IS 10026 Pt.3/Sec.6-1983 Specifications for solvent-containing insulating varnishes Part 3 Individual material specifications Section 6: Air-drying varnishes with a temperature index of 155
1.1 This standard ( Part 3/Sec 6 ) covers the requirements for both impregnating and finishing insulating varnishes containing solvents, curing of which requires the application of heat and which are of temperature index 155.
1.2 Impregnating varnishes are classified in two types, namely:
a) flexible, and
b) hard.