HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

GB/T 34937-2017 English PDF

US$659.00 · In stock
Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 34937-2017: Insulators for overhead lines - Composite suspension and tension insulators for d.c. systems with a nominal voltage greater than 1 500 V - Definitions, test methods and acceptance criteria
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 34937-2017English659 Add to Cart 7 days [Need to translate] Insulators for overhead lines - Composite suspension and tension insulators for d.c. systems with a nominal voltage greater than 1 500 V - Definitions, test methods and acceptance criteria Valid GB/T 34937-2017

PDF similar to GB/T 34937-2017


Standard similar to GB/T 34937-2017

DL/T 1000.1   DB12/ 356   DL/T 1000.3   GB/T 44179   GB/T 34939.1   

Basic data

Standard ID GB/T 34937-2017 (GB/T34937-2017)
Description (Translated English) Insulators for overhead lines - Composite suspension and tension insulators for d.c. systems with a nominal voltage greater than 1 500 V - Definitions, test methods and acceptance criteria
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K48
Classification of International Standard 29.080.10
Word Count Estimation 33,384
Date of Issue 2017-11-01
Date of Implementation 2018-05-01
Regulation (derived from) National Standard Announcement 2017 No. 29
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34937-2017: Insulators for overhead lines - Composite suspension and tension insulators for d.c. systems with a nominal voltage greater than 1 500 V - Definitions, test methods and acceptance criteria



---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.
Insulators for overhead lines-Composite suspension and tension insulators for dcsystems with a nominal voltage greater than 1 500 V-Definitions, test methods and acceptance criteria ICS 29.080.10 K48 National Standards of People's Republic of China Overhead line insulators nominal voltage higher than 1500V DC system with overhang and tensile composite insulators Definitions, test methods and acceptance criteria Posted.2017-11-01 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ Introduction IV 1 Scope 1 2 Normative references 1 3 Terms, definitions and abbreviations 2 3.1 Terms and definitions 2 3.2 Abbreviations 4 logo 3 5 environmental conditions 3 6 Transport, storage and installation 3 7 tolerance 3 8 test classification 4 8.1 Design Test 4 8.2 Type Test 4 8.3 Sampling test 4 8.4 one by one experiment 4 9 Design Test 4 9.1 General 4 9.2 Interface and end fitting connection test 7 9.3 Umbrella and umbrella cover material test 8 9.4 core material test 11 9.5 Assembled mandrel load - time trial 13 10 type test 13 10.1 General 13 10.2 Electrical test 13 10.3 Damage Limit Verification Test and Seal Test of End Assembly and Insulator Umbrella Interface 14 11 Sample Test 15 11.1 General 15 11.2 Dimensional inspection (E1 E2) 16 11.3 End Assembly Inspection (E2) 16 11.4 Seal inspection (E2) and SML verification (E1) at the interface between the end fitting and the boot 16 11.5 Zinc plating test (E2) 16 11.6 Impact test in air 17 11.7 Repeat Test Procedure 17 12 one by one experiment 17 12.1 Mechanical tests one by one 17 12.2 Visual Inspection 17 Appendix A (Informative) Damaging and tensile composite insulators damage limit, loading and testing principles 18 Appendix B (Informative) Drape and tensile composite insulators non-standard mechanical stress and mechanical dynamic load 21 Appendix C (Informative) Typical Rod Suspension Composite Insulators for DC Engineering 22 Appendix D (informative) two examples of sudden unloading device 23 Appendix E (Normative) DC composite insulators artificial contamination test method solid layer method 24 References 28

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of this document may be patentable. The issuing agencies of this document do not bear the responsibility of identifying these patents. This standard proposed by the China Electrical Equipment Industry Association. This standard by the National Standardization Technical Committee insulator (SAC/TC80) centralized. This standard drafting unit. Tsinghua University, Xi'an High Voltage Apparatus Research Institute Co., Ltd., China Electric Power Research Institute, State Grid Corporation Division, the State Insulator Arrester Quality Supervision and Inspection Center, Guangdong Power Grid Corporation, Dongguan City, high-energy Electric Co., Ltd., Guangzhou City, Power Co., Ltd., Xiangyang State Grid Composite Insulator Co., Ltd., Xinjiang Xinneng Tinian Electrical Insulation Materials Co., Ltd., Dalian, porcelain set Mission Holdings Limited, Shandong Tai Kwong Electric Co., Ltd., Chongqing University. The main drafters of this standard. Liang Xi Dong, Yao Junrui, a Chi, Wu Guangya, Wang Shaowu, Zhou Jun, Li Qingfeng, Dan Peng, Liao Yiqiang, Wang Jiafu, Zhao Hui, Huang Zi Rong, Ouyang Xudan, Yang Hongjun, 綦 East Bao, Chen Yanping, Teng Guoli, Hu Qin.

Introduction

The composite insulator consists of an insulating mandrel, an umbrella cover and an end fitting, which bear a mechanical load and are protected by a polymeric umbrella cover, Accessories permanently installed on the insulating mandrel. Mechanical loads are transmitted to the mandrel through the end fitting. Despite these common features, different systems The details of the materials used by the builder and the structure used may still vary widely. Some tests are grouped together as a "design test," requiring only one insulator with the same design conditions. On the drape and anti-Zhang Fu Insulator of the design test, GB/T 22079-2008 applicable to the provisions of the applicable general terms apply. Time for composite insulators and The effects of the electrical and mechanical properties of its components (mandrel, umbrella cover, interface, etc.) have been taken into account in the prescribed design tests to ensure that the transmission line Conventional known stress conditions, the life characteristics of composite insulators meet the requirements. Appendix A describes the damage limit, load with the test and its Explain the principle. This standard does not consider the power frequency arc test as one of the product standard test. Due to the different structure of transmission network and tower, as well Arc protection device design is different, the test parameters and their values varied. The use of properly designed power frequency arc protection devices can be avoided Short circuit current amplitude and duration of the end fittings caused serious damage. However, this standard does not exclude the agreement by the supply and demand of power frequency arc Possibility of testing. GB/T 25084-2010 gives the details of the insulator frequency arc test. Suspension and tensile composite insulators are generally not subject to torsional or other non-tensile loads, Appendix B gives non-standard mechanical load guidelines. Insulator size and characteristics do not belong to the scope of this standard. To facilitate the use of this standard, Appendix C gives a typical DC engineering Characteristics of Rod Suspension Composite Insulators. This standard GB/T 19519 "Overhead line insulators nominal voltage higher than 1000V AC system with suspended and tensile composite insulation Sub-definition, test methods and acceptance criteria "based on the sum of China's DC line with rod-shaped suspended composite insulator R & D, manufacturing, testing And operating experience to prepare. Overhead line insulators nominal voltage higher than 1500V DC system with overhang and tensile composite insulators Definitions, test methods and acceptance criteria

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

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 34937-2017_English be delivered?

Answer: Upon your order, we will start to translate GB/T 34937-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 7 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 34937-2017_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 34937-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.