ABB relion REF615 Applications Manual page 67

1MRS756378 S
REF615
Application Manual
Residual overvoltage protection ROVPTOV1 provides earth-fault protection by
detecting an abnormal level of residual voltage. This can be used, for example, as a
nonselective backup protection for the selective directional earth-fault functionality.
ROVPTOV1_OPERATE
ROVPTOV2_OPERATE
ROVPTOV3_OPERATE
GUID-57D2326C-BF0D-4A76-B414-828A0FAFE035 V1 EN
Figure 31: Residual voltage protection function
General start and operate from all the functions are connected to minimum pulse timer
TPGAPC1 for setting the minimum pulse length for the outputs. The output from
TPGAPC1 is connected to binary outputs.
REF615 standard configurations
ROVPTOV1
BLOCK OPERATE
START
ROVPTOV2
BLOCK OPERATE
START
ROVPTOV3
BLOCK OPERATE
START
OR6
B1 O
B2
B3
B4
B5
B6
Section 3
ROVPTOV1_OPERATE
ROVPTOV1_START
ROVPTOV2_OPERATE
ROVPTOV2_START
ROVPTOV3_OPERATE
ROVPTOV3_START
ROVPTOV_OPERATE
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