NF C26-303-1:1991 Determination of thermal endurance properties of electrical insulating materials. Instruction for calculating thermal endurance characteristics. Section 1 : calculations using mean values of normally distributed complete data.
2002NF C26-303:2002 Electrical insulating materials - Thermal endurance properties - Part 3 : instructions for calculating thermal endurance characteristics.
1991NF C26-303-1:1991 Determination of thermal endurance properties of electrical insulating materials. Instruction for calculating thermal endurance characteristics. Section 1 : calculations using mean values of normally distributed complete data.