GOST 6433.1-1971 Solid electrical insulating materials. Environmental conditions at preparation of samples and testing
GOST 6433.3-1971 Solid electrical insulating materials. Methods for evaluation of electrical strength at a. c. voltage at power (50 Hz) frequency and d. c. voltage
GOST 27710-1988 history
1988GOST 27710-1988 Electrical insulating materials. General requirements for thermal endurance test method