ABB Relion 670 Series Product Manual page 92

Generator protection REG670
Version 2.2
Table 71. Two step overvoltage protection OV2PTOV
Function
Operate voltage, step 1 and 2
Absolute hysteresis
Inverse time characteristics for steps 1
and 2, see table 190
Definite time delay, low step (step 1) at
0 to 1.2 x U
set
Definite time delay, high step (step 2) at
0 to 1.2 x U
set
Minimum operate time, Inverse
characteristics
Operate time, start at 0 to 2 x U
Reset time, start at 2 x U
set
Operate time, start at 0 to 1.2 x U
Reset time, start at 1.2 x U
set
Critical impulse time
Impulse margin time
92
Range or value
(1.0-200.0)% of
(0.0–50.0)% of
-
(0.00 - 6000.00) s
(0.000-60.000) s
(0.000-60.000) s
Min. = 15 ms
set
Max. = 30 ms
to 0 Min. = 15 ms
Max. = 30 ms
Min. = 20 ms
set
Max. = 35 ms
to 0 Min. = 5 ms
Max. = 25 ms
10 ms typically at 0 to 2 x
U
set
15 ms typically
© Copyright 2017 Hitachi Power Grids. All rights reserved
M13304-1 v15
Accuracy
UBase
±0.5% of U
r
±0.5% of U at U > U
UBase
±0.5% of U
r
±0.5% of U at U > U
See table 190
±0.2% or ±45 ms whichever is greater
±0.2% or ±45 ms whichever is greater
±0.2% or ±45 ms whichever is greater
-
-
-
-
-
-
1MRK 502 074-BEN M
at U ≤ U
r
r
at U ≤ U
r
r
Hitachi Power Grids