IS 5350 Pt.3-1971 Dimensions of indoor and outdoor porcelain post insulators and post insulator units for systems with nominal voltages greater than 1000 V Part III Outdoor base post insulators
This standard ( Part III) applies to pedestal type post insulator and post insulator units of ceramic materials intended for outdoor service in electrical installations or equipment operating on alternating current with a rated voltage greater than 1 000 V and a frequency not greater than 100 Hz. The insulators covered by this standard are primarily intended for use in isolators ( disconnectors) or as bus bar or as fuse supports.
IS 5350 Pt.3-1971 history
1972IS 5350 Pt.3-1971 Dimensions of indoor and outdoor porcelain post insulators and post insulator units for systems with nominal voltages greater than 1000 V Part III Outdoor base post insulators