Negative Sequence Overvoltage Protection Lcnsptov; Zero Sequence Overvoltage Protection Lczsptov - ABB RED670 Product Manual

Line differential protection RED670 2.1 IEC
Product version: 2.1
Table 87. Negative sequence overvoltage protection LCNSPTOV
Function
Operate value, negative sequence overvoltage
Reset ratio, negative sequence overvoltage
Operate time, start at 0 to 2 x U
Reset time, start at 2 to 0 x U
Critical impulse time, negative sequence overvoltage
Impulse margin time, negative sequence overvoltage
Independent time delay to operate at 0 to 1.2 x U
Table 88. Zero sequence overvoltage protection LCZSPTOV
Function
Operate value, zero sequence overvoltage
Reset ratio, zero sequence overvoltage
Operate time, start at 0 to 2 x U
Reset time, start at 2 to 0 x U
Critical impulse time, zero sequence overvoltage
Impulse margin time, zero sequence overvoltage
Independent time delay to operate at 0 to 1.2 x U
ABB
set
set
set
set
set
set
Range or value
(1-200)% of UBase
>95% at (10–200)% of UBase
Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
Max. = 30 ms
10 ms typically at 0 to 2 x U
set
15 ms typically
(0.000-120.000) s
Range or value
(1-200)% of UBase
>95% at (10–200)% of UBase
Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
Max. = 30 ms
10 ms typically at 0 to 2 x U
15 ms typically
(0.000-120.000) s
1MRK 505 346-BEN -
Accuracy
±0.5% of U at U≤U
r
±0.5% of U at U>U
-
-
-
-
-
±0.2% or ±40 ms whichever is
greater
Accuracy
±0.5% of U at U ≤ U
r
±0.5% of U at U > U
-
-
-
-
set
-
±0.2% or ±40 ms whichever is
greater
r
r
r
r
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