One power system has a maximum short circuit current of 8,000 A.
Use an overcurrent relay to protect by passing the current transformer (CT) with a test rate of 500/5 A to calculate Plug Setting Multiplier (PSM) value?
When adjusting the current to 150%
A. 6.0
B. 8.76
C. 9.56
D. 10.67
Show Answer
Answer: D
Share your understanding of this question with the correct explanation.