ABB REL670 Product Manual page 83

Line distance protection REL670 2.2
Product version: 2.2
Voltage protection
Table 64. 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 189
Definite time delay, step 1 at 1.2 x U
Definite time delay, step 2 at 1.2 x U
Minimum operate time, inverse
characteristics
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
ABB
Range or value
(1.0–100.0)% of
(0.0–50.0)% of
UBase
(1–50)% of
-
to 0 (0.00-6000.00) s
set
to 0 (0.000-60.000) s
set
(0.000–60.000) s
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
Accuracy
UBase
±0.5% of U
UBase ±0.5% of U
±0.5% of U
See table 189
±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 506 372-BEN -
r
r
r
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