The voltage in the power distribution room is 10kV, and the 8mm thick power frequency withstand voltage test is 10000v, without breakdown for 1 minute. In the power frequency withstand voltage test is 18000V, with breakdown for 20 seconds.
The voltage in the power distribution room is 35kV, 10-12mm thick, the power frequency withstand voltage test is 15000V, and there is no breakdown for 1 minute. In the power frequency withstand voltage test is 26000v, and there is breakdown for 20 seconds.
For the low voltage in the distribution room, choose 3500v for the power frequency withstand voltage test below 500V with a thickness of 5mm, and do not break down for 1 minute. For the power frequency withstand voltage test of 10000v, do not break down for 20 seconds!
