GB/T 26218.3-2011 (English Version) Selection and dimensioning of high-voltage insulators intended for use in polluted conditions.Part 3:Composite insulators for a.c.systems

Standard No.: GB/T 26218.3-2011
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 26218.3-2011

Scope: This part of GB/T 26218 gives the guidelines and principles for judging the general characteristics of specific insulators in certain polluted environments. This Part applies to the selection and dimensioning of composite insulators for high-voltage AC systems under polluted conditions. The content of this part is based on the CIGRE33.13TF01[1][2] document, and researchers who want to study the performance of insulators under polluted conditions can use this document as a useful supplement. This section does not involve the impact of ice and snow on polluted insulators. Although CIGRE[3] has done some research on this, the existing data are scarce and the experience varies greatly. The purpose of this part is to: - determine the reference unified creepage specific distance (RUSCD) by site pollution degree (SPS); - select the appropriate umbrella shape; , installation position and other corrections.

GB/T 26218.3-2011 Referenced Document

GB/T 24622-2009 Guidance on the measurement of wettability of insulator surfaces
GB/T 26218.1-2010 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions.Part 1:Definitions,information and general principles
GB/T 2900.8-2009 Electrotechnical terminology.Insulators

2011 GB/T 26218.3-2011 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions.Part 3:Composite insulators for a.c.systems