GB/T 11918.4-2014 English PDF (GBT11918.4-2014)

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GB/T 11918.4-2014: Plugs, socket-outlets and couplers for industrial purposes -- Part 4: Switched socket-outlets and connectors with or without interlock
GB/T 11918.4-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.120.30
K 30
Plugs, socket-outlets and couples for industrial
purposes - Part 4. Switched socket-outlets and
connectors with or without interlock
(IEC 60309-4.2012, MOD)
ISSUED ON. JUNE 24, 2014
IMPLEMENTED ON. JANUARY 22, 2015
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 4 
1  Scope ... 6 
2  Normative references ... 6 
3  Terms and definitions ... 7 
4  General ... 11 
5  Standard ratings ... 11 
6  Classification ... 11 
7  Marking ... 12 
8  Dimensions ... 14 
9  Protection against electric shock ... 15 
10  Provision for earthing ... 16 
11  Terminals ... 16 
12  Interlocks, switches and their components ... 16 
13  Resistance to ageing of rubber and thermoplastic material ... 21 
14  General construction ... 21 
15  Construction of socket-outlets ... 21 
16  Construction of plugs and connectors ... 21 
17  Construction of appliance inlets ... 21 
18  Degrees of protection ... 21 
19  Insulation resistance and dielectric strength ... 22 
20  Breaking capacity ... 22 
21  Normal operation ... 22 
22  Temperature rise ... 22 
23  Flexible cable and their connection ... 24 
24  Mechanical strength ... 24 
25  Screws, current-carrying parts and connections ... 25 
26  Creepage distances, clearances and distances through sealing
compound ... 25 
27  Resistance to heat, fire and tracking ... 25 
28  Corrosion and resistance to rusting ... 26 
29  Conditional short-circuit current withstand test ... 26 
Foreword
GB/T 11918 Plugs, socket-outlets and couplers for industrial purposes is planed to be
divided into 4 parts.
— Part 1. General requirements;
— Part 2. Dimensional compatibility and interchangeability requirements for pin and
contact - tube accessories;
— Part 3. (name to be determined);
— Part 4. Switched socket-outlets and connectors with or without interlock.
This Part is Part 4 of GB/T 11918.
This Part is drafted in accordance with the rules specified in GB/T 1.1-2009.
This Part uses re-drafting method to modify and adopt IEC 60309-4.2012 Plugs,
socket-outlets and couplers for industrial purposes - Part 4. Switched socket-outlets and
connectors with or without interlock.
Technical differences between this Part and IEC 60309-4.2012, and the reasons, are as
follows.
— For normative references, this Part makes adjustments of technical difference, so as
to adapt to the technical requirements of China. Such adjustments are collectively
reflected in Chapter 2 “Normative References”; the detailed adjustments are as
follows.
• Replace IEC 60617-DB.2001 with GB/T 4728 (all parts) Graphical symbols for
electrical diagrams [IEC 60617 DB (all parts);
• Replace IEC 60417-DB.2002 with GB/T 5465 (all parts) Graphical symbols for
electrical equipment [IEC 60417 DB (all parts)];
• Replace IEC 60947-1.2004 with GB 14048.1 Low-voltage switchgear and
controlgear - Part 1. General rules (GB/T 14048.1-2012, IEC 60947-l.2011,
MOD);
• Replace IEC 60947-5- 1.2003 with GB 14048.5 Low-voltage switchgear and
controlgear - Part 5-1. Control circuit devices and switching element -
Electromechanical control circuit devices (GB 14048.5-2008, IEC
60947-5-1.2003, MOD);
• Add a supplement to GB 14048.3 Low-voltage switchgear and controlgear - Part
3. Switches, disconnectors, switch-disconnectors and fuse-combination units
(GB 14048.3-2008, IEC 60947-3.2005, IDT).
— Add Chinese mark of off/on position in 7.2;
— Delete IEC 60947-3 and the symbols from the column 7.2 “Switches”.
This Part makes the editorial changes as follows.
— Add “this Part of GB/T 11918 specifies the technical requirements of plugs,
socket-outlets and couplers for industrial purposes with or without interlock, such as
protection against electric shock, interlocking, switches and elements, structures,
mechanical strength and electric properties” in Chapter 1;
— Exchange the orders of Chapter 3 and Chapter 2 of IEC 60309-4.2012, that is,
make the “Normative References” as Chapter 2 and the “Terms and Definitions” as
Chapter 3;
— For the convenience of reference, notes are given to the definitions 3.103, 3.103.1,
3.103.1.1, 3.103.1.1.1, 3.103.1.2, 3.104, 3.105, 3.107; the serial numbers of the
definitions in GB14048 are supplemented;
— The text of this Part adopts the definitions of actuators and position indicators. For
the convenience of reference, this Part cites the definitions given in GB 14048, and
adds 3.103.1.1.2 “Actuators” and 3.103.1.1.3 “Position indicators”.
— Delete the titles of 12.7 and 12.8;
— Add the title of Table 11 “Test Current and Cross-sectional Area of Conductors of
Temperature Rise Test”;
— As GB/T 11918.1 adjusts the serial numbers of the Tables in IEC 60309-1, the
numbers of the tables cited in this Part from GB/T 11918.1 are revised accordingly.
Table 11 in Chapter 22 and Table 8 in 24.102.
This Part was proposed by China Electrical Equipment Industrial Association.
This Part shall be under the jurisdiction of National Electrical Accessory Standardization
Technical Committee (SAC/TC 67).
Drafting organizations of this Part. China National Electric Apparatus Research Institute
Co., Ltd., Hangzhou HONYAR Electrical Co., Ltd., Bull Group Co., Ltd., Nanjing
Mennekes Electric Appliances Co. Ltd., Shantou Dongya Electrical Appliances Factory,
Yuehua Holding Group Co., Ltd., MIG Technology Inc., Guangdong Meidi lighting
electrical Appliance Manufacturing Co., Ltd., Guangdong Meidi Lighting Electrical
Appliance Manufacturing Co., Ltd., Beijing Zhong-Ke Clamber El Ectronic Technology Co.,
Ltd., Vkan Certification and Testing Co., Ltd., Clipsal Manufacturing (HuiZhou) limited
(Shenzhen branch), Beijing Gurong Technology Co., Ltd., Guangzhou Panyu Tianhong
Industrial Development Co. Ltd., and Nanjing Kangni Technology Industrial Co. Ltd.
Main drafters of this Part. Cai Jun, Ju MingHua, Ding Hanhui, Jin Feng, Ruan Liping,
Wang Chaosheng, Huang Jun, Dai Jianguo, Shao Jing Jiang, Yuan Qu, Gong Zhilei, Liu
Weimin, Li Dajian, Ding Li, Wu Ming, Luo Shiming, Huang Shunqiin, and Cai Yingfeng.
Plugs, socket-outlets and couples for industrial purposes
- Part 4. Switched socket-outlets and connectors with or
without interlock
1 Scope
Chapter 1 of GB/T 11918.1-2014 is applicable, after it is modified as follows.
Paragraphs 1 and 2 are replaced with the following contents.
This Part of GB/T 11918 defines the technical requirements of plugs, socket-outlets and
couplers for industrial purposes with or without interlock, such as protection against
electric shock, interlocking, switches and elements, structures, mechanical strength and
electric properties.
This Part applies to independent products composed of a socket or coupler in conformity
with GB/T 11918.1 and a switchgear combined in the same housing at a rated operational
voltage not more than 1000V DC or AC, 50Hz and a rated current not more than 800A for
indoor or outdoor use and for industrial purpose.
After paragraph 2, add.
These accessories are only intended to be installed by trained (electrical) persons (GB/T
2900.73-2008, definition 195-04-02) or skilled persons (GB/T 2900.73-2008, 195-04-01).
These products may incorporate an interlock a...