AS 1137.3-1981

Covers materials, characteristics, fixing arrangements, and type, batch and routine tests, for insulators and insulator units designed to provide rigid support for busbars, parts of isolators, parts of air-break switches and other conductors in stations and for similar applications, but does not apply to insulators for supporting overhead transmission line conductors nor to bushing insulators. An appendix deals with selection and application of post insulators.