GB/T 22707-2008 (English Version) Artificial pollution tests on high-voltage insulators to be used on d.c.systems

Standard No.: GB/T 22707-2008
Language: Chinese, Available in English version
Release Date: 2008
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 22707-2008

Scope: The artificial pollution test procedures specified in this standard are applicable to insulators for DC overhead lines, substation insulators and traction lines, as well as bushings with suitable protection against internal damage and hollow core insulators for other equipment. When these procedures are applied to equipment incorporating hollow insulators, the technical committee concerned shall consider the effect on internal installations and the possible need for special protective equipment. This standard applies to the determination of the resistance characteristics of porcelain and glass insulation used outdoors in DC systems with a voltage of ±1000V to ±800kV and exposed to dirty environments. These experiments cannot be directly applied to fabricated insulators of organic materials, composite insulators, insulators coated with grease, or special types of insulators (semiconductor glaze insulators or insulators covered with any organic material).

GB/T 22707-2008 Referenced Document

GB/T 16927.1-1997 High-voltage test techniques. Part 1: General test requirements

2008 GB/T 22707-2008 Artificial pollution tests on high-voltage insulators to be used on d.c.systems