GB/T 17702-2021 English PDF

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GB/T 17702-2021: Capacitors for power electronics
Status: Valid

GB/T 17702: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17702-2021	794	Add to Cart	7 days	Capacitors for power electronics	Valid
GB/T 17702-2013	RFQ	ASK	4 days	Capacitors for power electronics	Obsolete
GB/T 17702.1-1999	919	Add to Cart	4 days	Power electronic capacitors. Part 1: General	Obsolete

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Basic data

Standard ID: GB/T 17702-2021 (GB/T17702-2021)
Description (Translated English): Capacitors for power electronics
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K42
Word Count Estimation: 42,461
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 17702-2021: Capacitors for power electronics

---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.
Capacitors for power electronics ICS 31.060.70 CCSK42 National Standards of People's Republic of China Replace GB/T 17702-2013 Power Electronic Capacitor (IEC 61071.2017, IDT) Released on 2021-05-21 2021-12-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Preface Ⅴ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Conditions of use 7 4.1 Normal use conditions 7 4.1.1 Overview 7 4.1.2 Altitude 7 4.1.3 Maximum operating temperature (θmax) 7 4.1.4 Operating temperature under forced cooling 7 4.2 Abnormal use conditions 7 5 Quality requirements and tests 8 5.1 Test requirements 8 5.1.1 Overview 8 5.1.2 Test conditions 8 5.2 Test classification 8 5.2.1 Overview 8 5.2.2 Routine test 8 5.2.3 Type test 9 5.3 Capacitance and tanδ measurement 9 5.3.1 Measurement procedure 9 5.3.2 Allowable deviation of capacitance 9 5.3.3 Requirement of loss tangent (tanδ) 9 5.4 Loss tangent (tanδ) measurement 10 5.4.1 Measurement 10 5.4.1.1 Overview 10 5.4.1.2 AC capacitor 10 5.4.1.3 DC capacitor 10 5.4.2 Loss tangent requirements 10 5.5 Voltage test between terminals 10 5.5.1 Overview 10 5.5.2 Routine test 10 5.5.3 Type test 10 5.6 AC voltage test between terminal and enclosure 11 5.6.1 Routine test 11 5.6.2 Type test 11 5.7 Internal discharge device test 11 5.8 Tightness test 11 5.9 Impulse discharge test 11 5.10 Thermal stability test 12 5.10.1 Overview 12 5.10.2 Measurement procedure 12 5.11 Self-healing test 13 5.12 Resonance frequency measurement 13 5.13 Environmental test 13 5.13.1 Temperature changes 13 5.13.2 Constant damp heat test 13 5.14 Mechanical test 14 5.14.1 Terminal mechanical test 14 5.14.2 Visual inspection 14 5.14.3 Vibration and shock 14 5.15 Durability test 14 5.15.1 Overview 14 5.15.2 Pre-treatment of the unit before the test 14 5.15.3 Initial capacitance and loss tangent measurement 14 5.15.4 Durability test 15 5.15.5 Final capacitance and tanδ measurement 16 5.15.6 Acceptance criteria 16 5.16 Destruction test 16 5.16.1 Overview 16 5.16.2 Test sequence for AC capacitors 17 5.16.3 Test sequence for DC capacitors 18 5.17 Isolation test of internal fuse 19 5.17.1 Overview 19 5.17.2 Isolation requirements 20 5.17.3 Tolerance requirements 20 5.17.4 Test procedure 20 5.17.5 Capacitance measurement 21 5.17.6 Visual inspection 21 5.17.7 Voltage test 21 6 Overload 21 7 Safety requirements 22 7.1 Discharge device 22 7.2 Housing connection 22 7.3 Environmental protection 22 7.4 Other safety requirements 22 8 Sign 22 9 Installation and Operation Guidelines 23 9.1 General 23 9.2 Selection of rated voltage 23 9.3 Operating temperature 23 9.3.1 Overview 23 9.3.2 Installation 24 9.3.3 Abnormal cooling conditions 24 9.4 Special conditions of use 24 9.5 Overvoltage 24 9.6 Overcurrent 25 9.7 Switching and protection devices 25 9.8 Selection of creepage distance and electrical clearance 25 9.8.1 Creepage distance 25 9.8.2 Air gap 25 9.9 Connection 25 9.10 Parallel connection of capacitors 25 9.11 Series connection of capacitors 25 9.12 Magnetic losses and eddy currents 26 9.13 Protection guidelines for internal fuses and isolators inside capacitors 26 9.14 Guidelines for unprotected capacitors 26 Appendix A (informative) Waveform 27 Appendix B (Normative) Capacitor operating limit with sinusoidal voltage as a function of frequency at maximum temperature (θmax) 30 Appendix C (normative) Resonant frequency measurement method---Example 32 C.1 Method 1 32 C.2 Method 2 33 References 34 Figure 1 Destruction test circuit 17 Figure 2 DC voltage source N---type 1 19 Figure 3 DC voltage source N---type 2 19 Figure A.1 Waveform and its loop example 27 Figure B.1 Power supply conditions 30 Figure C.1 Measuring circuit 32 Figure C.2 The relationship curve between capacitor terminal voltage and power frequency 32 Figure C.3 Discharge current waveform 33 Table 1 Test voltage between terminals 10 Table 2 Terminal strength test 14 Table 3 Durability test 15 Table 4 Types of safety systems and destruction test methods 16 Table 5 Maximum allowable voltage 21

Foreword

This document is in accordance with GB/T 1.1-2020 "Guidelines for Standardization Part 1.Structure and Drafting Rules of Standardization Documents". To be drafted. This document replaces GB/T 17702-2013 "Power Electronic Capacitors", compared with GB/T 17702-2013, except for structural adjustment and compilation In addition to the editorial changes, the main technical changes are as follows. ---Modified the content of the scope (see Chapter 1, Chapter 1 of the.2013 edition); ---Updated normative reference documents (see Chapter 2, Chapter 2 of the.2013 edition); ---Added the terms and definitions of "safety protection", "thermal balance", "thermal time constant" and "hot spot temperature" (see Chapter 3); --- Deleted the time regulation in the impulse discharge test (see 5.9 in the.2013 edition); ---Further clarified the requirements for cooling temperature in the thermal stability test and measurement procedure, and aimed at pure AC capacitors with a single frequency The maximum reactive power is specified (see 5.10.2, 5.10.2 in the.2013 edition); ---Modified the test voltage value of the AC capacitor in the self-healing test, 1.5UN was revised to 2.15UN (see 5.11, 5.11 in the.2013 edition); ---Added the relevant provisions of the thermal balance and interruption voltage in the durability test, and clarified the "Final measurement of the ambient temperature and the initial measurement The deviation of the ambient temperature record of the quantity should be within ±2℃” (see 5.15, 5.15 of the.2013 edition); --- In the criterion of the destruction test, amend "Self-healing capacitors of isolated design or special non-isolated design" to "use fused isolation Self-healing capacitors designed to be separated” (see 5.16.2, 5.16.2 in the.2013 edition). The translation method used in this document is equivalent to IEC 61071.2017 "Power Electronic Capacitors". The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows. ---GB/T 2423.3-2016 Environmental Test Part 2.Test Method Test Cab. Constant Humidity Test (IEC 60068- 2-78.2012, IDT); ---GB/T 2423.10-2019 Environmental Test Part 2.Test Method Test Fc. Vibration (Sine) (IEC 60068-2- 6.2007, IDT); ---GB/T 2423.22-2012 Environmental Test Part 2.Test Method Test N. Temperature Change (IEC 60068-2-14. 2009, IDT); ---GB/T 2423.28-2005 Environmental testing of electrical and electronic products Part 2.Test method Test T. Soldering (IEC 60068-2-20.1979, IDT); ---GB/T 2423.60-2008 Environmental testing of electrical and electronic products Part 2.Test method Test U. Lead and integral Strength of body mounting parts (IEC 60068-2-21.2006, IDT); ---GB/T 5169.11-2017 Fire hazard test for electric and electronic products Part 11.Glow wire/hot wire basic test method Glow wire flammability test method (GWEPT) of finished products (IEC 60695-2-11.2014, IDT); ---GB/T 5169.12-2013 Fire hazard test of electric and electronic products Part 12.Glow wire/hot wire basic test method Glow-wire flammability index (GWFI) test method of materials (IEC 60695-2-12.2010, IDT); ---GB/T 13539.1-2015 Low-voltage fuses Part 1.Basic requirements (IEC 60269-1.2009, IDT); ---GB/T 14048.1-2012 Low-voltage switchgear and control equipment Part 1.General (IEC 60947-1.2011, MOD); ---GB/T 16935.1-2008 Insulation coordination of equipment in low-voltage systems Part 1.Principles, requirements and tests (IEC 60664- 1.2007, IDT). This document has made the following editorial changes. - "2.5UN" error in 5.11, it should be "2.5UN or 2.5UNDC", this document is revised to "2.5UN or 2.5UNDC"; ---5.15.2 "UN" is wrong, it should be "UN or UNDC", this document is revised to "UN or UNDC"; ---5.15.5, "±2?" is wrong, it should be "±2℃", this document is revised to "±2℃"; --- "UN" in Table 5 of Chapter 6 is wrong, it should be "UN or UNDC", this document is revised to "UN or UNDC". Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Power Capacitor Standardization Technical Committee (SAC/TC45). Drafting organizations of this document. Xi'an High Voltage Electrical Apparatus Research Institute Co., Ltd., Ningguo Yuhua Electrical Appliance Co., Ltd., Global Energy Internet Research Institute Co., Ltd., Xi'an Xidian Power Capacitor Co., Ltd., Shenzhen Sanhe Power Technology Co., Ltd., Xiamen Faraday Co., Ltd., Ningbo Xinrong Electrical Technology Co., Ltd., Guilin Power Capacitor Co., Ltd., Anhui Tongfeng Electronics Co., Ltd. Company, Wuxi Sunjing Power Capacitor Co., Ltd., State Grid Economic and Technical Research Institute Co., Ltd., Xi'an ABB Power Capacitor Co., Ltd., Herong Electric Co., Ltd., Ningbo Jiangbei Jiufang Herong Electric Co., Ltd., Wuxi Power Filter Co., Ltd., Lai En Weiye (Crane Wall) Electronic Technology Co., Ltd., Wuxi Chenrui New Energy Technology Co., Ltd., Rhein Technology (Shanghai) Co., Ltd., Sichuan Zhongxing Electronics Co., Ltd. Limited Liability Company, Anhui Feida Electric Technology Co., Ltd., New Northeast Electric Group Power Capacitor Co., Ltd., State Grid Zhejiang Electric Power Co., Ltd. Company Electric Power Research Institute, Anhui Huawei New Energy Co., Ltd., State Grid Zhejiang Electric Power Co., Ltd. Shaoxing Power Supply Company, State Grid Anhui Province Electric Power Research Institute, China Southern Power Grid Research Institute Co., Ltd., Anhui Yuanguang Electric Appliance Co., Ltd., Shanghai Yongjin Electric Group Co., Ltd., Shengye Electric Co., Ltd., Shanghai Haoyue Electric Co., Ltd., Nisshin Electric (Wuxi) Co., Ltd., Kebel Power Quality Technology (Shanghai) Co., Ltd., Nantong Pandi Electronic Technology Co., Ltd., Shanghai Dongrong Electric Co., Ltd., Xi'an Xinju Rong Capacitor Research Institute Co., Ltd., State Grid Jibei Electric Power Co., Ltd. Electric Power Research Institute, Foshan Xinyuan Electronics Co., Ltd., Guangdong Fengming Electronic Technology Co., Ltd., Zhejiang Taizhou Special Capacitor Co., Ltd., Nantong Linyu Electronics Co., Ltd., Nantong Dongfu Electric Co., Ltd., Wuxi Zhonghui Automotive Electronic Technology Co., Ltd., Anhui Hangrui Electronic Technology Co., Ltd., Zhixin Electronics (Xiamen) Co., Ltd., Guangdong Gateway Electronics Co., Ltd. The main drafters of this document. He Manchao, Chen Zhongyou, Zhao Xin, Dai Chaobo, Yuan Fuxing, Gao Qi, Lu Tao, Huang Shunda, Wei Zhongke, Chen Caiming, Li Zhaolin, Bao Junhua, Zuo Qianglin, Wu Fangjie, Guo Qingwen, Xiao Guo, Tong Kefeng, Sun Xiaowu, Li Huaiyu, Li Jiantao, Cai Jun, Ning Xiaobo, Fu Zhongxing, Ge Jinping, Zhang Jianping, Shi Bing, Wu Qian, Hu Zhongsheng, Chen Xiaoyu, Qin Shaorui, Jiang Junxiang, Xin Qingming, Liu Jing, Liu Huijun, Zhang Xinyu, Lin Wen, Wang Dong, Chen Rong, Xu Feng, Yao Yifeng, Ding Guocheng, Zhang Chenchen, Xu Tong, Zhao Chunsheng, Zhu Youyi, Yao Jiachao, Hua Lingping, Lu Shiming, Deng Guangzhao, Lu Wei, Zhang Jinglan, Ye Xiaohu, Xue Zefeng, Wang Zhandong, Song Kangsheng, Li Zhiguo, Jin Xiaogen, Mao Hao, Wu Hongliang, Yuan Jing, Li Guisheng, Ding Mingjun, Zhu Hailin, Zhu Yan, Liang Yamiao. The previous versions of this document and the documents replaced are as follows. ---First released in.1999 as GB/T 17702.1-1999 and GB/T 17702.2-1999; --- When it was first revised in.2013, GB/T 17702.1-1999 and GB/T 17702.2-1999 were merged into GB/T 17702-2013; ---This is the second revision. Power Electronic Capacitor

1 Scope

This document applies to capacitors for power electronics applications. The operating frequency of the system using these capacitors is usually lower than 15kHz, and the pulse frequency may reach 5 times the operating frequency~ 10 times. This document divides capacitors installed as components in the case into AC capacitors and DC capacitors. This document covers a wide range of capacitor technologies and their multiple applications, such as. overvoltage protection, DC and filtering, switching circuits, energy storage And auxiliary converter, etc. This document does not apply to. ---Capacitors for induction heating devices operating at frequencies below 50kHz (see IEC 60110-1 and IEC 60110-2); ---Capacitors for motors and similar applications (see IEC 60252-1 and IEC 60252-2); ---Capacitors used in the circuit to block one or more harmonics in the power grid; ---Small AC capacitors for fluorescent lamps and discharge lamps (see IEC 61048 and IEC 61049); ---Capacitors for suppressing radio interference (see IEC 60384-14); ---Shunt capacitors for AC power systems with a nominal voltage above 1000V (see IEC 60871-1 and IEC TS60871-2); --- Self-healing shunt capacitors for AC power systems with a nominal voltage of 1000V and below (see IEC 60831-1 and IEC 60831-2); ---Non-self-healing shunt capacitors for AC power systems with a nominal voltage of 1000V and below (see IEC 60931-1 and IEC 60931-2); ---Electronic capacitors not used in power circuits; ---Series capacitors for power systems (see IEC 60143); ---Coupling capacitor and capacitive voltage divider (see IEC 60358-1); --- Microwave oven capacitors (see IEC 61270-1); ---Capacitors for rail transit [see IEC 61881 (all parts)]. Application examples are given in 9.1.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. IEC 60068-2-6 Environmental Testing Part 2-6.Test Test Fc. Vibration (Sine) (Environmentaltesting-Part 2-6.Tests-TestFc.Vibration(sinusoidal)] IEC 60068-2-14 Environmental Testing Part 2-14.Test Test N. Temperature Change (Environmentaltesting-Part 2-14.Tests-TestN.Changeoftemperature) IEC 60068-2-20 Environmental Testing Part 2-20.Test Test T. Solderability and resistance to soldering heat of components with leads Test methods (Environmentaltesting-Part 2-20.Tests-TestT.Testmethodsforsolderabilityandresist- ancetosolderingheatofdeviceswithleads) IEC 60068-2-21 Environmental Test Part 2-21.Test Test U. Strength of Leading Ends and Overall Mounting Parts ......

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