GB/T 34937-2017Insulators for overhead lines - Composite suspension and tension insulators for d.c.systems with a nominal voltage greater than 1500 V - Definitions, test methods and acceptance criteria (English PDF)
架空线路绝缘子 标称电压高于1500 V直流系统用悬垂和耐张复合绝缘子 定义、试验方法及接收准则
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 1, 2017
Implementation date
May 1, 2018
Scope
GB/T 34937-2017 is the English-translated version of 架空线路绝缘子 标称电压高于1500 V直流系统用悬垂和耐张复合绝缘子 定义、试验方法及接收准则.
GB/T 34937-2017 is the Chinese standard "Insulators for overhead lines - Composite suspension and tension insulators for d.c.systems with a nominal voltage greater than 1500 V - Definitions, test methods and acceptance criteria".
Its scope clause reads: This standard specifies the definition, test methods and acceptance criteria for composite insulators for overhead lines (hereinafter referred to as insulators).
This standard applies to DC lines, converter station overhangs and tension with insulator. Note 1. These insulators may also be subjected to compression or bending loads on some occasions.
Note 2. China's power system recommends the use of high temperature vulcanized silicone rubber as the umbrella cover material. This standard does not include the selection of insulators according to specific operating conditions.
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Document preview — GB/T 34937-2017
National Standard of the People's Republic of China
- ICS
- 29.080.10
- Classification
- K 48
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and abbreviations
- 3.1 Terms and definitions
- 3.2 Abbreviations
- 4 logo
- 5 environmental conditions
- 6 Transport, storage and installation
- 7 tolerance
- 8 test classification
- 8.1 Design Test
- 8.2 Type Test
- 8.3 Sampling test
- 8.4 one by one experiment
- 9 Design Test
- 9.1 General
- 9.2 Interface and end fitting connection test
- 9.3 Umbrella and umbrella cover material test
- 9.4 core material test
- 9.5 Assembled mandrel load - time trial
- 10 type test
- 10.1 General
- 10.2 Electrical test
- 10.3 Damage Limit Verification Test and Seal Test of End Assembly and Insulator Umbrella Interface
- 11 Sample Test
- 11.1 General
- 11.2 Dimensional inspection (E1 E2)
- 11.3 End Assembly Inspection (E2)
- 11.4 Seal inspection (E2) and SML verification (E1) at the interface between the end fitting and the boot
- 11.5 Zinc plating test (E2)
- 11.6 Impact test in air
- 11.7 Repeat Test Procedure
- 12 one by one experiment
- 12.1 Mechanical tests one by one
- 12.2 Visual Inspection
- Appendix A (Informative) Damaging and tensile composite insulators damage limit, loading and testing principles
- Appendix C (Informative) Typical Rod Suspension Composite Insulators for DC Engineering
- Appendix D (informative) two examples of sudden unloading device
- Appendix E (Normative) DC composite insulators artificial contamination test method solid layer method
- References
1 Scope
This standard specifies the definition, test methods and acceptance criteria for composite insulators for overhead lines (hereinafter referred to as insulators).
This standard applies to DC lines, converter station overhangs and tension with insulator.
Note 1. These insulators may also be subjected to compression or bending loads on some occasions.
Note 2. China's power system recommends the use of high temperature vulcanized silicone rubber as the umbrella cover material.
This standard does not include the selection of insulators according to specific operating conditions.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
Rubber, vulcanized or thermoplastic - Determination of tensile stress - strain properties
GB/T 529 Determination of tear strength of vulcanized rubber or thermoplastic rubber (pant-shaped, rectangular and crescent-shaped specimen)
GB/T 1001.1 Overhead line insulators with nominal voltage above 1000V - Part 1. AC systems insulated with porcelain or glass
Sub-component definitions, test methods and criteria
GB/T 1001.2-2010 Insulators for overhead lines with nominal voltages above 1000V - Part 2. Insulators for AC systems
String and insulator string group definition, test methods and acceptance criteria
GB/T 1408.1 Insulating material Electrical strength test methods Part 1
GB/T 1408.2-2006 Insulating material electrical strength test methods Part 2. Application of DC voltage test additional
Claim
GB/T 1408.3-2007 Insulating materials electrical strength test methods Part 3 .1.2/50µs impact test supplementary requirements
GB/T 1410 solid insulating materials volume resistivity and surface resistivity test methods
Rubber, vulcanized, Determination of insulation resistance
GB/T 1695 vulcanized rubber power frequency breakdown voltage and withstand voltage measurement methods
Electrotechnical terminology insulators
Artificial contamination test for high voltage insulators for ac system
GB/T 5169.16-2008 Fire hazard testing for electric and electronic products Part 16. Test flame 50W Horizontal and vertical fire
Flame test method
GB/T 6553-2014 Electrical insulating materials for use in harsh environmental conditions - Test methods for resistance to tracking and erosion
Plastics laboratory exposure test methods - Part 1. General
GB/T 16422.2-2014 Plastics - Laboratory exposure test methods - Part 2. Xenon arc lamps
GB/T 16927.1 high voltage test techniques - Part 1. General definitions and test requirements
GB/T 16927.2 high voltage test techniques - Part 2. Measurement system
GB/T 18851.1 Non-destructive testing - Penetrant testing - Part 1. General […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 27 pages — is available in the English PDF.
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