ABB Relion 650 Series Technical Manual page 252

Section 7
Voltage protection
Function
Definite time delay, step 1
Definite time delays, step 2
Minimum operate time, Inverse
characteristics
Operate time, pickup function
Reset time, pickup function
Critical impulse time
Impulse margin time
7.3 Two step residual overvoltage protection ROV2PTOV
(59N)
7.3.1 Identification
Function description
Two step residual overvoltage
protection
7.3.2 Functionality
Residual voltages may occur in the power system during ground faults.
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, where step 1 can be set as inverse or definite time
delayed. Step 2 is always definite time delayed.
7.3.3 Function block
ROV2PTOV (59N)
V3P*
BLOCK
BLK1
BLK2
ANSI09000273 V1 EN-US
Figure 126: ROV2PTOV (59N) function block
246
TRIP
TRST1
TRST2
PICKUP
PU_ST1
PU_ST2
ANSI09000273_1_en.vsd
© Copyright 2011 ABB Power Grids. All rights reserved
Range or value
(0.00 - 6000.00) s
(0.000-60.000) s
(0.000-60.000) s
30 ms typically at 0 to 2 x V
40 ms typically at 2 to 0 x V
10 ms typically at 0 to 2 x V
15 ms typically
IEC 61850 IEC 60617
identification identification
ROV2PTOV
3U0>
IEC10000168 V1 EN-US
Accuracy
± 0.5% ± 25 ms
± 0.5% ± 25 ms
± 0.5% ± 25 ms
-
set
-
set
-
set
-
ANSI/IEEE C37.2
device number
59N
Line distance protection REL650
1MRK 506 326-UUS B
IP14546-1 v4
SEMOD54295-2 v4
M13808-3 v8
M13812-3 v5
Technical manual