GB/T 22708-2008Thermal-mechanical performance test and mechanical performance test on string insulator units (English PDF)

Foreword

This revised standard adopts IEC/T R60575. 1977 "heat engine and mechanical properties of the test string insulator" (first edition).

This standard is based on IEC/T R60575. 1977 redrafted. For ease of comparison, the data are listed in Appendix B of the Standard Terms and Conditions and IEC/T R60575. 1977 clauses control list.

Taking into account China's national conditions, in using IEC/T R60575. 1977, the standard of this made some changes. These technical differences vertical in terms of single-line identification page margin which they relate. We give a list of those technical differences and their causes in Appendix C for reference.

For ease of use, this standard also made the following editorial changes.

a) "The report" be replaced by "this standard";

b) Remove IEC/T R60575. 1977 Foreword and purpose, the purpose of the note incorporated in scope;

c) increase the "Normative references" and "Terms and definitions" chapters.

The Standard Appendix A, Appendix B, Appendix C are informative appendices.

The standard proposed by China Electrical Equipment Industrial Association.

This standard by the National Standardization Technical Committee Insulators (SAC/TC80) centralized.

This standard was drafted. National Insulator arrester Quality Supervision and Inspection Center, the Xi'an Institute of Electric Porcelain, Shaanxi Provincial Power Company, Liaoning Province electricity company.

1 Scope

This standard specifies the porcelain or glass insulator strings having insulating member nominal voltage greater than 1000V AC and DC overhead lines of Heat engine and mechanical performance test method components.

This standard also applies to the substation insulator having a similar structure.

Note 1. This standard applies to the disc-shaped suspension insulator string element and a long rod insulators string element.

Note 2. The heat engine performance test is recommended as a primary test. The mechanical properties of the test as a secondary additional tests and checks only for testing, the need for and the number of samples negotiated by both parties.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 1001.1-2003 nominal voltage above 1000V Insulators for overhead lines - Part 1. Ceramic or glass AC system Glass insulator element definitions, test methods and acceptance criteria (IEC 60383-1:1993, MOD) GB/T 2900.8 Electrotechnical terminology insulator (GB/T 2900.8-1995, eqv IEC 60050-471. 1984)

3 Terms and Definitions

Terms and definitions GB/T 2900.8 established apply to this standard.

4 Heat engine performance test