ABB REL670 - Page 97

Direct transfer trip
Table 87. Low active power and power factor protection LAPPGAPC
Function Range or value Accuracy
Operate value, low active power (2.0-100.0)% of SBase ±1.0% of S
r
Reset ratio, low active power <105% -
Operate value, low power factor 0.00-1.00 ±0.02
Independent time delay to operate for low
active power at 1.2 x P
set
to 0.8 x P
set
(0.000-60.000) s ±0.2% or ±40 ms whichever is greater
Independent time delay to operate for low
power factor at 1.2 x PF
set
to 0.8 x PF
set
(0.000-60.000) s ±0.2% or ±40 ms whichever is greater
Critical impulse time, low active power 10 ms typically at 1.2 x P
set
to 0.8 x
P
set
-
Impulse margin time, low active power 10 ms typically -
Table 88. Compensated over- and undervoltage protection COUVGAPC
Function
Range or value Accuracy
Operate value, undervoltage (1-100)% of UBase ±0,5% of U
r
Absolute hysteresis (0.00–50.0)% of UBase ±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Critical impulse time, undervoltage 10 ms typically at 1.2 x U
set
to 0.8 x
U
set
-
Impulse margin time, undervoltage 15 ms typically -
Operate value, overvoltage (1-200)% of UBase ±0.5% of U
r
at U≤U
r
± 0.5% of U at U>U
r
Critical impulse time, overvoltage 10 ms typically at 0.8 x U
set
to 1.2 x
U
set
-
Impulse margin time, overvoltage 15 ms typically -
Independent time delay for
undervoltage functionality at 1.2 x U
set
to 0.8 x U
set
(0.000-60.000) s ±0.2% or ±40 ms whichever is greater
Independent time delay for overvoltage
functionality at 0.8 x U
set
to 1.2 x U
set
(0.000-60.000) s ±0.2% or ±40 ms whichever is greater
Table 89. Sudden change in current variation SCCVPTOC
Function
Range or value Accuracy
Operate value, overcurrent (5-100)% of IBase ±2.0% of I
r
Hold time for operate signal at 0 to 2 x Iset (0.000-60.000) s ±0.2% or ±15 ms whichever is
greater
1MRK 506 372-BEN -
Line distance protection REL670 2.2
Product version: 2.2
ABB 97