ABB Relion 670 Series Product Manual page 82

Bay control REC670
Version 2.2
Voltage protection
Table 54. Two step undervoltage protection UV2PTUV
Function
Operate voltage, low and high step
Absolute hysteresis
Internal blocking level, step 1 and step
2
Inverse time characteristics for step 1
and step 2, see table 179
Definite time delay, step 1 at 1.2 x U
to 0
Definite time delay, step 2 at 1.2 x U
to 0
Minimum operate time, inverse
characteristics
Operate time, start at 2 x U
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
82
Range or value
(1.0–100.0)% of
(0.0–50.0)% of
UBase
(1–50)% of
-
(0.00-6000.00) s
set
(0.000-60.000) s
set
(0.000–60.000) s
to 0 Min. = 15 ms
set
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 v15
Accuracy
UBase
±0.5% of U
r
UBase
±0.5% of U
r
±0.5% of U
r
See table 179
±0.2% or ±40ms whichever is greater
±0.2% or ±40ms whichever is greater
±0.5% or ±40ms whichever is greater
-
-
-
-
to 0 -
set
-
1MRK 511 404-BEN N
Hitachi Power Grids