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General performance requirements. Species and types

GOST 2.701-2008

Group T52

INTERSTATE STANDARD

one system design documentation

Types and types. General requirements to fulfillment

Unified system for design documentation. Diagrams. Kinds and types. General requirements for fulfillment

ISS 01.100
OKSTU 0002

Introduction date 2009-07-01

Foreword

The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-92 "Interstate standardization system. Basic provisions" and GOST 1.2-97 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. The procedure for developing, adopting, application, renewal and cancellation

About the standard

1 DEVELOPED by the Federal State unitary enterprise All-Russian Research Institute for Standardization and Certification in Mechanical Engineering (VNIINMASH), Autonomous non-profit organization Research Center for CALS Technologies "Applied Logistics" (ANO R&D Center for 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 (minutes N 34 of October 7, 2008)

Voted to accept:


Short name of the country according to MK (ISO 3166) 004-97		Abbreviated name of the national standards body
Azerbaijan		Azstandard
		Ministry of Trade and Economic Development
Belarus		State Standard of the Republic of Belarus
Kazakhstan		State Standard of the Republic of Kazakhstan
Kyrgyzstan		Kyrgyzstandart
		Moldova-Standard
Russian Federation		federal agency for technical regulation and metrology
Tajikistan		Tajikstandart
Turkmenistan		Main State Service "Turkmenstandartlary"
		Gospotrebstandart of Ukraine

4 By order of the Federal Agency for Technical Regulation and Metrology of December 25, 2008 N 702-st, the interstate standard GOST 2.701-2008 was put into effect as a national standard Russian Federation from July 1, 2009

5 INSTEAD OF GOST 2.701-84

Information on the entry into force (termination) of this standard is published in the index "National Standards".

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

THE AMENDMENT IS MADE, published in IUS N 2, 2012

Amended by database manufacturer

1 area of use

This standard applies to diagrams made in paper and electronic forms, products of all industries, as well as on electrical circuits power facilities (power stations, electrical equipment industrial enterprises etc.), establishes the types, types of schemes and general requirements for their implementation.

On the basis of this standard, it is allowed, if necessary, to develop standards that establish the types, types, completeness and requirements for the implementation of schemes for products specific types technology according to their specifics.

2 Normative references

This standard uses references to the following interstate standards:

GOST 2.004-88 Unified system for design documentation. General requirements for the implementation of design and technological documents on printing and graphic output devices of a computer

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

GOST 2.104-2006 Unified system for design documentation. Basic inscriptions

GOST 2.201-80 Unified system for design documentation. Product designation and design documents

GOST 2.301-68 Unified system for design documentation. Formats

3 Terms and definitions

In this standard, the following terms are used with their respective definitions:

3.1 diagram view: Classification grouping of circuits, distinguished by the features of the principle of operation, the composition of the product and the links between its components.

3.2 schema type: Classification grouping, allocated on the basis of their main purpose.

3.3 interconnection line: A line segment that indicates the presence of a connection between the functional parts of the product.

3.4 functional part: Element, device, functional group.

3.5 schema element: The part of the circuit that performs certain function in the product (installation) and cannot be divided into parts that have an independent purpose and their own conventions.
________________
Here and below, the "*" sign marks the points to which explanations are given in Appendix A.

3.6 device: A set of elements representing a single structure*.

3.7 functional group: A set of elements that perform a specific function in a product and are not combined into a single design.

3.8 functional chain: A set of elements, functional groups and devices (or a set of functional parts) with interconnection lines that form a channel or path for a specific purpose*.

3.9 installation: Conditional name of the facility in power facilities for which the scheme is issued.

4 Types and types of circuits

4.1 Scheme is a document that shows in the form of conventional images or symbols the components of the product and the relationship between them.

4.2 Types of schemes, depending on the types of elements and connections that make up the product (installation), and their codes are presented in table 1.

Table 1


Diagram view	Definition	Diagram view code
Electric scheme
Hydraulic scheme
Scheme pneumatic
Gas circuit (except pneumatic circuit)
Kinematic scheme
Scheme vacuum
Optical scheme
Energy scheme
division scheme
Combined scheme
Notes 1 For a product that contains elements different types, develop several diagrams of the corresponding types of the same type, for example, an electrical circuit diagram and a hydraulic circuit diagram, or one combined diagram containing elements and connections of different types. 2 On a diagram of one type, it is allowed to depict elements of diagrams of another type that directly affect the operation of a diagram of this type, as well as elements and devices that are not included in the product (installation) on which (which) the diagram is made, but necessary to explain the principles of operation of the product ( settings). Conditional graphic symbols (UGO) of such elements and devices, as well as their interconnection lines, are performed on the diagram with dash-dotted lines equal in thickness to the interconnection lines (see Figures 1 and 2). 3 The scheme for dividing the product into its component parts (division scheme) is issued to determine the composition of the product.

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

table 2


Circuit Type	Definition	Schema type code
Structural diagram	A document that defines the main functional parts of the product, their purpose and relationships
Functional diagram	A document explaining the processes occurring in individual functional chains of a product (installation) or a product (installation) as a whole
Schematic diagram (full)	Document defining full squad elements and the relationship between them and, as a rule, giving a complete (detailed) understanding of the principles of operation of the product (installation)
Connection diagram (mounting)	Document showing connections constituent parts products (installations) and defining wires, bundles, cables or pipelines that make these connections, as well as the places of their connection and input (connectors, boards, clamps, etc.)
Wiring diagram	Document showing the external connections of the product
General scheme	A document defining the components of the complex and connecting them to each other at the place of operation
Layout plan	A document that determines the relative location of the component parts of the product (installation), and, if necessary, also bundles (wires, cables), pipelines, light guides, etc.
Combined scheme
Note - The names of the types of circuits indicated in brackets are set for electrical circuits of power facilities.

4.4 The name and code of the scheme is determined by their type and type.

The name of a combined scheme is determined by a combination of types of schemes of the same type.

The name of the combined scheme is determined by a combination of types of schemes of the same type.

The circuit code must consist of an alphabetic part that defines the type of circuit (see Table 1) and a digital part that defines the type of circuit (see Table 2): for example, electrical circuit diagram - E3; hydraulic connection diagram - G4; structural division scheme - E1; electrohydraulic circuit diagram - C3; electrohydropneumokinematic schematic diagram - С3; electrical connection and connection diagram - E0; hydraulic structural diagram, principal and connections - Г0.

Notes

1 It is allowed to develop combined circuits, when information specific to a circuit of another type is placed on circuits of one type, for example, on the circuit diagram of a product (installation), its external connections are shown.

When performing combined schemes, the rules established for schemes of the corresponding types must be observed.

The nomenclature, names and codes of combined schemes should be established in the standards of the organization.

2 If, due to the characteristics of the product (installation), the amount of information necessary for its development (design), adjustment, control, operation and repair cannot be transferred in the documentation set in diagrams of established types and types, then it is allowed to develop diagrams of other types and types.

The nomenclature, names and codes of other schemes should be established in the standards of the organization.

3 On a product (installation), it is allowed to carry out a diagram of a certain type and type on several sheets, or instead of one diagram of a certain type and type, to perform a set of diagrams of the same type and type. In addition, each scheme must be drawn up as an independent document.

When a product (installation) is issued with several circuits of a certain type and type in the form of independent documents, it is allowed to indicate the name of the functional circuit or functional group in the name of the circuit (for example, electrical circuit diagram of the drive, electrical circuit diagram of power supply circuits; hydraulic circuit diagram of the drive, hydraulic circuit diagram lubrication, hydraulic circuit cooling circuit).

In this case, each scheme is assigned a designation according to GOST 2.201, as an independent design document and, starting from the second scheme, a dot is added to the scheme code in the designation Arabic numerals serial numbers (for example, ABCD.XXXXXXX.XXXE3, ABCD.XXXXXXX.XXXE3.1; ABCD.XXXXXXX.XXXXG3, ABCD.XXXXXXX.XXXG3.1, ABCD.XXXXXX.XXXXY3.2).

4.5 To schemes or instead of schemes in cases, established rules implementation of specific types of schemes, they issue tables in the form of independent documents containing information about the location of devices, connections, connection points 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 of the connection table for the electrical wiring diagram is TE4.

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

Connection tables are written in the specification after the schemes for which they are issued, or instead of them.

5 General performance requirements

5.1 Set (nomenclature) of schemes

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

The number of types of diagrams per product (installation) should be minimal, but in aggregate they must contain information in an amount sufficient for the design, manufacture, operation and repair of the product (installation).

5.1.2 An unambiguous relationship must be established between the diagrams of one set of design documents for a product (installation), which would provide the ability to quickly find the same elements (devices, functional groups), relationships or connections in all diagrams of this set.

5.2 Formats

5.2.1 The formats of the diagram sheets are selected in accordance with the requirements established in GOST 2.301 and GOST 2.004, with the main formats being preferred.

When choosing formats, consider:

- the volume and complexity of the designed product (installation);

- the required degree of detail of the data, due to the purpose of the scheme;

- conditions of storage and circulation of schemes;

- features and capabilities of the technique for performing, reproducing and (or) microfilming schemes;

- the possibility of processing schemes by means of computer technology.

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

5.3 Building the circuit

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

5.3.2 Graphical symbols (UGO) of elements, devices, functional groups and interconnection lines connecting them should be placed on the diagram in such a way as to ensure best performance about the structure of the product and the interaction of its components.

Notes

1 It is allowed to place UGOs on the diagram in the same order in which they are located in the product, provided that this does not impair the readability of the diagram.

2 If the product has several identical elements (devices, functional groups) connected in parallel, it is allowed to depict only one branch instead of depicting all branches of a parallel connection, indicating the number of branches using the branch designation. Near the UGO, depicted in one branch, their designations are affixed. In this case, all elements, devices or functional groups included in this parallel connection must be taken into account (see Figure 1).

Picture 1

The elements in this case are written to the list of elements in one line.

3 If the product has three or more identical elements (devices, functional groups) connected in series, it is allowed to depict only the first and last elements (devices, functional groups) instead of depicting all serially connected elements (devices, functional groups), showing the connections between them dashed lines.

When assigning designations to elements (devices, functional groups), elements (devices, functional groups) that are not shown in the diagram (see Figure 2) should be taken into account. In this case, the total number of identical elements is indicated above the dashed line. The elements in this case are written to the list of elements in one line.

Figure 2

4 Schemes are allowed to be performed within the conditional contour, which simply depicts the design of the product. In these cases, conditional contours are performed by lines equal in thickness to the interconnection lines. It is allowed to carry out the contour of the product with thinner lines.

5.3.3 When executing a diagram on several sheets or as a set of diagrams of the same type, it is recommended:

- for diagrams intended to explain the principles of operation of the product (functional, principal), depict on each sheet or on each diagram a certain functional group, functional circuit (line, path, etc.);

- for diagrams intended for determining connections (connection diagram), depict on each sheet or on each diagram a part of the product (installation) located in certain place space or a certain functional chain.

Schemes executed in electronic form are recommended to be single-sheeted, ensuring that this sheet is divided into the required formats when printed.

5.3.4 The distance (clearance) between two adjacent UGO lines must be at least 1.0 mm.

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

5.3.5 Devices that have an independent circuit diagram are performed on the diagrams in the form of a figure with a solid line, equal in thickness to the interconnection lines.

Note - It is allowed to make devices in the form of a figure with a line twice as thick as the interconnection line.

5.3.6 A functional group or a device that does not have an independent circuit diagram is performed on the diagrams in the form of a figure of contour dash-dotted lines equal in thickness to the interconnection lines.

Note to 5.3.5, 5.3.6 - The figure outlined by the contour line, as a rule, should be a rectangle. It is allowed to highlight parts of the scheme with non-rectangular shapes.

5.3.7 When designing a product that includes several different devices, for each device it is recommended to carry out an independent circuit diagram.

For devices that can be used in other products (installations) or independently, independent circuit diagrams should be made.

5.3.8 When drawing up diagrams of a product (installation), which includes devices that have independent circuit diagrams, each such device is considered as an element of the product diagram and is depicted in the form of a rectangle or UGO, it is assigned a reference 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 circuit diagrams or functional groups, then it is allowed not to repeat the diagrams of these devices or functional groups on the product (installation) diagram. In this case, the device or functional group is depicted as a rectangle, and the diagram of such a device or functional group is depicted inside one of the rectangles (larger) or placed on the field of the diagram with the appropriate inscription, for example: "Scheme of the block ABCD.ХХХХХ.ХХХ".

2 When performing a circuit diagram on several sheets, the following requirements must be met:

- when assigning reference designations to elements, continuous numbering is observed within the product (installation);

- the list of elements should be general;

- individual elements can be re-drawn on other sheets of the diagram, keeping the reference designations assigned to them on one of the sheets of the diagram.

3 When developing several independent circuit diagrams for one product, the following requirements should be met:

- positional designations are assigned to elements according to the rules established in note 2;

- in each scheme, there should be a list of only those elements that have reference designations assigned on this scheme;

- individual elements can be re-drawn on several diagrams, keeping the reference designations assigned to them on one of the diagrams.

In this case, instructions are placed on the diagrams according to the type: "Elements shown in the diagram and not included in the list of elements, see ABVG.XXXXXX.XXXG3" or "Hydraulic valves K1 and K5, see ABVG.XXXXXX.XXXG3".

5.4 Graphic symbols

5.4.1 When performing schemes, the following graphic symbols are used:

- UGO, established in the standards of the Unified System for Design Documentation, as well as built on their basis;

- rectangles;

- simplified external outlines (including axonometric ones).

If necessary, non-standardized UGOs are used.

When using non-standardized UGO and simplified external outlines, appropriate explanations are given in the diagram.

UGO, for which several acceptable (alternative) embodiments have been established, differing in geometric shape or degree of detail, should be applied based on the type and type of the developed scheme, depending on the information that needs to be conveyed on the scheme by graphic means. In this case, on all diagrams of the same type included in the documentation set, one selected designation option must be used.

The use of certain UGOs on the circuits is determined by the rules for the implementation of circuits of a certain type and type.

5.4.2 UGO elements are depicted in the dimensions established in the relevant standards of the Unified System for Design Documentation for UGO. UGO, the ratios of the dimensions of which are given in the relevant standards on a modular grid, should be depicted on the diagrams in sizes determined vertically and horizontally by the number of steps of the modular grid M (see Figure 3). In this case, the step of the modular grid for each scheme can be any, but the same for all elements and devices of this scheme.

Figure 3

UGO elements, the dimensions of which are not established in these standards, should be depicted in the diagram in the dimensions in which they are made in the relevant standards for UGO.

The dimensions of the UGO, as well as the thickness of their lines, must be the same on all diagrams for a given product (installation).

Notes

1 All dimensions of the UGO are allowed to be proportionally changed.

2 UGO elements used as components of the designations of other elements (devices) may be depicted as reduced in comparison with other elements (for example, a resistor in a rhombic antenna, valves in a dividing panel).

5.4.3 UGO on the diagrams should be made with lines of the same thickness as the interconnection lines.

5.4.4 UGO elements are depicted in the diagram in the position in which they are given in the relevant standards, or rotated through an angle that is a multiple of 90 °, if there are no special instructions in the relevant standards. It is allowed to rotate the UGO by an angle that is a multiple of 45 °, or depict it as mirrored.

If the meaning or readability of the designation may be violated when rotating or mirroring the UGO, then such designations should be depicted in the position in which they are given in the relevant standards.

UGOs containing numeric or alphanumeric designations are allowed to be rotated counterclockwise only through an angle of 90 ° or 45 °.

5.5 Relationship lines

5.5.1 The interconnection lines are made with a thickness of 0.2 to 1.0 mm, depending on the formats of the circuit and the dimensions of the UGO. The recommended line thickness is from 0.3 to 0.4 mm.

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

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

5.5.3 Relationship lines passing from one sheet or one document to another should be cut off outside the diagram image without arrows.

Next to the break in the interconnection line, the designation or name assigned to this line (for example, wire number, pipeline number, signal name or its abbreviated designation, etc.) should be indicated, and in parentheses the sheet number of the diagram and zone, if any, if executing the scheme on several sheets, for example, sheet 5, zone A6 (5, A6), or the designation of the document when executing schemes with independent documents, to which the interconnection line passes.

5.5.4 Relationship lines should normally be shown in full.

Note - Relationship lines within one sheet, if they make it difficult to read the diagram, can be cut off. Interconnection line breaks end with arrows. Near the arrows indicate the places for designating interrupted lines, for example, connections, and (or) the necessary characteristics of the circuits, for example, polarity, potential, pressure, fluid flow, etc.

5.5.5 Elements (devices, functional groups) included in the product and depicted in the diagram must be labeled in accordance with the standards for the rules for the implementation of specific types of circuits.

Designations can be alphabetic, alphanumeric and numeric.

Note - The designations of elements (devices, functional groups) specific to certain branches of technology should be established by the standards of the organization.

5.6 Text information

5.6.1 It is allowed to place various technical data on the diagrams, the nature of which is determined by the purpose of the diagram. Such information indicates either near the UGO (if possible on the right or above), or in the free field of the diagram. For example, the nominal values \u200b\u200bof their parameters are placed near the UGO elements and devices, and diagrams, tables, text instructions (diagrams of the sequence of time processes, cyclograms, contact closure tables of switching devices, instructions on specific installation requirements, etc.) .).

5.6.2 Text data is given in the diagram in cases where the information contained in them is inappropriate or impossible to express graphically or in the form of UGO.

The content of the text should be short and precise. In the inscriptions on the diagrams, abbreviations of words should not be used, with the exception of those generally accepted or established in the standards.

Text data, depending on their content and purpose, can be located:

- next to UGO;

- inside UGO;

- over the lines of interconnection;

- in a break in the lines of interconnection;

- near the ends of interconnection lines;

- on the free field of the scheme.

5.6.3 Text data relating to lines is oriented parallel to the horizontal sections of the corresponding lines.

With a high schema density, vertical data orientation is allowed.

5.6.4 On the diagram, near the UGO elements that require explanation under operating conditions (for example, switches, potentiometers, regulators, etc.), appropriate inscriptions, signs or graphic symbols are placed.

Inscriptions, signs or UGOs intended for application to the product are enclosed in quotation marks in the diagram.

If an inscription in quotation marks is to be applied to the product, then appropriate instructions are given in the field of the diagram.

5.6.5 It is allowed to place the necessary technical instructions above the main inscription, for example, the requirements for the inadmissibility of joint laying of some wires, bundles, cables, pipelines, the minimum allowable dimensions between wires, bundles, bundles and cables, pipelines, data on the specificity of laying and protection of wires, bundles , cables and pipelines, etc.

When executing a diagram on several sheets, technical instructions that are common to the entire diagram should be placed in the free field (if possible above the main inscription) of the first sheet of the diagram, and technical instructions relating to individual elements should be placed either in close proximity to the image of the element, or on the free field of the sheet where they are most necessary for the convenience of reading the diagram.

5.7 List of elements

5.7.1 The list of elements is placed on the first sheet of the diagram or performed as a separate 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 the electronic structure of the product in accordance with GOST 2.053, it is recommended to obtain a list of elements from it in the form of a report drawn up in accordance with the requirements of this standard.

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

Figure 4

The columns of the table indicate the following data:

in the column "Pos. designation" - position 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, interstate standard, standard of the Russian Federation, standard of the organization, specifications); - for a functional group - name;

in the column "Note" - it is recommended to indicate the technical data of the element (device) that are not contained in its name.

5.7.3 When performing a list of elements on the first sheet of the diagram, it is usually placed above the main inscription.

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

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

5.7.4 When issuing a list of elements in the form of an independent document, its code must consist of the letter "P" and the code of the scheme for which the list is issued, for example, the code of the list of elements for a hydraulic circuit diagram - PGZ. In this case, in the main inscription (column 1) indicate the name of the product, as well as the name of the document "List of elements".

The list of elements is written in the specification after the scheme to which it is issued.

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

5.7.5 When dividing the circuit field into zones, the list of elements is supplemented with the "Zone" column (see Figure 5), indicating in it the designation of the zone in which this element (device) is located.

Figure 5

Notes

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

2 At the stages of the technical proposal, draft and technical projects information about the elements placed on the diagram may be incomplete.

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

5.7.6 Elements in the list are written in groups in alphabetical order of letter designators.

Within each group having the same letter reference designations, the elements are arranged in ascending order of serial numbers.

When performing digital designations on the diagram, they are recorded in the list in ascending order.

Notes

1 To facilitate the introduction of changes, it is allowed to leave several blank lines between separate groups of elements, and with a large number of elements within groups, between elements.

2 Elements of the same type with the same parameters, having sequential serial numbers on the diagram, can be written in the list in one line. In this case, only positional designations with the smallest and largest serial numbers are entered in the column "Pos. designation", for example: R3, R4, C8-C12, and in the column "Col." is the total number of such elements.

3 When recording elements of the same name that differ technical specifications and other data and having the same letter designation, it is allowed to write in the column "Name":

- the name of these elements in the form of a common name;

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

Figure 6

5.7.7 When assigning reference designations to elements within device groups or when the same functional groups are included in the product in the list of elements, the elements related to devices and functional groups are recorded separately.

The entry of the elements included in each device (functional group) begins with the name of the device or functional group, which is written in the "Name" column and underlined. At computer-aided design the name of the device (functional group) may not be underlined.

Below the name of the device (functional group), one free line must be left, above - at least one free line.

Notes

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

2 If there are elements on the product diagram that are not included in the devices (functional groups), then when filling out the list of elements, first write down these elements without a heading, and then devices that do not have independent circuit diagrams, and functional groups with elements included in them.

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

The total number of identical devices (functional groups) is indicated in the column "Number." on the same line as the title.

4 If the product contains elements that are not independent designs, then when writing them into the list, the column "Name" is not filled in, and in the column "Note" an explanatory inscription or a link to an explanatory inscription is placed in the diagram field (see Figure 7).

Figure 7

6 Rules for the implementation of combined schemes

6.1 Elements (devices, functional groups) and relationships of each type (electrical, hydraulic, pneumatic, etc.) are depicted on the diagram according to the rules established for the corresponding types of circuits of this type.

6.2 The information placed on the diagram and the design of the diagram as a whole should be determined according to the rules established for the corresponding types of diagrams of this type.

6.3 Elements of the same type of circuits on the diagram are assigned reference designations that are end-to-end within the circuit. To distinguish between the same spelling, they should be underlined, starting with the elements belonging to the second scheme indicated in the name. These rules must be followed for devices and functional groups.

For example, a hydropneumokinematic schematic diagram - one feature for pneumatic elements (devices, functional groups); two - for kinematic.

7 Rules for the execution of combined schemes

7.1 Elements (devices, functional groups) and relationships in each type of circuit (structural, functional, etc.) are depicted on the diagram according to the rules established for the corresponding types of circuits of this type.

7.2 The information placed on the diagram and the design of the diagram as a whole should be carried out according to the rules established for the corresponding types of diagrams of this type.

7.3 Elements of the same type of circuit in the diagram are assigned reference designations that are end-to-end within the circuit. To distinguish between the same spelling, they should be underlined, starting with elements from the second type scheme indicated in the name. These rules must be followed for devices and functional groups.

For example, a hydraulic structural diagram, a circuit diagram and connections - one line in the block diagram, two - in the circuit diagram and three - in the connection diagram.

Annex A (informative). Explanations to some clauses of this standard for a better understanding of the text

Annex A
(reference)

Item 3.5 Examples of a circuit element are: resistor, relay contact, pipe, pump, coupling, etc.

Clause 3.6 The device may not have a specific functional purpose in the product.

Clause 3.8 Examples of functional chain: audio channel, video channel, microwave path, etc.

Clause 4.3 Structural diagrams are developed when designing products (installations) at stages preceding the development of diagrams of other types, and they are used for general familiarization with the product (installation).

Functional diagrams are used to study the principles of operation of products (installations), as well as during their installation, control and repair.

Schematic diagrams are used to study the principles of operation of products (installations), as well as during their adjustment, control and repair. They serve as the basis for the development of other design documents, such as wiring diagrams (installation) and drawings.

Connection diagrams (installation) are used in the development of other design documents, primarily drawings that determine the laying and methods of fastening wires, bundles, cables or pipelines in a product (installation), as well as for making connections and for monitoring, operating and repairing products ( settings).

Connection diagrams are used in the development of other design documents, as well as for connecting products and during their operation.

General schemes are used when familiarizing with the complexes, as well as during their control and operation. General scheme for assembly unit allowed to be developed if necessary.

Layout schemes are used in the development of other design documents, as well as in the operation and repair of products (installations).

Electronic text of the document
prepared by Kodeks JSC and verified against:
official publication
M.: Standartinform, 2009

Revision of the document, taking into account
changes and additions prepared
JSC "Kodeks"

Unified system of design documentation

SCHEME

Species and types
General performance requirements

Moscow

Standartinform

2009

Foreword

The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-92 “Interstate standardization system. Basic Provisions” and GOST 1.2-97 “Interstate Standardization System. Interstate standards, rules and recommendations for interstate standardization. The order of development, adoption, application, updating and cancellation "

About the standard

1 DEVELOPED by the Federal State Unitary Enterprise All-Russian Research Institute for Standardization and Certification in Mechanical Engineering (VNIINMASH), Autonomous Non-Commercial Organization Research Center CALS -technologies "Applied Logistics" (ANO NRC 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 (Minutes No. 34 dated October 7, 2008)

Short name of the country according to MK (ISO 3166) 004-97	Country code according to MK (ISO 3166) 004-97	Abbreviated name of the national standards body
Azerbaijan		Azstandard
Armenia		Ministry of Trade and Economic Development
Belarus		State Standard of the Republic of Belarus
Kazakhstan		State Standard of the Republic of Kazakhstan
Kyrgyzstan		Kyrgyzstandart
Moldova		Moldova-Standard
Russian Federation		Federal Agency for Technical Regulation and Metrology
Tajikistan		Tajikstandart
Turkmenistan		Main State Service "Turkmenstandartlary"
Ukraine		Gospotrebstandart of Ukraine

4 By order of the Federal Agency for Technical Regulation and Metrology dated December 25, 2008 No. 702-st, the interstate standard GOST 2.701-2008 was put into effect as the national standard of the Russian Federation from July 1, 2009.

Information on the entry into force (termination) of this standard is published in the index "National Standards".

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

INTERSTATE STANDARD

Introduction date - 2009-07-01

1 area of use

This standard applies to circuits made in paper and electronic forms, products of all industries, as well as electrical circuits of energy facilities (power plants, electrical equipment of industrial enterprises, etc.), establishes the types, types of circuits and general requirements for their implementation .

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

2 Normative references

This standard uses references to the following interstate standards:

3 The scheme for dividing the product into its component parts (division scheme) is issued to determine the composition of the product.

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

table 2

Circuit Type	Definition	Schema type code
Structural diagram	A document that defines the main functional parts of the product, their purpose and relationships
Functional diagram	A document explaining the processes occurring in individual functional chains of a product (installation) or a product (installation) as a whole
Schematic diagram (full)	A document that defines the complete composition of the elements and the relationship between them and, as a rule, gives a complete (detailed) understanding of the principles of operation of the product (installation)
Connection diagram (mounting)	A document showing the connections of the component parts of the product (installation) and defining the wires, bundles, cables or pipelines that make these connections, as well as the places of their connection and input (connectors, boards, clamps, etc.)
Wiring diagram	Document showing the external connections of the product
General scheme	A document defining the components of the complex and connecting them to each other at the place of operation
Layout plan	A document that determines the relative location of the component parts of the product (installation), and, if necessary, also bundles (wires, cables), pipelines, light guides, etc.
Combined scheme	Document containing elements various types schemes of the same kind
Note - The names of the types of circuits indicated in brackets are set for electrical circuits of power facilities.

4.4 The name and code of the scheme is determined by their type and type.

The name of a combined scheme is determined by a combination of types of schemes of the same type.

The name of the combined scheme is determined by a combination of types of schemes of the same type.

The circuit code must consist of an alphabetic part that defines the type of circuit (see Table 1) and a digital part that defines the type of circuit (see Table 2): for example, electrical circuit diagram - E3; hydraulic connection diagram - G4; structural division scheme - E1; electrohydraulic circuit diagram - C3; electrohydropneumokinematic schematic diagram - С3; electrical connection and connection diagram - E0; hydraulic structural diagram, principal and connections - Г0.

Notes

When performing combined schemes, the rules established for schemes of the corresponding types must be observed.

The nomenclature, names and codes of combined schemes should be established in the standards of the organization.

The nomenclature, names and codes of other schemes should be established in the standards of the organization.

When a product (installation) is issued with several circuits of a certain type and type in the form of independent documents, it is allowed to indicate the name of the functional circuit or functional group in the name of the circuit (for example, electrical circuit diagram of the drive, electrical circuit diagram of power supply circuits; hydraulic circuit diagram of the drive, hydraulic circuit diagram lubrication, hydraulic circuit cooling circuit).

In this case, each scheme is assigned a designation according to GOST 2.201 as an independent design document and, starting from the second scheme, serial numbers are added to the scheme code in the designation through a dot in Arabic numerals (for example, ABVG.ХХХХХХ.ХХХЭЗ, АВВГ.ХХХХХХ.ХХХЭ3.1 ; ABCD.XXXXXXX.XXXXY3, ABCD.XXXXXXX.XXXXY3.1, ABCD.XXXXXXX.XXXXY3.2).

4.5 To schemes or instead of schemes in cases established by the rules for the implementation of specific types of schemes, tables are issued in the form of independent documents containing information about the location of devices, connections, connection points 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 of the connection table for the electrical wiring diagram is TE4.

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

Connection tables are written in the specification after the schemes for which they are issued, or instead of them.

5 General performance requirements

5.1 Set (nomenclature) of schemes

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

The number of types of diagrams per product (installation) should be minimal, but in aggregate they must contain information in an amount sufficient for the design, manufacture, operation and repair of the product (installation).

5.2 Formats

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

The required level of data detail, due to the purpose of the scheme;

Conditions for storage and circulation of schemes;

Features and capabilities of the technique for performing, reproducing and (or) microfilming circuits;

The possibility of processing schemes by means of computer technology.

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

5.3 Building the circuit

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

5.3.2 Symbols for elements, devices, functional groups and interconnection lines connecting them should be placed on the diagram in such a way as to provide the best idea of the structure of the product and the interaction of its components.

Notes

1 It is allowed to place UGOs on the diagram in the same order in which they are located in the product, provided that this does not impair the readability of the diagram.

The elements in this case are written to the list of elements in one line.

Picture 1

When assigning designations to elements (devices, functional groups), elements (devices, functional groups) that are not shown in the diagram (see Figure 2) should be taken into account. In this case, the total number of identical elements is indicated above the dashed line. The elements in this case are written to the list of elements in one line.

Figure 2

5.3.3 When executing a diagram on several sheets or as a set of diagrams of the same type, it is recommended:

For diagrams intended to explain the principles of operation of the product (functional, principal), depict on each sheet or on each diagram a certain functional group, functional circuit (line, path, etc.);

For diagrams intended to determine connections (connection diagram), depict on each sheet or on each diagram a part of the product (installation) located in a certain place in space or in a certain functional circuit.

Schemes executed in electronic form are recommended to be single-sheeted, ensuring that this sheet is divided into the required formats when printed.

5.3.4 The distance (clearance) between two adjacent UGO lines must be at least 1.0 mm.

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

5.3.5 Devices that have an independent circuit diagram are performed on the diagrams in the form of a figure with a solid line, equal in thickness to the interconnection lines.

Note - It is allowed to make devices in the form of a figure with a line twice as thick as the interconnection line.

Note to 5.3.5, 5.3.6 - The figure outlined by the contour line, as a rule, should be a rectangle. It is allowed to highlight parts of the scheme with non-rectangular shapes.

5.3.7 When designing a product that includes several different devices, it is recommended to carry out an independent circuit diagram for each device.

For devices that can be used in other products (installations) or independently, independent circuit diagrams should be made.

Notes

2 When performing a schematic diagram on several sheets, the following requirements must be met:

When assigning positional designations to elements, continuous numbering is observed within the product (installation);

The list of elements should be general;

Individual elements can be re-drawn on other sheets of the diagram, keeping the reference designations assigned to them on one of the sheets of the diagram.

3 When developing several independent circuit diagrams for one product, the following requirements should be met:

Positional designations are assigned to elements according to the rules established in note 2;

In each scheme, there should be a list of only those elements that have reference designations assigned in this scheme;

Separate elements can be re-drawn on several diagrams, keeping behind them the positional designations assigned to them on one of the diagrams.

In this case, instructions are placed on the diagrams according to the type: “Elements shown in the diagram and not included in the list of elements, see ABVG.XXXXXXX.XXXG3” or “Hydraulic valves K1 and K5, see ABVG.XXXXXX.XXXG3”.

5.4 Graphic symbols

5.4.1 When performing schemes, the following graphic symbols are used:

UGO, established in the standards of the Unified System for Design Documentation, as well as built on their basis;

Rectangles;

Simplified external outlines (including axonometric ones). If necessary, non-standardized UGOs are used.

When using non-standardized UGO and simplified external outlines, appropriate explanations are given in the diagram.

UGO, for which several acceptable (alternative) embodiments have been established, differing in geometric shape or degree of detail, should be applied based on the type and type of the developed scheme, depending on the information that needs to be conveyed on the scheme by graphic means. In this case, on all diagrams of the same type included in the documentation set, one selected designation option must be used.

The use of certain UGOs on the circuits is determined by the rules for the implementation of circuits of a certain type and type.

Figure 3

UGO elements, the dimensions of which are not established in these standards, should be depicted in the diagram in the dimensions in which they are made in the relevant standards for UGO.

The dimensions of the UGO, as well as the thickness of their lines, must be the same on all diagrams for a given product (installation).

Notes

1 All dimensions of the UGO are allowed to be proportionally changed.

5.4.3 UGO on the diagrams should be made with lines of the same thickness as the interconnection lines.

If the meaning or readability of the designation may be violated when rotating or mirroring the UGO, then such designations should be depicted in the position in which they are given in the relevant standards.

UGOs containing numeric or alphanumeric designations are allowed to be rotated counterclockwise only through an angle of 90 ° or 45 °.

5.5 Relationship lines

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

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

5.5.3 Relationship lines passing from one sheet or one document to another should be cut off outside the diagram image without arrows.

Next to the break in the interconnection line, the designation or name assigned to this line (for example, wire number, pipeline number, signal name or its abbreviated designation, etc.) should be indicated, and in parentheses the sheet number of the diagram and zone, if any, if executing the scheme on several sheets, for example, sheet 5, zone A6 (5, A6), or the designation of the document when executing schemes with independent documents, to which the interconnection line passes.

5.5.4 Relationship lines should normally be shown in full.

Note - Relationship lines within one sheet, if they make it difficult to read the diagram, can be cut off. Interconnection line breaks end with arrows. Near the arrows indicate the places for designating interrupted lines, for example, connections, and (or) the necessary characteristics of the circuits, for example, polarity, potential, pressure, fluid flow, etc.

Designations can be alphabetic, alphanumeric and numeric.

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

5.6 Text information

5.6.2 Text data is given in the diagram in cases where the information contained in them is inappropriate or impossible to express graphically or in the form of UGO.

Text data, depending on their content and purpose, can be located:

Next to UGO;

Inside UGO;

Above the lines of interconnection;

In breaking the lines of interconnection;

Near the ends of interconnection lines;

On the free field of the scheme.

5.6.3 Text data relating to lines is oriented parallel to the horizontal sections of the corresponding lines.

With a high schema density, vertical data orientation is allowed.

Inscriptions, signs or UGOs intended for application to the product are enclosed in quotation marks in the diagram.

If an inscription in quotation marks is to be applied to the product, then appropriate instructions are given in the field of the diagram.

5.6.5 Above the main inscription it is allowed to place the necessary technical instructions, for example, the requirements on the inadmissibility of the joint laying of some wires, bundles, cables, pipelines, the minimum allowable dimensions between wires, bundles, bundles and cables, pipelines, data on the specificity of the laying and protection of wires, bundles, cables and pipelines, etc.

When executing a diagram on several sheets, technical instructions that are common to the entire diagram should be placed in the free field (if possible above the main inscription) of the first sheet of the diagram, and technical instructions relating to individual elements should be placed either in close proximity to the image of the element, or on the free field of the sheet where they are most necessary for the convenience of reading the diagram.

5.7 List of elements

5.7.1 The list of elements is placed on the first sheet of the diagram or performed as a separate 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 the electronic structure of the product in accordance with GOST 2.053, it is recommended to obtain a list of elements from it in the form of a report drawn up in accordance with the requirements of this standard.

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

Figure 4

The columns 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 (main design document, interstate standard, standard of the Russian Federation, organization standard, technical specifications) ; - for a functional group - name;

5.7.3 When performing a list of elements on the first sheet of the diagram, it is usually placed above the main inscription.

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

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

The list of elements is written in the specification after the scheme to which it is issued.

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

5.7.5 When dividing the circuit field into zones, the list of elements is supplemented with the column "Zone" (see Figure 5), indicating in it the designation of the zone in which this element (device) is located.

Figure 5

Notes

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

2 At the stages of the technical proposal, draft and technical designs, information about the elements placed on the diagram may be incomplete.

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

5.7.6 Elements in the list are written in groups in alphabetical order of letter designators.

Within each group having the same letter reference designations, the elements are arranged in ascending order of serial numbers.

When performing digital designations on the diagram, they are recorded in the list in ascending order.

Notes

1 To facilitate the introduction of changes, it is allowed to leave several blank lines between separate groups of elements, and with a large number of elements within groups, between elements.

2 Elements of the same type with the same parameters, having sequential serial numbers on the diagram, can be written in the list in one line. In this case, in the column "Pos. designation" enter only positional designations with the smallest and largest serial numbers, for example: R 3, R 4, C8 ... C12, and in the column "Col." is the total number of such elements.

3 When recording elements of the same name, differing in technical characteristics and other data and having the same letter designation, it is allowed to write in the column "Name":

The name of these elements in the form of a common name;

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

Figure 6

The recording of the elements included in each device (functional group) begins with the name of the device or functional group, which is written in the "Name" column and underlined. In computer-aided design, the name of the device (functional group) may not be underlined.

Below the name of the device (functional group), one free line must be left, above - at least one free line.

Notes

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

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

The total number of identical devices (functional groups) is indicated in the column "Number." on the same line as the title.

4 If the product contains elements that are not independent designs, then when writing them into the list, the column “Name” is not filled in, and in the column “Note” an explanatory inscription or a link to an explanatory inscription is placed in the diagram field (see Figure 7).

Figure 7

6 Rules for the implementation of combined schemes

6.2 The information placed on the diagram and the design of the diagram as a whole should be determined according to the rules established for the corresponding types of diagrams of this type.

For example, a hydropneumokinematic schematic diagram - one feature for pneumatic elements (devices, functional groups); two - for kinematic.

7 Rules for the execution of combined schemes

7.2 The information placed on the diagram and the design of the diagram as a whole should be carried out according to the rules established for the corresponding types of diagrams of this type.

For example, a hydraulic structural diagram, a circuit diagram and connections - one line in the block diagram, two - in the circuit diagram and three - in the connection diagram.

Annex A
(reference)
Explanations to some clauses of this standard for a better understanding of the text

Examples of circuit elements are: resistor, relay contact, pipe, pump, coupling, etc.

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

Examples of a functional chain: audio channel, video channel, microwave path, etc.

Structural diagrams are developed during the design of products (installations) at stages preceding the development of diagrams of other types, and they are used for general familiarization with the product (installation).

Functional diagrams are used to study the principles of operation of products (installations), as well as during their installation, control and repair.

Schematic diagrams are used to study the principles of operation of products (installations), as well as during their adjustment, control and repair. They serve as the basis for the development of other design documents, such as wiring diagrams (installation) and drawings.

Connection diagrams (installation) are used in the development of other design documents, primarily drawings that determine the laying and methods of fastening wires, bundles, cables or pipelines in a product (installation), as well as for making connections and for monitoring, operating and repairing products ( settings).

Connection diagrams are used in the development of other design documents, as well as for connecting products and during their operation.

General schemes are used when familiarizing with the complexes, as well as during their control and operation. A general scheme for an assembly unit can be developed if necessary.

Layout schemes are used in the development of other design documents, as well as in the operation and repair of products (installations).

Keywords:design documentation, schemes, view, types, general requirements

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE

STANDARD

Unified system of design documentation

SCHEME

Species and types

General performance requirements

Official edition

Standartinform

Foreword

About the standard

1 DEVELOPED by the Federal State Unitary Enterprise All-Russian Research Institute for Standardization and Certification in Mechanical Engineering (VNIINMASH), Autonomous Non-Commercial Organization Research Center for CALS-technologies "Applied Logistics" (ANO NRC 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 (Minutes No. 34 dated October 7, 2008)

Short name of the country according to MK (ISO 3166) 004-97	Code of the country according to MK (ISO 3166) 004-97	Abbreviated name of the national standards body
Azerbaijan		Azstandard
		Ministry of Trade and Economic Development
Belarus		State Standard of the Republic of Belarus
Kazakhstan		State Standard of the Republic of Kazakhstan
Kyrgyzstan		Kyrgyzstandart
		Moldova-Standard
Russian Federation		Federal Agency for Technical Regulation
		research and metrology
Tajikistan		T ajikstandart
Turkmenistan		Main State Service "Turkmenstandartlary"
		Gospotrebstandart of Ukraine

4 By order of the Federal Agency for Technical Regulation and Metrology dated December 25, 2008 No. 702-st, the interstate standard GOST2.701-2008 was put into effect as the national standard of the Russian Federation from July 1, 2009.

5 INSTEAD OF GOST2.701-84

Information on the entry into force (termination) of this standard is published in the index "National Standards".

In the Russian Federation, this standard cannot be fully or partially reproduced, replicated and distributed as an official publication without the permission of the Federal Agency for Technical Regulation and Metrology

INTERSTATE STANDARD

Unified system for design documentation SCHEMES

Types and types. General performance requirements

Unified system for design documentation. Diagrams. Kinds and types. General requirements for fulfillment

Introduction date - 2009-07-01

1 area of use

2 Normative references

GOST 2.004-88 Unified system for design documentation. General requirements for the implementation of design and technological documents on printing and graphic output devices of a computer

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

GOST 2.104-2006 Unified system for design documentation. Basic inscriptions

GOST 2.201-80 Unified system for design documentation. Designation of products and design documents

GOST 2.301-68 Unified system for design documentation. Formats

3 Terms and definitions

In this standard, the following terms are used with their respective definitions:

3.1 type of scheme: Classification grouping of schemes, distinguished by the features of the principle of operation, the composition of the product and the links between its components.

3.2 scheme type: Classification grouping, allocated on the basis of their main purpose.

3.3 relationship line

3.4 functional part: Element, device, functional group. *★

Official edition

3.5 circuit element: A component of the circuit that performs a specific function in the product (installation) and cannot be divided into parts that have an independent purpose and their own symbols * - 1 >.

3.6 device: A set of elements representing a single design *.

3.7 functional group: A set of elements that perform a specific function in the product and are not combined into a single design.

3.8 functional chain: A set of elements, functional groups and devices (or a set of functional parts) with interconnection lines that form a channel or path for a specific purpose *.

3.9 installation: Conditional name of the facility in power facilities for which the scheme is issued.

4 Types and types of circuits

4.1 Scheme is a document that shows in the form of conventional images or symbols the components of the product and the relationship between them.

4.2 Types of schemes, depending on the types of elements and connections that make up the product (installation), and their codes are presented in table 1.

Table 1

Diagram view	Definition	Diagram view code
Electric scheme
Hydraulic scheme
Scheme pneumatic
Gas circuit (except pneumatic circuit)
Kinematic scheme
Scheme vacuum
Optical scheme
Energy scheme
division scheme
Combined scheme

End of table 1

Notes

1 For a product that includes elements of different types, several diagrams of the corresponding types of the same type are developed, for example, an electrical circuit diagram and a hydraulic circuit diagram, or one combined diagram containing elements and connections of different types.

2 On a diagram of one type, it is allowed to depict elements of diagrams of another type that directly affect the operation of a diagram of this type, as well as elements and devices that are not included in the product (installation) on which (which) the diagram is made, but necessary to explain the principles of operation of the product ( settings).

Conditional graphic symbols (UGO) of such elements and devices, as well as their interconnection lines, are performed on the diagram with dash-dotted lines equal in thickness to the interconnection lines (see Figures 1 and 2).

3 The scheme for dividing the product into its component parts (division scheme) is issued to determine the composition of the product.

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

table 2

Circuit Type	Definition	Schema type code
Structural diagram	A document that defines the main functional parts of the product, their purpose and relationships
Functional diagram	A document explaining the processes occurring in individual functional chains of a product (installation) or a product (installation) as a whole
Schematic diagram (full)	A document that defines the complete composition of the elements and the relationship between them and, as a rule, gives a complete (detailed) understanding of the principles of operation of the product (installation)
Connection diagram (mounting)	A document showing the connections of the component parts of the product (installation) and defining the wires, bundles, cables or pipelines that make these connections, as well as the places of their connection and input (connectors, boards, clamps, etc.)
Wiring diagram	Document showing the external connections of the product
General scheme	A document defining the components of the complex and connecting them to each other at the place of operation
Layout plan	A document that determines the relative location of the component parts of the product (installation), and, if necessary, also bundles (wires, cables), pipelines, light guides, etc.
Combined scheme
Note - The names of the types of circuits indicated in brackets are set for electrical circuits of power facilities.

4.4 The name and code of the scheme is determined by their type and type.

The name of a combined scheme is determined by a combination of types of schemes of the same type.

The name of the combined scheme is determined by a combination of types of schemes of the same type.

The circuit code must consist of an alphabetic part that defines the type of circuit (see Table 1), and a digital part that defines the type of circuit (see Table 2): for example, electrical circuit diagram - EZ; hydraulic connection diagram - G4; structural division scheme - E1; electrohydraulic circuit diagram - SZ; electrohydropneumokinematic schematic diagram - SZ; electrical connection and connection diagram - E0; hydraulic structural, principal and connections diagram - GO.

Notes

When performing combined schemes, the rules established for schemes of the corresponding types must be observed.

The nomenclature, names and codes of combined schemes should be established in the standards of the organization.

The nomenclature, names and codes of other schemes should be established in the standards of the organization.

In this case, each scheme is assigned a designation according to GOST 2.201 as an independent design document and, starting from the second scheme, serial numbers are added to the scheme code in the designation through a dot in Arabic numerals (for example, ABVG.ХХХХХХ.ХХХЭЗ, АВВГ.ХХХХХХ.ХХХЭЗ. 1; ABCD.XXXXXXX.XXXXYZ, ABCD.XXXXXXXX.XXXXY3.1, ABCD.XXXXXX.XXXXYZ.2).

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

Connection tables are written in the specification after the schemes for which they are issued, or instead of them.

5 General performance requirements

5.1 Set (nomenclature) of schemes

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

5.2 Formats

5.2.1 The formats of the diagram sheets are selected in accordance with the requirements established in GOST 2.301 and GOST 2.004, with the main formats being preferred.

When choosing formats, consider:

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

The required level of data detail, due to the purpose of the scheme;

Conditions for storage and circulation of schemes;

Features and capabilities of the technique for performing, reproducing and (or) microfilming circuits;

The possibility of processing schemes by means of computer technology.

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

5.3 Building the circuit

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

Notes

1 It is allowed to place UGOs on the diagram in the same order in which they are located in the product, provided that this does not impair the readability of the diagram.

The elements in this case are written to the list of elements in one line.

AJ-=A6 ATLU-ATLB

Picture 1