Ten classes of electrical insulating papers, excluding varnished papers, asbestos papers, and papers used in the manufacture of cables. Limiting values for thickness, substance, electric strength, mineral ash, conductivity of water extract, heat-ageing (assessed by decrease of bursting strength or tearing strength) and freedom from conducting paths (capacitor tissue paper only). Ranges of values for tensile strength, tearing strength (optional requirements), oil absorption, air permeability and pH val ue. Test methods (including optional test for chloride content), methods of conditioning and heat-ageing appended.

? British Standards Institution 2013

Replaces notes:
Replaces BS 698:1936.

Replaced by notes:
Replaced by BS 4295:1968 and Parts and Sections of BS 5626.

Amendment notes:
PD 3249
PD 4630

BS 4295:1968

BS 5626-3.4:1980

BS 5626-3.3:1982

BS 5626-3.1:1981

BS 5626-1:1979

AS C85-1967 - Identical