4 thyristors rated 200 V in series. The operating voltage of the string is 600 V. Derating factor of the string is_____________________?
A. 0.75
B. 0.7
C. 0.2
D. 0.25
4 thyristors rated 200 V in series. The operating voltage of the string is 600 V. Derating factor of the string is_____________________?