ABB REL670 Product Manual page 82

Line distance protection REL670 2.2
Product version: 2.2
Table 63. Voltage-restrained time overcurrent protection VRPVOC
Function
Start overcurrent
Reset ratio, overcurrent
Operate time, start overcurrent at 0 to 2 x I
Reset time, start overcurrent at 2 x I
Operate time, start overcurrent at 0 to 10 x I
Reset time, start overcurrent at 10 x I
Independent time delay to operate at 0 to 2 x
I
set
Inverse time characteristics,
see tables 180 and 181
Minimum operate time for inverse time
characteristics
High voltage limit, voltage dependent
operation
Start undervoltage
Reset ratio, undervoltage
Operate time start undervoltage at 2 x U
Reset time start undervoltage at 0 to 2 x U
Independent time delay to operate,
undervoltage at 2 x U to 0
set
Internal low voltage blocking
Overcurrent:
Critical impulse time
Impulse margin time
Undervoltage:
Critical impulse time
Impulse margin time
82
Range or value
(2.0 - 5000.0)% of IBase
> 95%
Min. = 15 ms
set
Max. = 30 ms
to 0 Min. = 15 ms
set
Max. = 30 ms
Min. = 5 ms
set
Max. = 20 ms
to 0 Min. = 20 ms
set
Max. = 35 ms
(0.00 - 6000.00) s
13 curve types
(0.00 - 60.00) s
(30.0 - 100.0)% of UBase
(2.0 - 100.0)% of UBase
< 105%
to 0 Min. = 15 ms
set
Max. = 30 ms
Min. = 15 ms
set
Max. = 30 ms
(0.00 - 6000.00) s
(0.0 - 5.0)% of UBase
10 ms typically at 0 to 2 x I
15 ms typically
10ms typically at 2 x U
15 ms typically
Accuracy
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
-
-
-
-
-
±0.2% or ±35 ms whichever is greater
See tables 180 and
±0.2% or ±35 ms whichever is greater
±1.0% of U
r
±0.5% of U
r
-
-
-
±0.2% or ±35 ms whichever is greater
±0.25% of U
r
-
set
-
to 0
set
1MRK 506 372-BEN -
181
ABB