ABB REL670 - Page 90

Table 74. General current and voltage protection CVGAPC , continued
Function Range or value Accuracy
Start undervoltage, step 1 - 2 (2.0 - 150.0)% of UBase ±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Independent time delay, overvoltage at 0.8
x U
set
to 1.2 x U
set
, step 1 - 2
(0.00 - 6000.00) s ±0.2% or ±35 ms whichever is greater
Independent time delay, undervoltage at
1.2 x U
set
to 0.8 x U
set
, step 1 - 2
(0.00 - 6000.00) s ±0.2% or ±35 ms whichever is greater
Overvoltage:
Start time at 0.8 x U
set
to 1.2 x U
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 1.2 x U
set
to 0.8 x U
set
Min. = 15 ms
Max. = 30 ms
-
Undervoltage:
Start time at 1.2 x U
set
to 0.8 x U
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 1.2 x U
set
to 0.8 x U
set
Min. = 15 ms
Max. = 30 ms
-
Overvoltage:
Inverse time characteristics, see table 188 4 curve types See table 188
Undervoltage:
Inverse time characteristics, see table 189 3 curve types See table 189
High and low voltage limit, voltage
dependent operation, step 1 - 2
(1.0 - 200.0)% of UBase ±1.0% of U
r
at U ≤ U
r
±1.0% of U at U > U
r
Directional function Settable: NonDir, forward and reverse -
Relay characteristic angle (-180 to +180) degrees ±2.0 degrees
Relay operate angle (1 to 90) degrees ±2.0 degrees
Reset ratio, overcurrent > 95% -
Reset ratio, undercurrent < 105% -
Reset ratio, overvoltage > 95% -
Reset ratio, undervoltage < 105% -
Overcurrent:
Critical impulse time 10 ms typically at 0 to 2 x I
set
-
Impulse margin time 15 ms typically -
Undercurrent:
Critical impulse time 10 ms typically at 2 x I
set
to 0 -
Impulse margin time 15 ms typically -
Overvoltage:
Critical impulse time 10 ms typically at 0.8 x U
set
to 1.2 x
U
set
-
Impulse margin time 15 ms typically -
1MRK 506 372-BEN -
Line distance protection REL670 2.2
Product version: 2.2
90 ABB