GB/Z 28818-2012 Selection guide for polymeric materials for outdoor use under HV stress
GB/Z 28818-2012 Selection guide for polymeric materials for outdoor use under HV stress
Basic Information
Scope
This guidance technical document specifies the important material properties of outdoor polymer insulation materials, and lists the standard test methods with minimum requirements when the materials are applicable. If there are no applicable standard test methods, refer to the test methods summarized in this guidance technical document.
This guidance technical document is applicable to outdoor high-voltage polymer insulation materials with a system voltage higher than 1,000 V AC, and also includes applications where the shell is an integral part of the equipment, such as in lightning arresters and cable terminals. The scope of this guidance technical document is limited to these materials. The performance of insulators depends on several factors, such as the type of material, design, and environmental conditions. Therefore, when selecting materials, it is necessary to meet the following requirements, but this does not guarantee that the materials will perform satisfactorily when used for outdoor insulation.