GB/T 4728.2-1998 Graphical symbols for electrical schematics Part 2 Symbol elements, limiting symbols and other commonly used symbols
Some standard content:
GB/T 4728.2—1998
This standard is equivalent to the International Electrotechnical Commission standard IFC617-2:1996 "Graphic symbols for schematic diagrams Part 2 Symbol elements, qualifiers and other commonly used symbols".
This standard is a revision of GB4728.2-84 "Graphic symbols for electrical diagrams Part 2 Symbol elements, qualifiers and other commonly used symbols". Compared with GB4728.2--84, the symbol classification and category names of this standard have changed significantly; 02-02-0102-02-02, 02-02-12.02-06-06, 02-14-06, 02-14-07, 02-14-08 of GB1728.2--84 have been deleted. 02-14-09, 02-17-03, 02-17-04, 02-17-05, 02-17-06, etc. 12 symbols, 02-01-08, 02-08-06, 02-08-07, 02-09-04, 02-09-05, 02-13-28, 02~17-06A, etc. 7 symbols were added; symbol 02-17-07 was adjusted to GB4728.7; the original 02-15-05 was transferred to the description column of 02-15-04. GB4728.2 is a part of the series standard "Graphic Symbols for Electrical Schematics". This series of standards includes the following parts:
GB4728.1 Graphical symbols for electrical diagrams
GB/T4728.2 Graphical symbols for electrical schematics Symbol elements, limiting symbols and other commonly used symbols GB/T4728.3 Graphical symbols for electrical schematics Conductors and connectors
GB4728.4 Graphical symbols for electrical diagrams Passive components GB 4728.5
Semiconductor tubes and electron tubes
Graphic symbols for electrical diagrams
GB 4728.6 T
Graphic symbols for electrical diagrams
GB 4728.7
Graphic symbols for electrical diagrams
Graphic symbols for electrical diagrams
GB 4728.91
Graphic symbols for electrical diagrams
GB 1728. 10
Graphic symbols for electrical diagrams
Generation and conversion of electric energy
Switches, control and protection devices
Measuring instruments, lamps and signaling devices
Telecommunications: switching and peripheral equipment
Telecommunications: transmission
GB4728.11 Graphic symbols for electrical diagrams
Electric lighting and telecommunications arrangements
GB/T4728.12 Graphic symbols for electrical schematics Binary logic elements GB/T4728.13 Graphic symbols for electrical schematics Analog elements The scope and referenced standards of this series can be found in IEC617-1. When GB4728.1 is revised, IEC617-1 will be adopted equivalently. The symbols 02-02-15 and 02-02-16 in this standard are quoted from GB/T4026-92 "General Rules for Identification and Application of Alphanumeric Systems for Terminal Blocks and Specific Wire Ends of Electrical Equipment" (equivalent to IEC445), GB8445~-87 "Regulations on Circuits and Magnetic Circuits" refer to IEC375:1972, GB10066.3-88 "Test Methods for Electric Heating Equipment - Coreless Induction Furnace" is equivalent to IEC646. GB4458.1-84, and "Technical Drawing Drawing Method" refers to ISO128:1982. The Appendix B and Appendix C of the original IEC617-2:1996 are French and English indexes respectively, which are deleted in this standard. Appendix B of this standard is the symbols added to GB4728.2-84 that are not in the original IEC617-2 (1st edition). From the date of implementation, this standard will replace GB4728.2-84. Appendix A and Appendix B of this standard are both informative appendices. This standard is proposed and managed by the National Technical Committee for Electrical Documentation and Graphic Symbol Standardization. This standard was drafted by the Mechanical Science Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are: Guo Ting, Li Shilin, Gao Huimin, Meng Qinglan, Yin Tao, Liu Yuehua, Wei Yanjun. GB/T4728.2—1998
IEC Foreword
1) IEC (International Electrotechnical Commission) is a worldwide standardization organization including all national electrotechnical committees (IEC National Committees). The goal of IEC is to promote international cooperation on various issues related to standards in the electrical and electronic fields. For this purpose and other activities, IEC also publishes international standards. The formulation of international standards is entrusted to various technical committees. Any IEC National Committee may participate in the standard formulation work if it is interested in the subject being studied. International organizations, governments and non-governmental organizations that have relations with IEC may also participate in the standard formulation work. IEC and ISO work closely under the conditions determined by the agreement between them. 2) IEC formal resolutions and agreements on technical issues, developed by technical committees in which national committees with special interest in these issues participate, express as far as possible international consensus on the subject matter involved. 3) They are published in the form of standards, technical reports or guidelines and recommended for international use, and in this sense are accepted by the national committees.
4) In order to promote international unification, the IEC national committees undertake the task of applying IEC international standards to the greatest extent possible in their countries and regions. Any differences between IEC international standards and corresponding national or regional standards should be clearly indicated in the latter. International Standard IEC617-2 was drafted by Technical Committee 3A (Graphic Symbols for Diagrams) of IEC Technical Committee 3 (Documentation and Graphic Symbols).
This second edition abolishes and replaces the first edition of 1983 and has been technically revised. The text of this standard is based on the following documents:
Draft International Standard (FDIS)
3A(CO)167
3A(CO)172
3A(CO)189
3A(CO)200
3A(CO)202
3A(CO)204
3A/380/FDIS
Voting Full information on this standard can be found in the voting report mentioned in the table above. Appendices A, B and C are for information purposes only. Voting report
3A(CO)176
3A(CO)181
3A(CO)196
3A(CO)211
3A(CO)214
3A(CO)216
3A/418/RVD
GB/T 4728.2--1998
IEC Introduction
This part of IEC617 forms part of the series of graphic symbols for use on diagrams. The series consists of the following parts:
Part 1 General information, general index, comparison tablePart 2 Symbol elements, qualifiers and other commonly used symbolsPart 3
Part 4
Part 5
Part 6
Conductors and connectors
Basic passive components
Semiconductors and electron tubes
Generation and conversion of electrical energy
Part 7
Part 8
Part 9| |tt||Part 10
Part 11
Part 12
Part 13
Switchgear, controlgear and protection devices Measuring instruments, lights and signaling devices
Telecommunications: switching and peripheral equipment
Telecommunications: transmission
Architectural and topographical installation plans and diagrams
Binary logic elements
Analog elements
The scope and reference standards of this series are shown in IEC617-1. The above symbols are designed according to the requirements of ISO11714-1* to be published. The module used is M-2.5mm. In order to make smaller symbols clearer, these symbols are enlarged by one time in this standard and marked with "200%" in the symbol column; in order to save space, larger symbols are reduced by one time and marked with "50%" in the symbol column. In order to facilitate the drawing of multiple terminals and meet other layout requirements, the size of the symbol (such as height) can be changed according to Article 7 of ISO11714-1. Regardless of whether the size of the symbol is enlarged, reduced or corrected, the original line width is not corrected proportionally.
The symbol layout of this standard should make the distance between the connecting lines a multiple of a certain module. In order to facilitate the marking of terminals, usually Select 2M. For ease of understanding, symbols are drawn at a certain size and the same grid is used for all symbols. In computer-aided drawing systems, all symbols should be drawn within a grid that is reproduced on the background of the symbol. The old symbols included in Appendix A of the first edition of IEC617-2 have a transition period and are no longer included in the second edition, and it will be made clear that they are no longer in use.
The index to Annexes B and C includes an alphabetical index of the symbol name and its number, with the symbol name based on the description of the symbol in this part. The overall alphabetical index of symbols for all parts is provided by IEC 617-1, * Currently, it is still in the draft international standard stage (Document 3/563/DIS). National Standard of the People's Republic of China
Graphical symbols for electrical schematics
Part 2
Symbol elements, qualifying symbols
And other commonly used symbols
Graphical symbols for diagramsPart 2 Symbol elements, qualifying symbols and othersymbols having general applicationPart 1
Outline and enclosure
02-01-01
02-01-02
02-01-03
Form 1
Form 2
Form 3
Graphical symbols
Approved by the State Administration of Technical Supervision on March 11, 199810
Symbol elements
Objects, such as:
GB/T 4728.2---1998
idt IEC 617-2:1996
Replaces GB4728.2-84
Functional unit
·Component
The symbol outline should be filled or added with appropriate symbols or codes to indicate the type of object
Other shapes of outlines may be used if required by the design1998-12-01Implementation
02-01-04
02-01-05| |tt||02-01-06
02-01-07
02-01-08
Form 1
Form 2
Types of current and voltage
02-02-01
02-02-02
02-02-03
Graphic symbols
Graphic symbols
GB/T 4728.2—1998
Enclosure (ball or box)
If the design requires, other shapes of outlines can be used
If the cover has a special protective function, a note can be added to draw attention
If it is certain that it will not cause confusion, the enclosure can be omitted. If the enclosure is connected to other objects, the enclosure symbol must be shown.
If necessary, the enclosure can be disconnected and drawn.
Boundary lines
This symbol is used to indicate the boundary of groups of objects that are physically, mechanically or functionally related.
Long and short lines can be combined in any way.
For example, to reduce the penetration of electric or electromagnetic fields, the shielding symbol can be drawn in any convenient shape to prevent unintentional direct contact.
General symbols
The asterisk should be replaced by the symbol of equipment or devices with unintentional direct contact protection.
Part 2
Qualifying symbols
Moved to Appendix A: 02-A1-01
Moved to Appendix A: 02-A1-02
The voltage can be marked on the right side of the symbol and the system type can be marked on the left side
Example: 2/M-220/110 V
02-02-04
02-02-05
02-02-06
02-02-07
02:02-08
02-0209
02-02 -10
02-02-11
02-02·12
02-02-13
02-02-14
02-02-15
02-02-16
～50 Hz
Graphic symbol
-~100. . : 600 kHz
3/N ~~400/230 V 50 Hz
3/N~50 Hz/TN-S
GB/T 4728. 2---1998
Frequency value or frequency range can be marked on the right side of the symbolExample:
AC 50Hz
AC, frequency range 100kHz to 600kHzVoltage value can also be marked on the right side of the symbol
Phase number and neutral line can be marked on the left side of the symbol when they existAC, three-phase with neutral line, 400V\ (the voltage between phase line and neutral line is 230V1)), 50Hz (also see IEC 1293)
If it is necessary to mark the system according to the provisions of IEC364-3, the corresponding symbol must be added to the symbol
AC, three-phase, 50Hz, system with one direct grounding point and complete separation of neutral and protective conductors. AC of different frequency ranges
When it is necessary to use a given drawing method to distinguish different frequency ranges, the following symbols can be used: Relative low frequency (power frequency or sub-audio frequency)wwW.bzxz.Net
Intermediate frequency (audio frequency)
Relative High frequency (super-audio frequency, carrier frequency or radio frequency) rectified current with AC component (used when it is necessary to distinguish it from rectified and filtered current)
Positive polarity
Negative polarity
Neutral (neutral line)
This neutral symbol is given in GB/T4026
Middle line
This middle line symbol is given in GB/T40261) According to the standard GB156-93 standard electricity. The corresponding levels are 380V and 220V. 12
Adjustability, variability and automatic control
GB/T 4728.2--1998
Adjustability is a non-intrinsic variability that can be set to an appropriate value by adjustment. 3.1
When the variable is controlled by an external device, the variability is non-intrinsic, such as controlling a resistor with a regulator. Variability is intrinsic when the amount of the variable depends on the properties of the device itself, such as when a resistor changes in response to voltage or temperature. The symbols for adjustability and variability should span the centerline of the main symbol at approximately 45°. Serial Number
02-03-01
02-03-02
02-03-03
02-03-04
02-03-05
02-03-06
02-03-07
02-03-08
02-03-09
02-03-10
Graphic Symbol
Adjustability, General Symbol
Nonlinear Adjustable
Variable Variable, intrinsic, general symbol
Information about the controlled variable, such as voltage or temperature, can be indicated close to the symbol
Variable, intrinsic, nonlinear
Application rules are the same as symbols 02-03-03
Adjustment conditions can be indicated next to the symbol Example:
Presetting is only allowed when the current is equal to zero
Step action
Numbers can be added to indicate the number of steps
Indicates that the step adjustment can be 5 steps
Continuous variability
Example:
Continuously variable presetting
02-03-11
02-03-12
Force or direction of movement
Graphical symbols
GB/T 4728.2—1998
Automatic Control
The controlled quantity may be indicated next to the symbol
Example:
Automatic Gain Control Amplifier
4.1 Arrows may be used to indicate the direction in which the moving part of a device will produce the desired effect (see symbol 02-04-02 for example). Arrows may also be used to indicate the direction of a force or the direction of motion of the object represented by the symbol. In this case, annotation is required. 4.2 The effect produced by the motion may be described by symbols or words. Serial number
02-04-01
02-04-02
02-04-03
02-04-04
02-04-05
02-04-06
Graphic symbol
According to the direction of the arrow:
Unidirectional force
Unidirectional linear motion
Bidirectional Force
Bidirectional linear motion
Example:
Frequency increases when the slider 3 moves toward the terminal 2
In the direction of the arrow:
One-way circular motion
One-way rotation
One-way torsion
Bidirectional circular motion
Bidirectional rotation
Bidirectional torsion
Restricted in both directions:
Bidirectional circular motion
Bidirectional rotation
Bidirectional torsion
Vibration (oscillation)
Flow direction
02-05-01
02-05-02
02-05-03
02-05-04
02-05-05
02-05-06||tt ||02-05-07
02-05-08
Action correlation of feature quantity
02-06-01
02-06-02
02-06-03
02-06-04
02-06-05
Graphic symbol
Graphic symbol
GB/T 4728.2-1998
One-way transmission
One-way flow
For example, energy, signal, information
Simultaneous bidirectional transmission
Send and receive simultaneously
Non-simultaneous bidirectional transmission
Alternate sending and receiving
When used in combination with other symbols, the meaning expressed by the arrow is clear, and the small black dot can be omitted, see symbol 10-06-04
When used in combination with other symbols, the meaning expressed by the arrow is clear, and the small black dot can be omitted, see symbol 10-06-03
Energy output from busbar (busbar)
Energy input to busbar (busbar)
Bidirectional energy flow
When the characteristic value is greater than the set value, the action can also be seen in GB10066.3
When the characteristic value is less than the set value, the action can also be seen in GB 10066. 3
Action when the characteristic value is greater than the high setting value or less than the low setting value
Action when the characteristic value is equal to zero
Action when the characteristic value is approximately equal to zero
Material type
GB/T4728.2-1998
7.1 The type of material can be represented by chemical symbols or one of the limiting symbols given below. These symbols should be drawn in a rectangle. When these symbols are used in combination with other symbols, the rectangle can be omitted. If necessary, the material symbols given in GB4458.1 can be used. No.
02-07-01
02-07-02
02-07-03
02-07-04
02-07-05
02-07--06
02-07-07
Effect or correlation
02-08-02
02-08-03
Graphic symbol
Graphic symbol
Material, unregulated Fixed type
Solid materials
Liquid materials
Gaseous materials
Electret materials
Semiconductor materials
Insulator materials
Thermal effects
Electromagnetic effects
Magnetostrictive effects
02-08-04
02-08-05
02-08-06
02-08-07
Graphical symbols
GB/T 4728.2
Magnetic field effects or magnetic field correlation
Time delay
Semiconductor effects
Coupling effects with electrical isolation
9.1 Arrow pointing - A symbol indicating that the device represented by the symbol reacts to the indicated type of radiation. 9.2 An arrow pointing away from a symbol indicates that the device represented by the symbol emits the indicated type of radiation. 9.3 An arrow within a symbol indicates that it has radiation source number
02-09-01
02-09-02
Graphic symbol
Non-ionizing electromagnetic radiation, such as radio waves or visible light
If the source and target are marked, the arrow points from the source to the targetSource
If there is a target but the source is not clearly indicated, the arrow points to the lower right
If the target is not clearly marked, the arrow points to the upper rightNon-ionizing relative radiation (such as coherent light)17
02-09-03
02-09-04
02-09-05
10Signal waveform
Graphic symbol
GB/T 4728.2—1998
Ionizing radiation
If it is necessary to identify the specific type of ionizing radiation, the following symbols or letters may be used:
Alpha particle
β-—Beta particle
—ray
Unary muon
Kaon
From muon
-X-ray
Nonionizing bidirectional electromagnetic radiation, such as that produced by radar or optically controlled relays with mirror reflectorsNonionizing bidirectional coherent radiation
10.1 Each symbol represents an ideal shape of a waveform. Serial number
02-10-01
02-10-02
02-1003
02-10-04
02-10-05
Graphic symbol
Positive pulse
Negative pulse
AC pulse
Positive step function
Negative step function2-1998
One-way transmission
One-way flow
For example, energy, signal, information
Simultaneous bidirectional transmission
Send and receive simultaneously
Non-simultaneous bidirectional transmission
Alternate sending and receiving
When used in combination with other symbols, the meaning of the arrow is clear, and the small black dot can be omitted, see symbol 10-06-04
When used in combination with other symbols, the meaning of the arrow is clear, and the small black dot can be omitted, see symbol 10-06-03
Energy output from busbar (busbar)
Energy input to busbar (busbar)
Bidirectional energy flow
When the characteristic value is greater than the set value, the action can also be seen in GB10066.3
When the characteristic value is less than the set value, the action can also be seen in GB 10066. 3
Action when the characteristic value is greater than the high setting value or less than the low setting value
Action when the characteristic value is equal to zero
Action when the characteristic value is approximately equal to zero
Material type
GB/T4728.2-1998
7.1 The type of material can be represented by chemical symbols or one of the limiting symbols given below. These symbols should be drawn in a rectangle. When these symbols are used in combination with other symbols, the rectangle can be omitted. If necessary, the material symbols given in GB4458.1 can be used. No.
02-07-01
02-07-02
02-07-03
02-07-04
02-07-05
02-07--06
02-07-07
Effect or correlation
02-08-02
02-08-03
Graphic symbol
Graphic symbol
Material, unregulated Fixed type
Solid materials
Liquid materials
Gaseous materials
Electret materials
Semiconductor materials
Insulator materials
Thermal effects
Electromagnetic effects
Magnetostrictive effects
02-08-04
02-08-05
02-08-06
02-08-07
Graphical symbols
GB/T 4728.2
Magnetic field effects or magnetic field correlation
Time delay
Semiconductor effects
Coupling effects with electrical isolation
9.1 Arrow pointing - A symbol indicating that the device represented by the symbol reacts to the indicated type of radiation. 9.2 An arrow pointing away from a symbol indicates that the device represented by the symbol emits the indicated type of radiation. 9.3 An arrow within a symbol indicates that it has radiation source number
02-09-01
02-09-02
Graphic symbol
Non-ionizing electromagnetic radiation, such as radio waves or visible light
If the source and target are marked, the arrow points from the source to the targetSource
If there is a target but the source is not clearly indicated, the arrow points to the lower right
If the target is not clearly marked, the arrow points to the upper rightNon-ionizing relative radiation (such as coherent light)17
02-09-03
02-09-04
02-09-05
10Signal waveform
Graphic symbol
GB/T 4728.2—1998
Ionizing radiation
If it is necessary to identify the specific type of ionizing radiation, the following symbols or letters may be used:
Alpha particle
β-—Beta particle
—ray
Unary muon
Kaon
From muon
-X-ray
Nonionizing bidirectional electromagnetic radiation, such as that produced by radar or optically controlled relays with mirror reflectorsNonionizing bidirectional coherent radiation
10.1 Each symbol represents an ideal shape of a waveform. Serial number
02-10-01
02-10-02
02-1003
02-10-04
02-10-05
Graphic symbol
Positive pulse
Negative pulse
AC pulse
Positive step function
Negative step function2-1998
One-way transmission
One-way flow
For example, energy, signal, information
Simultaneous bidirectional transmission
Send and receive simultaneously
Non-simultaneous bidirectional transmission
Alternate sending and receiving
When used in combination with other symbols, the meaning of the arrow is clear, and the small black dot can be omitted, see symbol 10-06-04
When used in combination with other symbols, the meaning of the arrow is clear, and the small black dot can be omitted, see symbol 10-06-03
Energy output from busbar (busbar)
Energy input to busbar (busbar)
Bidirectional energy flow
When the characteristic value is greater than the set value, the action can also be seen in GB10066.3
When the characteristic value is less than the set value, the action can also be seen in GB 10066. 3
Action when the characteristic value is greater than the high setting value or less than the low setting value
Action when the characteristic value is equal to zero
Action when the characteristic value is approximately equal to zero
Material type
GB/T4728.2-1998
7.1 The type of material can be represented by chemical symbols or one of the limiting symbols given below. These symbols should be drawn in a rectangle. When these symbols are used in combination with other symbols, the rectangle can be omitted. If necessary, the material symbols given in GB4458.1 can be used. No.
02-07-01
02-07-02
02-07-03
02-07-04
02-07-05
02-07--06
02-07-07
Effect or correlation
02-08-02
02-08-03
Graphic symbol
Graphic symbol
Material, unregulated Fixed type
Solid materials
Liquid materials
Gaseous materials
Electret materials
Semiconductor materials
Insulator materials
Thermal effects
Electromagnetic effects
Magnetostrictive effects
02-08-04
02-08-05
02-08-06
02-08-07
Graphical symbols
GB/T 4728.2
Magnetic field effects or magnetic field correlation
Time delay
Semiconductor effects
Coupling effects with electrical isolation
9.1 Arrow pointing - A symbol indicating that the device represented by the symbol reacts to the indicated type of radiation. 9.2 An arrow pointing away from a symbol indicates that the device represented by the symbol emits the indicated type of radiation. 9.3 An arrow within a symbol indicates that it has radiation source number
02-09-01
02-09-02
Graphic symbol
Non-ionizing electromagnetic radiation, such as radio waves or visible light
If the source and target are marked, the arrow points from the source to the targetSource
If there is a target but the source is not clearly indicated, the arrow points to the lower right
If the target is not clearly marked, the arrow points to the upper rightNon-ionizing relative radiation (such as coherent light)17
02-09-03
02-09-04
02-09-05
10Signal waveform
Graphic symbol
GB/T 4728.2—1998
Ionizing radiation
If it is necessary to identify the specific type of ionizing radiation, the following symbols or letters may be used:
Alpha particle
β-—Beta particle
—ray
Unary muon
Kaon
From muon
-X-ray
Nonionizing bidirectional electromagnetic radiation, such as that produced by radar or optically controlled relays with mirror reflectorsNonionizing bidirectional coherent radiation
10.1 Each symbol represents an ideal shape of a waveform. Serial number
02-10-01
02-10-02
02-1003
02-10-04
02-10-05
Graphic symbol
Positive pulse
Negative pulse
AC pulse
Positive step function
Negative step function1Each symbol represents an ideal shape of a waveform. Serial number
02-10-01
02-10-02
02-1003
02-10-04
02-10-05
Graphic symbol
Positive pulse
Negative pulse
AC pulse
Positive step function
Negative step function1Each symbol represents an ideal shape of a waveform. Serial number
02-10-01
02-10-02
02-1003
02-10-04
02-10-05
Graphic symbol
Positive pulse
Negative pulse
AC pulse
Positive step function
Negative step function
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