LSIS EMPR Series - Page 80

MMP Series












Selective Ground Fault Protection



Operating characteristic





87°
3°
3°
방향기준각
억제영역
동작영역
-Vo


R
T
S
변압기
CB1
In
Ir
C1 C2 C3 C4
GPT
CLR
Ig
Rg
ZCT
1
Feeder 1
Ic
1 Ic 2 Ic 3 Ic 3
Feeder 2 Feeder 3 Feeder 4
ZCT
2 ZCT 3 ZCT 4
S EMPR
S EMPR S EMPR S EMPR
CB2 CB3 CB4






LSIS Co.,Ltd. 79