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GB/T 24845-2018 English PDF

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GB/T 24845-2018: Specification of metal-oxide surge arresters without gaps for 1 000 kV a.c. system
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GB/T 24845-2018English599 Add to Cart 5 days [Need to translate] Specification of metal-oxide surge arresters without gaps for 1 000 kV a.c. system Valid GB/T 24845-2018

PDF similar to GB/T 24845-2018


Standard similar to GB/T 24845-2018

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Basic data

Standard ID GB/T 24845-2018 (GB/T24845-2018)
Description (Translated English) Specification of metal-oxide surge arresters without gaps for 1 000 kV a.c. system
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K44
Classification of International Standard 29.240.10
Word Count Estimation 30,315
Date of Issue 2018-07-13
Date of Implementation 2019-02-01
Regulation (derived from) an High Voltage Electric Apparatus Research Institute Co., Ltd., Pinggao Toshiba (Langfang) Arrestor Co., Ltd., Nanyang Jinguan Electric Co., Ltd., Fushun Electric Porcelain Manufacturing Co., Ltd. ,Xi
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 24845-2018: Specification of metal-oxide surge arresters without gaps for 1 000 kV a.c. system


---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.
Specification of metal-oxide surge arresters without gaps for 1 000 kV acsystem ICS 29.240.10 K44 National Standards of People's Republic of China Replace GB /Z 24845-2009 For 1000kV AC system Technical specification for gapless metal oxide arresters Published on.2018-07-13 Implementation of.2019-02-01 State Market Supervisory Administration China National Standardization Administration issued

Content

Foreword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 logo 3 5 standard rating 4 6 operating conditions 4 7 Technical requirements 5 8 Test requirements 10 9 type test (design test) 10 10 routine tests 13 11 Acceptance test 14 12 regular test 14 13 sampling test 14 14 Gas-insulated metal-enclosed gap-free metal oxide surge arresters (GIS arresters) 15 15 Nameplates, packaging, transportation and storage 22 Appendix A (Normative Appendix) Abnormal Operating Conditions 23 Appendix B (Normative) Voltage Distribution Test Method 24 Appendix C (Normative) Special requirements for porcelain bushing arresters for 1000kV AC systems used as post insulators 26 Appendix D (Normative Appendix) Monitor for gapless metal oxide surge arresters for 1000kV AC systems 27

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB /Z 24845-2009 "Technical Specification for Non-Gap Metal Oxide Arresters for 1000kV AC Systems". Compared with GB /Z 24845-2009, the main technical changes of this standard except for editorial changes are as follows. --- Increased the relevant parameters of the rated voltage 804kV, 780kV arrester (see 7.1); ---External insulation withstand test, residual pressure test, action load test, power frequency voltage withstand time characteristic test, short circuit current test, seismic test Tests, bending load tests, etc. have been modified according to the latest edition of the IEC and recent research results (see Chapter 9, GB /Z 24845- Chapter 10 of.2009); --- Increased voltage equalization capacitance test, environmental test and creepage distance check (see Chapter 9); --- Increased abnormal operating conditions of the arrester (see Appendix A); --- Revised the calculation formula in the voltage distribution test (see Appendix B, Appendix A of GB /Z 24845-2009); --- Added special requirements for porcelain sleeve arresters for 1000kV AC systems used as post insulators (see Appendix C); --- Added technical requirements for monitors for gapless metal oxide surge arresters in 1000kV AC systems (see Appendix D). This standard was proposed by the China Electricity Council. This standard is under the jurisdiction of the National UHV AC Transmission Standardization Technical Committee (SAC/TC569). This standard is drafted by. State Grid Corporation, China Electric Power Research Institute Co., Ltd., Xi'an Xidian Lightning Arrester Co., Ltd. Division, Xi'an High Voltage Electric Apparatus Research Institute Co., Ltd., Pinggao Toshiba (Langfang) Lightning Arrester Co., Ltd., Nanyang Jinguan Electric Co., Ltd., Fushun Electric Porcelain Manufacturing Co., Ltd., Xi'an Jiaotong University. The main drafters of this standard. Shi Weidong, Chen Weijiang, Zhang Boyu, Ge Dong, Wang Baoshan, Zhang Cuixia, Chen Guoqiang, Xiong Yi, He Jimou, Li Fan, Yin Yi, Song Jijun, Xu Xueting, Tang Xiaozhong, Guo Jie, Tang Lin, He Ziming, Liu Hongtao, Wang Xiaogang. The previous versions of the standards replaced by this standard are. ---GB /Z 24845-2009. For 1000kV AC system Technical specification for gapless metal oxide arresters

1 Scope

This standard specifies the operating conditions, technical requirements, inspection rules, and tests for gapless metal oxide surge arresters for 1000kV AC systems. Inspection methods and packaging and transportation. This standard is applicable to porcelain bushings without gap metal oxide arresters designed for limiting the overvoltage of 1000kV AC systems. It is called "arrest arrester" and gas-insulated metal-enclosed gapless metal oxide surge arrester (referred to as "GIS arrester").

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 191 storage and transportation icon GB/T 7354 partial discharge measurement GB/T 7674 gas insulated metal-enclosed switchgear with rated voltage of 72.5kV and above GB/T 8905 SF6 electrical equipment in gas management and testing guidelines GB/T 11022-2011 Common technical requirements for high voltage switchgear and control equipment standards GB/T 11023 high voltage switchgear sulphur hexafluoride gas seal test guide GB/T 11032-2010 AC gapless metal oxide arrester GB/T 12022 industrial sulfur hexafluoride GB/T 13540-1992 Seismic requirements for high voltage switchgear and control equipment GB/T 16927.1 High Voltage Test Technique Part 1. General Definitions and Test Requirements GB/T 26218.1 Selection and sizing of high-voltage insulators for use under filth conditions Part 1. Definitions, information and general in principle GB/T 26218.2 Selection and sizing of high-voltage insulators for use in filth conditions - Part 2. Porcelain and glass for AC systems Glass insulator GB 50150 Electrical installation engineering electrical equipment handover test standard GB 50260-2013 Code for seismic design of power facilities JB/T 10492 metal oxide arrester monitoring device IEC 60099-4.2014 AC gap-free metal oxide surge arrester (Metal-oxidesurgearresterswithoutgapsfor Acsystems)

3 Terms and definitions

The following terms and definitions as defined in GB/T 11032-2010 and GB/T 11022-2011 apply to this document. For convenience Use, some of the terms and definitions in GB/T 11032-2010 and GB/T 11022-2011 are repeated below.

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