ABB Relion 620 Series - Page 43

1MAC308145-MB E Section 3
RER620 application
RER620 37
Application Manual
Figure 16: Sensitive earth fault protection
OR6
B1 B2 B3 B4 B5 B6
O
EFLPTOC3(50SEF;
BLOCK ENA_MULT
TRIP
PICKUP
OR6
B1 B2 B3 B4 B5 B6
O
OR6
B1 B2 B3 B4 B5 B6
O
OR
B1 B2
O
SPCGGIO1_O9_GND_BLOCK
SPCGGIO1_O12_50SEF_BLOCK
EFLPTOC3_50SEF_OPERATE
INRPHAR1_INR_BLK2H
SPCGGIO1_O7_SWITCH_MODE
EFLPTOC3_50SEF_BLOCK_IN3
NEUTRAL_PROT_BLOCK
NEUTRAL_PROT_ENA_MULT
UNBALANCE_PROT
XEFHPTOC3_50N-2_START
XEFLPTOC2_51N_START
XEFLPTOC3_50N-1_START
XEFIPTOC2_50N-3_START
EFLPTOC3_50SEF_BLOCK_IN1
EFLPTOC3_50SEF_BLOCK_IN1 EFLPTOC3_50SEF_BLOCK_IN2