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GB/T 24838-2018 English PDF

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GB/T 24838-2018: 1 100 kV high-voltage alternating-current circuit-breakers
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GB/T 24838-2018English2039 Add to Cart 12 days [Need to translate] 1 100 kV high-voltage alternating-current circuit-breakers Valid GB/T 24838-2018

PDF similar to GB/T 24838-2018


Standard similar to GB/T 24838-2018

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

Basic data

Standard ID GB/T 24838-2018 (GB/T24838-2018)
Description (Translated English) 1 100 kV high-voltage alternating-current circuit-breakers
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K43
Classification of International Standard 29.240.10
Word Count Estimation 102,142
Date of Issue 2018-09-17
Date of Implementation 2019-04-01
Older Standard (superseded by this standard) GB/Z 24838-2009
Regulation (derived from) National Standard Announcement No. 11 of 2018
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 24838-2018: 1 100 kV high-voltage alternating-current circuit-breakers

---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.
1 100 kV high-voltage alternating-current circuit-breakers ICS 29.240.10 K43 National Standards of People's Republic of China Replace GB /Z 24838-2009 1100kV high voltage AC circuit breaker 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 2 normal and special conditions of use 1 3 Terms and Definitions 2 4 rating 16 4.1 Overview 16 4.2 Rated voltage (Ur) 16 4.3 rated insulation level 17 4.4 Rated frequency (fr) 17 4.5 Rated current (Ir) and temperature rise 17 4.6 Rated short-time withstand current (Ik) 17 4.7 Rated peak withstand current (Ip) 17 4.8 Rated short circuit duration (tk) 17 4.9 Rated power supply voltage (Ua) for the opening and closing devices and auxiliary and control circuits 17 4.10 rated power frequency of the closing, opening and auxiliary circuits 18 4.11 Rated filling level of gas or liquid for insulation, operation and/or breaking 18 4.101 rated short-circuit breaking current (Isc) 18 4.102 Transient recovery voltage associated with rated short-circuit breaking current 18 4.103 rated short circuit closing current 20 4.104 Rated operation sequence 20 4.105 Near-zone fault characteristics 20 4.106 rated out-of-step closing and breaking current 21 4.107 rated capacitive opening and closing current 21 4.108 Opening and closing the no-load transformer 21 4.109 Open combined reactor 21 4.110 rated time parameter 21 4.111 Number of mechanical stability operations 22 4.112 Electrical life of circuit breakers 22 4.113 points, closing resistors and auxiliary fractures 22 4.114 noise level 22 5 Design and Structure 22 5.1 Requirements for liquids in circuit breakers 22 5.2 Requirements for gases in circuit breakers 22 5.3 Circuit breaker grounding 22 5.4 Auxiliary and control equipment 23 5.5 Power closing 23 5.6 Energy storage closing 23 5.7 Manpower-free operation 23 5.8 Trip unit operation 24 5.9 Low pressure and high pressure locking device 24 5.10 Nameplate 24 5.11 Interlocking device 25 5.12 Position indication 25 5.13 Degree of protection of the enclosure 25 5.14 Creepage distance 25 5.15 Gas Seal 26 5.16 Liquid seal 26 5.17 Flammability 26 5.18 Electromagnetic Compatibility (EMC) 26 5.19 X-ray emission 26 5.20 Corrosion 26 5.101 General requirements for operation 26 5.102 Pressure Limits for Operating Fluids 26 5.103 Operating mechanism 26 5.104 Secondary Communication Protocol 27 5.105 Other requirements 27 6 type test 28 6.1 General 28 6.2 Insulation test and partial discharge measurement 29 6.3 Radio interference voltage (riv) test 31 6.4 Measurement of main loop resistance 31 6.5 Temperature rise test 31 6.6 Short-time withstand current and peak withstand current test 31 6.7 Inspection of the degree of protection 31 6.8 Sealing test 31 6.9 Electromagnetic Compatibility (EMC) Test 31 6.10 Additional tests for auxiliary and control loops 31 6.101 Mechanical and Environmental Testing 32 6.102 Earthquake Resistance Test 39 6.103 Closure, breaking and opening and closing tests 39 6.104 Near-zone fault test 43 6.105 Out of step closure and breaking test 43 6.106 Additional breaking test for high TRV caused by line faults with series compensation devices 44 6.107 Capacitive current opening and closing test 44 6.108 Circuit breaker (E2 class) electrical life test 46 6.109 Split and closing resistance heat capacity test 47 6.110 Opening and closing reactor test 47 7 Factory test 47 7.1 Insulation test and partial discharge measurement of the main circuit 47 7.2 Test of auxiliary and control loops 47 7.3 Measurement of main loop resistance 48 7.4 Sealing test 48 7.5 Design and visual inspection 48 7.101 Mechanical operation and mechanical properties test 48 7.102 SF6 gas humidity measurement 49 8 Selection guidelines for circuit breaker operation 49 8.101 Overview 49 8.102 Selection of rated values under operating conditions 50 8.103 Selection of rated values under fault conditions 51 8.104 Choice of electrical life 52 8.105 Selection of charging current opening and closing of no-load line 52 9 Information provided with inquiries, tenders and orders 52 9.101 Information provided with the enquiry and order 52 9.102 Information provided with the tender 53 10 Transportation, storage, installation, operation and maintenance rules 54 10.1 Conditions of transport, storage and installation 54 10.2 Installation 55 10.3 Field test 59 10.4 Running 60 10.5 Maintenance 60 11 Security 60 12 Product impact on the environment 60 Appendix A (Normative) Calculation of transient recovery voltage for near-field faults based on rated characteristics 84 Appendix B (normative appendix) Tolerance of test parameters in type test 89

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB /Z 24838-2009 "1100kV high voltage AC circuit breaker technical specifications", and GB /Z 24838-2009 phase The main differences are as follows. --- Added terms and definitions such as "general terminology, switchgear, components of circuit breakers, operation, characteristic parameters" (see section 3) chapter); --- Added a number of necessary diagrams (see Figures 1 to 26); --- Added "Representation of Transient Recovery Voltage Waveform (TRV)" and revised the article number (see 4.102); --- Increased the high TRV value and additional breaking test requirements for line faults considering the use of series compensation devices (see 6.106); --- Modified the representation of the ability to open and combine reactors, from capacity to current value (see 4.109, GB /Z 24838- 5.20 of.2009); --- Revised the relevant requirements for terminal static load test (see 6.101.4.2, 7.12.4 of GB /Z 24838-2009); --- Increased the type of test for opening and closing reactors (see 6.110); --- Revised the factory test power frequency withstand voltage duration, increased from 1min to 5min, and previously carried out 635kV old Practice test for 5min (see 7.1, 9.1 of GB /Z 24838-2009); --- Increased the total number of combined operations in the factory test should not be less than.200 times, and the last 20 times of the last 100 times and the last 100 times The last 20 times are the requirements of 10 reclosing operations (see 7.101); ---Modified the requirements for the insulation test of the main circuit of the circuit breaker in the tank circuit breaker or GIS in the "Handover Inspection and Test Procedure" (See 10.2.102.3.1, 12.2.2.3.1 of GB /Z 24838-2009); --- Revised the clause number of the "Field Test" (see 10.3, Chapter 8 of GB /Z 24838-2009); --- Added "product environmental impact" (see Chapter 12); --- Added "calculation of transient recovery voltage for near-field faults based on rated characteristics" (see Appendix A); --- Added "Tolerance of test parameters in type tests" (see Appendix B). This standard should be used together with GB/T 11022-2011, unless otherwise specified in the standard, this standard refers to GB/T 11022-2011. 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 supplement under the same reference heading The new terms 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, Pinggao Group Co., Ltd., Henan Pinggao Electric Co., Ltd., Xi'an Xidian Switch Electric Co., Ltd., New Northeast Electric Group Guan Equipment Co., Ltd., New Northeast Electric Group Super High Pressure Co., Ltd., Xi'an Xidian High Voltage Switch Co., Ltd. The main drafters of this standard. Gu Nihong, Sun Gang, Meng Qingqiang, Han Xiancai, Cui Boyuan, Wang Chengyu, Cui Jingchun. Participated in the drafting of this standard. Li Peng, Yuan Continental, Xu Guozheng, Liu Zhaolin, Li Zhibing, Zhang Pengfei, Zhang Meng, Li Xinyi, Han Shuzhen, Fang Wei, Yu Liangqing, Sun Eternity, Chen Yun, Wang Chuanchuan. The previous versions of the standards replaced by this standard are. ---GB /Z 24838-2009. 1100kV high voltage AC circuit breaker

1 Overview

1.1 Scope This standard specifies the conditions of use, rating, design and structure, test, selection guidelines, transportation, and 1100kV high voltage AC circuit breakers. Requirements for storage, installation, operation and maintenance. This standard is applicable to UHV power designed to be installed outdoors or indoors and operated at a frequency of 50 Hz and a nominal voltage of 1000 kV. High voltage AC circuit breaker in the system. This standard also applies to the operating mechanism of the 1100kV circuit breaker and its auxiliary equipment. Circuit breakers with predetermined inter-pole different durations are not included in the scope of this standard except for single-pole auto-reclosing circuit breakers. A bypass circuit breaker in parallel with the line series capacitor and its protective equipment is not included in the scope of this standard. 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 1984-2014 high voltage AC circuit breaker GB/T 2900.20-2016 Electrotechnical term high voltage switchgear GB/T 4473-2008 Synthesis test of high voltage AC circuit breaker GB/T 11022-2011 Common technical requirements for high voltage switchgear and control equipment standards GB/T 12022-2014 industrial sulfur hexafluoride GB/T 13540-2009 Seismic requirements for high voltage switchgear and control equipment GB/T 29489-2013 Inductive load opening and closing of high voltage AC switchgear and control equipment

2 normal and special conditions of use

2.1 Overview 2.1 of GB/T 11022-2011 applies. 2.2 Normal use conditions 2.2 of GB/T 11022-2011 is applicable and supplemented as follows. a) ambient air temperature is up to 40 ° C, and the average temperature measured within 24 h does not exceed 35 ° C; The ambient air temperature is at least -10 ° C, -25 ° C, -30 ° C, -40 ° C. b) Altitude. 1000m. c) The effects of solar radiation should be considered. The solar radiation intensity is based on 1000 W/m2. d) Nominal creepage ratio. 1) The ground-to-ground creepage ratio of the Class III pollution area shall not be less than 25mm/kV; 2) The ground-to-ground creepage ratio of the Class IV contaminated area shall not be less than 31mm/kV. The actual creepage ratio is the above-mentioned nominal creepage ratio value multiplied by the applied coefficient a, a value is shown in Table 1.

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