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GB/T 1001.1-2021: Insulators for overhead lines with a nominal voltage above 1 000V - Part 1: Ceramic or glass insulator units for a. c. systems - Definitions, test methods and acceptance criteria
Status: Valid GB/T 1001.1: Evolution and historical versions
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Insulators for overhead lines with a nominal voltage above 1 000V - Part 1: Ceramic or glass insulator units for a. c. systems - Definitions, test methods and acceptance criteria
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GB/T 1001.1-2021
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| GB/T 1001.1-2003 | English | RFQ |
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Insulators for overhead lines with a nominal voltage above 1000V- Part 1: Ceramic or glass insulator units for a.c. systems -- Definitions, test methods and acceptance criteria
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| GB 1001-1986 | English | 399 |
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The cap and pin type insulators--Technical specification
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PDF similar to GB/T 1001.1-2021
Basic data | Standard ID | GB/T 1001.1-2021 (GB/T1001.1-2021) | | Description (Translated English) | Insulators for overhead lines with a nominal voltage above 1 000V - Part 1: Ceramic or glass insulator units for a. c. systems - Definitions, test methods and acceptance criteria | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K48 | | Word Count Estimation | 57,560 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 1001.1-2021: Insulators for overhead lines with a nominal voltage above 1 000V - Part 1: Ceramic or glass insulator units for a. c. systems - Definitions, test methods and acceptance criteria
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Insulators for overhead lines with a nominal voltage above 1 000V -- Part 1: Ceramic or glass insulator units for acsystems -- Definitions, test methods and acceptance criteria
ICS 29:080:10
CCSK48
National Standards of People's Republic of China
Replacing GB/T 1001:1-2003
Overhead line insulators with nominal voltage higher than 1000V
Part 1: Porcelain or glass insulator elements for AC systems
Definitions, Test Methods and Judgment Criteria
(IEC 60383-1:1993, MOD)
2021-12-31 Released 2022-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface VII
Introduction X
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 Classification, types, characteristics and insulating materials of insulators 3
4:1 Classification of insulators 3
4:2 Type 4 of insulators
4:3 Insulation material 4
4:4 Specified Characteristics 4
5 Identification of insulators 4
6 Test classification 4
6:1 Type test 4
6:2 Sampling test 5
6:3 Test-by-test 5
6:4 Type test 5
7 Procedures for type and sampling tests 5
7:1 Extraction of type test insulators 5
7:2 Sampling Rules and Procedures for Sampling Tests 5
7:3 Repeated test procedure for sampling test 6
8 General requirements for high voltage tests 6
9 Standard atmospheric conditions and correction factors for electrical tests 7
9:1 Standard reference atmospheric conditions 7
9:2 Correction factor for atmospheric conditions7
10 Artificial Rain Parameters for Wet Test 7
11 Installation arrangement for electrical tests 7
12 Lightning impulse voltage test (type test) 7
12:1 General 7
12:2 Test procedure 7
12:3 Criterion 7
13 Wet power frequency voltage test (type test) 8
13:1 Test procedure 8
13:2 Criterion 8
14 Breakdown withstand test (type test and sampling test, only for type B insulators) 8
14:1 General provisions for breakdown withstand test 8
14:2 Power frequency breakdown withstand test 8
14:3 Impact breakdown test in air 9
15 Voltage-by-voltage test (for type B porcelain insulators only) 9
16 Radio interference test (type test and sampling test) 9
16:1 Atmospheric Conditions 9
16:2 Test procedure 10
16:3 Decision criteria 10
17 Visible corona voltage test (type test) 10
17:1 Atmospheric conditions 10
17:2 Test procedure 10
17:3 Decision criteria 10
18 Dimensional inspection (type test and sampling test) 11
18:1 General requirements 11
18:2 Creepage distance deviation 11
18:3 Judgment Criteria 11
19 Residual mechanical strength test (type test and sampling test) 11
19:1 Pre-test 11
19:2 Preparation of test samples 11
19:3 Test procedure 11
19:4 Test results 12
19:5 Criteria for type testing 12
19:6 Judgment Criteria for Sampling Tests 12
19:7 Comparison of Type Test and Sampling Test Results 12
20 Electromechanical failure load test (type test and sampling test) 13
20:1 Test procedure 13
20:2 Judgment Criteria 13
21 Mechanical failure load test (type test and sampling test) 13
21:1 Test procedure for pin insulators and line post insulators 13
21:2 Test procedure for insulator string elements 13
21:3 Criteria for determining pin insulators 13
21:4 Criteria for determining string elements and line post insulators 13
22 Thermomechanical performance test (type test) 14
22:1 Test procedure 14
22:2 Decision criteria 15
23 Inspection of Axial, Radial and Angular Offset (Sampling Test) 15
23:1 Test procedure 15
23:2 Criteria for determining disc suspension insulators 16
23:3 Judgment Criteria for Long Rod Insulators 17
24 Inspection of locking device (sampling test) 17
24:1 General 17
24:2 Conformity of locking devices 17
24:3 Checking the locked state 17
24:4 Position of the locking device 17
24:5 Procedure for operating tests 17
24:6 Criteria for operating tests 18
25 Temperature cycle test (pre-test of residual strength test in sampling test and type test) 18
25:1 Test Procedures for String Elements, Pin Insulators, and Line Post Insulators 18
25:2 Special test procedures for thick section or oversized insulators 18
25:3 Additional provisions 19
25:4 Judgment Criteria 19
26 Thermal shock test (sampling test) 19
26:1 Test procedure 19
26:2 Judgment Criteria 19
27 Porosity test (sampling test) 19
27:1 Test procedure 19
27:2 Judgment Criteria 20
28 Zinc coating test (sampling test) 20
28:1 General rules for testing galvanized coatings 20
28:2 Test procedure 20
28:3 Judgment Criteria 20
29 Visual inspection one by one 21
29:1 Insulators 21
29:2 Porcelain insulators 21
29:3 Glass insulators 22
30 Mechanical tests one by one 22
30:1 One-by-one mechanical test of line post insulators 22
30:2 Mechanical testing of insulator string elements one by one 22
31 Pin insulator test items refer to Table 22
32 Installation arrangement for pin insulator test 24
32:1 Standard installation arrangements for electrical testing 24
32:2 Installation arrangements for electrical tests to simulate conditions of use 24
32:3 Installation arrangement for mechanical failure load test 24
33 Test items for line post insulators refer to Table 24
34 Statistical analysis constants for line post insulator test results 26
34:1 Constants for type testing 26
34:2 Constants for sampling tests 26
35 Installation arrangement for line post insulator test 26
35:1 Standard installation arrangements for electrical testing 26
35:2 Electrical tests and installation arrangements to simulate service conditions 26
35:3 Mounting arrangement for mechanical failure load test 27
36 Refer to Table 27 for test items of insulator string components
37 Regulations for the type test of insulator strings 29
37:1 Electrical type test of insulator strings 29
37:2 Mechanical type test 29
38 Statistical analysis constants for test results of insulator string elements 30
38:1 Constants for type testing 30
38:2 Constant 30 for sampling test of disc suspension insulators with SFL ≥ 160kN
38:3 Sampling test constants for long rod insulators and disc suspension insulators with SFL < 160kN 30
39 Installation arrangement for electrical test of insulator string components 31
40 Test of insulators for overhead electric traction lines 31
41 Installation Arrangement for Electrical Test of Insulators for Overhead Electric Traction Lines 31
41:1 Standard installation arrangements 31
41:2 Installation arrangements to simulate conditions of use 31
Appendix A (informative) This document and IEC 60383-1:1993 chapter number comparison table 32
Appendix B (informative) Technical differences between this document and IEC 60383-1:1993 and their reasons34
Appendix C (Informative) Methods of Comparison of Electromechanical or Mechanical Type Test and Sampling Test Results 36
Appendix D (normative) Specified parameters of radio interference test 37
D:1 Disk type suspension insulator string element 37
D:2 Other line insulators or insulator components 37
Appendix E (Informative) Diagram of the Determination Procedure for Mechanical and Electromechanical Tests of Insulator String Elements and Line Post Insulators 38
E:1 Program block diagram 38
E:2 Acceptance and Rejection Calculation Examples 39
Appendix F (Informative) Impact Test of Disk Suspension Porcelain or Glass Insulator String Elements 42
F:1 Information on Strike Testing 42
F:2 Test procedure 42
F:3 Judgment Criteria 42
F:4 Test device 42
Figure 1 Diagram of thermomechanical performance test 15
Figure 2 Measurement of Axial and Radial Offset 16
Figure 3 Angular offset measurement 16
Figure 4 Maximum thickness of insulators 19
Figure E:1 Block diagram of determination procedure for mechanical or electromechanical type test 38
Figure E:2 Block diagram of determination procedure for mechanical or electromechanical sampling test 38
Figure E:3 Flow chart for comparison of type test and sampling test results 39
Figure F:1 Front view of impact test device 43
Figure F:2 Side View of the Impact Test Device 44
Figure F:3 Top view of impact test device 44
Figure F:4 Dial detail Figure 45
Figure F:5 Hammer detail Figure 45
Figure F:6 Copper nose detail Figure 46
Table 1 Sampling test sample size of insulator type test5
Table 2 Number of samples for sampling test of insulators6
Table 3 Range of three operating load values for the locking pin operating test 18
Table 4 Refer to Table 23 for the test items of pin insulators
Table 5 Refer to Table 25 for the test items of line post insulators
Table 6 Constants for sampling test of line post insulators 26
Table 7 Refer to Table 27 for test items of insulator string components
Table 8 Constant 30 for sampling test of disc suspension insulators with SFL≥160kN
Table 9 Constants for sampling test of long rod insulators and disc suspension insulators with SFL < 160kN 30
Table A:1 This document and IEC 60383-1:1993 chapter number comparison table 32
Table B:1 Technical differences between this document and IEC 60383-1:1993 and their reasons 34
Table C:1 Limiting constants 36 for the absence of repeated tests
Table C:2 Limiting constants for the case of repeated tests 36
Table D:1 Radio interference voltage test parameters of other line insulators or insulator components Table 37
Table E:1 Example of mechanical or electromechanical sampling test 40
Table E:2 Blank table for calculation of mechanical or electromechanical sampling test 41
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 is part 1 of GB/T 1001 "Overhead Line Insulators with a Nominal Voltage Above 1000V": GB/T 1001 has been issued
The following parts are distributed:
--- Part 1: Definition, test methods and criteria for determination of porcelain or glass insulator components for AC systems;
--- Part 2: Definition, test methods and acceptance criteria for insulator strings and insulator strings for AC systems:
This document replaces GB/T 1001:1-2003 "Overhead line insulators with nominal voltage higher than 1000V - Part 1: AC system
Porcelain or glass insulator components - Definitions, test methods and criteria for determination", compared with GB/T 1001:1-2003, except for structural adjustment and
In addition to editorial changes, the main technical changes are as follows:
--- Added the term "specified failure load" (see 3:12);
--- Delete the term "characteristics specified in 3:16" and adjust its content to "characteristics specified in 4:4" in Chapter 4 (see 4:4);
--- Added "Type Test" in Chapter 6 (see 6:4);
--- Deleted the chapter "Quality Assurance" (see Chapter 7 of the:2003 edition);
--- Added column E3 of sample size in Table 2 of "Sampling Rules and Procedures for Sampling Tests" (see 7:2);
--- Modified the content of the chapter "Breakdown Resistance Test", (see Chapter 14, see Chapter 15 of the:2003 edition);
--- Added "16 Radio Interference Test" chapter (see Chapter 16);
--- Added "17 Visible corona voltage test" chapter (see Chapter 17);
--- In "18:1 General Requirements" of "18 Dimensional Inspection", the requirements for the height deviation of the disc suspension insulator structure are added (see 18:1);
--- Modified the content of chapter "19 Residual Mechanical Strength Test", and improved the quality index of the residual mechanical strength test judgment criteria
and requirements (see Chapter 19), and are listed as mechanically equivalent design items (see 6:1, see Chapter 18 of the:2003 edition);
--- Revised "Criteria for the determination of pin insulators" (see 21:3, see 20:3 of the:2003 edition);
--- Modified the "Test Procedure" of "Thermal Mechanical Properties Test", and modified the minimum temperature in the cooling and heating cycle from "-30 °C ± 5 °C" to
"-40℃±5℃", the minimum temperature difference is synchronously modified to 80K (see 22:1, see 21:1 of the:2003 edition);
--- Modified the diagram of thermomechanical performance test (see Figure 1, Figure 1 of the:2003 edition);
--- Modified the "Criteria for Operation Test" in the chapter "Checking of the Locking Device", that is, operating the locking pins of the connection marks 28 and 32
The test value has been changed from the note to the formal selection parameter, and the relevant parameters of the connection marks 36 and 40 have been added (see 24:6 and Table 3, see
23:5 of the:2003 edition);
--- Modified the content of the chapter "Temperature Cycling Test": The article titled "Porcelain Insulator String Elements, Pin Insulators and Line Post Insulators"
"Test procedures for insulators" is rewritten as "Test procedures for insulator string elements, pin insulators and line post insulators":
The content of the subsection has also been revised accordingly (see 25:1, see 24:1 of the:2003 edition);
--- Deleted "Test procedures for annealed glass insulator string elements, pin insulators and line post insulators" (see the:2003 edition of
24:2); and revised the judgment criteria (see 25:4, see 24:5 of the:2003 edition);
--- Modified the description of "Test Procedure" in the "Porosity Test" chapter (see 27:1, see 26:1 of the:2003 edition);
--- Revised the "Reference Table of Pin Insulator Test Items" and added the item "Radio Interference Test" (see Table 4);
--- Revised the "Line Post Insulator Test Item Reference Table" and added the "Radio Interference Test" item (see Table 5);
---Modified the "Insulator String Component Test Item Reference Table", and added "Radio Interference Test" and "Visible Corona Electricity Test" in the type test:
"Pressure Test" and "Breakdown Tolerance Test" items; "Radio Interference Test" and "Residual Mechanical Strength Test" are added to the sampling test
Item, the item "Breakdown Resistance Test" was revised (see Table 7);
--- Modified the "Constants for Type Tests" (see 38:1) in the chapter "Statistical Analysis Constants for Test Results of Insulator String Elements", and therefore in
In 6:1, the description of "Appendix C is not applicable to disc suspension insulator string elements with SFL≥160kN" is added (see 6:1);
--- Added "Sampling test constants for disc suspension insulators with SFL ≥ 160kN" (see 38:2);
--- Modify the title of "Sampling Test Constant" to "Sampling Test for Long Rod Insulators and Disk Suspension Insulators with SFL < 160kN
constants" (see 38:3);
--- Modified the description of "Test of Insulators for Overhead Electric Traction Lines" (see Chapter 40);
--- Added Appendix D (normative) "Radio Interference Test Specified Parameters" as the basis for the determination of the new test (see Appendix D):
This document uses the redrafted method to modify the use of IEC 60383-1:1993 "Overhead Line Insulators with a Nominal Voltage Above 1000V"
Part 1: Definitions, test methods and criteria for determination of porcelain and glass insulator components for AC systems:
Compared with IEC 60383-1:1993, this document has many structural adjustments: Appendix A lists this document and IEC 60383-1:
1993 chapter numbering comparison list:
Compared with IEC 60383-1:1993, there are technical differences between this document and the clauses involved in these differences have been specified in the outer margin of the document:
The vertical single line (|) at the white position is marked: A list of these technical differences and their reasons is given in Appendix B:
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):
This document is drafted by: Xi'an High Voltage Electric Apparatus Research Institute Co:, Ltd:, China Electric Power Research Institute Co:, Ltd:, Suzhou Electric Power Research Institute
Porcelain Factory Co:, Ltd:, Dalian Electric Porcelain Group Power Transmission and Transformation Materials Co:, Ltd:, Sichuan Global Insulator Co:, Ltd:, China Southern Power Grid Scientific Research
Institute Co:, Ltd:, General Electric Power Planning and Design Institute, Nanjing Electrical Insulator Co:, Ltd:, National Insulator Arrester Quality Supervision and Inspection Center,
Inner Mongolia Jingcheng High Voltage Insulator Co:, Ltd:, Chongqing University, Sediwell Glass Insulator (Shanghai) Co:, Ltd:, State Grid Zhejiang Provincial Electric Power Co:, Ltd:
Power Co:, Ltd: Electric Power Research Institute, Guangdong Power Grid Co:, Ltd: Electric Power Research Institute, China Railway Research Institute Group Co:, Ltd:
Driver Vehicle Research Institute, State Grid Jibei Electric Power Co:, Ltd: Intelligent Distribution Network Center, China Electric Power Engineering Consulting Group East China Electric Power Design Institute,
Sinoma Jiangxi Electric Porcelain Electric Co:, Ltd:, Jiangxi Baixin Electric Porcelain Electric Co:, Ltd:, Pingxiang Huawei Electric Porcelain Technology Co:, Ltd:, China Qualified
Assessment National Accreditation Center, China Railway Guocai Insulation Materials Co:, Ltd:, Pingxiang Best Electric Porcelain Co:, Ltd:, Chongqing Pigeon Electric Porcelain Co:, Ltd:,
Zibo Electric Porcelain Factory Co:, Ltd:, Zhejiang Tailun Insulator Co:, Ltd:, Pingxiang Hiklaas Electric Porcelain Co:, Ltd:, State Grid Tibet Electric Power Co:, Ltd:
Co:, Ltd: Electric Power Research Institute, Pingxiang Huatong Electric Porcelain Manufacturing Co:, Ltd:, Hunan Yangdong Electric Porcelain Electric Co:, Ltd:, Pingxiang City, Jiangxi Province
East China Export Electric Porcelain Co:, Ltd:, Nankeng High Voltage Electric Porcelain Factory, Pingxiang City, Jiangxi Province, Liling Huaxin Electric Porcelain Technology Co:, Ltd:, Zigong Hongxing High Voltage
Piezoelectric Porcelain Co:, Ltd:, Shandong Ruitai Glass Insulator Co:, Ltd:, Sanrui Technology (Jiangxi) Co:, Ltd:, State Grid Liaoning Electric Power Co:, Ltd:,
Luxi County Electric Porcelain Electric Industry Administration, Pingxiang City, Jiangxi Province Nanxi Electric Porcelain Electric Manufacturing Co:, Ltd:, Pingxiang City, Jiangxi Province Yuxiang Electric Porcelain Manufacturing Co:, Ltd:
Co:, Ltd:, Jiangxi Gaoqiang Electric Porcelain Group Co:, Ltd:, Jiangxi Quanxin Electric Co:, Ltd:, Hunan Hudian Electric Power Equipment Co:, Ltd:
The main drafters of this document: Hu Wenqi, Deng Tao, Lu Zhou, Zhang Jijun, Zeng Hong, Li Qingfeng, Luo Bing, Wei Peng, Li Yongshuang, Zhao Hui, Jia Jiangbo,
Shi Yubing, Xiang Liang, Wang Yunpeng, Liu Zhiqiang, Wang Zhijun, Jiang Xinliang, Yang Ming, Wang Shaohua, Peng Xiangyang, Guo Chenxi, Liu Yaxin, Huang Weizhong, Zhang Xuchang,
He Yuanhua, Zhang Xuejun, Zhang Rui, Shen Ziqiang, Hu Wenhua, Chen Di, Liu Jiasheng, Yao Junrui, Luo Hanying, Wang Xingfang, Wu Yanhong, Yu Xianghua, Xiaobuqiong,
Liu Mingzhong, Li Zhiqun, Xie Xiyun, Liu Xiaoxing, Huang Gang, Gu Chuanhua, Wei Xuepeng, Lu Haixia, Shi Yuqi, Liu Zhiping, Chen Gang, Liu Chunlei, Yang Fanglei,
Su Huan, Chen Zhaoming, Cai Haiduo, Zhou Wenbing:
The previous versions of this document and its superseded documents are as follows:
--- First published in 1967 as GB 1001-1967, first revised in 1980, second revised in 1986;
---In the third revision in 1988, the content of GB 1000:1-1988 "Technical Conditions for Pin-Type Porcelain Insulators for High Voltage Lines" was incorporated
(The previous releases of GB 1000:1-1988 are: GB 1000-1967, GB 1000-1981);
---In the fourth revision in:2003, JB/T 8179-1999 "Dimensions and Characteristics of Porcelain Cross-arm Insulators for High Voltage Lines" and
JB/T 9676-1999 "Technical Conditions for Porcelain Cross-arm Insulators for High-Voltage Lines", also incorporated into GB 11030-2000 "AC Pull
Rod-shaped porcelain insulators for lead lines "Technical conditions", JB/T 8509-1996 "High-voltage line column-shaped porcelain insulators" technology
The condition part and the technical condition part of JB9681-1999 "Fouling Resistant Disk Suspension Insulators for High Voltage Lines", and this time
In the revision, GB/T 1001 was changed to a series of standards, divided into Part 1 and Part 2, namely, GB/T 1001:1-2003;
---This is the fifth revision:
Introduction
Overhead line insulators with nominal voltage higher than 1000V cover insulator elements and insulator strings and insulator string groups:
Types of porcelain or glass insulator components for AC systems cover single use pin insulators, line post insulators, overhead power
Insulators and insulator string elements for traction lines, insulator string elements can be used alone, or can be combined into insulator strings, insulator string groups
use:
Insulator strings and insulator string groups are composed of insulator string elements, and their definitions, test methods and acceptance criteria are different from those of insulator elements:
Therefore, GB/T 1001 "Overhead line insulators with nominal voltage higher than 1000V" consists of two parts:
--- Part 1: Definitions, test methods and criteria for determination of porcelain or glass insulator components for AC systems:
--- Part 2: Definition, test methods and acceptance criteria for insulator strings and insulator strings for AC systems:
This document is Part 1 of GB/T 1001, which discusses the definitions, test methods and
Acceptance criteria:
--- Pin insulators;
---Line post insulator;
---Insulator string components;
--- Insulators for overhead electric traction lines:
Clauses 31, 33 and 36 give references to the tests applicable to insulators and the quantities to be tested:
There is no reference table for insulators for overhead electric traction lines discussed in Chapter 40, because insulators for overhead electric traction lines can be referred to
One of the other three types of insulators described in this document:
Users of this document are only required to refer to the chapter relevant to the type of insulator being tested and the requirements contained in Chapters 6 to 30 and
related test procedures:
According to the actual situation in our country, although there is not enough evidence to show that the disc-shaped suspension porcelain or glass insulator string elements can survive in normal use
In the mechanical load related to the impact test, but in order to facilitate the parties to consult the relevant information, this document will use the information of the impact test as data
Included, that is, an informative appendix F has been added:
Overhead line insulators with nominal voltage higher than 1000V
Part 1: Porcelain or glass insulator elements for AC systems
Definitions, Test Methods and Judgment Criteria
1 Scope
This document defines the terms and characteristics of porcelain or glass insulator elements for overhead lines (hereinafter referred to as insulators), specifies the inspection characteristics
Conditions for specified values, test methods and judgment criteria:
This document applies to ceramic and glass insulation for AC overhead power and traction lines with a nominal voltage higher than 1000V and a frequency not exceeding 100Hz:
Insulators, and definitions, test methods and criteria for insulators for DC overhead electric traction lines:
This document also applies to the definition and testing of insulator string elements, rigid insulators for overhead lines and insulators of similar construction used in substations
Methods and Judgment Criteria:
This document does not apply to insulators constituting electrical components, or components in electrical structures, as well as those listed in GB/T 8287 (all parts)
Definitions, test methods and criteria for determination of post insulators are included:
Test methods (eg, wet operating impulse voltage) and acceptance criteria for insulator strings and insulator groups are in GB/T 1001:2-2010
exposition:
Note 1: This document does not include artificial contamination test, the test method is discussed in GB/T 4585-2004:
This document does not include requirements for the selection of insulators for specific operating conditions:
Note 2: See GB/T 26218:2-2010 for guidelines on selecting insulators under dirty conditions:
The characteristic values of insulators are specified in the corresponding product standards:
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 2900:8-2009 Electrical terminology insulators (IEC 60050-471:2007, IDT)
GB/T 4056-2019 Ball and socket connection dimensions of insulator string elements (IEC 60120:1984, MOD)
GB/T 8411:1 Ceramic and glass insulating materials Part 1: Definition and classification (GB/T 8411:1-2008, IEC 60672-1:
1995, MOD)
GB/T 8411:3 Ceramic and Glass Insulating Materials Part 3: Material Properties (GB/T 8411:3-2009, IEC 60672-3:
1997, MOD)
GB/T 16927:1 High Voltage Test Technology Part 1: General Definitions and Test Requirements (GB/T 16927:1-2011,
IEC 60060-1:2010, MOD)
GB/T 20642-2006 High Voltage Line Insulators Impact Breakdown Test in Air (IEC 61211:2004, MOD)
GB/T 21206-2007 Characteristics of line post insulators (IEC 60720:1981, MOD)
GB/T 24623 High Voltage Insulator Radio Interference Test (GB/T 24623-2009, IEC 60437:1997, MOD)
GB/T 25317-2010 Groove connection dimensions of insulator string elements (IEC 60471:1977, IDT)
GB/T 25318-2019 Dimensions and tests of locking pins for ball and socket connections of insulator string elements (IEC 60372:1984, MOD)
JB/T 8177 General technical requirements for hot-dip galvanized coating of insulator metal accessories
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