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GB/T 6115.1-2026: Series capacitors for power systems - Part 1: General
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 6115.1-2026	English	1059	Add to Cart	7 days [Need to translate]	Series capacitors for power systems - Part 1: General
GB/T 6115.1-2008	English	929	Add to Cart	7 days [Need to translate]	Series capacitors for power systems -- Part 1: General
GB/T 6115.1-1998	English	RFQ	ASK	6 days [Need to translate]	Series capacitors for power systems. Part 1: General--Performance, testing and rating--Safety requirements--Guide for installation
GB/T 6115-1985	English	RFQ	ASK	3 days [Need to translate]	Series capacitors

GB/T 6115.1-2026: Series capacitors for power systems - Part 1: General

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ICS 31.060.70 CCSK42 National Standards of the People's Republic of China Replaces GB/T 6115.1-2008 Series capacitors for power systems Part 1.General Provisions (IEC 60143-1.2015, MOD) Published on 2026-01-28 Implemented on August 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface III Introduction VI 1.Scope 1 2 Normative References 1 3.Terms and Definitions 2 4.Usage conditions 6. 4.1 Normal operating conditions 6 4.2 Ambient air temperature category 7 4.3 Abnormal Use Conditions 7 4.4 Abnormal Power System Conditions 7 5 Quality Requirements and Tests 8 5.1 Test requirements for capacitor units 8 5.2 Test Classification 10 5.3 Capacitance Measurement (Routine Test) 11 5.4 Measurement of Capacitor Loss Tangent (tanδ) (Routine Test) 11 5.5 Terminal Voltage Test (Routine Test) 12 5.6 AC Voltage Test Between Terminals and Housing (Routine Test) 12 5.7 Internal Discharge Device Testing (Routine Test) 12 5.8 Sealing Test (Routine Test) 12 5.9 Thermal stability test (type test) 12 5.10 AC voltage test between terminals and housing (type test) 13 5.11 Lightning impulse voltage test between terminals and enclosure (type test) 14 5.12 Cold working condition test (type test) 14 5.13 Discharge Current Test (Type Test) 15 6.Insulation level 15 6.1 Insulation withstand voltage 15 6.2 Creepage distance 18 6.3 Air gap distance 19 7.Overload, overvoltage, and load cycle 22 7.1 Current 22 7.2 Transient overvoltage 22 7.3 Load cycle 22 8 Safety Requirements 23 8.1 Discharge Devices 23 8.2 Housing Connection 23 8.3 Environmental Protection 23 8.4 Other safety requirements 23 9.Markings and Instructions 23 9.1 Unit Marking 23 9.2 Markings of capacitor banks 24 9.3 Instruction Manual 25 10.Guidelines for the selection, installation, and operation of ratings 25 10.1 Overview 25 10.2 Reactance of each line, rated reactance of each capacitor bank, and number of stages in each bank (25) 10.3 The rated current of the capacitor bank is 27. 10.4 Overvoltage protection requirements 29 10.5 Voltage Limitation During Power System Faults 29 10.6 Protection and switching device 30 10.7 Selection of Insulation Level 30 10.8 Correction of Long-Distance Transmission Lines 31 10.9 Other considerations in application 31 Appendix A (Normative) Test Requirements and Application Guidelines for External Fuses and Capacitor Units Protected by External Fuses 34 A.1 General Rule 34 A.2 Objective 34 A.3 Terms used in Appendix A 34 A.4 Performance Requirements 34 A.5 Experiment 34 A.6 Guidelines for Coordination of Fuse Protection 35 A.7 Selection of Fuse 35 A.8 Information Required by Fuse Users 36 Appendix B (Informative) Economic Assessment of Losses in Series Capacitor Banks 37 Appendix C (Informative) Fuse Protection for Capacitor Banks and Arrangement of Units 38 C.1 Overview 38 C.2 Internal fuse capacitor bank 38 C.3 External fuse capacitor bank 38 C.4 Fuseless capacitor bank 38 Appendix D (Informative) Typical Wiring Diagrams for Large Series Capacitor Units in Transmission Lines 40 Appendix E (Informative) Preventive Measures to Avoid Environmental Pollution by Polychlorinated Biphenyls 41 References 42 Figure 1.Typical terminology for series capacitor devices. 4 Figure 2.Typical types of overvoltage protection. Figure 3.Limitations on time and voltage amplitude during one cycle of the overvoltage test. Figure 4.Relationship between air gap distance and AC power frequency withstand voltage. Figure 5.Typical current-time curves after a fault occurs in the capacitor bank while it is in operation and the parallel lines are cleared. Figure C.1 Typical connection between capacitor units in a segment or phase 39 Figure C.2 Typical connections between components within a capacitor cell 39 Figure D.1 Typical wiring diagram of a large series capacitor bank for power transmission lines 40 Table 1.Upper limit of temperature range (using letter codes) 7 Table 2 Ambient air temperature for thermal stability test 13 Table 3 Standard Insulation Level 17 Table 4.Specific creepage distance ratios 19 Table 5.Relationship between standard rated lightning impulse withstand voltage and minimum air gap distance 20 Table 6.Relationship between standard rated operating impulse withstand voltage and minimum relative-to-ground air gap distance 21 Table 7.Relationship between standard rated operating impulse withstand voltage and minimum phase-to-phase air gap distance 21 Table 8 Typical overload and swing current withstand capabilities of capacitor banks 28

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 Part 1 of GB/T 6115 "Series Capacitors for Power Systems". GB/T 6115 has already published the following parts. ---Part 1.General Provisions; ---Part 2.Protection devices for series capacitor banks; ---Part 3.Internal Fuse; ---Part 4.Thyristor-controlled series capacitors. This document supersedes GB/T 6115.1-2008 "Series Capacitors for Power Systems - Part 1.General Rules" and is consistent with GB/T 6115.1- Compared to.2008, aside from structural adjustments and editorial changes, the main technical changes are as follows. a) Changed "(Capacitor) Ambient Air Temperature", "Capacitor", "Capacitor Cell", "Cooling Air Temperature", and "Fuseless Capacitor Bank". The terms and definitions of “segment (of a series capacitor),” “sub-segment,” and “matching current of a nonlinear resistor” (see 3.1, 3.3, 3.4, 3.7) are as follows. 3.28, 3.32, 3.34 (and 3.1, 3.3, 3.4, 3.7, 3.30, 3.34, 3.36 of the.2008 edition); b) The terms "insulation level" and "power frequency withstand voltage" have been removed (see 3.14 and 3.20 of the.2008 edition); c) The normal operating conditions have been changed, with the icing thickness changed to "not exceeding 20mm" and the solar radiation changed to "not exceeding 1100W/m2" (see...). 4.1 (4.1 in the.2008 edition); d) The non-standard usage conditions have been changed to require earthquake acceleration according to the 'moderate or high earthquake level' specified in IEEE Std 693. The word "degree" has been changed to "horizontal acceleration greater than 0.2g" to better reflect my country's actual situation (see 4.3,.2008 version 4.3); e) The acceptance criteria for the thermal stability test have been changed (see 5.9,.2008 version 5.9); f) The test method for the capacitor unit to withstand three positive impulse voltages in the lightning impulse voltage test between the terminals and the casing has been removed. (See 5.11 in the.2008 edition); g) An isolation test for the internal fuse has been added (see 5.2.3); h) Change "Special Test (Durability Test)" to "Aging Test" (see 5.2.4, 5.2.3 in the.2008 version); i) The standard insulation level for the system nominal voltage of 1000kV has been increased (see Table 3); j) The content regarding "creepage distance" has been modified (see 6.2,.2008 version 6.2); k) The contents of Table 4 have been changed (see Table 4,.2008 version); l) The contents of Tables 5, 6, and 7 have been changed (see 6.3,.2008 version 6.3); (m) An altitude correction factor has been added to the external insulation performance of devices installed at altitudes above 1000m (see 10.7.2); n) The requirement for “long-distance transmission line correction” has been added (see 10.8). This document is modified to adopt IEC 60143-1.2015 "Series capacitors for power systems - Part 1.General". Compared with IEC 60143-1.2015, this document has undergone the following structural adjustments. ---The positions of the terms "(capacitor's) internal fuse" and "fuseless capacitor bank" have been adjusted; ---The position of the content related to the labeling method for describing insulation levels has been adjusted. The technical differences between this document and IEC 60143-1.2015 and the reasons therefor are as follows. a) The scope has been changed in accordance with the requirements of GB/T 1.1, which describes the main contents specified in this document (see Chapter 1). b) The terms and definitions of “capacitor”, “(capacitor’s) internal fuse”, and “fuseless capacitor bank” have been changed (see 3.3, 3.11, 3.14). c) Based on the actual application of series capacitors in my country, the terms "insulation level" and "power frequency withstand voltage" have been deleted. d) Regarding normative references, this document has made adjustments to reflect technical differences to adapt to my country's technical conditions. The details of these adjustments are as follows. The changes are primarily reflected in Chapter 2, "Normative References," and are detailed below. ---GB/T 311.1-2012 has replaced IEC 60071-1.2006 (see 6.1.1, 6.1.3.4, and 6.3); ---GB/T 6115.2-2017 has replaced IEC 60143-2.2012 (see 5.13, 7.3, 10.3.2); ---GB/T 18504 has replaced IEC 61049 (see Chapter 1); ---Added normative reference documents GB/T 11024.2, GB/T 26218.1, GB/T 26218.2, and GB/T 26218.3 (see...) 5.2.4, 6.2); ---The normative references IEC 60050 (all parts), IEC 62271-1.2007, and IEEE Std.693.1997 have been removed. e) Based on my country's actual environmental conditions and power grid situation, the normal operating conditions were modified, and the icing thickness was changed to "not exceeding..." The solar radiation was changed from “20mm” to “not greater than 1100W/m2” (see 4.1) to meet the actual situation in my country. f) Based on my country's actual environmental conditions and power grid situation, the abnormal use conditions were modified, changing the requirement to "comply with IEEE Std 693". The phrase "the corresponding seismic acceleration at the level of an earthquake of equal or higher magnitude" should be changed to "horizontal acceleration greater than 0.2g" to better reflect the actual situation in my country. (See 4.3). g) Based on the actual situation of my country's capacitor industry, a thyristor-protected series capacitor (K2 type) has been added (see 5.1.3). h) In accordance with the requirements of GB/T 6115.3, an isolation test for the internal fuse has been added (see 5.2.3). i) Based on the actual situation of my country's capacitor industry, the capacitance deviation has been modified (see 5.3.2). j) Based on the actual situation of my country's capacitor industry, the routine test requirements for external fuse losses are removed. k) Based on the actual situation of my country's capacitor industry, the qualification criteria for thermal stability testing have been changed (see 5.9). l) Based on the actual situation of my country's capacitor industry, the relevant content regarding classification by voltage level in the standard values has been deleted (see...). 6.1.1). m) The relevant tables for standard insulation levels have been changed and uniformly changed to Table 3 (see Table 3). n) The creepage distance requirements have been modified in accordance with the requirements of the GB/T 26218 series of standards to adapt to my country's technical conditions (see 6.2). o) In accordance with the requirements of the GB/T 26218 series of standards, the contents of the "Specific Creepage Distance" table have been changed (see Table 4). p) Based on the actual situation of my country's capacitor industry, the contents of air gap distance in Tables 5, 6 and 7 have been changed (see 6.3). q) Based on the actual situation of my country's capacitor industry, the method of indicating capacitance deviation after the measured capacitance on the nameplate has been changed (see...). 9.1.1). r) In accordance with the requirements of GB/T 311.1-2012, the method for determining the external insulation performance of devices installed at altitudes above 1000m has been modified. Adjust the correction factor (see 10.7.2). The following editorial changes have been made to this document. ---Includes the errata in IEC 60143-1.2015/COR1.2017 and IEC 60143-1.2015/AMD1.2023, covering the relevant... The blank space on the outer page of the clauses is marked with double vertical lines (‖); ---Notes on 3.14 and 3.15 have been deleted; ---The contents of Appendix E have been changed. 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). This document was drafted by. Xi'an High Voltage Apparatus Research Institute Co., Ltd., Anhui Huwei New Energy Co., Ltd., and Hefei Huwei Automation. Limited Liability Company, China Electric Power Research Institute Co., Ltd., Anhui Saif Electronics Co., Ltd., Yongjin Capacitor Co., Ltd., State Grid Anhui Electric Power Power Supply Co., Ltd., Bengbu Power Supply Company, Xi'an Hitachi Energy Power Capacitor Co., Ltd., Xiamen Farad Electronics Co., Ltd., Ningbo Jiang Beijiufang Herong Electric Co., Ltd., Anhui Tongfeng Electronics Co., Ltd., Wuxi Saijing Power Capacitor Co., Ltd., Shaoxing Shangyu Electric Power Capacitor Co., Ltd., Shanghai Siyuan Power Capacitor Co., Ltd., State Grid Anhui Electric Power Research Institute, State Grid Zhejiang Jiangxi Provincial Electric Power Co., Ltd. Shaoxing Power Supply Company, Herong Electric Co., Ltd., Guilin Power Capacitor Co., Ltd., Shandong Taikai Electric Power Electronics Co., Ltd., Anhui Feida Electric Technology Co., Ltd., North China Electric Power Research Institute Co., Ltd., Shenzhen Power Technology Co., Ltd. Limited Company, Wuxi Chenrui New Energy Technology Co., Ltd., Shenzhen Power Supply Bureau Co., Ltd., Tongji University, State Grid Heilongjiang Electric Power Co., Ltd. Research Institute of Power Science, Taizhou Anaijie Power Equipment Co., Ltd., State Grid Tianjin Electric Power Company Binhai Power Supply Branch, Wuxi Power Filtering Limited Liability Company, Anhui Yuanguang Electric Co., Ltd., Hitachi Energy (China) Co., Ltd., Hangzhou Jiahe Electric Co., Ltd. The main drafters of this document are. He Manchao, Peng Yanghan, Jiang Junxiang, Song Yuchen, Jia Hua, Dai Chaobo, Lei Xiaoyan, Tang Zebo, Liu Daihong, and Liu Jing. Zhu Mingxing, Yang Xiaoliang, Huang Shunda, Lan Shaohan, Tong Kefeng, Li Shimin, Bao Junhua, Lei Qiaoshu, Zhao Xin, Chen Baifu, Xiong Huanghai, Qin Shaorui, Liu Weikang, Xiao Guo, Sun Xiaofeng, Jiang Yongli, Wu Yongli, Gai Bin, Cao Gang, Chen Bo, Shan Jianhui, Xing Zhaoliang, Guo Shaowei, Hu Zhongsheng, Liu Yichen, Li Jun Fu Zhongxing, Cai Jun, Zhao Faqiang, Zheng Junsheng, Li Zhongyuan, Xiang Lei, Si Wei, Li Yinda, Wen Chenghan, Dong Xuan, Chen Yunfei. The release history of this document and the document it replaces is as follows. ---First published in 1985 as GB/T 6115-1985, and revised for the first time in.1998; ---Second revision in.2008; ---This is the third revision.

Introduction

GB/T 6115 "Series Capacitors for Power Systems" is proposed to consist of four parts. ---Part 1.General Principles. The purpose is to establish the general principles and relevant rules that must be followed for series capacitors used in power systems. ---Part 2.Protective Equipment for Series Capacitor Banks. The purpose is to establish the general principles that must be followed when designing protective equipment for series capacitor banks. Principles and related rules. ---Part 3.Internal Fuses. The purpose is to establish the specific requirements and relevant rules for internal fuses used in series capacitors. ---Part 4.Thyristor-Controlled Series Capacitors. The purpose is to establish the specific requirements for thyristor-controlled series capacitors and... Relevant rules. Series capacitors for power systems Part 1.General Provisions

1 Scope

This document specifies the performance, testing, rating, safety requirements, and installation and operation guidelines for series capacitors used in power systems. This document applies to transmission or distribution lines intended to be connected in series in AC power systems with a frequency of 15Hz~60Hz, forming their components. Capacitor units and capacitor banks are composed of components. This document is primarily applicable to power transmission systems. Series capacitor units and capacitor banks are commonly used for connection to high-voltage power systems. This document applies to the entire voltage range. This document does not apply to capacitors of the self-healing metallized dielectric type. The following capacitors are not applicable to this document, even if they are connected in series with a circuit. ---Capacitors for induction heating devices (see GB/T 3984.1); --- AC motor capacitors and similar applications [see GB/T 3667 (all parts)]; ---Power electronic capacitors (see GB/T 17702); --- Capacitors for tubular fluorescent lamps and other discharge lamp circuits (see GB/T 18489 and GB/T 18504). Note 2.Additional requirements for capacitors protected by external fuses and requirements for external fuses are given in Appendix A and Appendix C. Note 3.Requirements for accessories of series capacitor banks (spark gaps, nonlinear resistors, discharge reactors, current-limiting damping reactors, damping resistors, circuit breakers, etc.) See GB/T 6115.2-2017. Note 4.Information on fuseless capacitor units and capacitor banks can be found in Appendix C. Other related accessories, such as insulators, switches, transformers, and external fuses, can be found in the relevant standards. The purpose of this document is. ---Develop uniform requirements for performance, testing, and ratings; ---Establish clear safety rules; ---Provides 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. Note. In the event of any conflict between this document and the following referenced documents, the text of this document shall prevail. GB/T 311.1-2012 Insulation Coordination - Part 1.Definitions, Principles and Rules (IEC 60071-1.2006, MOD) GB/T 311.2-2013 Insulation Coordination Part 2.Guidelines for Use (IEC 60071-2.1996, MOD) Note. There are no technical differences between the content referenced in GB/T 311.2-2013 and the content referenced in IEC 60071-2.1996. GB/T 6115.2-2017 Series capacitors for power systems – Part 2.Protective equipment for series capacitor banks (IEC 60143-2) 2012, MOD) GB/T 6115.3-2026 Series capacitors for power systems - Part 3.Internal fuses (IEC 60143-3.2015, MOD) Note. The content referenced in GB/T 6115.3-2026 is not technically different from the content referenced in IEC 60143-3.1998. GB/T 6115.4-2014 Series capacitors for power systems – Part 4.Thyristor-controlled series capacitors (IEC 60143-4. ...