concept of electrical circuits are assigned to the electrical circuits in accordance with GOST 2.709-89, then all single-core wires, cable veins (stranded wires, electrical cords) and wiring harnesses are assigned the same designations. At the same time, harnesses and cables (stranded wires, electrical cords) are denoted in accordance with the requirements of clause 4.18. (Modified edition, change No. 3). 4.20. In the diagram with the help of alpoint (alphanumeric) designation, it is allowed to determine the functional accessory of the wire, harness or cable (stranded wire, electric cord) to a specific complex, room or functional chain. The letter (alphanumeric) designation is affixed before the designation of each wire, harness, cable (stranded wire, electric cord), separating it with a sign of the hyphen. In this case, the letter (alphanumeric) designation is included in the designation of each wire, harness and cable (stranded wire, electrical cord). The design in the designation is allowed not to be stailed if it does not make an ambiguity in reading the scheme. If all wires, harnesses, cables (stranded wires, electrical cords) shown in the diagram, belong to one complex, room or functional chain, then the letter (alphanumeric) designation is not affixed, and the corresponding explanation is placed on the field. 4.21. Rooms of wires and cores (stranded wires, electrical cords) on the diagram are affixed, as a rule, near both ends of images. The numbers of cables (stranded wires, electrical cords) are lined in circles placed in the breaks of images of cables (stranded wires, electric cords) near the branch locations. The harness numbers are affixed on the shelves of lines-calls near the branching points of the wires. Rooms of wire groups are affixed near lines. Notes: 1. With the designation of cables (stranded wires, electrical cords) in accordance with the requirements of clause 4.20, as well as with a large number of cables (stranded wires, electrical cords), which are in the diagram in one direction, allowed the number of cables (stranded wires, Electric cords) are styled in a lines of the line without circumference. 2. When an image on the scheme of wires, harnesses and cables (stranded wires, electrical cords), the number of large lengths are made through gaps determined by the convenience of using the circuit. 4.22. The scheme should indicate: for single-core wires - brand, section and, if necessary, color; For cables (stranded wires, electrical cords) recorded in the specification as a material - a brand, the amount and cross-section lived and, if necessary, the number of occupied lived. The number of employed veins point in a rectangle placed on the right of the denotation of cable data (stranded wire, electric cord); For harnesses, cables and wires manufactured according to the drawings, the designation of the main design document. The diagram contains the characteristics of the input and output circuits of devices and elements or other source data necessary to select specific wires and cables (stranded wires, electrical cords), if, when developing a circuit of the complex, data on wires and cables (stranded wires, electrical cords) cannot be defined. The characteristics of the input and output chains are recommended to be specified as tables (p. 3.41) placed instead of the conditional graphic designations of the input and output elements. 4.23. Data (brand, section, etc.) On wires and cables (stranded wires, electrical cords) indicate near lines depicting wires and cables (stranded wires, electrical cords). In this case, it is allowed to designate wires and cables (stranded wires, electric cords) without assign. When specifying data on the wires and cables (stranded wires, electrical cords) as a conventional designation, these designations are decrypted on the schema field. The same brand, cross section and other data on all or most wires and cables (stranded wires, electrical cords) is allowed to be specified on the schema field. 4.24. If the scheme does not indicate the locations of the attachments (for example, individual contacts in the connectors image) are not shown) or finding the locations of the wires of the connections and the cable (stranded wire, electric cord), then the data on the wires, harnesses and cables (stranded wires, electrical cords) And the addresses of their connections are reduced to the table, called the "Connection Table". The table of connections should be placed on the first sheet of the circuit or perform in the form of an independent document. The table of compounds placed on the first sheet of the scheme is, as a rule, above the main inscription. The distance between the table and the main inscription must be at least 12 mm. The continuation of the connections table is placed on the left of the main inscription, repeating the table head. The table of compounds in the form of an independent document is performed on A4 format. The main inscription and additional graphs to it are performed according to GOST 2.104-68 (form 2 and 2a). 4.25. The form of the connection table selects the schema developer depending on the information you need to place on the diagram (features 26). In the columns of the tables indicate the following data: in the "Wire designation" column - the designation of a single-core wire, cable veins (stranded wire, electric, cord) or harness; In the graphs, "where comes", "where comes" - conditional alphanumeric designations of the connected elements or devices; In the column "compounds" - the conditional alphanumeric designations of the connected elements or devices, separating their comma; In the column "Wire data": for a single-core wire - brand, section and, if necessary, coloring in accordance with the document, on the basis of which it is used; For cable (stranded wire, electric cord) recorded in the specification as a material, a brand, a cross-section and the amount of live in accordance with the document, on the basis of which the cable is used (multicore wire, electric cord); In the Count "Note" - additional clarifying data. Notes: 1. Sizes Graph recommended. 2. The columns are allowed to divide into subgraphs. 4.26. When filling out the connection table, follow the following order: when you perform connections with separate wires, the wires are recorded in the order of increasing the numbers assigned to them;

When performing connections with knitting harness or cable veins (stranded wires, electrical cords) before recording of the wires of each harness or lived each cable (stranded wire, electric cord), the title is placed, for example: "harness 1" or "ABB HVXXXXXX.032"; "Cable 3" or "Cable ABBG.HHHXXXX.042"; "Wire 5". Wires of harness or cable veins (stranded wire, electric cord) are recorded in ascending order of numbers assigned to wires or veins; When performing connections with separate wires, wiring harnesses and cables (stranded wires, electrical cords), the compound table first recorded separate wires (without title), and then (with the corresponding headers) wiring harnesses and cables (stranded wires, electrical cords); If insulating tubes, shielding braids, etc. must be attached to separate wires, then the corresponding instructions are placed in the "Note" column. It is allowed to place these instructions on the schema field. Note. When the connection scheme is applied, another recording procedure is allowed only if it is installed in industry standards. 4.27. On the diagram of the compounds near both ends of the lines depicting separate wires, the wires of the harnesses and cable veins (stranded wires, electrical cords) is allowed to specify the address of the connections. In this case, the table of compounds do not constitute. Notation Wires Allowed not to assign. 4.28. On the field of the scheme over the main inscription, it is allowed to place the necessary technical instructions, for example: requirements for the inadmissibility of joint laying of some wires, harnesses and cables (stranded wires, electric cords); the magnitudes of the minimum permissible distances between wires, harness and cables (stranded wires, electric cords); data on the specificity of laying and protect wires, harnesses and cables (stranded wires, electric cords), etc. 4.18. - 4.28. (Modified edition, change No. 2).

5. Connection schemes

5.1. The connection scheme should contain the product, its input and output elements (connectors, clips, etc.) and the ends of the wires and cables (stranded wires, electrical cords) of the external installation, which are placed on the connection of the product [Specifications external chains and (or) addresses]. 5.2. The product in the diagram is depicted in the form of a rectangle, and its input and output elements are as conditional graphic designations. It is allowed to portray the product in the form of simplified external outlines. Input and output elements are depicted in this case as simplified external outlines. 5.1, 5.2. (Modified edition, change No. 2). 5.3. The placement of images of input and output elements inside the graphic designation of the product should approximately correspond to their valid placement in the product. 5.4. The diagram should indicate the positional notation of the input and output elements assigned to them on the product schema. 5.5. Introductory elements (for example, seals, germinats, passing insulators) through which wires or cables (stranded wires, electrical cords) are depicted in the scheme according to the rules set in clause 4.16. (Modified edition, change No. 2). 5.6. The diagram should indicate the designations of the input, output or output elements applied to the product. If the designations of the input, output and output elements in the design of the product are not specified, then it is allowed to conditionally assign them the designations in the diagram, repeating them in the relevant design documentation. In this case, the necessary explanations are placed on the schema field. 5.7. In the scheme near the conditional graphic designations of the connectors to which the wires and cables (stranded wires, electrical cords) are attached, it is allowed to indicate the names of these connectors and (or) designations of documents on the basis of which they are applied. 5.8. Wires and cables (stranded wires, electrical cords) must be shown in the diagram of individual lines. 5.9. If necessary, the scheme indicates brands, sections, colors of wires, as well as the brand of cables (stranded wires, electrical cords), quantity, cross-section and employment. When specifying stamps, sections and coloring of wires in the form of conventional designations on the schema field decrypt these designations. 5.7. - 5.9. (Modified edition, change No. 2).

6. Rules for the implementation of general schemes

6.1. The general diagram depicts devices and elements included in the complex, as well as wires, harnesses and cables (stranded wires, electrical cords) connecting these devices and elements. 6.2. Devices and elements on the diagram are departed as rectangles. It is allowed to depict elements in the form of conventional graphic designations or simplified external outlines, and devices - in the form of simplified external outlines. The arrangement of graphic designations, devices and elements in the diagram should approximately correspond to the actual placement, elements and devices in the product. It is allowed in the diagram not to reflect the location of devices and elements in the product, if the placement of them at the place of operation is unknown. In these cases, graphic designations of devices and elements should be located so that the simplicity and visibility of the electrical connections are provided between them. 6.1, 6.2. (Modified edition, change No. 2). 6.3. On the graphic designations of devices and elements, the input, output and introductory elements are depicted according to the rules set in PP. 4.10, 4.16. The location of the conditional graphic designations of the input, output and introductory elements inside the images of devices and elements should approximately correspond to their valid placement in the product. If, to ensure the visibility of the compounds of compounds, the location of the graphic designations of these elements does not correspond to their actual placement in the product, the corresponding explanation must be placed on the field field. 6.4. The diagram must be indicated: for each device or element depicted in the form of a rectangle or simplified external outlines - their name and type and (or) designation of the document on the basis of which they are applied; For each element depicted in the form of a conditional graphic notation, its type and (or) designation of the document. With a large number of devices and items, it is recommended to record this information into the list of items. In this case, near the graphic designations of devices and elements affix the positional notation. (Modified edition, change No. 2). 6.5. Devices and elements grouped into posts and (or) premises, it is recommended to record the list of posts and (or) premises. 6.6. The diagram should indicate the designations of input, output and introductory elements deposited on the product. If the designations of the input, output and introductory elements in the design of the product are not specified, then it is allowed to conditionally assign the designations in the diagram by repeating them in the relevant design documentation. In this case, the necessary explanations are placed on the schema field. 6.7. The diagram allows you to specify the designations of connector documents on the shelves of lines-calls, as well as the number of connector contacts, using their next conditional graphic designation (features 27).

(New edition, change No. 3). 6.8. Wires, harnesses and cables (stranded wires, electrical cords) should be shown in the diagram of individual lines and designated separately by sequence numbers within the product. It is allowed through the numbering of wires, harnesses and cables (stranded wires, electric cords) within the product, if the wires included in the harnesses are numbered within each harness. If the concept of electrical circuits are assigned to the electrical circuit in accordance with GOST 2.709-72, then all single-core wires, cable veins (stranded wires, electrical cords) and wiring harnesses are assigned the same designations. 6.9. If a multiple complexes are included in the product to be developed by the scheme, then single-core wires, cables (stranded wires, electrical cords) and harnesses should be numbered within each complex. The belonging of a single-core wire, a harness, cable (stranded wire, electric leaf) to a specific complex is determined by the letter (alphanumeric) designation, which is supplied to the number of each single-core wire, harness and cable (stranded wire, electric cord) to the Detais discharge. 6.10. It is allowed in the diagram using the letter (alphanumeric) designation to identify the belonging of the wire, harness or cable (stranded wire, electrical cord) to certain rooms or functional circuits according to the rules set in clause 4.20. 6.11. The number of single-core wires on the diagram are affixed near the ends of the images; The numbers of single-core short wires that are clearly visible in the diagram are allowed to be placed near the middle of the images. 6.12. Cable numbers (stranded wires, electrical cords) are affixed in circles placed in cable breaks (stranded wires, electrical cords). Note. With the designation of cables (stranded wires, electrical cords) in accordance with the requirements of PP. 6.9, 6.10, notation in the circumference does not fit. 6.7 - 6.12. (Modified edition, change No. 2). 6.13. The harness numbers are affixed on the shelves of lines. 6.14. The scheme near the image of single-core wires, harnesses and cables (stranded wires, electrical cords) indicate the following data: for single-core wires - brand, section and, if necessary, color; for cables (stranded wires, electrical cords) recorded in the specification as a material - brand, quantity and section live; For wires, cables and harnesses made according to the drawings, the designation of the main design document. If, when developing a circuit, data on wires and cables (stranded wires, electrical cords), paved during installation, cannot be defined, then the scheme leads the corresponding explanations indicating the source data necessary to select specific wires and cables (stranded wires, electric cords ). With a large number of connections, the specified information is recommended to record a list of wires, harnesses and cables (stranded wires, electrical cords). 6.15. The list of wires, harnesses and cables (stranded wires, electrical cords) (damn 28) is placed on the first sheet of the scheme, as a rule, above the main inscription or are performed as follow-up.

The following data indicates in the graph of the list: in the "Designation" column - the designation of the main design document of the wire, cable (stranded wire, electric cord), harness made according to drawings; In the column "Note" - cables (stranded wires, electrical cords) supplied with a complex or paved when installing it; Cables (stranded wires, electric cords) deployed during installation, allowed in a list of not to enter. 6.14, 6.15. (Modified edition, change No. 2). 6.16. The general scheme, if possible, should be performed on one sheet. If the scheme due to the complexity of the product can not be performed on one sheet, then: on the first sheet, the product is drawn up the product as a whole, depicting posts and (or) premises with the conditional outlines and showing the relationship between posts and (or) premises. Inside the conditional outlines of posts and / or premises, only those devices and elements to which the wires and cables are added (stranded wires, electrical cords) connecting posts and (or) premises are depicted. On other sheets, they fully draw the schemes of individual posts and (or) premises or groups of posts and (or) premises; The general scheme of each complex is performed on a separate sheet if several complexes are included in the product. (Modified edition, change No. 2).

7. Rules for performing location schemes

7.1. The location scheme contains components of the product, and if necessary, the relationship between them, the design, room or the locality, on which these components will be located. 7.2. The components of the product are depicted in the form of simplified external outlines or conditional graphic designations. 7.3. Wires, wire groups, harnesses and cables (stranded wires, electrical cords) are depicted as separate lines or simplified external outlines. 7.2, 7.3. (Modified edition, change No. 2). 7.4. The arrangement of the graphic designations of the component parts of the product in the diagram should ensure the correct idea of \u200b\u200btheir actual placement in the design, room, on the ground. 7.5. When performing the location scheme, it is allowed to apply various methods constructing (axonometry, plan, conditional scan, construct cut, etc.). 7.6. The diagram should indicate: for each device or element depicted in the form of a simplified external outline - their name and type and (or) designation of the document, on the basis of which they are applied; For each element depicted in the form of a conditional graphic notation, its type and (or) designation of the document. With a large number of devices and items, it is recommended to record this information into the list of items. In this case, near the graphic designations of devices and elements affix the positional notation. (Modified edition, change No. 2). Section. eight. (Excluded, change No. 2).

ATTACHMENT

Reference

Information details on accordance with GOST 2.702-75 ST SEV 1188-78

Section number GOST 2.702-75	Section number ST SEV 1188-78	Section number GOST 2.702-75	Section number ST SEV 1188-78

(Introduced additionally, change No. 2).

GOST 2.702-2011

Group T52.

Interstate standard

Unified system of design documentation

Electric circuits

Unified System of Design Documentation. Rules for Presentation of Electric Schemes

ISS 01.100
OKSTA 0002.

Date of introduction 2012-01-01

Preface

Objectives, basic principles and the main procedure for working on interstate standardization GOST 1.0-92 "Interstate standardization system. Basic provisions" and GOST 1.2-2009 "Interstate standardization system. Standards interstate, rules and recommendations on interstate standardization. Development rules, adoption, Applications, updates and cancellation "

Information about standard

1 Developed by the Federal State Unitary Enterprise "All-Russian Research Institute of Standardization and Certification in Mechanical Engineering" (FSUE "VNIINMASH"), Autonomous Non-Profit Organization "Research Center CALS-Technologies" Applied Logistics "(ANO NIC CALS-technologies" Applied Logistics " )

2 introduced by the Federal Agency for Technical Regulation and Metrology

3 Adopted by the Interstate Council for Standardization, Metrology and Certification (Protocol of May 12, 2011 N 39)

For the adoption of the standard voted:

Short name of the country on MK (ISO 3166) 004-97		Abbreviated name of the National Standardization Authority
Azerbaijan		Azstandard
		Ministry of Economy of the Republic of Armenia
Belarus		Gosstandart of the Republic of Belarus
Kazakhstan		Gosstandart of the Republic of Kazakhstan
Kyrgyzstan		Kyrgyzstandart
		Moldova Standard
the Russian Federation		Rosstandard.
Tajikistan		Tajikstandard
Uzbekistan		Ustanndart
		State StandStandart of Ukraine

4 by the order of the Federal Agency for Technical Regulation and Metrology of August 3, 2011 N 211-ST Interstate Standard GOST 2.702-2011 was enacted as the National Standard of the Russian Federation from January 1, 2012

5 Instead of GOST 2.702-75


Information on the introduction of (termination) of this Standard is published in the National Standards Index.

Information about the changes to this standard is published in the "National Standards" index, and the text of the changes - in the information signs "National Standards". In case of revision or cancellation of this standard, relevant information will be published in the information indicator "National Standards"

1 area of \u200b\u200buse

1 area of \u200b\u200buse

This standard applies to electrical schemes of products of all industries, as well as electrical schemes of energy facilities and establishes rules for their implementation.

Based on this standard, it is allowed, if necessary, develop standards for the implementation of electrical schemes of products of specific types of equipment, taking into account their specifics.

2 Regulatory references

This standard uses regulatory references to the following interstate standards:

GOST 2.051-2006 Unified system of design documentation. Electronic documents. General provisions

GOST 2.053-2006 Unified system of design documentation. Electronic structure of the product. General provisions

GOST 2.104-2006 Unified system of design documentation. Main inscriptions

GOST 2.701-2008 Unified system of design documentation. Schemes. Types and types. General requirements for implementation

GOST 2.709-89 Unified system of design documentation. Designations Conditional wires and contact compounds of electrical elements, equipment and sections of chains in electrical circuits

GOST 2.710-81 Unified system of design documentation. Designations of alphanumeric in electrical circuits

GOST 2.721-74 Unified system of design documentation. Conditional graphic designations in schemes. General application

GOST 2.755-87 Unified system of design documentation. Designations conditional graphic in electrical circuits. Commutation and contact connections

Note - When using this standard, it is advisable to check the action of reference standards in information system General use - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or on the National Standards Annually Published Information Signal, which is published as of January 1 of the current year, and according to the corresponding monthly information indicators published in the current year. If the reference standard is replaced (changed), then when using this standard should be guided by replacing (modified) standard. If the reference standard is canceled without replacement, the position in which the reference is given to it is applied in a portion that does not affect this link.

3 Terms, Definitions and Reducing

3.1 This standard applies the following terms with the corresponding definitions:

3.2 This standard applies the following abbreviations:

ECCD - a unified system of design documentation;

Hugo - conditional graphics symbols;

ECI - electronic structure of the product;

CD - design document.

4 Basic provisions

4.1 Electrical circuit - document containing in the form conditional images or designations Composite parts of the product acting using electrical Energy, and their relationships.

4.2 Electrical circuits can be made as paper and (or) electronic CD.

4.3 General requirements for implementation, types and types of schemes - according to GOST 2.701.

Rules for constructing conditional alphanumeric designations of elements, devices and functional groups in electrical circuits - according to GOST 2.710.

Note - If the electrical circuit is performed as an electronic CD, it is necessary to additionally be guided by GOST 2.051.

4.4 Electrical circuits Depending on the main purpose, divided into the following types:

- structural;

- functional;

- principled;

- compounds;

- connections;

- general;

- location.

4.5 It is allowed to put the explanatory inscriptions, diagrams or tables on the diagram defining the sequence of processes in time, as well as specify the parameters in the characteristic points (the values \u200b\u200bof currents, stresses, shapes and the values \u200b\u200bof pulses, mathematical dependencies, etc.).

5 rules for performing schemes

5.1 Rules for the implementation of structural schemes

5.1.1 The structural diagram depicts all the main functional parts of the product (elements, devices and functional groups) and the main relationship between them.

5.1.2 Functional parts The diagram is depicted in the form of rectangles or hugo.

5.1.3 The graphic construct of the scheme should provide the best idea of \u200b\u200bthe sequence of interaction between functional parts in the product.

On lines of relationships, it is recommended to designate the direction of the processes occurring in the product.

5.1.4 The scheme should indicate the names of each functional part of the product, if a rectangle is applied to its designation.

The diagram allows you to specify the type of element (device) and (or) designation of the document (the main design document, standard, technical conditions), on the basis of which this element (device) is applied.

When the functional parts are depicted in the form of rectangles of the names, types and designations are recommended to fit into the rectangles.

5.1.5 With a large number of functional parts, it is allowed instead of the names, types and designations to lift the ordinal numbers to the right of the image or above it, as a rule, from top to bottom in the direction from left to right. In this case, the names, types and notation are indicated in the table placed on the schema field.

5.2 Rules for performing functional schemes

5.2.1 The functional diagram depicts the functional parts of the product (elements, devices and function groups) involved in the process illustrated by the circuit and the connection between these parts.

5.2.2 Functional parts and interrelations between them in the diagram are depicted in the form of hugo installed in ECC standards. Separate functional parts are allowed to portray in the form of rectangles.

5.2.3 The graphical construction of the scheme should give the most visual representation of the sequence of processes illustrated by the scheme.

5.2.4 Elements and devices are depicted in the schemes in a combined or separated method.

5.2.5 With the combined method, the components of the elements or devices are depicted in the diagram in close proximity to each other.

5.2.6 With a separated method, composite parts of elements and devices or individual elements of devices are depicted in the diagram in different places in such a way that individual chains of the product are depicted most clearly.

Discussion is allowed to depict all and individual elements or devices.

When performing diagrams, it is recommended to use the line method. In this case, the hugo elements or their constituent parts included in one chain are depicted successively by each other in a straight line, and individual chains are near, forming parallel (horizontal or vertical) strings.

When performing a diagram, the strings of the Arabic figures are allowed to numbered (see Figure 1).

Picture 1

5.2.7 In the image of elements or devices, the separated method is allowed on the free field of the scheme to place the hugo elements or devices performed by the combined method. In this case, the elements or devices used in the product are partially depicted fully indicating the used and unused parts or elements (for example, all contacts of the multi-contact relay).

Conclusions (Contacts) of unused elements (parts) are depicted in short than conclusions (contacts) of the elements used (parts) (see Figure 2).

Figure 2.

5.2.8 Schemes are performed in a multi-cable or unicineal image.

5.2.9 With a multi-line image, each chain is depicted by a separate line, and the elements contained in these chains are separate hug (see Figure 3 but).

but - Multicore image	b. - Single Picture

Figure 3.

5.2.10 With a single-line image of a chain that perform identical functions are depicted by one line, and the same elements of these chains are one hug (see Figure 3 b.).

5.2.11, if necessary, the scheme denotes electrical chains. These designations must comply with the requirements of GOST 2.709.

5.2.12 When an image on the same diagram of various functional circuits is allowed to distinguish between their thickness thickness. In one scheme, it is recommended to use no more than three dimensions of the lines in thickness. If necessary, the corresponding explanations are placed on the schema field.

5.2.13 To simplify the scheme, it is allowed to merge several electrically related lines of interconnection into a group relationship line, but when approaching contacts (elements), each line of relationships are depicted by a separate line.

When merging the interconnection lines, each line is tagged at the fusion site, and if necessary, both on both ends with conventions (numbers, letters or a combination of letters and numbers) or notation adopted for electrical circuits (see 5.2.11).

Line designations are affixed in accordance with the requirements given in GOST 2.721.

The lines of electrical relationships drained in the group of group relationships, as a rule, should not have branches, i.e. Any conditional number should meet on a group relationship line twice. If you need to branch, their number indicates after the order number of the line through a fractional line (see Figure 4).

Figure 4.

5.2.14 It is allowed if it does not complicate the scheme, separately depicted parts of the elements connect the line of mechanical interconnection indicating their belonging to one element.

In this case, the positional designations of the elements are affixed by one or both of the ends of the mechanical relationship.

5.2.15 The scheme should indicate:

- for each functional group - the designation assigned to it on the schematic diagram, and (or) its name; If the functional group is depicted in the form of hugo, then its name does not indicate;

- for each device depicted in the form of a rectangle - a positional designation assigned to it on a schematic diagram, its name and type and (or) designation of the document (the main design document, standard, technical conditions), on the basis of which this device was applied;

- for each device depicted in the form of hugo, is a positional designation assigned to it on a schematic diagram, its type and (or) document designation;

- For each element, a positional designation assigned to it on a schematic diagram, and (or) its type.

The designation of the document, on the basis of which the device was applied, and the type of item is allowed not to indicate.

Names, types and designations are recommended to fit into rectangles.

5.3 Rules for implementing the schematic diagrams

5.3.1 The schematic diagram depicts all electrical elements or devices necessary for carrying out and controlling the product of installed electrical processes, all electrical relationships between them, as well as electrical elements (connectors, clamps, etc.), which end the input and output chains.

5.3.2 The scheme is allowed to portray the connecting and mounting elements installed in the product according to constructive considerations.

5.3.3 Schemes are performed for products located in a disconnected position.

In technical cases, individual elements of the scheme are allowed to depict in the selected operating position with an indication of the mode circuit field for which these elements are depicted.

5.3.4 Elements and devices that are installed in ESCD standards are depicted in the scheme in the form of these hugo.

Note - If the hugo standards are not established, the developer performs the coo in the field fields and gives explanation.

5.3.5 The elements or devices used in the product are partially allowed to portray the scheme not completely, limited by the image of only parts used or elements.

5.3.6 When implementing the concept, it is allowed to use the provisions specified in 5.2.4-5.2.14.

5.3.7 Each element and (or) a device having an independent principal scheme and considered as an element included in the product and shown in the diagram must have a designation (positional designation) in accordance with GOST 2.710.

Devices that do not have independent schematic diagrams and functional groups are recommended to assign designations in accordance with GOST 2.710.

5.3.8 Positional designations Elements (devices) should be assigned within the product (installation).

5.3.9 The sequence numbers of the elements (devices) should be assigned, starting from the unit, within the group of elements (devices), which in the diagram is assigned the same letter positional designation, for example,, etc. ,,,, etc.

5.3.10 The sequence numbers should be assigned in accordance with the sequence of the location of the elements or devices on the diagram from top to bottom in the direction from left to right.

If necessary, it is allowed to change the sequence of assignment of sequence numbers depending on the placement of the elements in the product, the direction of passage of signals or the functional sequence of the process.

When making changes to the scheme, the sequence of assignment of sequence numbers can be changed.

5.3.11 The positional designations are affixed in the scheme next to the hugo elements and (or) devices on the right side or above them.

It is allowed to be positioned in the horn rectangle.

5.3.12 On the product scheme, which includes devices that do not have independent schematic diagrams, it is allowed to assign items to the elements within each device.

If the product includes several identical devices, then the positional designations should be assigned to the elements within these devices.

The sequence numbers elements should be assigned according to the rules set in 5.3.9.

Elements that are not included in the device, the positional notation is assigned, starting from the unit, according to the rules set in 5.3.8-5.3.10.

5.3.13 On the product scheme, which includes functional groups, the positional designations are assigned by the rules established in 5.3.8-5.3.10, while first assigning the positional designations to the elements that are not included in the functional groups, and then elements incoming in functional groups.

In the presence of several identical functional groups, the positional designations of the elements assigned to one of these groups should be repeated in all subsequent groups.

The designation of the functional group assigned in accordance with GOST 2.710 is indicated near the image of the functional group (from above or right).

5.3.14 As an image on the element or device diagram, the positional designation of the element or device is affixed near each composite part (see Figure 5).

Combined way image device	Designed way image device

Figure 5.

If the scheme field is divided into zones or circuit, it is made in a lower case method, then to the right of the positional designation or under the positional designation of each composite part of the element or device is allowed to be specified in the probes of the zones or rows numbers in which all other components of this element or device are depicted (cm . Figure 6).

Figure 6.

It is allowed when an image of each component of an element or device is described on the element or device diagram of each component of the element or device, but with an indication of the conclusions (contacts) for each part of the conclusions (contacts).

5.3.15 In the image of individual elements of devices in different places, the positional designation of the device should be included in the composition of the positional designations of these elements, for example \u003d A3-C5 - C5 condenser included in the A3 device.

5.3.16 With a separated method of an image of a functional group (if necessary and combined method), the positional group should be included in the positional designation of the elements included in this group, for example, T1-C5 - C5 condenser included in the T1 functional group.

5.3.17 With a single-line image of about one HTO, replacing several hugo elements or devices, indicate the positional notation of all these elements or devices.

If the same elements or devices are not in all circuits depicted one-centers, then to the right of the positional notation or under it in square brackets indicate the designations of the chains in which these elements or devices are located (see Figure 3).

5.3.18 On the basis of the Schematic diagram, all the elements and devices included in the product and shown in the diagram should be unambiguously defined.

Data on items should be recorded in the list of elements, designed as a table according to GOST 2.701. In this case, the connection of the list with hugo elements should be carried out through the positional notation.

For electronic documents, the list of elements is issued by a separate document.

When you turn on the elements of the circuit in ECI (GOST 2.053), the list of elements decorated according to GOST 2.701 is recommended to receive from it in the form of a report.

It is allowed in some cases established by standards, all the information about the elements is placed near the Hugo.

5.3.19 With a difficult entry, for example, when a device that does not have an independent concept is one or more devices that have independent scores, and (or) functional groups, or if one or more devices are included in the function group, etc. D., then in the list of elements in the column "name" before the name of devices that do not have independent schematic diagrams and functional groups are allowed to be lifted by ordinal numbers (i.e., like the designation of sections, subsections, etc.) within the entire product scheme (see Figure 7). Functional nodes or devices (including those performed on a separate board) are isolated by dashing lines. If a positional designation of the device or the designation of the function group is enabled on the diagram to a positional designation of the element, then in the list of items in the column "pos." Designation "indicate the positional designation of the element without the positional designation of the device or the designation of the functional group.

Figure 7.

5.3.20 When specifying the coo ratings of resistors and capacitors (see Figure 8), it is allowed to use a simplified method of designation of units of values:

- For resistors:

from 0 to 999 ohms - without specifying units,

from 1 · 10 to 999 · 10 ohms - in kiloma with the designation unit of the values \u200b\u200bof the lowercase letter K,

from 1 · 10 to 999 · 10 ohms - in megaoms with the designation of a unit of quantities of the capital letter M,

over 1 · 10 Ohms - in gigamas with the designation unit of the values \u200b\u200bof the capital letter G;

- for capacitors:

from 0 to 9999 · 12 f * - in picoparades without specifying a unit of quantities,
________________
* The text of the document corresponds to the original. - Note database manufacturer.


from 1 · 10 to 9999 · 10 Ф - in micropraids with the designation of a unit of the values \u200b\u200bof the LC MK.

Figure 8.

5.3.21 The diagram should indicate the designations of outputs (contacts) of elements (devices) applied to the product or installed in their documentation.

If in the design of the element (device) and in its documentation, the conclusions (contacts) are not specified, then it is allowed to conditionally assign them the designations in the diagram, repeating them later in the relevant design documents.

With the conditional assignment of the designations of the outputs (contacts) on the schema field, the corresponding explanation is placed.

When an image of several identical elements (devices) of the conclusions (contacts), it is allowed to be indicated on one of them.

With a separated method of an image of the same elements (devices) of the conclusions (contacts), indicate each component of the element (device).

To distingvia on the indication scheme of the conclusions (contacts) from other designations (chain designations, etc.), it is allowed to record the designations of the conclusions (contacts) with a qualifying symbol in accordance with the requirements of GOST 2.710.

5.3.22 When an element or device is image, an explanatory inscription is placed around one component of the product or on the diagram field near the image of the element or device performed by the combined method.

5.3.23 The scheme is recommended to indicate the characteristics of the input and output chains of the product (frequency, voltage, current strength, resistance, inductance, etc.), as well as the parameters to be measured on control contacts, nests, etc.

If you cannot specify the characteristics or parameters of the input and output chains of the product, it is recommended to indicate the name of the chains or controlled values.

5.3.24 If the product is obviously designed for operation only in a specific product (installation), then the diagram allows you to specify the addresses of external connections of the input and output chains of this product. The address must provide unambiguous attachment, for example, if the output contact of the product must be connected to the fifth pin of the third device connector, the address must be recorded as follows: \u003d 3: 5.

It is allowed to specify the address in general, if the connection is provided, for example "device A".

5.3.25 Characteristics of the input and output chains of the product, as well as the addresses of their external connections, it is recommended to record in the tables placed in return in return of the input and output elements - connectors, boards, etc. (see Figure 9).

Figure 9.

Above the table is allowed to indicate the contact of the contact - socket or pin.

Tables are allowed to be executed by the method.

The order of the contacts in the table is determined by the convenience of constructing the scheme.

It is allowed to place tables with chain characteristics if there is an input and output elements in the coherent diagram - connectors, boards, etc. (see Figure 10).

Figure 10.

Similar tables are recommended to be placed on the lines depicting input and output chains and not ending with connector, boards, etc. In this case, the positional designations are not assigned to the tables.

Notes

1 If there are a multiple tables, the table is allowed to bring the table only in one of them.

2 In the absence of characteristics of input and output circuits or addresses of their external connection, the table does not lead graphs with these data.

If necessary, additional graphs are allowed into the table.

3 is allowed to be stailed in the column "CONT" Several serial contact numbers in case they are interconnected. Contact numbers separate comma from each other.

5.3.26 In the image in the multi-contact connector circuits, it is allowed to apply HTOs that do not show individual contacts (GOST 2.755).

Connecting contact connection information indicate in one of the following ways:

- near the image of the connectors, on the free field of the circuit or on the subsequent sheets of the circuit, the tables are placed in which the address of the connection is indicated [Chain designation (see Figure 11 but) and (or) the positional designation of the elements attached to this contact (see Figure 11 b.)].

but - Table placed on a free field of diagram or on subsequent scheme sheets	b. - Table placed near the Connector Image

Figure 11.

If necessary, the table indicates the characteristics of the chains and addresses of external connections (see Figure 11 but).

If the tables are placed on the field of the circuit or on the subsequent sheets, they are assigned the positional designations of the connectors to which they are composed.



in the column "Cont." - Connector contact number. Contact numbers are recorded in ascending order,

in the column "Address" - the designation of the chain and (or) the positional designation of the elements connected to the contacts,

in the chain column, the chain characteristic,

in the column "External address" - the address of the external connection;

- Connections with connector contacts are depicted with a separated method (see Figure 12).

Figure 12.

Notes

1 points connected by a dowline with a connector indicate connections with the corresponding contacts of this connector.

2 If necessary, the chart characteristics are placed on the free field of the scheme over the continuation of the interconnection lines.

5.3.27 When an image in the element scheme, the parameters of which are selected during adjustment, near the positional designations of these elements on the diagram and in the list of elements are stars (for example *), and the footnote is placed on the field: "* Pick when adjusting."

The list should write the elements whose parameters are closest to the calculated one.

Permissible when selecting the limit values \u200b\u200bof the elements parameters indicate in the list in the "Note" column.

If the parameter selected when adjusting is provided with elements of various types, these items are listed in the technical requirements on the schema field, and the following data indicate in the graph of the list:

in the column "name" - the name of the element and the parameter closest to the calculated;

in the graph "Note" - a reference to the appropriate item of technical requirements and permissible when selecting the limit values \u200b\u200bof the parameters.

5.3.28 If a parallel or serial connection is carried out to obtain a certain value of the parameter (container or resistance of a certain value), then in the list of elements in the "Notes" column indicate the general (total) element parameter (for example, 151 com).

5.3.29 When the device (or devices) is depicted as a rectangle, it is allowed in a rectangle in return for the hoo input and output elements to place the tables with the characteristics of the input and output circuits (see Figure 13), and outside the rectangle is allowed to place the tables with the addresses of external connections (see . Figure 14).

Figure 13.

Figure 14.

If necessary, additional graphs are allowed into the tables.

Each table is assigned a positional designation of the element, which is placed in return.

In the table, instead of the word "Cont." It is allowed to place the conventional graphic designation of the connector (see Figure 14).

On the product diagram in rectangles, depicting devices, it is allowed to place structural or functional diagrams of devices or to completely or partially repeat their concept schemes.

Elements of these devices in the list of items are not recorded.

If there are several identical devices in the product, the device scheme is recommended to be placed on a free field of the product scheme (and not in a rectangle) with an appropriate inscription, for example, the "A1-A4 block diagram", or at the first entry of such a block, to reveal its scheme, and later Denote the similar blocks with rectangles with the corresponding alphabetic designation.

5.3.30 The scheme field is allowed to place indications of brands, sections and colors of wires and cables (stranded wires, electrical cords), which must be made of elements, as well as indications of specific electrical installation requirements of this product.

5.4 Rules for performing connection schemes

5.4.1 On the compound scheme, all devices and elements included in the product, their input and output elements (connectors, boards, clamps, etc.), as well as connections between these devices and elements.

5.4.2 Devices and items in the diagram are depicting:

- devices - in the form of rectangles or simplified external outlines;

- Elements - in the form of hugo, rectangles or simplified external outlines.

When the elements are depicted in the form of rectangles or simplified external outlines, it is allowed inside them to place hugo elements.

Input and output elements are depicted in the form of hugo.

Input and output elements are allowed to depict according to the rules set to 5.3.25, 5.3.26 and 5.3.29.

5.4.3 The location of the graphic designations of devices and elements in the diagram should approximately correspond to the actual placement of elements and devices in the product.

The location of images of input and output elements or outputs inside graphic designations and devices or elements should roughly correspond to their actual placement in the device or item.

It is allowed in the diagram not to reflect the location of devices and elements in the product, if the scheme is performed on several sheets or placement of devices and elements at the site of operation is unknown.

5.4.4 The elements used in the product are partially allowed to be depicted in the diagram not completely, limited by the image of the only parts used.

5.4.5 The scheme near the graphic designations of devices and elements indicate the positional notation assigned to them on the concept.

Around or inside the graphical designation of the device, it is allowed to specify its name, type and (or) designation of the document, on the basis of which the device is applied.

5.4.6 The diagram should indicate the designations of outputs (contacts) of elements (devices), applied to the product or installed in their documentation.

If in the design of the device or element and in its documentation, the designation of the input and output elements (conclusions) are not specified, then it is allowed to conditionally assign them the designations in the diagram, repeating them later in the relevant design documents.

With the conditional assignment of the designations input and output elements (outputs) on the schema field, the corresponding explanation is placed.

As a picture of several identical devices, the conclusions on the diagram are allowed to be indicated on one of them (for example, the cesspillage of electrical pumping devices).

5.4.7 Devices and elements with the same external connections are allowed to depict the diagram with the connection only for one device or item.

5.4.8 Devices with independent connection schemes are allowed to portray on the product circuit without showing the connections of the wires and cores (stranded wires, electrical cords) to the input and output elements.

5.4.9 As an image on the connectors scheme, it is allowed to apply HTOs that do not show individual contacts (GOST 2.755).

In this case, near the connector image, on the schema field or on the subsequent sheets of the circuit, the tables are placed with an indication of the contact connectivity (see Figure 15).

Figure 15.

When placing tables on the field of the circuit or on the subsequent sheets, they are assigned by the positional designations of the connectors, in addition to which they are composed.

It is allowed in the table to enter additional graphs (for example, data of the wire).

If the harness (cable is a stranded wire, the electric cord, the wire group) connects the same connector contacts, then the table is allowed to place around one end of the image of the harness (cable - stranded wire, electric cord, wire groups).

If the contact connection information is provided in the table of connections, then the tables indicating the connection of the contacts in the diagram is allowed not to place.

5.4.10 The scheme of the product inside rectangles or simplified external outlines depicting devices is allowed to portray their structural, functional or conceptual circuits.

5.4.11 In the absence of a product schema, the contents of the compounds are assigned the positional designations of devices, as well as elements that are not included in the conceptual circuits of the components of the product, according to the rules set in 5.3.7-5.3.11, and write them into the list of elements.

5.4.12 On the product connection diagram it is allowed to show external connection products according to the rules set to 5.5.8, 5.5.9.

5.4.13 Wires, wire groups, harnesses and cables (stranded wires, electrical cords) should be shown in the scheme with separate lines. The thickness of the lines depicting wires, harnesses and cables (stranded wires, electrical cords) in the diagrams should be from 0.4 to 1 mm.

To simplify the design of the circuit, it is allowed to twist separate wires or cables (stranded wires, electrical cords), which are in the diagram in one direction, to the total line.

When approaching contacts, each wire and core core (stranded wire, electric cord) are depicted by a separate line.

The lines depicting wires, wire groups, harnesses and cables (stranded wires, electrical cords), not to carry out or turn them near the attachment places, if their image makes it difficult to read the scheme.

In these cases, the scheme near the attachment places (see Figure 16) or in the table on the free field of the circuit (see Figure 17) put information in a volume sufficient to ensure a unambiguous connection.

Figure 16 Figure 17

5.4.14 On the product scheme, which includes multi-contact elements, lines depicting harnesses (cables - stranded wires, electrical cords, wire groups), allowed only before the contour of the graphic designation of the element without showing the connection to the contacts.

Guidelines for connecting wires or cable (stranded wire, electric cord) to contacts in this case, in this case, in one of the following ways:

- Contacts show ends of lines depicting wires or cable veins (stranded wire, electric cord), and indicate their designations. The ends of the lines are directed towards the appropriate harness, cable (stranded wire, electric cord), wire groups (see Figure 18);

- The image of a multi-contact element placed a table with an indication of the connection of the contacts. The table is connected to a linte-tuning with a corresponding harness, a cable (stranded wire, electric cord), a group of wires (see Figure 19).

Figure 18.

Figure 19.

5.4.15 The introductory elements through which the wires pass (a group of wires, harvesters, cables - stranded wires, electrical cords) are depicted in the form of hugo installed in ECCD standards.

Passing insulators, germinovoda, glazes, contacts and holders, sealed in pCBdepicted in the form of the Hugo shown in Figure 20.

but - Line depicting wire (wire group, harness, cable - stranded wire, electric cord)

Figure 20.

5.4.16 The diagram should indicate the designations of introductory elements applied to the product.

If the designations of the introductory elements are not specified in the design of the product, it is allowed to conditionally assign them the designations on the diagram of the compounds, repeating them in the appropriate design documentation. In this case, the necessary explanations are placed on the schema field.

5.4.17 Single-core wires, harnesses, cables (stranded wires, electrical cords) must be indicated by sequence numbers within the product.

Wires, harnesses, cables (stranded wires, electrical cords) should be numbered separately. In this case, the wires included in the harness are numbered within the harness, and the cable veins (stranded wire, electrical cord) - within the cable (stranded wire, electric cord).

Notes

1 It is allowed through the numbering of all wires and cables (stranded wires, electrical cords) within the product.

2 It is allowed through the numbering of individual wires, harnesses and cables (stranded wires, electrical cords) within the product. In this case, the wires included in the harness are numbered within the harness, and the cable veins (stranded wire, electrical cord) - within the cable (stranded wire, electric cord).

3 It is allowed not to denote the harnesses, cables (stranded wires, electrical cords) and separate wires, if the product on which the scheme is making will enter the complex and designations of harness, cables (multicore wires, electric cords) and wires will be assigned within the entire complex.

4 It is allowed to assign the designations of wire groups.

5.4.18 If the concept of electrical circuits are assigned to the electrical chains in accordance with GOST 2.709, then all single-core wires, cable veins (stranded wires, electrical cords) and wiring harnesses are assigned the same designations. At the same time, harnesses and cables (stranded wires, electrical cords) are denoted in accordance with the requirements 5.4.17.

5.4.19 In the diagram with the help of alphanumeric (alphanumeric) designation, it is allowed to determine the functional accessory of the wire, harness or cable (stranded wire, electric cord) to a specific complex, room or functional chain.

The letter (alphanumeric) designation is affixed before the designation of each wire, harness, cable (stranded wire, electric cord), separating it with a sign of the hyphen. In this case, the letter (alphanumeric) designation is included in the designation of each wire, harness and cable (stranded wire, electrical cord).

The design in the designation is allowed not to be stailed if it does not make an ambiguity in reading the scheme.

If all wires, harnesses, cables (stranded wires, electrical cords) shown in the diagram, belong to one complex, room or functional chain, then the letter (alphanumeric) designation is not affixed, and the corresponding explanation is placed on the field.

5.4.20 The number of wires and cable cables (stranded wires, electrical cords) on the diagram is affixed, as a rule, near both ends of images.

The numbers of cables (stranded wires, electrical cords) are lined in circles placed in the breaks of images of cables (stranded wires, electric cords) near the branch locations.

The harness numbers are affixed on the shelves of lines-calls near the branching points of the wires.

Rooms of wire groups are affixed near lines.

Notes

1 With the designation of cables (stranded wires, electrical cords) in accordance with the requirements of 5.4.19, as well as with a large number of cables (stranded wires, electrical cords), which are in the diagram in one direction, the number of cables (stranded wires, electrical cords) is allowed Laying a line without circumference.

2 When an image on the scheme of wires, harnesses and cables (stranded wires, electrical cords), the large length of the number is made through gaps determined by the convenience of using the circuit.

5.4.21 The scheme should indicate:



- For cables (stranded wires, electrical cords) recorded in the specification as a material - a brand, the amount and cross-section lived and, if necessary, the number of occupied lived. The number of employed veins point in a rectangle placed on the right of the denotation of cable data (stranded wire, electric cord);

- for harnesses, cables and wires manufactured separately, is the designation of the main design document.

The diagram contains the characteristics of the input and output circuits of devices and elements or other source data necessary to select specific wires and cables (stranded wires, electrical cords), if, when developing a circuit of the complex, data on wires and cables (stranded wires, electrical cords) cannot be defined.

The characteristics of the input and output chains are recommended to specify in the form of tables (see 5.3.25) placed instead of the conditional graphic designations of the input and output elements.

5.4.22 Data (brand, section, etc.) On wires and cables (multicore wires, electrical cords) indicate near lines depicting wires and cables (stranded wires, electrical cords).

In this case, it is allowed to designate wires and cables (stranded wires, electric cords) without assign.

When specifying data on the wires and cables (stranded wires, electrical cords) as a conventional designation, these designations are decrypted on the schema field.

The same brand, cross section and other data on all or most wires and cables (stranded wires, electrical cords) is allowed to be specified on the schema field.

5.4.23 If the diagram does not specify the location of the attachments (for example, individual contacts in the connectors image are not shown) or finding the locations of the connections of the wires and the cable (stranded wire, electrical cord), then data on wires, harness and cables (stranded wires, Electrical cords) and addresses of their connections are driven into a table called the "Connection Table". The table of connections should be placed on the first sheet of the circuit or perform in the form of an independent document.

The table of compounds placed on the first sheet of the scheme is, as a rule, above the main inscription. The distance between the table and the main inscription must be at least 12 mm.

The continuation of the connections table is placed on the left of the main inscription, repeating the table head.

The table of compounds in the form of an independent document is performed on A4 format. The main inscription and additional graphs to it are performed according to GOST 2.104 (forms 2 and 2a).

5.4.24 The form of the connection table selects the schema developer depending on the information that must be placed in the diagram (see Figure 21).

Figure 21.

In the columctions of the tables indicate the following data:

in the column "Wire designation" - the designation of a single-core wire, cable veins (stranded wire, electric cord) or a harness wire;

in the graphs "where comes", "where comes" - conditional alphanumeric designations of the connected elements or devices;

in the column "Connections" - conditional alphanumeric designations of the connected elements or devices, separating their comma;

in the column "Wire data":

- for a single-core wire - brand, section and, if necessary, coloring in accordance with the document, on the basis of which it is used;

- for cable (stranded wire, electric cord) recorded in the specification as a material - a brand, a cross section and the amount of live in accordance with the document, on the basis of which the cable is used (stranded wire, electric cord);

in the Count "Note" - additional clarifying data.

Notes

2 The columns are allowed to divide into subgraphs.

5.4.25 When filling out the connection table, follow the following order:

- when performing connections with separate wires, the wires are recorded in the order of increasing the numbers assigned to them;

- When performing connections with wires of harness or cable veins (stranded wires, electrical cords) before recording of the wires of each harness or lived each cable (stranded wire, electric cord), the title is placed, for example: "harness 1" or "ABVGHKHXXXXX.032" ; "Cable 3" or "Cable ABBG.HHXXXXX.042"; "Wire 5". Wires of harness or cable veins (stranded wire, electric cord) are recorded in ascending order of numbers assigned to wires or veins;

- When performing connections with separate wires, wiring harnesses and cables (stranded wires, electrical cords), the compound table first recorded separate wires (without title), and then (with the corresponding headers) wiring harnesses and cables (stranded wires, electrical cords).

If insulating tubes, shielding braids, etc. must be attached to the individual wires, then the corresponding instructions are placed in the "Note" column. It is allowed to place these instructions on the schema field.

Note - When applying the compounds scheme, another recording procedure is allowed only if it is installed in industry standards.

5.4.26 On the diagram of the compounds near both the ends of the lines depicting separate wires, the wires of the harnesses and cable veins (stranded wires, electrical cords) is allowed to specify the address of the connections. In this case, the table of compounds do not constitute. Notation Wires Allowed not to assign.

5.4.27 On the field of the scheme over the main inscription, it is allowed to place the necessary technical directions, for example:

- requirements for the inadmissibility of joint laying of some wires, harnesses and cables (stranded wires, electrical cords);

- minimally allowable distances between wires, harness and cables (stranded wires, electric cords); Data on the specificity of laying and protect wires, harnesses and cables (stranded wires, electric cords), etc.

5.5 Connection schemes

5.5.1 A product, its input and output elements (connectors, clamps, etc.) must be depicted on the connection diagram (connectors, clamps, etc.) and the ends of the wires and cables (stranded wires, electrical cords) of the external installation, which is placed on which the connection data is placed Products [characteristics of external circuits and (or) addresses].

5.5.2 The product in the diagram is depicted as a rectangle, and its input and output elements are in the form of hugo.

It is allowed to portray the product in the form of simplified external outlines. Input and output elements are depicted in this case as simplified external outlines.

5.5.3 Placing images of input and output elements inside the graphic designation of the product should approximately correspond to their actual placement in the product.

5.5.4 The diagram should indicate the positional notation of the input and output elements assigned to them on the product schema.

5.5.5 Introductory elements (for example, glazes, germinats, passage insulators, contacts and holders, soldered in a printed circuit board) through which wires or cables (stranded wires, electrical cords, coaxial cables) are depicted in the scheme according to the rules set in 5.4.15.

5.5.6 The scheme should indicate the designations of the input, output or output elements applied to the product.

If the designations of the input, output and output elements in the design of the product are not specified, then it is allowed to conditionally assign them the designations in the diagram, repeating them in the relevant design documentation. In this case, the necessary explanations are placed on the schema field.

5.5.7 In the scheme near the hugo connectors, to which the wires and cables (stranded wires, electrical cords) are attached, it is allowed to indicate the names of these connectors and (or) designations of documents on the basis of which they are applied.

5.5.8 Wires and cables (stranded wires, electrical cords) must be shown in the diagram of individual lines.

5.5.9 If necessary, the scheme indicates brands, sections, colors of wires, as well as the brand of cables (stranded wires, electric cords), quantity, section and employment.

When specifying stamps, sections and coloring of wires in the form of conventional designations on the schema field decrypt these designations.

5.6 Terms of implementation of general schemes

5.6.1 The general diagram depicts devices and elements included in the complex, as well as wires, harnesses and cables (stranded wires, electrical cords) connecting these devices and elements.

5.6.2 Devices and elements on the diagram are depicted in the form of rectangles. Elements are allowed to depict in the form of hugo or simplified external outlines, and devices in the form of simplified external outlines.

The arrangement of the graphic designations of devices and elements in the diagram should roughly correspond to the actual placement of elements and devices in the product.

It is allowed in the diagram not to reflect the location of devices and elements in the product, if the placement of them at the place of operation is unknown.

In these cases, graphic designations of devices and elements should be located so that the simplicity and visibility of the electrical connections are provided between them.

5.6.3 On the graphic designations of devices and elements, the input, output and introductory elements are depicted according to the rules set in 5.4.9, 5.4.15.

The location of the hug of the input, output and introductory elements inside images of devices and elements should roughly correspond to their valid placement in the product. If, to ensure the visibility of the compounds of compounds, the location of the graphic designations of these elements does not correspond to their actual placement in the product, the corresponding explanation must be placed on the field field.

5.6.4 The scheme should indicate:

- for each device or element depicted in the form of a rectangle or simplified external outlines - their name and type and (or) designation of the document on the basis of which they are applied;

- For each element depicted in the form of hug, its type and (or) designation of the document.

5.6.5 Devices and elements grouped into posts and (or) premises are recommended to be recorded in the list of posts and (or) premises.

5.6.6 The diagram should indicate the designations of input, output and introductory elements applied to the product.

If the designations of the input, output and introductory elements in the design of the product are not specified, then it is allowed to conditionally assign the designations in the diagram by repeating them in the relevant design documentation. In this case, the necessary explanations are placed on the schema field.

5.6.7 The diagram is allowed to indicate the designations of connector documents on the shelves of lines-calls, as well as the number of connector contacts, using their next hug (see Figure 22).

Figure 22.

5.6.8 Wires, harnesses and cables (stranded wires, electrical cords) should be shown in the diagram with individual lines and are designated separately by sequence numbers within the product.

It is allowed through the numbering of wires, harnesses and cables (stranded wires, electric cords) within the product, if the wires included in the harnesses are numbered within each harness.

If the concept of electrical circuits are assigned to the concepts in accordance with GOST 2.709, then all single-core wires, cable veins (stranded wires, electrical cords) and wiring harnesses are assigned the same designations.

5.6.9. If the product on which the scheme is developed, several complexes are included, the single-core wires, cables (stranded wires, electrical cords) and harnesses should be numbered within each complex.

The belonging of a single-core wire, a harness, cable (stranded wire, electric cord) to a specific complex is determined using the letter (alphanumeric) notation, which is supplied to the number of each single-core wire, harness and cable (stranded wire, electric cord) and the DIFIS selected.

5.6.10 is allowed in the diagram using the letter (alphanumeric) designation to identify the belonging of the wire, harness or cable (stranded wire, electrical cord) to certain rooms or functional circuits according to the rules set in 5.4.19.

5.6.11 The number of single-core wires in the diagram are affixed near the ends of the images; The numbers of single-core short wires that are clearly visible in the diagram are allowed to be placed near the middle of the images.

5.6.12 The numbers of cables (stranded wires, electrical cords) are lined in circles placed in cable breaks (stranded wires, electrical cords).

Note - with the designation of cables (stranded wires, electrical cords) in accordance with the requirements of 5.6.9, 5.6.10 notation in the circle does not fit.

5.6.13 The number of the harnesses are affixed on the shelves of lines.

5.6.14 The diagram near the image of single-core wires, harnesses and cables (stranded wires, electrical cords) indicate the following data:

- for single-core wires - brand, section and, if necessary, color;

- for cables (stranded wires, electrical cords) recorded in the specification as a material - a brand, the amount and section of the veins;

- For wires, cables and harnesses made according to the drawings, the designation of the main design document.

If, when developing a circuit, data on wires and cables (stranded wires, electrical cords), paved during installation, cannot be defined, then the scheme leads the corresponding explanations indicating the source data necessary to select specific wires and cables (stranded wires, electric cords ).

With a large number of connections, the specified information is recommended to record a list of wires, harnesses and cables (stranded wires, electrical cords).

5.6.15 The list of wires, harnesses and cables (stranded wires, electrical cords) (see Figure 23) are placed on the first sheet of the scheme, as a rule, above the main inscription or are performed as follow-up.

Figure 23.

In the graph of the list indicate the following data:

in the graph "Designation" - the designation of the main design document of the wire, cable (stranded wire, electrical cord), harness made according to drawings;

in the column "Note" - cables (stranded wires, electric cords) supplied with a complex or paved when installing it.

Cables (stranded wires, electric cords) deployed during installation, allowed in a list of not to enter.

5.6.16 A common scheme, if possible, should be performed on one sheet. If the scheme due to the complexity of the product can not be performed on one sheet, then:

- on the first sheet, draw the product as a whole, depicting posts and (or) premises with the conditional outlines and showing the relationship between posts and (or) premises;

- inside the conditional outlines of posts and (or) premises are only those devices and elements to which the wires and cables (stranded wires, electrical cords), connecting posts and (or) rooms, are submitted;

- on other sheets fully draw the schemes of individual posts and (or) premises or groups of posts and (or) premises;

- The general scheme of each complex is performed on a separate sheet, if several complexes are included in the product.

5.7 Rules for performing location schemes

5.7.1 The location scheme depict the components of the product, and if necessary, the connection between them is a design, room or terrain on which these components will be located.

5.7.2 The components of the product are depicted in the form of simplified external outlines or conditional graphic designations.

5.7.3 Wires, wire groups, harnesses and cables (stranded wires, electrical cords) are depicted as separate lines or simplified external outlines.

5.7.4 The location of the graphic designations of the component parts of the product in the diagram should approximately correspond to the actual placement in the design, room, on the ground.

5.7.5 When performing the location scheme, it is allowed to use various methods of constructing (axonometry, plan, conditional scan, construct cut, etc.).

5.7.6 The scheme should indicate:

- for each device or element depicted in the form of a simplified external outline - their name and type and (or) designation of the document on the basis of which they are applied;

- For each element depicted in the form of a conditional graphic notation, its type and (or) designation of the document.

With a large number of devices and items, it is recommended to record this information into the list of items.

In this case, near the graphic designations of devices and elements affix the positional notation.



Electronic document text
prepared Codex JSC and drilled by:
official edition
M.: Standinform, 2011