ABB Relion 650 Series Technical Manual page 245

1MRK 506 326-UUS B
Function
Definite time delays, step 2
Minimum operate time, inverse
characteristics
Operate time, pickup function
Reset time, pickup function
Critical impulse time
Impulse margin time
7.2 Two step overvoltage protection OV2PTOV (59)
7.2.1 Identification
Function description
Two step overvoltage protection
7.2.2 Functionality
Overvoltages may occur in the power system during abnormal conditions such as sudden power
loss, tap changer regulating failures, open line ends on long lines etc.
OV2PTOV (59) has two voltage steps, where step 1 can be set as inverse or definite time delayed.
Step 2 is always definite time delayed.
OV2PTOV (59) has an extremely high reset ratio to allow settings close to system service voltage.
7.2.3 Function block
V3P*
BLOCK
BLK1
BLK2
ANSI09000278 V1 EN-US
Figure 123: OV2PTOV function block (59)
Line distance protection REL650
Technical manual
OV2PTOV (59)
TRIP
TRST1
TRST2
PICKUP
PU_ST1
PU_ST1_A
PU_ST1_B
PU_ST1_C
PU_ST2
ANSI09000278-1-en.vsd
© Copyright 2011 ABB Power Grids. All rights reserved
Range or value
(0.000-60.000) s
(0.000–60.000) s
30 ms typically at 2 to 0.5 x V
40 ms typically at 0.5 to 2 x V
10 ms typically at 2 to 0 x V
15 ms typically
IEC 61850 IEC 60617
identification identification
OV2PTOV
2U>
V1 EN-US SYMBOL-C-2U-SMALLER-THAN
Accuracy
± 0.5% ±25 ms
± 0.5% ± 25 ms
-
set
-
set
-
set
-
GUID-089477DD-5BC6-4DB5-BC0A-523005A57CA0 v1
ANSI/IEEE C37.2
device number
59
Section 7
Voltage protection
M17002-1 v4
M13798-3 v7
M13803-3 v5
239