GB/T 11918.1: Evolution and historical versions
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(Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 1: General requirements)
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| GB/T 11918.1-2014 | English | 145 |
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Plugs, socket-outlets and couplers for industrial purposes -- Part 1: General requirements
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Industrial plugs and sockets and couplers -- Part 1: General requirements
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Plugs, socket-outlets and couplers for industrial purpose--General requirement
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Basic data | Standard ID | GB/T 11918.1-2025 (GB/T11918.1-2025) | | Description (Translated English) | (Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 1: General requirements) | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-05-01 | | Older Standard (superseded by this standard) | GB/T 11918.1-2014 | | Issuing agency(ies) | State Administration for Market Regulation; Standardization Administration of China | GB/T 11918.1-2014: Plugs, socket-outlets and couplers for industrial purposes -- Part 1: General requirements
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Plugs, socket-outlets and couplers for industrial purposes - Part 1. General requirements
ICS 29.120.30
K30
National Standards of People's Republic of China
Replace GB/T 11918-2001
Industrial plugs and sockets and couplers
Part 1. General requirements
Plugs, socket-outletandcouplersforindustrialpurposes-
Part 1. Generalrequirements
(IEC 60309-1.2012, MOD)
Published on.2014-06-24
2015-01-22 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Content
Foreword V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 General 5
5 standard rating 6
6 Category 6
7 logo 7
8 size 9
9 protection against electric shock 10
10 Grounding measures 10
11 terminals and ends 11
12 interlocking device and holding device 20
13 Weathering resistance of rubber and thermoplastic materials 20
14 General structure 21
15 socket structure 21
16 Plug and connector construction 22
17 Structure of the appliance input socket 23
18 degree of protection 23
19 Insulation resistance and electrical strength 24
20 breaking capacity 25
21 Normal operation 26
22 temperature rise 27
23 flexible cables and their connections 29
24 Mechanical strength 33
25 screws, current-carrying parts and connections 36
26 Creepage distance, clearance and piercing sealant distance 37
27 Heat, flame and tracking resistance 39
28 Corrosion and rust proof 40
29 Limit short-circuit current withstand test 40
30 Electromagnetic Compatibility 41
Appendix A (Normative) Guidance and instructions for test equipment 55
Appendix B (informative) List of chapters requiring repeated testing 61
Reference 62
Figure 1 Schematic diagram of the use of electrical accessories 42
Figure 2 Standard test finger 43
Figure 3 Blank 43
Figure 4 Blank 43
Figure 5 Breaking capacity and normal operation test circuit diagram 44
Figure 6 Cable fixing component test device 45
Figure 7 Impact test device (see Appendix A) 45
Figure 8 Configuration of the mechanical strength test of the plug and connector 46
Figure 9 bending test device 46
Figure 10 Blank 47
Figure 11 Blank 47
Figure 12 Blank 47
Figure 13 Gauge for interposability of unprocessed round conductors for inspection of the maximum specified cross-sectional area 47
Figure 14 Terminal Example 48
Figure 15 Equipment test configuration 50
Figure 16 Test circuit for verifying the short-circuit current withstand capability of a single-phase ac or dc of a two-pole device. Figure 51
Figure 17 Test circuit 52 for verifying the short-circuit current withstand capability of a three-pole device
Figure 18 Test circuit 53 for verifying the short-circuit current withstand capability of a quadrupole device
Figure 19 Schematic diagram of the bending test 54
Figure A.1 Impact Test Set - Pendulum Assembly 56
Figure A.2 Impact test device --- pendulum mass (quantity. 4) 57
Figure A.3 Impact test device -- pendulum shaft end 58
Figure A.4 Impact test device --- pendulum anvil 58
Figure A.5 Impact test device --- pendulum shaft 59
Figure A.6 Impact test device -- pendulum pivot 59
Figure A.7 Impact test device rear plate and mounting plate 60
Table 1 rated current preferred value 6
Table 2 Shell color corresponding to the rated working voltage 9
Table 3 Connectable conductor size 12
Table 4 Force of bending test 15
Table 5 Bending value of copper conductor under mechanical load test 17
Table 6 tensile test value 18
Table 7 Test current value of voltage drop test 19
Table 8 Test voltage 25
Table 9 Breaking capacity 26
Table 10 Normal operation 27
Table 11 Test current and conductor cross-sectional area of the temperature rise test 28
Table 12 Type and nominal cross-sectional area of the flexible cable 29
Table 13 Cable outer diameter approximation 31
Table 14 Tensile and Torque Values Subjected to the Cable 32
Table 15 Impact Energy 34
Table 16 Force applied by heavy objects 35
Table 17 Force applied to the wrench 35
Table 18 Torque value for inspection 36
Table 19 Creepage distance, clearance and punch-through sealant distance 38
Table A.1 Impact test release angle 57
Foreword
GB/T 11918 "Industrial plugs and sockets and couplers" plan is divided into four parts.
--- Part 1. General requirements;
--- Part 2. Dimensional compatibility and interchangeability requirements for electrical accessories with latches and sockets;
--- Part 3. (name to be determined);
--- Part 4. Sockets and connectors with or without interlocks.
This part is the first part of GB/T 11918.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 11918-2001 "Industrial plugs and sockets and couplers - Part 1. General requirements".
Compared with GB/T 11918-2001, the main changes in this section are as follows.
--- The rated working voltage in Chapter 1 was changed from 690V to 1000V, and the rated current was changed from 250A to 800A;
--- Chapter 1 clarifies that these attachments are intended only to be installed by trained or skilled personnel;
--- Chapter 1 supplements the scope of electrical accessories for use with screwless terminals or insulated piercing terminals;
--- Chapter 3 added 3.18.7 screwless terminal and 3.18.8 insulation piercing terminal definition;
--- According to the definition given in GB/T 11918.4-2014 3.103.3, modified the definition of 3.8 integral switchgear;
---4.1 clarifies that the minimum degree of protection should be IP23; and the plugs, sockets, appliance input sockets and connectors used together
Combination of requirements;
---4.2.1 relevant provisions for components or components;
---4.2.4 Added the requirement to perform a 11.1.4 test on a new set of additional samples;
---5.1 increase 750V and 1000V;
--- 5.2 series I increase 315A, 400A, 630A, 800A, series II increase 300A, 350A, 500A, 600A, and increase
Added a comment;
--- Table 1 added "Recommended use of Series I in China.";
---6.1.2 modified to be classified according to the degree of protection according to GB 4208;
--- Chapter 6 added 6.1.6, 6.1.7, 6.1.8;
---7.1 adds the requirement to identify the number of this standard; and stipulates. the number of this standard can be marked on the product or packaging unit;
---7.6 gives the ingredients of the recommended gasoline;
Table 2 of ---7.7 gives the color of the shell corresponding to the rated working voltage of 500V~1000V;
--- Chapter 7 added 7.8, 7.9, 7.10;
---8.1 added the comment "GB/T 11918.2 gives some standard loose-leaf.";
---8.2 adds conditions that allow the connection of a single-phase or three-phase plug into a three-phase neutral socket;
--- Table 3 adds 315A, 400A, 630A, 800A connectable conductor size;
--- Chapter 11 has been re-written, adding the requirements for threaded terminals, screwless terminals, insulated piercing terminals (IPT) and related
test;
--- Chapter 12 clarifies that the interlocking requirements are checked according to GB/T 11918.4;
---15.8 is modified to the requirements of the socket with rated working voltage higher than 50Va.c. or 120Vd.c.
---16.9 is modified to the requirements of plugs and connectors with rated operating voltages exceeding 50Va.c. or 120Vd.c.
---17.3 Amend to the requirements of the appliance input socket with rated working voltage higher than 50Va.c. or 120Vd.c.
---18.2 increases the rule when the first feature number is 3 or 4 and the degree of protection is less than or equal to IPX4;
---18.3 and 18.4 contents are deleted;
--19.3 Three notes to increase the electrical strength test;
--- Table 12 according to IEC 60245-4.2011 on the cable model has been increased or decreased;
--- Chapter 20 deletes the description of the metal brackets for electrical accessories with rated voltages of 380V~415V;
--- Table 9 added the breaking capacity of 315A, 400A, 630A, 800A;
--- Chapter 21 adds dry cleaning and maintenance operations after every 500 strokes, and specifies the plugs for electrical accessories during the test or
The insert sleeve must not be calibrated, lubricated or otherwise adjusted;
--- Table 10 added the number of normal operation cycles of 315A, 400A, 630A, 800A;
--- Table 11 added the test current of the temperature rise test of 315A, 400A, 630A, 800A and the cross-sectional area of the conductor;
--- Chapter 22 increases the duration of the temperature rise test with a rated current exceeding 250A;
--- Table 12 adds the nominal cross-sectional area corresponding to 315A, 400A, 630A, 800A;
--- Table 13 adds the approximate cable outer diameter corresponding to 315A, 400A, 630A, 800A;
--- Table 14 adds the tensile and torque values experienced by the cables corresponding to 315A, 400A, 630A, and 800A;
--- Table 15 added the impact energy corresponding to 315A, 400A, 630A, 800A;
--- Table 16 deletes the column "greater than 30A";
--- Table 19 added "500V to 690V", "690V to 1000V" creepage distance, clearance and punch through
Sealant distance
---27.3 Direct reference to GB/T 5169.21, simplifying the description;
---27.5 Direct reference to GB/T 4207, simplifying the description;
--- Figure 13 added conductor cross-sectional area 185mm2, 240mm2, 300mm2, 400mm2, 500mm2, 630mm2 phase
The gauge of the insertability of an untreated round conductor to check the maximum specified cross-sectional area;
--- Added Appendix B.
This part uses the redrafting method to modify the use of IEC 60309-1.2012 "Industrial plugs and sockets and couplers Part 1. General
begging".
The technical differences between this part and IEC 60309-1.2012 and their reasons are as follows.
---About the normative reference documents, this part has made technical adjustments to adapt to China's technical conditions, adjustments
The situation is reflected in Chapter 2, “Regulatory Citations”, and the specific adjustments are as follows.
● Replace the IEC 60228.1978 with the conductor of the GB/T 3956-2008 cable (IEC 60228.2004, IDT);
● Replace the IEC 60529.1989 with the GB 4208-2008 enclosure protection class (IP code) (IEC 60529.2001, IDT);
● Use GB/T 5023 (all parts) PVC insulated cables with rated voltages of 450/750V and below [IEC 60227 (all)
Part)] instead of IEC 60227 (all parts);
● GB/T 5169.11-2006 Electrical and electronic products - Fire hazard testing - Part 11. Glowing wire/hot wire basic test
The glow wire flammability test method (IEC 60695-2-11.2000, IDT) of the finished product replaces IEC 60695-2-1.1994;
● GB/T 5169.21 Electrical and electronic products - Fire hazard testing - Part 21. Abnormal thermal ball pressure test
(GB/T 5169.21-2006, IEC 60695-10-2.2003, IDT) instead of IEC 60695-10-2;
● Use GB/T 9797 metal cover nickel-chromium and copper-nickel-chromium plating layer (GB/T 9797-2005, ISO 1456.
2003, IDT) replaces ISO 1456;
● Use zinc plating on GB/T 9799 metal-clad steel (GB/T 9799-1997, eqvISO 2081.1986)
For ISO 2081;
● GB/T 11918.4 Industrial plugs and couplers - Part 4. Sockets and connectors with or without interlocks
(GB/T 11918.4-2014, IEC 60309-4.2012, MOD) instead of IEC 60309-4;
● Technical specification and test method for GB/T 12599 metal-clad tin plating layer (GB/T 12599-2002,
ISO 2093.1986, MOD) instead of ISO 2093;
● Replace the low voltage fuses of GB 13539.1-2008 Part 1. Basic requirements (IEC 60269-1.2006, IDT)
IEC 60269-1.1986;
● GB/T 13539.2-2008 Low-voltage fuses - Part 2. Supplementary requirements for fuses used by
For industrial fuses) Standardized fuse system examples A to I (IEC 60269-2.2006, IDT) instead of IEC 60269-
2.1986;
● GB/T 16935.1-2008 Insulation of equipment in low-voltage systems - Part 1. Principles, requirements and tests
(IEC 60664-1.2007, IDT) replaces IEC 60664-1.1992;
● Replace the IEC 60320 with GB 17465 (all parts) household and similar appliance couplers [IEC 60320 (all parts)]
(all parts).
--- The identification of this standard number. With reference to other standard requirements and related regulations, 7.1 has added requirements for identifying this standard number.
--- According to IEC 60245-4.2011, the corresponding wire type is added or subtracted in Table 12 and Table 13.
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
--- GB/T 5013.4-2008 Rubber insulated cables of rated voltages up to and including 450 750V. Part 4. cords and flexible cables
(IEC 60245-4.2004, IDT).
This section has made the following editorial changes.
--- Added in Chapter 1 "This part of GB/T 11918 specifies the structure and mechanical properties of industrial plugs and sockets and couplers.
Technical requirements such as energy and electrical performance. ";
---Transfer the order of Chapters 3 and 2 of IEC 60309-1.2012, that is, the "normative reference document" is Chapter 2, "Terminology and
Definition" is Chapter 3;
--- Move the description of the standard structure in the introduction to IEC 60309-1.2012 to the preface of this section. And delete the IEC introduction;
--- Modified the guidance of "terms and definitions";
--- To ensure the consistency defined by GB/T 11918, 3.8 integral switchgear according to 3.103.3 of GB/T 11918.4-2014
Added;
--- For ease of reference, 8.1 added a note. "GB/T 11918.2 gives some standard loose-leaf pages.";
--- Change IEC 60309-1.2012 Table 4-1 to Table 4, Table 4-2 to Table 5, Table 4-3 to Table 6, Table 4-4 to Table 7, after
The serial number of the surface is postponed;
--- Refer to other electrical accessories standards for electrical strength test requirements, 19.3 supplemented Note 2, Note 3, Note 4;
--- For Appendix B "List of chapters requiring repeated tests", according to the IEC 60309-1 version corresponding to GB/T 11918-2001
Condition has been adjusted;
--- Added references.
This part was proposed by China Electrical Equipment Industry Association.
This part is under the jurisdiction of the National Electrical Equipment Standardization Technical Committee (SAC/TC67).
This section was drafted by. China Electric Apparatus Research Institute Co., Ltd., Hangzhou Hongyan Electric Co., Ltd., Shantou East Asia Electric Appliance Factory, Guangdong
Mingjia Technology Co., Ltd., Yuehua Holding Group Co., Ltd., Zhongshan Weipu Electric Co., Ltd., Beijing Breakthrough Electric Co., Ltd.
Du Ruilian Electric Co., Ltd., Bull Group Co., Ltd., Ningbo Weier Electric Co., Ltd., Zhejiang Hengtai Electric Co., Ltd., Nanjing Mann
Nikes Electric Co., Ltd., Shanghai Electric Tools Research Institute, Weikai Testing Technology Co., Ltd., Qisheng Industrial (Huizhou) Co., Ltd. Shenzhen Branch
Company, Feidiao Electric Group Co., Ltd., Guangzhou Panyu Tianhong Industrial Development Co., Ltd., Nice Electric (Jiaxing) Co., Ltd., Nanjing Connie
Technology Industrial Co., Ltd.
The main drafters of this section. Cai Jun, Ding Hanhui, Jin Feng, Huang Jun, Wang Chaosheng, Chen Zanhui, Zhu Songtao, Wang Huayi, Yan Liping, Li Hongwen,
Luo Deyuan, Yan Minghua, Zhang Yuchang, Yuan Qu, Gong Zhilei, Zheng Wei, Li Dajian, Jiang Jiulong, Ding Li, Li Lixin, Luo Shiming, Cai Yingfeng, Zhang Lirong.
The previous versions of the standards replaced by this section are.
---GB/T 11918-1989, GB/T 11918-2001.
Industrial plugs and sockets and couplers
Part 1. General requirements
1 Scope
This part of GB/T 11918 specifies the technical requirements for the structure, mechanical properties and electrical performance of industrial plugs and sockets and couplers.
This section applies to the main working industrial, indoor and outdoor use rated working voltage does not exceed 1000Vd.c. or ac and
500Hza.c., plugs and sockets, cable couplers and appliance couplers with rated currents up to 800A.
These attachments are only intended to be trained by [electrical] personnel (GB/T 2900.73-2008, definition 195-04-02) or skilled [electrical]
The technician (GB/T 2900.73-2008, definition 195-04-01) is installed and used.
The preferred ratings listed do not exclude other ratings.
This section applies to plugs and sockets, cable couplers and appliances used when the ambient temperature is usually between -25 ° C and 40 ° C.
Coupler (hereinafter referred to as electrical accessory). These electrical accessories are intended to be connected only to copper or copper alloy cables.
This section applies to series I with rated current not higher than 32A, series II rated current not higher than 30A, with unthreaded terminals or
Electrical accessories for insulated piercing terminals.
These electrical accessories are not excluded for use on construction sites or for agricultural, commercial or domestic use.
Sockets or appliance input sockets that are installed in electrical equipment or that are fixed to electrical equipment are within the scope of this section. This section also applies
For electrical accessories intended for use in extra low voltage devices.
This section does not apply to electrical accessories used by major writers and similar general purposes.
Additional requirements may be required in special locations, such as on board ships or in locations subject to explosion.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 3956-2008 Conductor for cables (IEC 60228.2004, IDT)
GB/T 4207-2012 Determination of the tracking resistance index of solid insulating materials and the method of measuring the electrical tracking index (IEC 60112.2009,
IDT)
GB 4208-2008 Shell protection class (IP code) (IEC 60529.2001, IDT)
GB/T 5023 (all parts) PVC insulated cables with rated voltages of 450/750V and below [IEC 60227 (all parts)]
GB/T 5169.11-2006 Electrical and electronic products - Fire hazard testing - Part 11. Glowing wire/hot wire basic test method
Glowing flammability test method for products (IEC 60695-2-11.2000, IDT)
GB/T 5169.21 Fire hazard testing for electric and electronic products - Part 21. Normal heat ball test (GB/T 5169.21-
2006, IEC 60695-10-2.2003, IDT)
GB/T 9797 metal-clad nickel-chromium and copper-nickel-chromium plating (GB/T 9797-2005, ISO 1456.2003, IDT)
GB/T 9799 metal and other inorganic coatings on steel treated zinc plating (GB/T 9799-2011,
ISO 2081.2008, IDT)
GB/T 11918.4 Plugs and couplers for industrial use - Part 4. Sockets and connectors with or without interlocking switch
(GB/T 11918.4-2014, IEC 60309-4.2012, MOD)
GB/T 12599 Metallic coating tin plating layer technical specification and test method (GB/T 12599-2002, ISO 2093.
1986, MOD)
Low voltage fuses - Part 1. Basic requirements (IEC 60269-1.2006, IDT)
GB/T 13539.2-2008 Low-voltage fuses - Part 2. Supplementary requirements for fuses used by
Industrial fuses) Standardized fuse system examples A to I (IEC 60269-2.2006, IDT)
GB/T 16935.1-2008 Insulation of equipment in low-voltage systems - Part 1. Principles, requirements and tests (IEC 60664-1.
2007, IDT)
GB 17465 (all parts) Couplers for household and similar appliances [IEC 60320 (all parts)]
Household and similar general purpose plugs and sockets (Plugsandsocket-outletsfor) standardized by IEC 60083 IEC member states
DomesticandsimilargeneralusestandardizedinmembercountriesofIEC )
IEC 60245-4.2011 Rubber insulated cables of rated voltages up to and including 450 750 s. Part 4. cords and flexible cables (Rubber
Insulatedcablesofratedvoltagesuptoandincluding450/750V-Part 4.Cordsandflexiblecables)
3 Terms and definitions
The following terms and definitions apply to this document.
Note 1. Where the term “voltage” and “current” are used, they are all dc or ac rms values.
Note 2. The purpose of the electrical accessories is shown in Figure 1.
3.1
Plug and socket plugandsocket-outlet
The flexible cable can be connected to the fixed wiring device as needed, consisting of the following two parts.
3.1.1
Socket socket-outlet
The part that is intended to be installed with the fixed wiring or installed in the device.
The socket can also be mounted in the output circuit of the isolation transformer.
3.1.2
Plug plug
The part that is integral with a soft cable connected to the device or connector or that is intended to be directly connected to the flexible cable.
3.2
Cable coupler cablecoupler
A device that can connect two flexible cables as needed, consisting of the following two parts.
3.2.1
Connector connector
The portion of the flexible cable that is connected to the power source or that is intended to be connected to the cable.
Note. Generally, the arrangement of the contacts of the connector and the socket is the same.
3.2.2
Plug plug
The part that is integral with or intended to be connected to a flexible cable connected to the device or connector.
Note. The plug of the cable coupler is identical to the plug of the "plug and socket".
3.3
Appliance coupler appliancecoupler
A device that can connect a flexible cable to a device as needed, consisting of the following two parts.
3.3.1
Connector connector
The portion of the flexible cable that is connected to the power source or that is intended to be connected to the cable.
Note. Typically, the connector of the appliance coupler is identical to the connector of the cable coupler.
3.3.2
Appliance input socket applianceinlet
The part that is installed in the device, or that is fixed to the device, or that is intended to be fixed to the device.
Note. Generally, the arrangement of the contacts of the appliance input socket and the plug is the same.
3.4
Removable plug or connector rewirableplugorconnector
An electrical accessory of this construction with a replaceable flexible cable.
3.5
Non-rewirable plug or connector non-rewirableplugorconnector
An electrical accessory of this construction that does not separate the flexible cord from the electrical accessory without permanently disabling the electrical accessory.
3.6
Mechanical switch electrical mechanicalswitchingdevice
The switching device of one or more circuits is closed and disconnected by the action of the separable contacts.
3.7
Switched socket-outlet with switch
A socket that is equipped with an associated switching device to disconnect the power supply from the socket of the socket.
3.8
Integral switch electrical appliance integralswitchingdevice
Switching device that is structurally part of a socket or connector within the scope of this standard, and whether it is a switchgear or socket or
The connectors cannot be replaced independently.
3.9
Interlocking device interlock
Prevent the plug of the plug from being charged before the socket or connector is properly inserted, and prevent the plug from being pulled out or plugged when its plug is energized
The plug of the head is an uncharged electrical or mechanical device before being pulled out.
3.10
Hold device retainingdevice
A mechanical device that holds the plug or connector in a normal position and prevents it from being accidentally pulled out when the plug or connector is properly inserted.
3.11
Rated current ratedcurrent
The current specified by the manufacturer for the electrical accessories.
3.12
Insulation voltage insulationvoltage
The voltage value specified by the manufacturer for the electrical accessories, and the electrical strength test, clearance and creepage distance are determined by reference to this voltage.
3.13
Rated operating voltage ratedoperatingvoltage
The nominal voltage of the power supply to be used by the electrical accessory.
3.14
Basic insulation basicsulation
The electrical accessories are normally functioning and the insulation necessary for basic protection against electric shock.
3.15
Additional insulation supplementaryinsulation
Protective insulation protectiveinsulation
An independent insulation added to the basic insulation to ensure protection against electric shock in the event of failure of the basic insulation.
3.16
Double insulated doubleinsulation
Insulation consisting of both basic and additional insulation.
3.17
Reinforced reinforced insulation
An improved basic insulation with mechanical and electrical properties that provide the same level of protection against electric shock as double insulation.
3.18
Terminal
A conductive member used to connect a conductor to an electrical accessory.
3.18.1
Cylindrical terminal pilarterminal
Insert the conductor into the hole or slot and clamp the terminal below the end of the screw. The clamping pressure can be applied directly from the end of the screw or through
Applied by an intermediate clamp that is subjected to the end pressure of the screw body [see Figure 14a)].
3.18...
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