ABB Relion 615 series - Page 183

Negative-sequence overvoltage NSPTOV1_47-1 and NSPTOV2_47-2 protection
functions enable voltage-based unbalance protection.
The residual overvoltage protections ROVPTOV1_59N-1 and ROVPTOV2_59N-2
provide ground-fault protection by detecting abnormal level of residual voltage. They can
be used, for example, as a nonselective backup protection for the selective directional
ground-fault functionality.
PHPTUV1_27-1, PHPTOV1_59-1, NSPTOV1_47-1 and ROVPTOV1_59N-1use the
source 1 (bus 1) voltages whereas PHPTUV2_27-2, PHPTOV2_59-2, NSPTOV2_47-2
and ROVPTOV2_59N-2 use the source 2 (bus 2) voltages.
PHPTUV1
O:74|T:5|I:1
BLOCK TRIP
PICKUP
PHPTOV1
O:70|T:5|I:1
BLOCK TRIP
PICKUP
NSPTOV1
O:71|T:5|I:1
BLOCK TRIP
PICKUP
ROVPTOV2
O:68|T:5|I:2
BLOCK TRIP
PICKUP
SEQRFUF1_60-1_FUSEF_U
SEQRFUF1_60-1_FUSEF_U
SEQRFUF1_60-1_FUSEF_U
PHPTOV1_59-1_TRIP
PHPTUV1_27-1_TRIP
NSPTOV1_47-1_TRIP
ROVPTOV2_59N-1_TRIP
GUID-BFCBE7A4-59BD-42CA-B435-04E8F234AF9F V1 EN
Figure 232: Voltage functions on bus 1
1MAC109016-MB C Section 3
REF615 standard configurations
REF615 ANSI 177
Application Manual