ABB RELION 615 Series Applications Manual page 55

1MAC109016-MB C
REF615 ANSI
Application Manual
GUID-5FAEFBEC-C27F-450F-8031-9B51ECEBEE72 V1 EN
Figure 17: Inrush detector function
Two negative-sequence overcurrent protection stages NSPTOC1_46-1 and
NSPTOC2_46-2 are provided for phase unbalance protection. These functions are used to
protect the feeder against phase unbalance.
NSPTOC1_46-1_TRIP
NSPTOC2_46-2_TRIP
GUID-F3410D3C-843F-4124-B412-F32601AE0359 V1 EN
Figure 18: Negative-sequence overcurrent protection function
Three stages are provided for non-directional ground-fault protection. One stage is
provided for sensitive ground-fault protection.
REF615 standard configurations
INRPHAR1
BLOCK BLK2H
O:69|T:2.5|I:1
NSPTOC1
BLOCK TRIP
ENA_MULT PICKUP
O:24|T:5|I:1
NSPTOC2
BLOCK TRIP
ENA_MULT PICKUP
O:25|T:5|I:2
OR
B1 O
B2
O:87|T:2.5|I:14
Section 3
INRPHAR1_INR-1_BLK2H
NSPTOC1_46-1_TRIP
NSPTOC1_46-1_PICKUP
NSPTOC2_46-2_TRIP
NSPTOC2_46-2_PICKUP
NSPTOC_TRIP
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