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GB/T 1985-2023: High-voltage alternating current disconnectors and earthing switches
Status: Valid GB/T 1985: Evolution and historical versions
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| GB/T 1985-2023 | English | 1959 |
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High-voltage alternating current disconnectors and earthing switches
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[GB/T 1985-2014] High-voltage alternating-current disconnectors and earthing switches
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Basic data | Standard ID | GB/T 1985-2023 (GB/T1985-2023) | | Description (Translated English) | High-voltage alternating current disconnectors and earthing switches | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K43 | | Classification of International Standard | 29.130.10 | | Word Count Estimation | 98,943 | | Date of Issue | 2023-09-07 | | Date of Implementation | 2024-04-01 | | Older Standard (superseded by this standard) | GB/T 1985-2014 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 1985-2023: High-voltage alternating current disconnectors and earthing switches---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.
ICS 29.130.10
CCSK43
National Standards of People's Republic of China
Replace GB/T 1985-2014
High voltage AC isolating switch and earthing switch
Published on 2023-09-07
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface Ⅶ
Introduction Ⅺ
1 Scope 1
2 Normative reference documents 1
3 Terms and Definitions 1
3.1 General terms and definitions 2
3.2 Final assembly of switchgear and control equipment2
3.3 Components of final assembly 2
3.4 Switchgear 2
3.5 Components of switchgear 3
3.6 Operation 5
3.7 Characteristic parameters 7
4 Normal and special conditions of use10
5 Rated 10
5.1 General 10
5.2 Rated voltage (Ur) 11
5.3 Rated insulation level (Ud, Up, Us) 11
5.4 Rated frequency (fr) 11
5.5 Rated continuous current (Ir) 11
5.6 Rated short-time withstand current (Ik) 11
5.7 Rated peak withstand current (Ip) 11
5.8 Rated short-circuit duration (tk) 12
5.9 Rated supply voltage of auxiliary and control circuits (Ua) 12
5.10 Rated frequency of auxiliary and control circuit supply voltage12
5.11 Rated pressure of compressed air source for controllable pressure systems12
5.12 Rated filling pressure/level for insulation and/or opening and closing12
5.101 Rated short-circuit point closing current (Ima) 12
5.102 Classification of short-circuit making ability of earthing switches12
5.103 Rated contact area 13
5.104 Rated terminal static mechanical load 14
5.105 Classification of mechanical life of isolating switches14
5.106 Classification of mechanical life of earthing switches15
5.107 Rated ice thickness 15
5.108 Rating of bus switching current of isolating switch 15
5.109 Classification and rating of earthing switch switching induced current capability16
5.110 Classification and rating of isolating switch’s ability to switch capacitive current17
5.111 Rating of the isolating switch's ability to switch small inductive currents18
6 Design and Structure18
6.1 Requirements for liquids in isolating and earthing switches18
6.2 Requirements for gases in disconnectors and earthing switches18
6.3 Grounding of isolating switches and earthing switches18
6.4 Auxiliary and control equipment and circuits18
6.5 Power operation 18
6.6 Energy storage operation 18
6.7 Operations that do not rely on non-locking (operations that do not rely on manpower or power) 19
6.8 Human-operated drives 19
6.9 Trip unit operation 19
6.10 Pressure/Level Indication19
6.11 Nameplate 19
6.12 Interlocking device 22
6.13 Position indication 22
6.14 Degree of protection provided by the enclosure22
6.15 Creepage distance of outdoor insulators 22
6.16 Gas and vacuum sealing 22
6.17 Hydraulic seals 22
6.18 Fire (flammability) 22
6.19 Electromagnetic compatibility (EMC) 22
6.20 X-ray emission 22
6.21 Corrosion 22
6.22 Filling pressure/level for insulation and/or opening and closing, operation22
6.101 Special requirements for earthing switches22
6.102 Requirements for the isolation break of the isolating switch 22
6.103 Mechanical strength 22
6.104 Operation of isolating switches and earthing switches - location of movable contact system and its indication and signaling devices 22
6.105 Maximum force for human operation (with or without dependence) 24
6.106 Dimensional tolerance 24
6.107 Earthing switches with the ability to make short-circuit currents24
7 Type test 24
7.1 General 24
7.2 Insulation test 27
7.3 Radio interference voltage test (RIV) 29
7.4 Loop resistance measurement 29
7.5 Continuous current test 29
7.6 Short-time withstand current and peak withstand current tests 29
7.7 Protection level verification36
7.8 Sealing test 36
7.9 Electromagnetic compatibility test (EMC) 36
7.10 Additional tests of auxiliary and control circuits36
7.11 X-ray test of vacuum interrupter 36
7.101 Grounding switch short-circuit closing ability test 36
7.102 Operational and mechanical life tests 39
7.103 Operation under severe freezing conditions 44
7.104 Low and high temperature tests 46
7.105 Verification test for correct function of position indicating device 49
7.106 Test of bus switching current of isolating switch 49
7.107 Earthing switch opening and closing induced current test 52
7.108 Isolating switch switching capacitive current test 57
7.109 Isolating switch opening and closing small inductive current test 62
8 Factory test 63
8.1 General 63
8.2 Insulation test of main circuit 63
8.3 Testing of auxiliary and control loops 63
8.4 Measurement of main circuit resistance 64
8.5 Sealing test 64
8.6 Design inspection and appearance inspection 64
8.101 Mechanical operation test 64
8.102 Verification of ground function 64
9 Guidelines for Selection of Isolating Switches and Grounding Switches 65
9.1 General 65
9.2 Selection of rating 65
9.3 Cable interface 67
9.4 Sustained or temporary overload caused by changes in operating conditions 67
9.5 Environmental aspects 67
10 Information provided with inquiries, bids and orders (informative) 67
10.1 Overview 67
10.2 Information provided with inquiries and orders67
10.3 Information provided with the tender documents69
11 Transport, storage, installation, operation and maintenance rules 70
11.1 Overview 70
11.2 Conditions for transportation, storage and installation70
11.3 Installation 70
11.4 Run 70
11.5 Maintenance 70
12 Security 70
12.1 Overview 70
12.2 Manufacturer’s precautions70
12.3 Precautions for users 70
13 Impact of products on the environment 71
Appendix A (informative) This document is compared with the regulation number of IEC 62271-102.2022 72
Appendix B (informative) Technical differences between this document and IEC 62271-102.2022 and their reasons 74
Appendix C (informative) Rated insulation level of isolating switch for neutral point grounding of power transformer 77
Appendix D (informative) Required switching current capabilities of isolating switches and grounding switches78
Appendix E (Normative) Tolerance of test parameters for type testing 80
Appendix F (informative) Extension of type test validity 81
Appendix G (informative) Test voltage for the most unfavorable insulation position (minimum temporary electrical gap) when the earthing switch is operated 82
Appendix H (Normative) Alternative test methods for short-circuit current closing test 83
Reference 85
Figure 1 Position indication/position signaling device 23
Figure 2 Three-phase test arrangement of isolating switch and earthing switch 30
Figure 3 Ur >40.5kV, using soft or hard wires, isolating switch and earthing switch with horizontal isolation break
Single-phase test arrangement 32
Figure 4 Ur >40.5kV, using flexible conductors, single-column isolation switch with vertical isolation break (single-column earthing switch)
Single-phase test arrangement 33
Figure 5 Ur >40.5kV, using hard wires, single-column isolating switch with vertical isolation break (single-column earthing switch)
Single-phase test arrangement 34
Figure 6 The direction of the static contact is parallel to the support 40
Figure 7 The direction of the static contact is perpendicular to the support 41
Figure 8 Example of a single-column isolating switch (or single-column earthing switch) applying rated terminal mechanical load 42
Figure 9 Example of double-column isolating switch applying rated terminal mechanical load 42
Figure 10 Low temperature and high temperature test sequence 47
Figure 11 Example of test circuit for switching current test of switching busbar 51
Figure 12 Test circuit for switching electromagnetic induction current test 54
Figure 13 Test circuit for opening and closing electrostatic induction current test 55
Figure 14 Test circuit 59 of test mode 1
Figure 15 Typical voltage waveform (including VFT and FT components) 60
Figure 16 Test circuit 60 of test mode 2
Figure 17 Test circuit 61 of test mode 3
Figure D.1 Example of isolating switch with resistor 79
Table 1 Classification of short-circuit making ability of earthing switches12
Table 2 Recommended contact areas when static contacts are supported by flexible conductors13
Table 3 Recommended contact areas when static contacts are supported by hard wires13
Table 4 Recommended static mechanical loading of terminals14
Table 5 Classification of mechanical life of isolating switch15
Table 6 Classification of mechanical life of earthing switches15
Table 7 Rated bus conversion voltage of isolating switch 15
Table 8 Classification of grounding switch switching induced current capability16
Table 9 Rated induced current and voltage16
Table 10 Classification of isolating switch switching bus charging current capability17
Table 11 Standard values of rated bus charging current17
Table 12 Product information 19
Table 13 Type test 25
Table 14 Power frequency withstand voltage 28
Table 15 Closing time requirements38
Table 16 Invalid test 39
Table 17 Standard value of recovery voltage for breaking electromagnetic induction current test 54
Table 18 Capacitance (C1 value) of the test circuit for the switching electrostatic induction current test 56
Table 19 Test voltage for making and breaking tests58
Table 20 Number of tests 61
Table 21 Power frequency voltage test 63
Table A.1 Comparison of the regulation numbers of this document with IEC 62271-102.2022 72
Table B.1 Technical differences between this document and IEC 62271-102.2022 and their reasons 74
Table C.1 Rated insulation level of isolating switch for neutral point grounding of power transformer 77
Table D.1 Average impedance 78
Table E.1 Tolerances of test parameters for type testing 80
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 1985-2014 "High Voltage AC Isolating Switches and Grounding Switches". Compared with GB/T 1985-2014, except for the
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
---Deleted "temperature rise", "M0 level isolating switch", "M1 level isolating switch", "M2 level isolating switch", "E0 level grounding switch" and "E1 level
"Grounding switch" "E2 class grounding switch" "M0 class grounding switch" "M1 class grounding switch" "M2 class grounding switch" "Interlocking device"
Definitions such as "normal current", "rated value" and "impulse withstand voltage"; (see 3.1.103, 3.4.101.1,.2014 edition)
3.4.101.2, 3.4.101.3, 3.4.105.1, 3.4.105.2, 3.4.105.3, 3.4.105.4, 3.4.105.5, 3.4.105.6, 3.6.112,
3.7.103, 3.7.106, 3.7.109, etc.);
---Changed the definitions of "final assembly of switchgear and control equipment", "components of the final assembly", "inflection point" and "insulation level" (see 3.2,
3.3, 3.6.112, 3.7.105, etc.,.2014 version of 3.2, 3.3, 3.4.105.8, 3.7.107, etc.);
---Added "test product", "isolating switch with resistance", "isolating load switch", "position indicating device", "power transmission chain" and "position indication"
"Transmission chain", "Position signal transmission chain", "Connection point", "Stress limiting device", "Torque (force) control system", "Energy source", "Mechanical service life"
"Lightning impulse withstand voltage", "Operation impulse withstand voltage", "Busbar conversion current", "Busbar conversion voltage", "Electromagnetic induction current"
"flow", "electrostatic induction current", "opening and closing capacitive current", "capacitive current", "opening and closing bus charging current", "bus charging current", "instantaneous to ground"
Definitions such as "state voltage", "rated charging pressure for insulation and/or switching" and "minimum functional pressure for insulation and/or switching" (see
3.2.1, 3.4.105, 3.4.106, 3.5.108, 3.5.112, 3.5.113, 3.5.114, 3.5.115, 3.5.116, 3.5.117, 3.5.118,
3.6.113, 3.7.107, 3.7.108, 3.7.122, 3.7.123, 3.7.125, 3.7.126, 3.7.127, 3.7.128, 3.7.129, 3.7.130,
3.7.131, 3.7.132, 3.7.133, etc.);
---Modify "rated current and temperature rise" to "rated continuous current" (see 5.5, 4.5 of the.2014 version);
---Divide "rated pressure of compressed air source for controllable pressure systems" into "rated pressure of compressed air source for insulation and/or opening and closing" and
"Rated pressure of compressed air source for operation" (see 5.11.101 and 5.11.102);
---Modify "Classification of electrical life of grounding switch" to "Classification of short-circuit closing ability of grounding switch" (see 5.102,.2014 version
4.107);
---Changed the rated voltage range of the rated contact area in 5.103 (see Table 2 and Table 3, Table 1 and Table 2 of the.2014 version);
---Increased the rated value of ice coating thickness (see 5.107);
---Added a Class C grounding switch with the ability to switch inductive currents and gave standard values for rated inductive currents and voltages (see
Table 8 and Table 9);
---Added "grading of the isolating switch's switching and busbar charging current capabilities" (see Table 10);
---Change "Rating of small capacitive current switching capacity of isolating switch" to "Rating of small capacitive current switching capacity of air insulated isolating switch"
"Rating" (see 5.110.2, 4.108 of the.2014 edition);
---Changed the content of "Grounding of isolating switches and grounding switches" (see 6.3, 5.3 of the.2014 edition);
---Changed the content of "power operation" (see 6.5, 5.5 of the.2014 version);
---Change "operations that do not rely on manpower" to "operations that do not rely on non-locking (operations that do not rely on manpower or power)" (see 6.
7,2014 version 5.7);
---Added "human-operated driver" (see 6.8);
---Modify "low pressure and high pressure locking and monitoring devices" to "pressure/level indication" (see 6.10, 5.9 of the.2014 version);
---Changed the content of "nameplate" (see 6.11, 5.10 of the.2014 version);
---Changed the content of "interlocking device" (see 6.12, 5.11 of the.2014 version);
---Changed the content of "Special requirements for grounding switches" (see 6.101, 5.101 of the.2014 version);
---Changed the content of "Requirements for isolation break of isolating switch" (see 6.102,.2014 version of 5.102);
---Changed the content of "mechanical strength" (see 6.103, 5.103 of the.2014 version);
---Changed the content of "Position indication and position signal" (see 6.104.3, 5.104.3 of the.2014 version);
---Modify "maximum force allowed for human operation" to "maximum force (depending or not relying on) human operation" (see 6.105,.2014 edition
of 5.105);
---Changed the maximum force value for human operation "operations requiring more than one turn" (see 6.105.2,.2014 version of 5.105.2);
---The "Overview" and "Test Grouping" of "Type Test" have been changed, and the "Test Grouping" has been modified and merged into the "Overview" section (see
7.1.1, 6.1.1 and 6.1.2 of the.2014 edition);
---Changed the content of "Information contained in the type test report" (see 7.1.3, 6.1.4 of the.2014 version);
---Modify "the status of the isolating switch and the grounding switch during the insulation test" to "the layout of the equipment" (see 7.2.4, 6.2.4 of the.2014 version);
---Changed the content of "Criteria for passing the test" (see 7.2.5, 6.2.5 of the.2014 version);
---The "power frequency withstand voltage" table of the isolating switch during the insulation test has been changed, and the neutral point grounded and ungrounded conditions are not distinguished (see
Table 14, Table 7 of.2014 version);
---Changed the content of "Partial Discharge Test" (see 7.2.10, 6.2.10 of the.2014 version);
---Change "temperature rise test" to "continuous current test" (see 7.5, 6.5 of the.2014 edition);
---Changed the contents of the "general test conditions" for isolating switches and grounding switches during short-time withstand current and peak withstand current tests
(See 7.6.2.101, 6.6.2.101 of the.2014 edition);
---Change "Isolating switches and grounding switches with rated voltage 40.5kV and below" to "Isolating switches and grounding switches with Ur ≤ 40.5kV
"Earth switch", and the content has been modified (see 7.6.2.102, 6.6.2.102 of the.2014 version);
---Change "Isolating switches and grounding switches with rated voltage 72.5kV and above" to "Isolating switches and grounding switches with Ur >40.5kV
"Earth switch", and the content has been modified (see 7.6.2.103, 6.6.2.103 of the.2014 version);
---Deleted the content of "Performance of the isolating switch and grounding switch during the test" (see 6.6.4 of the.2014 version);
---Changed the content of "Status of the isolating switch and grounding switch after the test" (see 7.6.4, 6.6.5 of the.2014 version);
---Modify "X-ray test procedure of vacuum interrupter" to "X-ray test of vacuum interrupter", and modify the content
(See 7.11, 6.11 of the.2014 edition);
---Changed the content of "test voltage" in "Grounding switch short-circuit closing ability test" (see 7.101.4,.2014 version of 6.101.4);
---Changed the content of "operation and mechanical life test" (see 7.102,.2014 version of 6.102);
---Changed the content of "Operation under severe freezing conditions" (see 7.103,.2014 version of 6.103);
---Modify "Operation at Extreme Temperature" to "Low and High Temperature Test", and modify the content (see 7.104,.2014 edition
of 6.104);
---Changed the test requirements for "correct function verification test of position indicating device" (see 7.105,.2014 version of 6.105 and Appendix A);
---Added the standard value of recovery voltage for Class C grounding switch breaking electromagnetic induction current test (see Table 17);
---Added the capacitance (C1 value) of the test circuit for the Class C grounding switch opening and closing electrostatic induction current test (see Table 18);
---Change "small capacitive current switching test" to "isolating switch switching capacitive current test" (see 7.108 and Appendix C,.2014 edition
6.108, Appendix F and Appendix H);
---Changed the "Overview" content of "Factory Test" (see 8.1, 7.1 of the.2014 version);
---Changed the application position and grounding position of the power frequency voltage in the "factory test" of the isolating switch "main circuit insulation test" (see
Table 21, Table 10 of the.2014 version);
---Changed the content of "mechanical operation test" of "factory test" (see 8.101,.2014 version of 7.101);
---Added the "Verification of Grounding Function" content of "Factory Test" (see 8.102);
---Deleted the contents of "seismic conditions" and "use in high altitude areas" (see 8.102.8 and 8.102.9 of the.2014 version);
--- Added the contents of "cable interface aspects" and "continuous or temporary overload caused by changes in operating conditions" (see 9.3, 9.4);
---Changed the content of "Information provided with inquiries, bids and orders (informative)" (see Chapter 10, Chapter 9 of the.2014 edition);
---Changed the content of "security" (see Chapter 12, Chapter 11 of the.2014 edition);
---Added normative appendix E and normative appendix F;
---Deleted the.2014 version of normative appendix A, appendix B, appendix C, appendix E and appendix F.
This document is modified to adopt IEC 62271-102.2022 "High-voltage switchgear and control equipment - Part 102.AC isolating switches and connections"
Ground switch".
Compared with IEC 62271-102.2022, this document has many structural adjustments. Comparison of structure number changes between two files 1
See Appendix A for the list.
Compared with IEC 62271-102.2022, there are many technical differences between this document and the clauses involved.
Vertical single lines (|) are marked. A list of these technical differences and their causes is provided in Appendix B.
The following editorial changes have been made to this document.
---In order to be consistent with my country's standard system, the name of this document is changed to "High Voltage AC Isolating Switch and Grounding Switch";
---Change "Chapter 2" in item 7.104.3c) to "Chapter 4", the original IEC text is wrong;
---Adjusted the order of references.
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed by the China Electrical Equipment Industry Association.
This document is under the jurisdiction of the National High Voltage Switchgear Standardization Technical Committee (SAC/TC65).
This document was drafted by. New Northeast Electric Group High Voltage Switch Co., Ltd., Xi'an High Voltage Electrical Apparatus Research Institute Co., Ltd., State Grid Jiang
Jiangsu Electric Power Co., Ltd. Electric Power Research Institute, Hunan Changgao High Voltage Switch Co., Ltd., Shanghai Electric Power Transmission and Distribution Test Center Co., Ltd.,
Chint Electric Co., Ltd., State Grid Hubei Electric Power Co., Ltd. Electric Power Research Institute, China Electric Power Research Institute Co., Ltd., Qingdao Electric Power Research Institute Co., Ltd.
Daote Ruide Electric Co., Ltd., Jiangsu Nanrui Pawel Electric Co., Ltd., Jiangsu Rugao High Voltage Electrical Co., Ltd., Shandong Taikai
Isolating Switch Co., Ltd., Xi'an Xidian Switch Electrical Co., Ltd., TBEA Zhongfa Shanghai High Voltage Switch Co., Ltd., Pinggao Group Co., Ltd.
Company, Tai'an Taishan High Voltage Switch Co., Ltd., Schneider Electric (China) Co., Ltd., Cooper (Ningbo) Electric Co., Ltd., ABB
(China) Co., Ltd., Shanghai Nanhua Lanling Electric Co., Ltd., Eaton Power Equipment Co., Ltd., Hitachi Energy (China) Co., Ltd., Jiangsu
Huaguan Electrical Appliances Group Co., Ltd., Qingdao Shangke High Voltage Electrical Appliances Research Institute Co., Ltd., Shandong Taikai Vacuum Switch Co., Ltd., Qingdao Yihe Electric
Gas Group Co., Ltd., Chuankai Electric Co., Ltd., Ningbo Yaohua Electric Technology Co., Ltd., Shenzhen Power Supply Bureau Co., Ltd., Xiamen
ABB Switch Co., Ltd., Huayi Electric Co., Ltd., Guangdong Weineng Electric Co., Ltd., Zhejiang Bada Electronic Instrument Co., Ltd. Shitong
Electrical Branch, Liaoning Dongda Electric Power Technology Co., Ltd., Shenzhen Electrical Science Research Institute, Shandong Dachi High Voltage Switch Co., Ltd., Southern China
Electric Power Research Institute of Extra High Voltage Transmission Company of Power Grid Co., Ltd., Jiangsu Jinyou Electric Co., Ltd., Henan Senyuan Electric Co., Ltd.,
Liaoning High Voltage Electrical Product Quality Inspection Co., Ltd., Ningbo Tianzhi Electric Technology Co., Ltd., State Grid Sichuan Electric Power Company Electric Power Research
Institute, State Grid Electric Power Research Institute Wuhan Nari Co., Ltd., Siemens Medium Voltage Switch Technology (Wuxi) Co., Ltd., Henan Pingzhi High Voltage
Switch Co., Ltd., State Grid Chongqing Electric Power Company Electric Power Research Institute, Hangzhou Electric Power Equipment Manufacturing Co., Ltd. Lin'an Hengxin Complete Electrical Manufacturing Co., Ltd.
Manufacturing branch company, Suzhou Electrical Apparatus Research Institute Co., Ltd., Shanghai Siyuan High Voltage Switch Co., Ltd., Yunnan Yunkai Electric Co., Ltd.
Division, Ningbo Naisen Electric Technology Co., Ltd., State Grid Shaanxi Electric Power Co., Ltd. Electric Power Research Institute, Tianshui Great Wall Switch Factory Group Co., Ltd.
Company, Shanghai Pinggao Tianling Switch Co., Ltd., Henan High Voltage Electrical Equipment Research Institute Co., Ltd., China Electric Power Engineering Consulting Group East China Electric Power
Design Institute Co., Ltd., Xiamen Huadian Switch Co., Ltd., Tianyi Yi Electric Co., Ltd., Fujian Yuneng Electric Power Equipment Co., Ltd., Fu
Jiansenda Electric Co., Ltd., State Grid Jiangsu Electric Power Co., Ltd. Suzhou Power Supply Branch, Schneider Electric (Xiamen) Switching Equipment Co., Ltd.
Company, State Grid Jiangsu Electric Power Co., Ltd., Beijing Shuangjie Electric Co., Ltd., Siemens Energy High Voltage Switch (Hangzhou) Co., Ltd., State Grid
Jiangsu Electric Power Co., Ltd. Extra High Voltage Branch, State Grid Shanghai Electric Power Company, State Grid Shanghai Electric Power Company Extra High Voltage Branch, Xiamen
ABB High Voltage Switch Co., Ltd., State Grid Hebei Electric Power Co., Ltd. Electric Power Research Institute, Shanghai Siemens High Voltage Switch Co., Ltd., State Grid Hebei Electric Power Co., Ltd.
Net Ningxia Electric Power Co., Ltd. Electric Power Research Institute, Shijiazhuang Kelin Electrical Equipment Co., Ltd.
The main drafters of this document. Wu Wenhai, Tian Enwen, Zhang Zixiao, Xing Na, Wang Yi, Gao Shan, Feng Wujun, Deng Wenhua, Yuan Fuxing, Kong Xiangjun,
Yao Sili, Zhao Songlin, Gao Ning, Hu Jing, Chen Min, Feng Ying, Zhang Zhenqian, Zhao Weizhou, Yao Huailin, Yang Guosheng, Yang Lei, Zhang Zhenfeng, Wang Genzheng, Wang Xiangke,
Bai Wenshuai, Lei Xiaoqiang, Liu Chengxue, Xie Jianbo, Tan Yan, Wang Lahong, Zhang Jian, Zhang Xiangao, Luo Xianghua, Qin Chengwei, Kong Xiangchong, Ji Guanghui, Lu Enlin,
Huang Lingzhong, Liu Yuwen, Jiao Zhenjiang, Wang Fumin, Ni Honghua, Qu Jiaxing, Xiao Minying, Wang Zongying, Zhang Changhong, Li Qingping, Liu Yang, Zhao Jingbo,
Lin Fuming, Wang Jiayi, Hu Zhiwu, Li Jianzhong, Li Songlei, Li Yong, Wang Wanting, Yang Yingjie, Yang Peng, Yang Xijiang, Zhu Peilong, Yang Dingge, Zhang Wei,
Qian Lixiao, Yang Baoxin, Li Shancheng, Wang Weihua, Zhang Xinglang, Zhu Yongbo, Jiang Hailin, Chen Zeyin, Xu Jun, Wu Bingchang, Ding Ran, Kong Guowei, Le Dangjiu,
Wu Quanfeng, Li Ming, Zhou Guliang, Geng Chao, Xia Yingyi, Pan Jin, Cui Jiutong, Wu Xutao, Duan Hongmin.
The previous versions of this document and the documents it replaces are as follows.
---First released in 1980 as GB 1985-1980;
---In the second revision in 1980, GB 1985-1980 was divided into two parts. mandatory standards and recommended standards, respectively.
GB 1985-1989 and GB/T 13601-1992, this document corresponds to the mandatory standard GB 1985-1989;
---In the third revision in.1992, GB/T 13601-1992 "Operation of high-voltage switchgear under severe freezing conditions" was incorporated
test";
---The fourth revision in.2004;
---This is the fifth revision.
Introduction
This document is used in conjunction with GB/T 11022-2020.Compared with GB/T 11022-2020, this document has new sections, annotations, and tables
And the figures are numbered starting from 101.
High voltage AC isolating switch and earthing switch
1 Scope
This document specifies the normal and special operating conditions, ratings, and design and structural requirements for high-voltage AC isolating switches and earthing switches.
It describes the corresponding type test and factory test test methods, provides selection guidelines, and stipulates transportation, storage, installation, operation and maintenance.
This document is suitable for systems designed and installed indoors and outdoors, operating at a frequency of 50Hz and below, and a nominal voltage of 3kV and above.
AC isolating switch and grounding switch.
This document also applies to the operating mechanisms of these disconnectors and earthing switches and their auxiliary equipment.
Additional requirements for isolating switches and earthing switches in enclosed switchgear and control equipment are in GB/T 3906-2020 and
Given in GB/T 7674-2020.
This document also applies to switchgear having, among other functions, isolating and/or earthing functions, such as fast earthing switches, circuit breakers and
load switch.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 311.1-2012 Insulation coordination Part 1.Definitions, principles and rules (IEC 60071-1.2006, MOD)
GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without tolerances noted (eqvISO 2768-1.1989)
GB/T 1984-2014 High-voltage AC circuit breaker (IEC 62271-100.2008, MOD)
GB/T 2900.19-2022 Electrical terminology high voltage test technology and insulation coordination
GB/T 2900.20-2016 Electrical terminology High-voltage switchgear and control equipment (IEC 60050-441.1984, MOD)
GB/T 2900.57-2008 Electrical terminology for power generation, transmission and distribution operations (IEC 60050-614.1987, MOD)
GB/T 2900.83-2008 Electrical terminology Electrical and magnetic devices (IEC 60050-151.2001, IDT)
GB/T 3906-2020 3.6kV~40.5kV AC metal-enclosed switchgear and control equipment (IEC 62271-200.
2011,MOD)
GB/T 4208-2017 Enclosure protection level (IP code) (IEC 60529.2013, IDT)
GB/T 4473-2018 Synthetic test of high-voltage AC circuit breakers (IEC 62271-101.2017, MOD)
GB/T 7674-2020 Gas-insulated metal-enclosed switchgear with rated voltage 72.5kV and above (IEC 62271-203.
2011,MOD)
GB/T 11022-2020 Common technical requirements for high-voltage AC switchgear and control equipment standards (IEC 62271-1.2017, MOD)
GB/T 20138-2006 Protection level of electrical equipment enclosures against external mechanical impact (IK code) (IEC 62262.2002, IDT)
IEC /T R62271-305 High-voltage switchgear and control equipment Part 305.Air insulation isolation above rated voltage 52kV
3 Terms and definitions
GB/T 2900.19-2022, GB/T 2900.20-2016, GB/T 2900.57-2008, GB/T 2900.83-2008 and
The terms and definitions defined in GB/T 11022-2020 and the following apply to this document.
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