scope:

1.1 This specification covers an ozone-resisting crosslinked rubber insulating compound for electrical wires and cables. The polymer shall consist substantially of butyl rubber.

1.2 This type of insulation is considered suitable for use at not more than 15 000 V between phases at an insulation level of 133% or 28 000 V between phases at an insulation level of 100%. The conductor temperature shall not exceed 85°C for an operating voltage of 15 000 V or less, and shall not exceed 80°C for an operating voltage above 15 000 V.

1.3 The values stated in parentheses are for information purposes only.