ABB Relion 670 series - Page 632

Two step residual overvoltage protection ROV2PTOV (59N) function calculates the residual voltage
from the three-phase voltage input transformers or measures it from a single voltage input
transformer fed from a broken delta or neutral point voltage transformer.
ROV2PTOV (59N) has two voltage steps, each with inverse or definite time delay.
Reset delay ensures operation for intermittent ground faults.
9.3.3 Function block
M13812-3 v6
ANSI06000278-2-en.vsd
ROV2PTOV (59N)
V3P*
BLOCK
BLKTR1
BLK1
BLKTR2
BLK2
TRIP
TRST1
TRST2
PICKUP
PU_ST1
PU_ST2
ANSI06000278 V2 EN-US
Figure 339: ROV2PTOV (59N) function block
9.3.4 Signals
PID-3531-INPUTSIGNALS v5
Table 347: ROV2PTOV (59N) Input signals
Name Type Default Description
V3P GROUP
SIGNAL
- Three phase voltages
BLOCK BOOLEAN 0 Block of function
BLKTR1 BOOLEAN 0 Block of trip signal, step 1
BLK1 BOOLEAN 0 Block of step 1
BLKTR2 BOOLEAN 0 Block of trip signal, step 2
BLK2 BOOLEAN 0 Block of step 2
PID-3531-OUTPUTSIGNALS v5
Table 348: ROV2PTOV (59N) Output signals
Name Type Description
TRIP BOOLEAN Trip
TRST1 BOOLEAN Common trip signal from step1
TRST2 BOOLEAN Common trip signal from step2
PICKUP BOOLEAN Common pickup signal
PU_ST1 BOOLEAN Common pickup signal from step1
PU_ST2 BOOLEAN Common pickup signal from step2
Section 9 1MRK 502 066-UUS B
Voltage protection
626
Technical manual