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GB/T 21431-2023: Technical specification for inspection of lightning protection systems of buildings
Status: Valid GB/T 21431: Evolution and historical versions
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Technical specification for inspection of lightning protection systems of buildings
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[Including Modification 2018XG1] Technical code for inspection of lightning protection system in building
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Technical specifications for inspection of lightning protection system in building
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Basic data | Standard ID | GB/T 21431-2023 (GB/T21431-2023) | | Description (Translated English) | Technical specification for inspection of lightning protection systems of buildings | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K04 | | Classification of International Standard | 91.120.40 | | Word Count Estimation | 74,767 | | Date of Issue | 2023-12-28 | | Date of Implementation | 2024-07-01 | | Older Standard (superseded by this standard) | GB/T 21431-2015 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 21431-2023: Technical specification for inspection of lightning protection systems of buildings
---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 91:120:40
CCSK04
National Standards of People's Republic of China
Replace GB/T 21431-2015
Technical Specifications for Detection of Lightning Protection Devices in Buildings
Published on 2023-12-28
2024-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
PrefaceⅠ
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Test categories and items 4
5 Testing requirements and methods 4
6 Regular testing cycle 29
7 Testing process 29
8 Test records, conclusions and reports29
Appendix A (Normative) Test items for acceptance testing and periodic testing 30
Appendix B (informative) Explosive hazardous environment zoning and lightning protection classification 32
Appendix C (informative) Main performance and parameter indicators of commonly used testing instruments 40
Appendix D (normative) Measurement of transition resistance 42
Appendix E (normative) Measurement of ground resistance 46
Appendix F (normative) Measurement of soil resistivity 47
Appendix G (normative) Conversion of impact grounding resistance and power frequency grounding resistance of grounding device 51
Appendix H (Normative) Measurement of Lightning Electromagnetic Pulse Magnetic Field 53
Appendix I (normative) Measurement of SSD minimum instantaneous operating current breaking time (tO) 57
Appendix J (normative) Measurement of surge protector (SPD) varistor voltage (VV), leakage current (Ile) and insulation resistance (Ri) 58
Appendix K (Normative) Testing value rounding rules, limit value expression and judgment method 59
Appendix L (informative) Lightning protection device inspection report format 61
Reference 70
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 21431-2015 "Technical Specifications for Detection of Lightning Protection Devices in Buildings": Compared with GB/T 21431-2015, except
In addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Changed the scope (see Chapter 1, Chapter 1 of the:2015 edition);
b) Some terms and definitions have been changed (see 3:1, 3:2, 3:8, 3:9, 3:10, 3:12, 3:14, 3:15, 3:17, 3:18,:2015 version of 3:1,
3:23, 3:9, 3:25, 3:18, 3:15, 3:24, 3:22, 3:19, 3:20);
c) Some terms are deleted (see 3:2~3:7, 3:10~3:14, 3:16, 3:17, 3:21 of the:2015 version);
d) Added some terms (see 3:3~3:6, 3:11, 3:13, 3:16);
e) The testing categories and items have been changed (see Chapter 4, Chapter 4 of the:2015 edition);
f) Added the basic requirements of “testing requirements and methods” (see 5:1);
g) Operation requirements and equipment requirements have been changed (see 5:2, 5:3, 5:9 and 5:10 of the:2015 edition);
h) Added detection methods (see 5:4);
i) The name and number of sub-items of the test items have been added, and the requirements and methods of the test items have been changed (see 5:5,:2015 version
5:2~5:4, 5:6~5:8);
j) The testing process has been changed (see Chapter 7, Chapter 7 of the:2015 edition);
k) The test records, conclusions and reports have been changed (see Chapter 8, Chapter 8 of the:2015 edition);
l) Added Appendix A "Test items for acceptance testing and periodic testing" (see Appendix A);
m) Added Appendix D "Measurement of Transition Resistance" (see Appendix D);
n) Appendix H "Measurement of Lightning Electromagnetic Pulse Magnetic Field" has been changed (see Appendix H, Appendix F of the:2015 version);
o) Added Appendix I "Measurement of SSD minimum instantaneous operating current breaking time (tO)" (see Appendix I);
p) Added Appendix J "Measurement of surge protector (SPD) varistor voltage (VV), leakage current (Ile) and insulation resistance (Ri)" (see attachment
Record J);
q) Added Appendix K "Testing value rounding rules, limit value expression and judgment method" (see Appendix K):
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 and coordinated by the National Lightning Protection Standardization Technical Committee (SAC/TC258):
This document was drafted by: Shanghai Meteorological Disaster Prevention Technology Center, Shanghai University, Beijing Lightning Protection Device Safety Testing Center, Shanghai
Lightning Protection Device Testing Station Co:, Ltd:, Shanghai Geotechnical Engineering Testing Center Co:, Ltd:, Guangdong Putian Lightning Protection Testing Co:, Ltd:, Schnee
Dewangao (Tianjin) Electrical Equipment Co:, Ltd:, State Grid Electric Power Research Institute Wuhan Nari Co:, Ltd:, Zhejiang Provincial Architectural Design Research
Institute, Guangdong Xierli Lightning Protection Testing Co:, Ltd:, Chongqing Lightning Protection Center, Sichuan Akures Testing and Certification Co:, Ltd:, Hubei Province Lightning Protection
Center, China Academy of Information and Communications Technology, Beijing ABB Low Voltage Electrical Appliances Co:, Ltd:, Chongqing Laiting Lightning Protection Technology Co:, Ltd:, Jiangsu Thor
Lightning Protection Testing Co:, Ltd:, Hefei Aerospace Electronics Physics Technology Co:, Ltd:, China Academy of Railway Sciences Group Co:, Ltd: Communication Signal Research
Institute, Shenzhen Keanda Testing Technology Co:, Ltd:, Dongdianhua Electronic Components (Zhuhai Free Trade Zone) Co:, Ltd:, Guangdong Provincial Climate Center, Nanjing
Kuanyong Electronic Systems Co:, Ltd:, Guangxi Zhuang Autonomous Region Lightning Protection Center, Zhongshan Xinli Lightning Protection Technology Co:, Ltd:, Fujian Meteorological Disaster Prevention
Royal Technology Center, Beijing Institute of Building Materials Inspection Co:, Ltd:, Xiamen Daheng Technology Co:, Ltd:, State Grid Fujian Electric Power Co:, Ltd:
Electric Power Research Institute, Zhongke Tianji Technology Co:, Ltd:, Electric Power Research Institute of Guangdong Power Grid Co:, Ltd:, Donghua Engineering Department
Technology Co:, Ltd:, Zhejiang Jusen Testing Technology Co:, Ltd:, Hunan Corbett Engineering Construction Co:, Ltd:, and Henan Haolong Industrial Group have
Co:, Ltd:, Nanjing Jiebao Carle Electrical Testing Technology Co:, Ltd:, Hubei Tianhong Testing Technology Group Co:, Ltd:, Guangdong Gold Group Co:, Ltd:
Company, Wuhan Leiguang Digital Technology Co:, Ltd:, Shandong Tianke Lightning Protection Engineering Co:, Ltd:, and Zhonghong Inspection and Certification Group Co:, Ltd:
The main drafters of this document: Zhao Yang, Yang Zhen, Liu Dingqi, Zhou Qibin, Song Pingjian, Yuan Dengping, Ding Haifang, Gu Shanqiang, Zhong Xiangmin, Wang Su,
Chen Dong, Yang Tong, Xu Wei, Lu Qiang, Shi Yajing, Zhang Dayuan, Wang Hongmin, Cheng Hao, Zeng Wu, Yang Wenyuan, Zhang Tao, Duan Zemin, Xiao Tong, Chen Ke, Yu Andong,
Zeng Yangbin, Tang Liangliang, Zhu Xuanzhu, Wei Zhuoyun, Ma Pan, Zeng Jinquan, You Zhiyuan, Guo Lingyu, Li Bochen, Yan Yan, Li Siliang, Xie Wenbing, Gao Panliang,
Wang Rui, Zhou Xiaoming, Shi Lizhi, Guo Guixiong, Yu Yuedong, Li Fei, Liu Xianhuan, Xu Dajun, Liang Kongwei, He Chaowen, Li Gen:
The previous versions of this document and the documents it replaces are as follows:
---First published as GB/T 21431-2008 in:2008;
---First revised in:2015;
---This is the second revision:
Technical Specifications for Detection of Lightning Protection Devices in Buildings
1 Scope
This document stipulates the testing classification and items, testing requirements and methods, regular testing cycle, and testing flow of building 1) lightning protection devices:
process, test records, conclusions and reports:
This document is applicable to the detection of lightning protection devices in buildings:
This document does not apply to:
a) Railway system;
b) Vehicles, ships, aircraft and offshore devices;
c) Underground high-voltage pipelines; pipelines, power lines and communication lines that are not connected to the building:
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 18802:11 Low-voltage surge protector (SPD) Part 11: Performance requirements and performance requirements of surge protectors for low-voltage power supply systems
experiment method
GB/T 32938-2016 Lightning protection device testing service specifications
GB 50057-2010 Design Code for Lightning Protection of Buildings
GB 50601-2010 Code for construction and quality acceptance of lightning protection projects in buildings
GB 50952-2013 Technical Specifications for Rural Residential Lightning Protection Engineering
GB 51017-2014 Technical specifications for lightning protection engineering of ancient buildings
GB 55024-2022 General specifications for building electrical and intelligence
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Lightning protection device
The entire system used to reduce personal injury and physical damage caused by lightning strikes to buildings:
Note: LPS consists of external and internal lightning protection devices:
[Source: GB/T 21714:1-2015, 3:42, with modifications]
3:2
Lightning protection device detection
The entire process of inspection, measurement and comprehensive information analysis and processing to determine whether lightning protection devices meet standard requirements:
1) The buildings in this document generally refer to buildings (structures):
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