Hitachi Relion REL670 Product Manual page 100

Line distance protection REL670
Version 2.2
Table 67. Overcurrent protection with binary release BRPTOC , continued
Function
Critical impulse time
Table 68. 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
set
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 208 and 209
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
0
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
100
Range or value
DFT:
10 ms typically at 0 to 2 x I
Peak to peak:
5 ms typically at 0 to 2 x I
Peak:
1 ms typically at 0 to 2 x I
GUID-7EA9731A-8D56-4689-9072-D72D9CDFD795 v8
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
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 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
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Accuracy
-
set
set
set
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 208 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 Q
209
Hitachi Energy