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GB/T 4109-2022: Insulated bushings for alternating voltages above 1 000 V
Status: Valid GB/T 4109: Evolution and historical versions
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| GB/T 4109-2022 | English | 1159 |
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Insulated bushings for alternating voltages above 1 000 V
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GB/T 4109-2022
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| GB/T 4109-2008 | English | 1759 |
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Insulated bushings for alternating voltages above 1 000V
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GB/T 4109-2008
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| GB/T 4109-1999 | English | 839 |
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Technical specification of high voltage bushing
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GB/T 4109-1999
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| GB/T 4109-1988 | English | RFQ |
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Technical specification of high voltage bushings
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GB/T 4109-1988
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PDF similar to GB/T 4109-2022
Basic data | Standard ID | GB/T 4109-2022 (GB/T4109-2022) | | Description (Translated English) | Insulated bushings for alternating voltages above 1 000 V | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K48 | | Word Count Estimation | 58,511 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 4109-2022: Insulated bushings for alternating voltages above 1 000 V---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.
Insulated bushings for alternating voltages above 1 000 V
ICS 29.080.20
CCSK48
National Standards of People's Republic of China
Replacing GB/T 4109-2008
Insulating bushings for AC voltages higher than 1000V
(IEC 60137.2017,MOD)
Published on 2022-03-09
2022-10-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Foreword V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 Rating 7
4.1 Equipment maximum voltage (Um) 7
4.2 Rated current (Ir) 7
4.3 Rated thermal short-time current (Ith) 8
4.4 Rated dynamic stable current (Id) 8
4.5 Minimum cantilever load tolerance value8
4.6 Mounting angle 9
4.7 Minimum nominal creepage distance9
4.8 Temperature Limits and Temperature Rise 9
4.9 Standard insulation level 12
4.10 Test taps for transformer bushings 14
5 Operating Conditions 14
5.1 Temporary overvoltage 14
5.2 Altitude 14
5.3 Temperature of ambient air and immersion medium 15
5.4 Seismic conditions 15
5.5 Very Fast Transient (VFT) 16
5.6 Transformer insulating liquids 16
6 Ordering parameters and identification 16
6.1 Parameter listing 16
6.2 Identification 18
7 Test requirements 19
7.1 General requirements 19
7.2 Test classification 19
7.3 Bushing conditions for insulation and thermal testing 21
8 Type test 22
8.1 General 22
8.2 Power frequency dry or wet withstand voltage test 22
8.3 Long-term power frequency withstand voltage test (ACLD) 23
8.4 Lightning impulse dry withstand voltage test (BIL) 24
8.5 Operating impulse dry or wet withstand voltage test 25
8.6 Thermal stability test 26
8.7 Radio Interference Voltage Test (RIV) 26
8.8 Temperature rise test 27
8.9 Thermal Short-Term Current Withstand Verification 28
8.10 Cantilever load tolerance test 29
8.11 Sealing test for liquid-filled, mixture-filled and liquid-filled insulating bushings 30
8.12 Internal pressure test of gas-filled, gas-insulated and gas-impregnated bushings 30
8.13 External pressure test of partially or fully gas-immersed bushings 30
8.14 Visual and dimensional inspection 31
9 Test-by-Test 31
9.1 General 31
9.2 Measurement of Dielectric Dissipation Factor (tanδ) and Capacitance at Ambient Temperature 31
9.3 Lightning impulse dry withstand voltage test (BIL) 32
9.4 Power frequency dry withstand voltage test 32
9.5 Partial discharge measurement 33
9.6 Tap insulation test 34
9.7 Internal pressure test of gas-filled, gas-insulated and gas-impregnated bushings 34
9.8 Sealing test for liquid-filled, mixture-filled and liquid-filled insulating bushings 35
9.9 Sealing tests for gas-filled, gas-insulated and gas-impregnated bushings 35
9.10 Sealing test on flanges or other fastening devices 35
9.11 Visual and dimensional inspection 36
9.12 Determination of water content 36
9.13 Dissolved Gas Gas Chromatography Analysis 37
10 Requirements and tests for non-capacitive bushings with maximum equipment voltage ≤ 52kV 37
10.1 General 37
10.2 Temperature requirements 37
10.3 Liquid level of immersion medium 37
10.4 Identification 37
10.5 Test requirements 37
11 Recommendations for transportation, storage, installation, operation and maintenance 39
11.1 General 39
11.2 Conditions of transport, storage and installation 39
11.3 Installation 39
11.4 Unpacking and Hoisting 39
11.5 Assembly 39
11.6 Running 40
11.7 Maintenance 41
12 Security 43
12.1 Safety requirements 43
12.2 Electrical aspects 43
12.3 Mechanical aspects 43
12.4 Thermal Performance 43
13 Environmental aspects 43
Appendix A (informative) Structural changes in this document compared to IEC 60137.201744
Appendix B (Informative) Example of Typical Casing Test Items 45
B.1 Typical casing type test items 45
B.2 Typical casing test items one by one 47
Appendix C (informative) Determination of the hottest point in the bushing by the conductor embedded in the insulating material 49
Reference 50
Figure 1 Correction factor m 15 in operating impulse withstand voltage
Figure 2 The nameplate of the bushing with the highest voltage Um≥72.5kV18
Figure 3 Nameplate of the bushing with the highest voltage Um< 72.5kV of the equipment (except the bushing for which Figure 4 is applicable) 18
Figure 4 Nameplate of the bushing made of porcelain or similar inorganic material, resin or combined insulation for the maximum voltage Um≤52kV of the equipment (see 10.3)
Figure 5 Long-term power frequency withstand voltage curve (ACLD) 23
Table 1 Minimum values for cantilever withstand loads (see 4.5 and 8.10) 8
Table 2 Temperature and maximum temperature rise above ambient air temperature (see 4.8) 10
Table 3 Temperature of ambient air and immersion medium11
Table 4 Insulation level corresponding to the highest voltage of the equipment (see 4.9, 8.2, 8.4, 8.5, 9.3 and 9.4) 12
Table 5 Scope of application of type test (see 7.2.2, except for bushings in accordance with Chapter 10) 20
Table 6 Scope of application for each test (see 7.2.3, except for bushings that comply with Chapter 10) 21
Table 7 Correction of test voltage (see 7.3) 22
Table 8 Maximum value of tanδ and tanδ increase (see 9.2) 32
Table 9 Maximum partial discharge (see 8.3 and 9.5) 34
Table 10 Specified value of water content of insulating oil 37
Table 11 Scope of application for type testing of bushings in accordance with Chapter 10 (see 10.5.1) 38
Table 12 Scope of application of individual tests for bushings in accordance with Chapter 10 (see 10.4.2) 39
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document replaces GB/T 4109-2008 "Insulation bushings with AC voltage higher than 1000V", compared with GB/T 4109-2008,
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
--- Added resin impregnated fiber sleeve (RIS) (see 3.11.1);
--- Include bushings with Um≤1.1kV, Um=1100kV and Um=1200kV (see Table 1);
--- Modify the load tolerance value of the casing cantilever in Table 1 (see Table 1);
--- Increase the temperature rise test and sealing test of the liquid insulating bushing defined in 3.4 (see Table 5);
--- For all capacitive bushings with Um ≥ 72.5kV, the lightning impulse dry withstand test is added to each test (see Table 5);
--- Modified the altitude correction procedure ( >1000m) (see 5.2);
--- Added an explanation of the effect of very fast transient (VFT) on casing (see 5.5);
--- In the special test, the visible corona voltage test is added for the porcelain or inorganic material casing (see 7.2.4);
--- The long-term power frequency withstand voltage test is modified to be applicable to all transformer bushings with Um ≥ 72.5kV, and the long-term power frequency withstand voltage test has been modified.
frequency withstand voltage curve (see 8.3);
--- Expanded the scope of application of bushings in the lightning impulse dry withstand voltage test (see 9.3);
--- According to the requirements of relevant standards for transformers, the transformers in the type test and the lightning impulse dry withstand test in the test items are modified
Coefficient of bushing withstand voltage value (see 8.4, 9.3);
---According to the relevant national standards and actual conditions in my country, the insulation withstand level of various products in Table 4 has been modified (see Table 4);
--- Added water content determination (see 9.12) and dissolved gas gas chromatography analysis (see 9.13) in each test item.
This document is modified to adopt IEC 60137.2017 "Insulating Bushings for AC Voltages Above 1000V".
Compared with IEC 60137.2017, this document has many adjustments in structure, and the comparison list of structure number changes between the two documents
See Appendix A.
The technical differences between this document and IEC 60137.2017 and their reasons are as follows.
--- Replaced IEC 60038 with the normatively cited GB/T 156-2017, the degree of consistency between the two documents is modified, because
The voltage level used by my country's power grid is different from IEC ;
--- Replaced IEC 60071-1 with the normatively cited GB/T 311.1-2012, and the degree of consistency between the two documents is revised
change, because the voltage level used by my country's power grid is different from that of IEC ;
--- Replaced IEC 60059 with the normatively cited GB/T 762-2002, and the degree of consistency between the two documents is modified to
The current level used in my country's power grid is different from that of IEC ;
--- Added normative reference document GB/T 1094.1-2013;
--- Added normative reference document GB/T 1094.2-2013;
--- Added normative reference document GB/T 1094.3-2017;
--- Replaced IEC 60076-5 with the normatively cited GB/T 1094.5-2008, and the degree of consistency between the two documents is revised
to adapt to the technical conditions of our country and the actual situation of the power grid;
--- Replaced IEC 60076-7 with the normatively cited GB/T 1094.7-2008, and the degree of consistency between the two documents is revised
to adapt to the technical conditions of our country and the actual situation of the power grid;
---Add normative reference document GB /Z 1094.14-2011;
--- Replaced IEC 60296 with the normatively cited GB 2536-2011, and the degree of consistency between the two documents is modified to suit the
Use our country's technical conditions and the actual situation of the power grid;
--- Added normative reference document GB/T 2900.8-2009;
--- Added normative reference document GB/T 4585;
--- Added normative reference document GB/T 6553-2014;
--- Replaced IEC 60270 with the normatively cited GB/T 7354-2018, the degree of consistency between the two documents is modified, with
Applicable to my country's technical conditions and the actual situation of the power grid;
--- Replaced IEC 60480 with the normatively cited GB/T 8905-2012, the degree of consistency between the two documents is modified, with
Applicable to my country's technical conditions and the actual situation of the power grid;
--- Replaced IEC 62271-1 with the normatively cited GB/T 11022, and the degree of consistency between the two documents is modified to suit the
Use our country's technical conditions and the actual situation of the power grid;
--- Replaced IEC /T RCISPR18-2 with the normatively cited GB/T 11604, and the degree of consistency between the two documents is revised
to adapt to the technical conditions of our country and the actual situation of the power grid;
--- Added normative reference document GB/T 12022;
--- Added normative reference document GB/T 12944-2011;
--- Added normative reference document GB/T 14542-2017;
--- Replaced IEC 60060-1 with the normatively cited GB/T 16927.1, the degree of consistency between the two documents is modified, with
Applicable to my country's technical conditions and the actual situation of the power grid;
---Replace IEC 61462 with the normatively cited GB/T 21429-2008, the degree of consistency between the two documents is modified,
In order to apply to our country's technical conditions and the actual situation of the power grid;
--- Replaced IEC 62217 with the normatively cited GB/T 22079-2019, the degree of consistency between the two documents is modified,
In order to apply to our country's technical conditions and the actual situation of the power grid;
--- Replaced IEC 62155.2003 with the normatively cited GB/T 23752-2009, and the degree of consistency between the two documents is
Modified to apply to the technical conditions of our country and the actual situation of the power grid;
--- Added normative reference document GB/T 25840-2010;
--- Replaced IEC /T S60815-2 with the normatively cited GB/T 26218.2, the degree of consistency between the two documents is modified,
In order to apply to our country's technical conditions and the actual situation of the power grid;
--- Replaced IEC /T S60815-3 with the normatively cited GB/T 26218.3, the degree of consistency between the two documents is modified,
In order to apply to our country's technical conditions and the actual situation of the power grid;
---Add normative reference document GB 50260-2013;
--- Added normative reference document JB/T 11052-2010;
---Replace IEC 61099 with normatively cited NB/SH/T 09945-2017, and the degree of consistency between the two documents is revised
to adapt to the technical conditions of our country and the actual situation of the power grid;
---According to the actual application of casing products in my country, there is no application of adhesive paper casing products in our country, and the 3.9 adhesive paper casing (RBP) is changed to
Grease-coated casing (LCF) for practical application in my country;
---According to the actual application of casing products in my country, 3.11 resin-impregnated fiber casing (RIS) is changed to impregnated fiber casing, and divided into
3.11.1 Resin Impregnated Fiber Sleeve (RIS) and 3.11.2 Rubber Impregnated Fiber Sleeve (RIF);
--- According to the relevant national standards and the actual situation in my country, the maximum voltage value of the equipment in 4.1 has been modified;
--- According to the relevant national standards and actual conditions in my country, the text in 4.4 is changed to Note;
---According to the relevant national standards in my country and the actual situation, the maximum voltage value of the equipment and the corresponding cantilever test negative are added in Table 1.
load value, and added Note 4;
--- According to the relevant national standards and actual conditions in my country, the insulation withstand level of various products in Table 4 has been modified;
--- According to the requirements of relevant standards for transformers, the transformers in the type test and the lightning impulse dry withstand test in the test items are modified
Coefficient of bushing withstand voltage value;
--- Added water content measurement and dissolved gas gas chromatography analysis to each test item;
--- Expanded the scope of application of bushings in 9.3 Lightning impulse dry withstand voltage test.
The following editorial changes have been made to this document.
--- Added informative Appendix B typical casing test items.
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by China Electrical Equipment Industry Association.
This document is under the jurisdiction of the National Standardization Technical Committee of Insulators (SAC/TC80).
The main drafting organizations of this document. Xi'an High Voltage Electric Apparatus Research Institute Co., Ltd., State Grid Corporation of China, China Electric Power Research Institute
Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Xi'an Jiaotong University, Legend Electric (Shenyang) Co., Ltd., Nanjing Electric High
Pressure Bushing Co., Ltd., Xi'an Xidian High Voltage Bushing Co., Ltd., TBEA Shenyang Transformer Group Co., Ltd., Xi'an Xidian Transformer Co., Ltd.
Limited Liability Company, Xi'an West Electric Switch Electric Co., Ltd., Henan Pinggao Electric Co., Ltd., New Northeast Electric Group High Voltage Switch Co., Ltd.
Company, Liling Huaxin Electric Porcelain Technology Co., Ltd., Changyuan High Energy Electric Co., Ltd., Baoding Tianwei Baobian Electric Co., Ltd.
Company, Jiangsu Shenma Electric Power Co., Ltd., State Grid Xinjiang Electric Power Co., Ltd. Electric Power Research Institute, State Grid Ningxia Electric Power Co., Ltd.
Scientific Research Institute, State Grid Tibet Electric Power Co., Ltd. Electric Power Research Institute, State Grid Anhui Electric Power Co., Ltd., Beijing Fanmei LTECH Co., Ltd.
Co., Ltd., China Electric Power Research Institute Co., Ltd. Wuhan Branch, China Southern Power Grid Co., Ltd., Liaoning Electric Power Co., Ltd., Jiangxi Electric Power Co., Ltd.
Suzhida High Voltage Electric Co., Ltd., Jiangsu Jinan Electric Co., Ltd., State Grid Gansu Electric Power Company Electric Power Research Institute.
The main drafters of this document. Wei Peng, Li Jinzhong, Hao Yuliang, Tang Hao, Wang Yunpeng, Li Qingfeng, Dang Zhenping, Luo Bing, Wang Jiansheng, Peng Zongren,
Xu Zhongli, Shi Yubing, Han Xiaodong, Wen Zheng, Zhiying An, Li Xinyi, Xu Weixing, Dai Tongling, Yang Xuefeng, Fang Bin, Guo Mansheng, Zhang Xinxin, Liu Zhiqiang,
Zhuoran, Hu Wenqi, Li Qiang, Wei Wei, Zeng Xiangjun, Wu Xutao, Liu Chen, Yue Xiwen, Xie Jia, Sun Wenfeng, Xu Guanghu, Zhao Ying, Shen Meng, Cai Shuili,
Shen Yitong, He Qingwen, Yao Junrui, Huang Zhiming, Wu Wenhua, Yang Lei, Su Chunqiang, Ding Shilin, Chen Gang, Li Xuanjiannan, La Yuan, An Zeqing, Sun Mei,
Guo Lu.
The previous versions of this document and its superseded documents are as follows.
---First published in 1983 as GB 4109-83, first revised in 1988, second revised in.1999, third in.2008
revision;
---This is the fourth revision.
Insulating bushings for AC voltages higher than 1000V
1 Scope
This document specifies the characteristics and tests of insulating bushings (hereinafter referred to as bushings).
This document is applicable to the three-phase AC system with a maximum voltage higher than 1000V and a frequency of 15Hz~60Hz defined in Chapter 3.
Bushings used in electrical equipment and devices such as electrical appliances, machinery, transformers, switches, etc.
Part or all of this document is applicable to the following bushings by agreement between the supplier and the purchaser.
--- Bushings for non-three-phase AC systems;
--- Bushings for HVDC systems;
--- bushings for test transformers;
---Sleeves for capacitors.
The special requirements and tests for transformer bushings in this document also apply to reactor bushings.
This document applies to sleeves produced and sold separately. Bushings that form part of electrical equipment and cannot be tested in accordance with this document shall be
The electrical equipment is tested together.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 156-2017 Standard Voltage (IEC 60038.2009, MOD)
GB/T 311.1-2012 Insulation coordination - Part 1.Definitions, principles and rules (IEC 60071-1.2006, MOD)
GB/T 762-2002 Standard Current Level (eqvIEC 60059.1999)
GB/T 1094.1-2013 Power Transformers Part 1.General (IEC 60076-1.2011, MOD)
GB/T 1094.2-2013 Power Transformers Part 2.Temperature Rise of Liquid-Immersed Transformers (IEC 60076-2.2011, MOD)
GB/T 1094.3-2017 Power Transformers Part 3.Insulation Level, Insulation Test and External Insulation Air Clearance (IEC 60076-3.
2013, MOD)
GB/T 1094.5-2008 Power transformers - Part 5.Ability to withstand short circuits (IEC 60076-5.2006, MOD)
GB/T 1094.7-2008 Power Transformers Part 7.Loading Guidelines for Oil-immersed Power Transformers (IEC 60076-7.2005,
MOD)
GB /Z 1094.14-2011 Power transformers - Part 14.Design and application of liquid immersed transformers using high temperature insulating materials
(IEC /T S60076-14.2009, IDT)
GB/T 2423.23-2013 Environmental Testing Part 2.Test Method Test Q. Sealing (IEC 60068-2-17.1994, IDT)
GB 2536-2011 Unused mineral insulating oils for electrical fluid transformers and switches (IEC 60296.2003, MOD)
GB/T 2900.5 Electrical terminology insulating solids, liquids and gases (GB/T 2900.5-2013, IEC 60050-212.2010, IDT)
GB/T 2900.5-2013 Electrical terminology insulating solids, liquids and gases (IEC 60050-212.2010, IDT)
GB/T 2900.8-2009 Electrical terminology insulators (IEC 60050-471.2007, IDT)
GB/T 4585 Artificial contamination test of high voltage insulators for AC systems (GB/T 4585-2004, IEC 60507.1991, IDT)
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