GB/T 12747.2-2017 English PDF

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GB/T 12747.2-2017: Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1 000 V -- Part 2: Ageing test, self-healing test and destruction test
Status: Valid

GB/T 12747.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 12747.2-2017	179	Add to Cart	3 days	Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1 000 V -- Part 2: Ageing test, self-healing test and destruction test	Valid
GB/T 12747.2-2004	359	Add to Cart	3 days	Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1000 V -- Part 2: Ageing test, self-healing test and destruction test	Obsolete

Similar standards

GB/T 11022   GB/T 11024.4   GB/T 11024.2   GB/T 22582   GB/T 19749.4   GB/T 12747.1   

Basic data

Standard ID: GB/T 12747.2-2017 (GB/T12747.2-2017)
Description (Translated English): Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1 000 V -- Part 2: Ageing test, self-healing test and destruction test
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K42
Classification of International Standard: 31.060.70
Word Count Estimation: 9,977
Date of Issue: 2017-07-31
Date of Implementation: 2018-02-01
Older Standard (superseded by this standard): GB/T 12747.2-2004
Quoted Standard: GB/T 12747.1-2017
Adopted Standard: IEC 60831-2-2014, IDT
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard applies to capacitors conforming to GB / T 12747.1-2017 and specifies the aging test, self-healing test and destruction test requirements of these capacitors.

GB/T 12747.2-2017: Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1 000 V -- Part 2: Ageing test, self-healing test and destruction test

---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.
Shunt power capacitors of the self-healing type for acsystems having a rated voltage up to and including 1 000 V. Part 2. Ageing test, self-healing test and destruction test ICS 31.060.70 K42 National Standards of People's Republic of China Replacing GB/T 12747.2-2004 Nominal voltage 1000V and below AC power system Self-healing shunt capacitor Part 2. Aging test, self healing test And destruction test Part 2.Ageingtest, self-healingtestanddestructiontest (IEC 60831-2.2014, IDT) 2017-07-31Published.2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Preface Ⅰ 1 Scope 1 2 Normative references 1 17 Aging test 1 17.1 Conditions 1 17.1.1 Overview 1 17.1.2 Test in forced circulation of air 1 17.1.3 Test in liquid tank 2 17.2 Test Procedure 2 17.3 Test Requirements 2 18 self-healing test 3 19 destruction test 3 19.1 Test Procedure 3 19.2 Test Requirements 5 Appendix A (informative) self-healing breakdown testing equipment for practical use 6 Figure 1 to destroy the test circuit 4 Figure A.1 self-healing testing equipment example 6

Foreword

GB/T 12747 "1000V and below nominal voltage AC power system with self-healing shunt capacitor" is divided into two parts. --- Part 1. General guidelines for performance, testing and quota safety installation and operation guidelines; --- Part 2. Aging test, self-healing test and destruction test. This section GB/T 12747 Part 2. This section according to GB/T 1.1-2009 given rules. This Part replaces GB/T 12747.2-2004 "self-healing shunt capacitors for AC power systems rated voltage 1kV and below Part 2. Aging test, self-healing test and failure test ", compared with GB/T 12747.2-2004 main technical changes are as follows. --- Updated normative references; --- Before the aging test discharge cycle clear at room temperature (see 17.1.1); --- Aging test in the test program adds "taking into account the deviation of the supply voltage, the test voltage should be the entire duration of the test Average "requirement [see 17.2a)]; --- Increased self-healing test DC voltage can be used for testing (see Chapter 18); --- Self-healing test will be "voltage reached 3.5UN, the breakdown occurred less than 5 times, you can extend the test time until 5 times hit Wear so far. "To" When the voltage reaches the above voltage limit and lasted 10s, if the number of self-healing is still less than 5 times, But as long as there is at least one self-healing, the trial should be ended. "(See chapter 18, chapter 18 of the.2004 edition); --- Revised self-healing test acceptance conditions will be "before and after the test should be measured capacitance, the value shall not be significantly changed" to "test The capacitance and tan δ should be measured before and after "and the formula for checking tan δ is given (see Chapter 18, Chapter 18 of the.2004 edition). --- Will destroy the test procedure When the switch H is placed in position 3, the original standard "to maintain 3s ~ 5s" is amended to "at least keep 3s "while adding another test option [see 19.1c),.2004 edition 19.1c)]. This section uses the translation method identical with the international standard IEC 60831-2.2014 "rated voltage 1000V and below AC power system Self - healing shunt capacitors - Part 2. Aging test, self - healing test and destruction test "(in English). This part is proposed by China Electrical Equipment Industry Association. This part of the National Power Capacitor Standardization Technical Committee (SAC/TC45) centralized. This part of the drafting unit. Xi'an High Voltage Electrical Apparatus Research Institute Co., Ltd., Zhejiang Jiushe Electric Co., Ltd., Ningbo Xin Rong Electric Technology Co., Ltd., Hefei Warwick Automation Co., Ltd., Xi'an West Power Capacitor Co., Ltd., Zhejiang Wald Power Electronics Co., Ltd. Division, Xiamen Farah Electronics Co., Ltd., referring to the Group Co., Ltd. State Grid Anhui Electric Power Company Electric Power Research Institute, Shenzhen Sanhe Power Technology Co., Ltd., Zibo Leibo Power Capacitor Co., Ltd., Anhui Tongfeng Electronics Co., Ltd. capacitor company, Delixi Gas Co., Ltd., New Northeast Electric Group Power Capacitor Co., Ltd., Shanghai Yong Jin Electric Group Co., Ltd., Nantong Pan-electronic technology have Co., Ltd., Jiangsu Modern Power Technology Co., Ltd., Shanghai Haoyue Electric Co., Ltd., Ningguo Yuhua Electric Co., Ltd., Zhejiang Weiss Kang Electric Co., Ltd., Xi'an Huachuo Power Capacitor Co., Ltd. The main drafters of this section. Wang Yu Jing, Fang Jinlan, Yuan Fuxing, Zhao can cover, Tian Enwen, He full tide, Chen Caiming, Liu Jing, Zhang Yanzhu, Jiang Junxiang, Gao Qi, Hu Guofu, Huang Shunda, Wang Peibo, Wu Qun, Tao Mei, Lv Tao, Ma Feng, Bao Junhua, Mei Gengng, Zhang Zhuping, Zhao Fuqing, Zhao Xin, Zhu Youyi, Song Yufeng, Xu Feng, Zhan Huan, yellow broken three, Dai Yong, Zhao Yang, especially Jian Song. This part replaces the standards previously issued as. --- GB/T 12747-1991; --- GB/T 12747.2-2004. Nominal voltage 1000V and below AC power system Self-healing shunt capacitor Part 2. Aging test, self healing test And destruction test

1 Scope

This section GB/T 12747 applies to capacitors in line with GB/T 12747.1-2017, and provides for the aging test of these capacitors Inspection, self-healing and destructive testing requirements. Note The numbers in this part of the chapter and Article GB/T 12747.1-2017 in the corresponding.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. Self - healing shunt capacitors for ac power systems of nominal voltage 1000V and below - Part 1. GB/T 12747.1-2017. General Rules for Performance, Testing and Quorum Requirements for Installation and Operation (IEC 60831-1-2014, IDT) 17 Aging test 17.1 Conditions 17.1.1 Overview Aging Tests During the first step [17.2a)] and the third step [17.2c)], the temperature of the cell shell shall be the average of the cells within 24h The maximum temperature (see GB/T 12747.1-2017, Table 1) plus the same unit measured at the end of the thermal stability test case temperature and cold But the difference between the air temperature. The second step of the aging test [17.2b)] should be carried out at room temperature. Both test methods described below ensure that the temperature of the capacitor case remains constant during the test. Both methods are considered equivalent. Unsealed units should be tested in forced circulation air. 17.1.2 Test in forced circulation of air The capacitor unit is placed in a closed box with hot air circulation, air circulation speed of the box should be able to make the temperature at each point in the closed box Difference does not exceed ± 2 ℃. Automatic adjustment of the temperature of the closed box with temperature-sensitive components should be placed on the surface of the capacitor case from the bottom up a quarter of the total Three places. Capacitors should be placed upright with their terminals upright. When multiple capacitors are tested together, there should be sufficient spacing between the capacitors to provide sufficient uniformity of temperature. After placing the capacitor in the unheated enclosure, adjust the thermostat to the temperature specified in 17.1.1. The enclosure is then heated to a steady state with the capacitor not energized. When the enclosure temperature of the capacitor reaches the specified temperature With a deviation of ± 2 ° C), it is considered that the closed box has reached thermal stability. ......

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