Type

ET

E

EE

Voltage Grade

250V

600V

1000V

Dielectric test

1500 VAC

2000VAC

3000 VAC

Spark test

2500 VAC

3400 VAC

5000 VAC

Insulation resistance (MOhm/Km) @ 20 °C

15290 log(D/d)

D= diameter over insulation

d= conductor diameter