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GB/T 47158-2026: Shunt power capacitors of the self-healing type for AC systems having a rated voltage above 1 000 V
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GB/T 47158-2026: Shunt power capacitors of the self-healing type for AC systems having a rated voltage above 1 000 V

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ICS 31.060.70 CCSK42 National Standards of the People's Republic of China For AC systems with a nominal voltage of 1000V or higher Self-healing parallel power capacitors (IEC 63210.2021, MOD) Published on 2026-02-27 Implemented on June 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface VII 1.Scope 1 2 Normative References 1 3.Terms and Definitions 2 4.Usage conditions 5. 4.1 Normal operating conditions 5 4.2 Abnormal usage conditions 6 5.Quality and Testing Requirements 6. 5.1 General Rules 6 5.2 Test Conditions 6 6.Test Classification 6.1 Routine Tests 6 6.2 Type testing and design testing 7 6.3 Acceptance Test 7 7.Capacitance Measurement (Routine Test) 8. 7.1 Measurement Procedure 8 7.2 Capacitance deviation 8 8.Capacitor Loss Tangent (tanδ) Measurement (Routine Test) 8.1 Measurement Procedure 8.2 Capacitor Loss Tangent (tanδ) Requirement 8 9.Inter-terminal voltage test 9.1 General Rules for Routine Testing 9.2 AC Test 9 9.3 DC Test 9 9.4 Type Testing 9 10.AC voltage test between terminals and housing 9 10.1 Routine Tests 9 10.2 Type Testing 10 11 Internal Discharge Device Testing (Routine Test) 10 12.Sealing test (routine test) 10 13 Thermal stability test (type test) 11 13.1 Overview 11 13.2 Measurement Procedure 11 14.Measurement of capacitor loss tangent (tanδ) at high temperature (type test) 12 14.1 Measurement Procedure 12 14.2 Requirement 12 15.Lightning impulse voltage test between terminals and enclosure (type test) 12 16 Overvoltage Test (Design Test) 12 16.1 General Rules 12 16.2 Stabilization treatment of samples before testing 13 16.3 Test Procedure 13 16.4 Acceptance Criteria 13 16.5 Validity of the experiment 13 16.5.1 General Rule 13 16.5.2 Component Design 13 16.5.3 Experimental Unit Design 13 16.5.4 Overvoltage waveform 14 17 Short-circuit discharge test (type test) 14 18 Self-healing test (type test) 15 18.1 General Rules 15 18.2 Test Procedure 15 18.3 Acceptance Criteria 15 19.Destructive Testing (Designed Experiments) 15 19.1 General Rules 15 19.2 Test Procedure for Capacitors Without Active Monitoring Safety Devices (Internal Protection) 16 19.3 Acceptance Criteria 16 19.4 Test Procedures for Capacitors with Active Monitoring Safety Devices (External Protection) 16 19.5 Acceptance Criteria 17 20 Insulation level 17 20.1 Standard insulation value 17 20.2 General Requirements 18 20.2.1 General Rule 18 20.2.2 Adjacent insulating components and equipment 18 20.2.3 Ground-insulating capacitor 18 20.2.4 Neutral point grounding capacitor 19 20.3 Test between capacitor unit terminals and housing 19 20.4 Capacitors in a Single-Phase System 19 21 Overload --- Maximum permissible voltage 19 21.1 Long-term voltage 19 21.2 Operating overvoltage 20 22 Overload --- Maximum permissible current 20 23 Safety requirements for discharge devices 20 24 Safety requirements for enclosure connections 20 25 Environmental protection safety requirements 21 26 Other safety requirements 21 27.Markings of capacitor cells 21 27.1 Nameplate 21 27.2 Standardized Connection Symbols 21 27.3 Warning sign 22 28.Markings for capacitor banks 22. 28.1 Instruction manual or nameplate 22 28.2 Warning sign 22 29 Installation and Operation Guidelines 22 29.1 General Rule 22 29.2 Selection of Rated Voltage 23 29.3 Operating temperature 23 29.3.1 General Rule 23 29.3.2 Installation 23 29.3.3 High ambient air temperature 24 29.4 Special Usage Conditions 24 29.5 Overvoltage 24 29.5.1 General Rule 24 29.5.2 Switch breakdown due to heavy impact 24 29.5.3 Lightning 24 29.5.4 Self-excitation of electric motors 24 29.5.5 Star-Delta Start 25 29.5.6 Selection of Capacitor Units 25 29.6 Overcurrent 25 29.6.1 Continuous overcurrent 25 29.6.2 Transient overcurrent 25 29.7 Switches and protective devices 26 29.7.1 Tolerance Requirements 26 29.7.2 Circuit breakers without repeated breakdown 26 29.7.3 Relay Setting 26 29.8 Selection of Insulation Level 26 29.8.1 Overview 26 29.8.2 Altitude exceeding 1000m 27 29.8.3 The Influence of the Capacitor Itself 27 29.8.4 Overhead ground wire 29 29.9 Selection of Creepage Distance and Air Clearance 29 29.9.1 Creepage Distance 29 29.9.2 Air gap distance 29 29.10 The capacitor is connected to a system with audio remote control. 32 Appendix A (Normative) Requirements for the Design of Comparable Components and Test Units 33 A.1 Test Element Design Criteria 33 A.2 Experimental Unit Design 33 Appendix B (Informative) Self-healing breakdown testing equipment available for practical use 34 Appendix C (Normative) Test Requirements and Application Guidelines for External Fuses and Units Protected by External Fuses 35 C.1 General Rule 35 C.2 Performance Requirements 35 C.3 Fuse Test 35 C.4 Guidelines for Coordination of Fuse Protection 35 C.4.1 General Rule 35 C.4.2 Protection Sequence 36 C.5 Selection of Fuse 36 C.5.1 General Rule 36 C.5.2 Non-current limiting fuse 36 C.5.3 Current-limiting fuse 36 C.6 Fuse User-Required Information 37 Appendix D (Informative) Calculation Formulas for Capacitors and Devices 38 D.1 Calculate the three-phase capacitor capacity using the three capacitances measured between every two line terminals. 38 D.2 Resonant frequency 38 D.3 Voltage increased by 38 D.4 Surge 39 D.4.1 When a single capacitor bank with the same reactance rate is connected or additional capacitors are connected, 39 D.4.2 The reactance of the energized capacitor bank differs from that of the operating capacitor bank. 39 D.5 Discharge resistor 39 in single-phase unit D.6 Discharge time to 10% of rated voltage. 40 seconds References 41 Figure 1.Duration and amplitude limits of the overvoltage cycle. Figure 2.Ground-insulated capacitor bank 28 Figure 3.Capacitor bank insulated from ground (casing grounded) 28 Figure 4 Grounded capacitor bank 28 Figure 5.Relationship between air gap distance and AC withstand voltage 31 Figure B.1 Example of a self-healing detection device 34 Table 1.Upper limit of temperature range (using letter codes) 5 Table 2 Ambient air temperature for thermal stability test 11 Table 3 Standard Insulation Level 17 Table 4 Permissible Operating Voltage Levels 19 Table 5 Insulation Requirements 27 Table 6 Specific creepage distance 29 Table 7 Relationship between standard rated lightning impulse withstand voltage and minimum air gap distance (from Table A.1 of GB/T 311.1-2012)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document is modified to adopt IEC 63210.2021 "Self-healing parallel power capacitors for AC systems with nominal voltage above 1000V". Compared with IEC 63210.2021, this document has undergone the following structural adjustments. ---Removed f) and g) of A.1 in Annex A of IEC 63210.2021, and the subsequent column numbers are automatically moved forward. The technical differences between this document and IEC 63210.2021, and the reasons therefor, are as follows. a) IEC 60071-1.2019 has been replaced with the normatively referenced GB/T 311.1-2012 to adapt to my country's technical requirements (see GB/T 311.1-2012). 29.9.2); b) IEC 60071-2.1996 has been replaced with the normatively referenced GB/T 311.2-2013 to adapt to my country's technical conditions (see...). 29.9.2); c) IEC 60549 has been replaced with the normatively referenced GB/T 15166.4 to adapt to my country's technical requirements (see Appendix C); d) IEC 60060-1 has been replaced with the normatively referenced GB/T 16927.1 to adapt to my country's technical requirements (see 10.2 and section 1). Chapter 15); e) The clause 5.2 in IEC 63210.2021, which states that "for capacitors with a rated frequency below 50 Hz, the frequency should be 50 Hz or 60 Hz", has been removed. The description of "Tests and measurements shall be conducted unless otherwise agreed between the manufacturer and the purchaser" is provided above, as this provision has already been covered (see [link to relevant document]). 5.2); f) The "energy flux density per unit area" in section 6.2 of IEC 63210.2021 has been removed, as it is not suitable for practical use in my country (see section 6.2); g) The terms "plastic" and "non-conductive" in the "AC voltage test between terminals and housing" have been changed to "insulating" to standardize the terminology and facilitate application and understanding. (See Chapters 10 and 15); h) The requirement for "in the uncoated state" in Chapter 12 of IEC 63210.2021 has been removed to comply with actual test operation requirements; i) The concept of tanδ0 in thermal stability tests has been added, "tanδ0 - value before the test", to facilitate reading and understanding (see Chapter 13); j) The wording regarding the range of deviation variation has been revised to better reflect actual judgment requirements and align with other similar standards, including. ● The terminal voltage test should be changed to "The capacitance deviation caused by this test should be within the range of -0.5% to 0.5%." The range of tanδ deviation caused by the experiment should be -30% to 30% (see Chapter 9); ● The thermal stability test has been revised to "For capacitance deviation variation range, it should be -2% to 2%; for loss tangent tanδ..." The deviation variation range should not exceed 1.2tanδ0 1×10-4 (see Chapter 13); ● In the overvoltage test, change it to "The total capacitance deviation variation range should be -2% to 2%" and "The tanδ deviation variation range should not be..." Greater than 1.3tanδ0 1×10⁻⁴ (see Chapter 16); ● In the short-circuit discharge test, the following changes were made. "The capacitance deviation variation range should be -2% to 2%" and "The tanδ deviation variation range should not be..." Greater than 1.2tanδ0 1×10⁻⁴ (see Chapter 17); ● In the self-healing test, the values were changed to "the capacitance deviation variation range should be -0.5% to 0.5%" and "the tanδ deviation variation range should not be..." "Greater than 1.1tanδ0 1×10-4", and the requirement for the sign of loss was removed (see Chapter 18); k) The requirement clause of IEC 63210.2021 has been amended to "Destructive testing may be performed using test specimens comparable to those used in the production of capacitors". The addition of "行" increases the options for actual operation (see 19.1); l) The "heating method" in the test procedure (internal protection) for "capacitors without active monitoring safety devices" has been modified to match the specifications of similar products. The product requirements must be consistent (see 19.2); m) The insulation levels in Tables 3 and 4 of IEC 63210.2021 have been removed because they are inconsistent with my country's national conditions; at the same time, according to my country's... In practice, Table 3, "Standard Insulation Level," was compiled using the values specified in Tables 4 and 5 of GB/T 311.1-2012. (See Table 3); n) The phrase "at a peak overvoltage of 1.9UN" has been changed to suit the actual situation in my country (see Chapter 23); o) The clause "The potential impact on personnel safety should always be taken into account" has been changed to a requirement clause, emphasizing the importance of safety (see section [number]). Chapter 24); p) The following content has been added to the "Marking of Capacitor Units" section to adapt to the actual situation in my country (see Chapter 27). ● b) Name of the capacitor unit; ● c) The model number of the capacitor unit; ● h) Measured capacitance; q) The following content has been added to the "Capacitor Bank Marking" section to adapt to the actual situation in my country (see Chapter 28). ● b) Name of the capacitor bank; ● c) The model number of the capacitor bank; r) The value of Um in the instruction manual and nameplate has been changed (see 28.1); s) Added the following to "Continuous Overcurrent". "The resonant current generated by the capacitor bank should not be connected when the transformer is under no-load conditions, as this could damage the capacitor." t) The content of "Air Gap Distance" has been changed (see 29.9.2); u) Removed f) from A.1 of IEC 63210.2021."For overvoltage cycle testing, the rated voltage and electrical stress shall be equal or..." For aging tests, the dielectric thickness should be within the range of 70% to 100%, but the rated electric field strength should be the same or higher. "some" (see A.1); v) The phrase "for overvoltage cycle test units" in section b) of A.2 "Test unit design" in IEC 63210.2021 has been removed (see A.2); w) Modified section d) of A.2 "Test Unit Design" to state "The insulation thickness of the shell should be the same or thinner" (see A.2); x) The calculation formula for “inrush” in D.4 has been changed (see D.4). The following editorial changes have been made to this document. a) The URLs for the ISO and IEC terminology databases have been removed from the "Terminology and Definitions" section; b) Add "Routine Trials" to the titles of Chapters 7, 8, 11, and 12; c) Note 3 of 8.1 has been amended, replacing the informative reference IEC 60996 with JB/T 8957; d) Changed "loss" and "capacitor loss" in section 8.2 to "capacitor loss tangent"; e) Note 9.2 has been amended, replacing the informative reference IEC 60831-1 with GB/T 12747.1; f) Notes to 9.2, 9.3, and 16.3 have been amended, replacing the informative reference IEC 60871-1 with GB/T 11024.1; g) Replace IEC 60931-1, IEC 60931-2 and IEC 60931-3 with GB/T 17886 (all parts), and replace GB/T 3984 (all parts) with GB/T 17886 (all parts). GB/T 6115 (all parts) replaces IEC 60110-1 and IEC 60110-2, and all parts replace IEC 60143-1. IEC 60143-2, IEC 60143-3, and IEC 60143-4 are replaced by GB/T 3667 (all parts). IEC 60252-2, replace IEC 61071 with GB/T 17702, replace IEC 61048 with GB/T 18489, and use... GB/T 18504 replaces IEC 61049, GB/T 311 (all parts) replaces the IEC 60071 series, and GB/T 26218 is used. (All parts) supersede the informative references to the IEC TS60815 series. Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Technical Committee on Standardization of Power Capacitors (SAC/TC45). Deng Guangzhao, Li Shimin, Sun Jianru, Zhang Zhuping, Zheng Jushi, Ning Xiaobo, Zhu Lingyu, Xie Chong, Tong Kefeng, Yuan Jing, Chen Wei, Zhang Limei, Xiang Lei, Guo Deliang, Lu Wenhao, Qin Shaorui, Yao Cheng, Wang Lei, Zhao Chunsheng, Zhang Hailong, Guo Xiangming, Wang Zhandong, Ding Mingjun, Li Yinda, Wei Jun, Sun Jin, Huang Xiangqian, Yuan Tan, and Chen Shibo. For AC systems with a nominal voltage of 1000V or higher Self-healing parallel power capacitors

1 Scope

This document specifies the usage conditions, quality requirements, and testing procedures for self-healing parallel power capacitors used in AC systems with a nominal voltage of 1000V or higher. The requirements for testing classification, insulation level, marking, installation and operation guidelines are described, along with the corresponding test methods. This document applies to AC power systems with a nominal voltage of 1000V or higher and a frequency of 15Hz to 60Hz, and is specifically designed to improve power efficiency. Factor self-healing capacitor units and self-healing capacitor banks. This document does not apply to the following capacitors. ---Self-healing parallel power capacitors for AC systems with a nominal voltage of 1000V and below [see GB/T 12747 (all parts)]; ---Non-self-healing parallel power capacitors for AC systems with a nominal voltage of 1000V and below [see GB/T 17886 (all parts)]; ---Non-self-healing parallel capacitors for AC power systems with a nominal voltage of 1000V or higher [see GB/T 11024 (all parts)]; ---Power capacitors for induction heating devices [see GB/T 3984 (all parts)]; ---Series capacitors [see GB/T 6115 (all parts)]; --- AC motor capacitors [see GB/T 3667 (all parts)]; ---Coupled capacitors and capacitive voltage dividers [see GB/T 19749 (all parts)]; ---Power electronic capacitors (see GB/T 17702); ---Small AC capacitors for fluorescent and discharge lamps (GB/T 18489 and GB/T 18504); ---Capacitors for suppressing radio interference; ---Capacitors intended for use as components in various electrical devices; ---A capacitor intended for use under a DC voltage superimposed with an AC voltage. Requirements for various auxiliary devices, such as insulators, switches, transformers, external fuses, and external protectors, are given in the relevant documents, but... This is not included in the scope of this document. The purpose of this document is. a) To establish unified rules regarding the performance, rating, and testing of self-healing capacitor cells and capacitor banks; b) Explain the specific safety rules; c) Provide installation and operation guidelines.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 311.1-2012 Insulation Coordination - Part 1.Definitions, Principles and Rules (IEC 60071-1.2006) GB/T 311.2-2013 Insulation Coordination Part 2.Guidelines for Use (IEC 60071-2.1996, MOD) GB/T 15166.4 High-voltage AC fuses - Part 4.Fuses for external protection of parallel capacitors (GB/T 15166.4- 2021, IEC 60549.2013, MOD) GB/T 16927.1 High Voltage Testing Techniques – Part 1.General Definitions and Test Requirements (GB/T 16927.1-2011) ...