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GB/T 24837-2018 English PDF

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GB/T 24837-2018: 1 100 kV high-voltage alternating-current disconnectors and earthing switches
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GB/T 24837-2018English1559 Add to Cart 9 days [Need to translate] 1 100 kV high-voltage alternating-current disconnectors and earthing switches Valid GB/T 24837-2018

PDF similar to GB/T 24837-2018


Standard similar to GB/T 24837-2018

GB/T 11022   GB/T 38328   GB/T 30092   GB/T 24836   GB/T 24835   

Basic data

Standard ID GB/T 24837-2018 (GB/T24837-2018)
Description (Translated English) 1 100 kV high-voltage alternating-current disconnectors and earthing switches
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K43
Classification of International Standard 29.240.10
Word Count Estimation 78,70
Date of Issue 2018-09-17
Date of Implementation 2019-04-01
Older Standard (superseded by this standard) GB/Z 24837-2009
Regulation (derived from) National Standard Announcement No. 11 of 2018
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 24837-2018: 1 100 kV high-voltage alternating-current disconnectors and earthing switches

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1 100 kV high-voltage alternating-current disconnectors and earthing switches ICS 29.240.10 K43 National Standards of People's Republic of China Replace GB /Z 24837-2009 1100kV high voltage AC disconnector and grounding switch Published on.2018-09-17 Implementation of.2019-04-01 State market supervision and administration China National Standardization Administration issued

Content

Foreword V 1 Overview 1 1.1 Scope 1 1.2 Normative references 1 2 normal and special conditions of use 1 2.1 Overview 1 2.2 Normal use conditions 1 2.3 Special conditions of use 1 3 Terms and Definitions 1 4 rating 8 4.1 Overview 8 4.2 Rated voltage (Ur) 8 4.3 rated insulation level 8 4.4 Rated frequency (fr) 9 4.5 Rated current and temperature rise 9 4.6 Rated short-time withstand current (Ik) 9 4.7 Rated peak withstand current (Ip) 9 4.8 Rated short circuit duration (tk) 9 4.9 Rated supply voltage (Ua) for closing and opening devices and their auxiliary and control circuits 9 4.10 Rated power supply frequency for closing and opening devices and their auxiliary and control circuits 9 4.11 Pressure rating of compressed air supply for insulation and/or operation 9 4.12 Gas rated filling level for insulation and/or opening and closing 9 4.101 rated short circuit closing current 9 4.102 rated terminal mechanical load 10 4.103 Isolation switch busbar conversion current opening and closing capability rating 11 4.104 Grounding Switch Induction Current Opening and Closing Capability Rating 11 4.105 isolation switch bus charging current opening and closing capacity rating 11 4.106 Isolation switch and earthing switch mechanical life rating 11 4.107 Grounding Switch Electrical Life Rating 11 4.108 Isolation Switch Small Capacitance Current and Small Inductor Current Opening and Closing Capability Rating 11 5 Design and Structure 11 5.1 Requirements for liquid media in disconnectors and earthing switches 11 5.2 Requirements for gaseous media in isolating switches and earthing switches 11 5.3 Grounding of the isolating switch and grounding switch 11 5.4 Auxiliary and control equipment 12 5.5 Power Operation 12 5.6 Energy storage operation 12 5.7 Manpower-free operation 12 5.8 Trip unit operation 12 5.9 Low pressure and high pressure lockout and monitoring device 12 5.10 Nameplate 12 5.11 Interlocking device 13 5.12 Position indication 13 5.13 Degree of protection of the enclosure 13 5.14 Creepage distance 13 5.15 Gas and vacuum seals 13 5.16 Liquid seal 13 5.17 Fire hazard (flammability) 14 5.18 Electromagnetic Compatibility (EMC) 14 5.19 X-ray emission 14 5.20 Corrosion 14 5.101 Special requirements for grounding switches 14 5.102 Requirements for the disconnection of the isolating switch 14 5.103 Mechanical strength 14 5.104 Operation of the isolating switch and the grounding switch - the position of the moving contact system and its indication, signalling device 14 5.105 Maximum force allowed by human operation 15 5.106 Dimensional Tolerance 15 6 type test 16 6.1 General 16 6.2 Insulation test 17 6.3 Radio interference voltage (riv) test 18 6.4 Measurement of loop resistance 18 6.5 Temperature rise test 18 6.6 Test for short-time withstand current and peak withstand current 19 6.7 Protection level inspection 21 6.8 Sealing test 21 6.9 Electromagnetic Compatibility Test (EMC) 21 6.10 Additional tests for auxiliary and control loops 21 6.101 Grounding switch short circuit closing ability test 21 6.102 Operation and Mechanical Life Test 23 6.103 Operational test under severe freezing conditions 26 6.104 Operational test at extreme temperatures 27 6.105 Functional test of position indicating device 28 6.106 Busbar Conversion Current Opening and Closing Test 28 6.107 Induction current opening and closing test 28 6.108 Small capacitive current opening and closing test 28 6.109 Small inductive current opening and closing test 28 7 Factory test 28 7.1 Overview 28 7.2 Main circuit insulation test 29 7.3 Insulation test of auxiliary and control circuits 29 7.4 Measurement of main loop resistance 29 7.5 Sealing test 29 7.6 Design and visual inspection 29 7.101 Mechanical Operation Test 29 8 Selection guide for isolation switch and grounding switch 30 9 Information provided with enquiries, tenders and orders 32 10 Transportation, storage, installation, operation and maintenance rules 34 10.1 Overview 34 10.2 Conditions for transport, storage and installation 34 10.3 Installation 35 10.4 Run 35 10.5 Repair 35 11 Safety 35 11.1 Overview 35 11.2 Preventive measures at the manufacturer 35 11.3 User's precautions 35 11.4 Electrical aspects 35 11.5 Mechanical aspects 35 11.6 Hot aspects 35 11.7 Operational aspects 35 12 Product impact on the environment 35 Appendix A (Normative) Design and testing of position indicating devices 36 Appendix B (normative appendix) Isolation switch opening and closing bus conversion current 40 Appendix C (normative appendix) Grounding switch opening and closing induction current 45 Appendix D (informative) Test voltage for the most unfavorable insulation position when grounding switch is operated (temporary approach) 51 Appendix E (Normative) Gaseous and earthing switches used in gas-insulated and/or metal-enclosed switchgear Special requirements 52 Appendix F (Normative Appendix) 1100kV Gas Insulated Metal Enclosed Switchgear---Isolation Switch Opening and Closing Busbar Charging Current requirements 56 Appendix G (Normative) Alternative test method for short-circuit current closure test 63 Appendix H (Normative) Capacitive current opening and closing capability of air insulated disconnectors 65 Reference 69

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB /Z 24837-2009 "1100kV high voltage AC disconnector and grounding switch technical specifications". The main differences between this standard and GB /Z 24837-2009 are as follows. --- Chapter layout has been revised in accordance with GB/T 11022-2011. --- Revised the canonical reference document (see 1.2, Chapter 2 of GB /Z 24837-2009). --- Added the definition of M0 isolation switch (see 3.4.101.1). --- Modified the definition of the M1 class isolating switch (see 3.4.101.2, 3.4.1.1 of GB /Z 24837-2009). --- Added the definition of M0, M1 and M2 grounding switches (see 3.4.104.4, 3.4.104.5 and 3.4.104.6). --- Modified the definition of E0 and E1 grounding switches (see 3.4.104.1 and 3.4.104.2, 3.4.4.1 of GB /Z 24837-2009 and 3.4.4.2). --- Removed the definition of E2 grounding switch (see 3.4.4.3 of GB /Z 24837-2009). --- Modified the concept of "no significant change in voltage" (see Note 3.4.101, Note 3.4.1 of GB /Z 24837-2009). --- Increased rating "gas rating for insulation and/or opening and closing" (see 4.12). --- Revised the mechanical life rating of the M1 isolation switch and grounding switch (see 4.106, 5.16 of GB /Z 24837-2009). --- Added requirements for corrosion (see 5.20). --- Added additional tests for auxiliary and control loops (see 6.10). --- Increased preventive measures at the manufacturing facility (see 11.2). --- Increased user precautions (see 11.3). --- Increased environmental impact of the product (see Chapter 12). ---Modified the line wave impedance Z0 in the test circuit of the electrostatic induction current closing and breaking test, modified from 325Ω to 245Ω (see Figure C.2, Figure C.2 of GB /Z 24837-2009. --- Revised the factory test power frequency withstand voltage duration, modified from 1min to 5min, and 635kV previously specified Sophisticated test for 5min (see E.7.2, E.8.1 of GB /Z 24837-2009). --- Increase the total number of combined operations in the factory test, not less than.200 times (see E.7.101). --- Added the appendix "Alternative Test Method for Short-Circuit Current Closure Test" (see Appendix G). --- Added the appendix "Capacitive current opening and closing capability of air insulated disconnectors" (see Appendix H). This standard shall be used in conjunction with GB/T 11022-2011. Unless otherwise specified in this standard, this standard implements GB/T 11022- The provisions of.2011. In order to simplify the expression of the same requirements, the chapter number of this standard is the same as GB/T 11022-2011. For supplements in the same The new terms under the heading are numbered starting from 101. 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. Participated in the drafting of this standard. Xi'an High Voltage Electric Apparatus Research Institute Co., Ltd., East China Branch of State Grid Co., Ltd., Tsinghua University, Xi'an Xidian Switch Electric Co., Ltd., Xi'an Xidian High Voltage Switch Co., Ltd., Pinggao Group Co., Ltd., Henan Pinggao Electric Co., Ltd. Co., Ltd., New Northeast Electric Group High Voltage Switchgear Co., Ltd., New Northeast Electric Group Super High Pressure Co., Ltd. The main drafters of this standard. Cui Boyuan, Wang Ninghua, Wang Chengyu, Cui Jingchun, Gu Nihong, Chen Yun. Participated in the drafting of this standard. Li Peng, Liu Zhaolin, Xu Guozheng, Yuan Continental, Zhang Meng, Li Xinyi, Wang Chuanchuan, Han Shuzhen, Fang Wei, Wang Zhanjie, Yu Liangqing, Sun Eternity, and Yan Yan. The previous versions of the standards replaced by this standard are. ---GB /Z 24837-2009. 1100kV high voltage AC disconnector and grounding switch

1 Overview

1.1 Scope This standard specifies the conditions, ratings, design and structure, test and selection of 1100kV high voltage AC disconnector and earthing switch. Use guidelines, transportation, storage, installation, operation and maintenance. This standard is applicable to AC disconnectors and grounders designed to be installed outdoors, rated voltage 1100kV and operating frequency 50Hz. switch. 1.2 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 1804-2000 General tolerances and tolerances for linear and angular dimensions without tolerances GB/T 1984-2014 high voltage AC circuit breaker GB/T 2900.20-2016 Electrotechnical terminology high voltage switchgear and control equipment GB/T 4208-2017 enclosure protection grade (IP code) GB/T 4473-2008 Synthesis test of high voltage AC circuit breaker GB/T 7354-2003 Partial discharge measurement GB/T 7674-2008 Gas insulated metal-enclosed switchgear with rated voltage of 72.5kV and above GB/T 11022-2011 Common technical requirements for high voltage switchgear and control equipment standards GB/T 26218 (all parts) Selection and sizing of high-voltage insulators used under dirty conditions

2 normal and special conditions of use

2.1 Overview According to the provisions of 2.1 of GB/T 11022-2011, and supplemented as follows. For components of the isolating switch and grounding switch used in gas insulated metal-enclosed switchgear, such as pressure relief devices and pressure Force and density monitoring devices may be affected by altitude. The manufacturer shall take appropriate measures if necessary. 2.2 Normal use conditions 2.2 of GB/T 11022-2011 is applicable. 2.3 Special conditions of use 2.3 of GB/T 11022-2011 applies.

3 Terms and definitions

The following terms and definitions as defined in GB/T 11022 apply to this document.

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