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GB/T 32520-2024: Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a. c. systems above 1 kV
Status: Valid GB/T 32520: Evolution and historical versions
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Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a. c. systems above 1 kV
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GB/T 32520-2024
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| GB/T 32520-2016 | English | RFQ |
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Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of ac. systems above 1 kV
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GB/T 32520-2016
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PDF similar to GB/T 32520-2024
Basic data | Standard ID | GB/T 32520-2024 (GB/T32520-2024) | | Description (Translated English) | Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a. c. systems above 1 kV | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K49 | | Classification of International Standard | 29.080.99 | | Word Count Estimation | 74,766 | | Date of Issue | 2024-03-15 | | Date of Implementation | 2024-10-01 | | Older Standard (superseded by this standard) | GB/T 32520-2016 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 32520-2024: Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a. c. systems above 1 kV
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ICS 29.080.99
CCSK49
National Standards of People's Republic of China
Replaces GB/T 32520-2016
Overhead transmission and distribution lines for AC 1kV and above
Series Gap Metal Oxide Arrester (EGLA)
[IEC 60099-8.2017, Surgearresters-Part 8.Metal-oxide surgearresters
Published on March 15, 2024, implemented on October 1, 2024
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 Marking and classification 5
4.1 EGLA logo 5
4.2 EGLA classification 6
5 Standard Ratings and Operating Conditions 6
5.1 Standard rated voltage 6
5.2 Standard rated frequency 6
5.3 Standard nominal discharge current 6
5.4 Operating conditions 7
6 Technical Requirements 7
6.1 Insulation resistance of SVU jacket and whole EGLA 7
6.2 Residual pressure 7
6.3 High Current Load 8
6.4 Lightning discharge capability 8
6.5 Short-circuit performance of SVU 8
6.6 Mechanical properties 8
6.7 Weathering of SVU 9
6.8 SVU reference voltage 9
6.9 Internal partial discharge 9
6.10 Insulation coordination 9
6.11 Follow-on current interruption 9
6.12 Electromagnetic compatibility 9
6.13 End of Life10
6.14 Leakage current at 0.75 times DC reference voltage of SVU 10
6.15 Appearance requirements for SVU composite jackets and support parts 10
6.16 Sealing performance of SVU 10
6.17 EGLA impulse volt-second characteristics 10
6.18 Anti-fouling performance 10
6.19 Clearance distance check 10
6.20 Inspection of insulation support 10
6.21 Galvanizing inspection of metal fittings 11
6.22 Packaging, transportation and storage of EGLA 11
7 Test requirements 11
7.1 Measuring equipment and accuracy 11
7.2 Test sample 11
8 Type test 11
8.1 General requirements 11
8.2 Insulation withstand test 13
8.3 Residual pressure test 14
8.4 Discharge voltage test 14
8.5 High current impulse withstand test 15
8.6 Repeated charge transfer test 16
8.7 Short circuit test 18
8.8 Follow-on current interruption test 27
8.9 Mechanical load test 30
8.10 Weathering test 37
8.11 Appearance Inspection 38
8.12 Reference voltage test 38
8.13 Leakage current test at 0.75 times DC reference voltage 38
8.14 Sealing test 38
8.15 Partial discharge test 39
8.16 Lightning impulse volt-second characteristic test 39
8.17 Radio interference voltage test 40
8.18 Visible corona test 40
8.19 Switching impulse withstand voltage test 40
8.20 Unified creepage distance inspection 40
8.21 Clearance distance check 41
8.22 Power frequency withstand voltage test of support parts 41
8.23 Steep wave impulse voltage test for support 41
8.24 Galvanizing inspection of metal fittings 41
9 Routine Test 41
10 Acceptance test 42
11 Sampling test and periodic test 42
11.1 Sampling test 42
11.2 Periodic testing 42
Appendix A (Informative) Comparison of the chapter and article numbers of this document with those of IEC 60099-8.2017 44
Appendix B (Informative) Technical differences between this document and IEC 60099-8.2017 and their causes 46
Appendix C (Normative) Abnormal operating conditions 52
Appendix D (Normative) Vibration Test 53
Appendix E (Normative) Typical EGLA electrical parameters 55
Appendix F (Normative) Coordination test between insulator withstand and EGLA protection level 57
Appendix G (Informative) Packaging, transportation and storage of EGLA 59
Appendix H (Informative) A typical EGLA lightning impulse 50% discharge voltage 60
Appendix I (Normative) Test Procedure for Repeated Transfer of Charge for Series Intervals 61
Appendix J (Informative) Typical test circuit for the follow-current interruption test 62
Appendix K (Normative) Mechanical Properties 63
References 67
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 32520-2016 "Metal oxides with external series gap for overhead transmission and distribution lines above 1 kV AC"
Compared with GB/T 32520-2016, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
--- Added the terms and definitions "series gap", "insulating support", "tensile load" (see 3.3, 3.4, 3.25);
--- Changed the terms and definitions "External series gap line arrester" (see 3.1, 3.1 of the.2016 edition), "Rated voltage of EGLA
Pressure” (see 3.8, 3.6 of the.2016 edition);
---Changed the insulation tolerance, residual pressure, mechanical properties of the SVU jacket and the entire EGLA, and the appearance requirements of the SVU composite jacket and support parts
Requirements (see 6.1, 6.2, 6.6, 6.15, 6.1, 6.2, 6.6, 6.16 of the.2016 edition);
--- Added requirements for anti-fouling performance, gap distance inspection, insulation support inspection, and galvanized inspection of hardware (see 6.18, 6.19, 6.20,
6.21);
--- Deleted the continuous current of SVU (see 6.14 of the.2016 edition);
--- Deleted the EGLA discharge voltage performance requirements (see 6.18 of the.2016 edition);
--- Added normative reference document GB/T 16927.4 (see 7.1);
--- Changed the high current impulse withstand test (see 8.5, 8.5 of the.2016 edition);
--- Deleted the lightning discharge capability test (see 8.6 of the.2016 edition);
--- Deleted the continuous current test (see 8.12 of the.2016 edition);
---Added repeated charge transfer test, visible corona test, operating impulse withstand voltage test, unified creepage distance inspection, clearance distance
Disconnection inspection, power frequency withstand voltage test for support parts, steep wave impulse voltage test for support parts, galvanizing inspection for hardware (see 8.6, 8.18,
8.19, 8.20, 8.21, 8.22, 8.23, 8.24);
--- For polymer (especially composite and resin flex casting) jacket SVU, UV radiation resistance should be in accordance with 8.10.5.1 and 810.5.2
(9.3.2 in GB/T 22079-2008) UV test. If according to 10.8.4 in GB 11032-2010
The weathering test report of the 5000h-test (series B) is applicable to this design and can replace the UV test with the agreement of both the supplier and the buyer.
Change to "For polymer (composite and resin casting) jacket SVU, UV test should be carried out." Delete normative references
GB/T 22079-2008 (see 8.10.5, 8.10.5 of the.2016 edition);
--- List the sealing test procedure in detail and delete the normative reference document JB/T 7618-2011 (see 8.14.3,.2016 edition)
8.15.3);
--- Deleted the normative reference document GB/T 2317.2 (see 8.18, 10.4 of the.2016 edition);
--- Changed the normative reference document GB/T 191-2008 to an informative reference document (see Appendix G, Appendix G of the.2016 edition).
This document is modified to adopt IEC 60099-8.2017 "Lightning arresters Part 8.External arresters for overhead transmission and distribution lines for AC systems above 1 kV"
Series Gap Metal Oxide Arrester (EGLA)".
Compared with IEC 60099-8.2017, this document has many structural adjustments. A comparison of the structural number changes between the two documents
See Appendix A for the table.
This document has many technical differences compared with IEC 60099-8.2017.
A list of these technical differences and their reasons is given in Appendix B.
The following editorial changes were made to this document.
--- To be consistent with my country's technical standard system, the standard name is changed to "External Band for Overhead Transmission and Distribution Lines above 1 kV AC"
Series Gap Metal Oxide Arrester (EGLA)";
--- Added informative appendix A, appendix B, appendix G and appendix H.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Electrical Equipment Industry Association.
This document is under the jurisdiction of the National Technical Committee for Standardization of Lightning Arrester (SAC/TC81).
This document was drafted by. Xi'an High Voltage Electric Equipment Research Institute Co., Ltd., China Electric Power Research Institute Co., Ltd., Xi'an Xidian
Lightning Device Co., Ltd., Jinguan Electric Co., Ltd., Pinggao Toshiba (Langfang) Lightning Arrester Co., Ltd., Xiamen ABB Lightning Arrester Co., Ltd.
Xi'an Jiaotong University, Tsinghua University, Xi'an Shendian Electric Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Shandong Xunshi Electric
China Southern Power Grid Co., Ltd., China Electric Power Research Institute Wuhan Nanrui Co., Ltd., China Southern Power Grid Co., Ltd.
Company, North China Electric Power Research Institute Co., Ltd., State Grid Sichuan Electric Power Company Electric Power Research Institute, Jiangdong Hardware Equipment Co., Ltd.,
Dalian North Lightning Arrester Co., Ltd., Mingdianshe (Zhengzhou) Electrical Engineering Co., Ltd., Chint Electric Co., Ltd., Nanyang Jinniu Electric Co., Ltd.
Co., Ltd., Shanghai Electric Porcelain Factory Co., Ltd., Fushun Electric Porcelain Manufacturing Co., Ltd., Hengda Electric Co., Ltd., Nanyang Zhongwei Electric Co., Ltd., Jia
Xingshi Ruijia Electric Co., Ltd., Hangzhou Yongde Electric Co., Ltd., China Academy of Railway Sciences Group Co., Ltd., Sichuan University, Dalian Law School
FUAN ELECTRIC LIMITED.
The main drafters of this document are. Sun Quan, Wang Baoshan, Zhang Boyu, Wang Jiansheng, He Jimou, She Haibo, Xiong Yi, Xu Xueting, Li Minggang, Zhao Dongyi,
Zuo Zhongqiu, Li Yuan, Wang Lulu, Guo Jie, He Jinliang, Jia Dongxu, Cai Hansheng, Song Jijun, Wan Shuai, Li Fan, Zhu Jiaxi, Huang Yong, Mi Pu, Hu Shangmao,
Peng Yanghan, Lu Wenhao, Peng Long, Cui Tao, Guo Yongcheng, Gao Yonghai, Ma Aiqian, Li Jingbiao, Jin Guoqing, Sun Tao, Hou Bing, Liu Fei, Liu Bin, Dong Jianhong,
Jiang Cheng, Lei Dong, Meng Pengfei, Li Shilei, and Wu Shaojun.
Previous versions of this document.
---GB/T 32520-2016.
Overhead transmission and distribution lines for AC 1kV and above
Series Gap Metal Oxide Arrester (EGLA)
1 Scope
This document applies to metal oxide surge arresters with external series gaps for AC 1kV and above overhead transmission and distribution lines (hereinafter referred to as
External series gap line arrester (EGLA) protects only the line insulation (including insulators and air gap) from lightning-induced flashover or
breakdown.
Since the metal oxide resistor of EGLA is connected to the line through an external series gap, the following issues will not be covered in this document
consider.
--- Operation impulse discharge voltage;
--- Steep wave and operation impact residual pressure;
---Thermal stability;
---Long continuous current impulse tolerance;
---Power frequency voltage withstand time characteristics of lightning arrester;
--- Disconnector test;
---Aging caused by power frequency voltage.
For some performance requirements of metal oxide arresters with external series gaps that are designed with an integrated design of the arrester body and the gap and cannot be disassembled,
The test method is not considered in this document, so this document is not applicable to this type of arrester.
It is requested to refer to some contents of this document for implementation, but additional consideration should be given to the contents of this document that are not evaluated for the performance of this type of lightning arrester.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, 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)
Note. There is no technical difference between the referenced content of GB/T 311.1-2012 and the referenced content of IEC 60071-1.2006.
GB/T 2423.17-2008 Environmental testing for electric and electronic products Part 2.Test method Test Ka. Salt spray (IEC 60068-
2-11.1981,IDT)
GB/T 2423.22-2012 Environmental testing Part 2.Test method Test N. Temperature change (IEC 60068-2-14.
2009, IDT)
GB/T 2900.12-2008 Electrical terminology Lightning arresters, low voltage surge protectors and components
GB/T 2900.19-2022 Electrical terminology High voltage test technology and insulation coordination
GB/T 4585-2004 Artificial pollution test for high voltage insulators for AC systems (IEC 60507.1991, IDT)
GB/T 7354 High voltage test technique Partial discharge measurement (GB/T 7354-2018, IEC 60270.2000, MOD)
GB/T 11032-2020 AC gapless metal oxide arresters (IEC 60099-4.2014, MOD)
Note. There is no technical difference between the referenced content of GB/T 11032-2020 and the referenced content of IEC 60099-4.2014.
GB/T 11604-2015 Test methods for radio interference of high voltage electrical equipment (IEC /T RCISPR18-2.2010, MOD)
Note. There is no technical difference between the contents cited in GB/T 11604-2015 and those cited in IEC /T RCISPR18-2.2010.
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