CLC/SR 36C - Insulators for substations

Applies to hollow insulators made of ceramic material, with their fixing devices, intended for use with a permanent gas pressure greater than 50 kPa gauge having an internal volume equal to or greater than 1 l (1 000 cm3). They are intended for use in electrical equipment operating on alternating current with a rated voltage greater than 1000 V and a frequency not greater than 100 Hz or for use in direct current equipment with a rated voltage greater than 1 500 V.

Applies to insulating weather shields and containers made of ceramic material or glass before any metal fittings are attached intended for use in electrical equipment operating on d.c. or a.c., such as instrument transformers, lightning arresters. capacitors, bushings, cable sealing ends and circuit-breakers.