ABB Relion REL650 Series Product Manual page 69

Line distance protection REL650
Version 2.2
Voltage protection
Table 48. Two step undervoltage protection UV2PTUV
Function
Operate voltage, low and high step
Reset ratio
Inverse time characteristics for low and
high step, see table 164
Definite time delay, step 1 at 1.2 x U
0
Definite time delay, step 2 at 1.2 x U
0
Minimum operate time, inverse
characteristics
Operate time, start function
Reset time, start function
Operate time, start at 2 x U
set
Reset time, start at 0 to 2 x U
Operate time, start at 1.2 x U
Reset time, start at 0 to 1.2 x U
Critical impulse time
Impulse margin time
Hitachi Power Grids
Range or value
(1.0–100.0)% of UBase
<102%
-
to (0.00-6000.00) s
set
to (0.000-60.000) s
set
(0.000–60.000) s
30 ms typically at 1.2 x U
0.5 x U
set
40 ms typically at 0.5 x U
1.2 x U
set
to 0 Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
set
Max. = 30 ms
to 0 Min. = 5 ms
set
Max. = 25 ms
Min. = 15 ms
set
Max. = 35 ms
5 ms typically at 1.2 x U
15 ms typically
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M13290-1 v16
Accuracy
±0.5% of U
r
-
See table 164
±0.2% or ±40ms whichever is greater
±0.2% or ±40ms whichever is greater
± 0.5% ± 25 ms
to -
set
to -
set
-
-
-
-
to 0 -
set
-
1MRK 506 384-BEN H
69