Determine the time of operation of a relay of rating 5 A, 2.2s IDMT and having a relay setting of 125%, TMS = 0.6. It is connected to the supply circuit through a CT 400 : 5 ratio. The fault current is 4000 A.PSM25810Time1083.22.5

Determine the time of operation of a relay of rating 5 A, 2.2s IDMT an

1.	Determine the time of operation of a relay of rating 5 A, 2.2s IDMT and having a relay setting of 125%, TMS = 0.6. It is connected to the supply circuit through a CT 400 : 5 ratio. The fault current is 4000 A.PSM25810Time1083.22.5
A.	1.89 s
B.	1.87 s
C.	1.93 s
D.	1.92 s
Answer» E.