M13304-1 v15
Table 49. Two step overvoltage protection OV2PTOV
Function
Range or value
Accuracy
Operate voltage, step 1 and 2
(1.0-200.0)% of
UBase
±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Reset ratio
>98%
-
Inverse time characteristics for steps 1 and
2, see table
-
Definite time delay, low step (step 1) at 0 to
1.2 x U
set
(0.00 - 6000.00) s
±0.5% ±25
Definite time delay, high step (step 2) at 0
to 1.2 x U
set
(0.000-60.000) s
±0.5% ±25 ms
Minimum operate time, Inverse
characteristics
(0.000-60.000) s
±0.5% ±25 ms
Operate time, start function
25 ms typically at 0 to 2 x U
set
30 ms typically at 0 to 2 x U
set
-
Reset time, start function
25 ms typically at 0 to 2 x U
set
40 ms typically at 2 x U
set
to 0
-
Critical impulse time
10 ms typically at 0 to 2 x U
set
-
Impulse margin time
15 ms typically
-
M13317-2 v16
Table 50. Residual overvoltage protection, two steps ROV2PTOV
Function
Range or value
Accuracy
Operate voltage, step 1
(1.0-200.0)% of
UBase
± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U > U
r
Operate voltage, step 2
(1–100)% of
UBase
± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U > U
r
Reset ratio
> 98%
-
Inverse time characteristics for low and
high step, see table
-
Definite time setting, step 1
(0.00–6000.00) s
± 0.5% ± 25 ms
Definite time setting, step 2
(0.000–60.000) s
± 0.5% ± 25 ms
Minimum operate time for step 1 inverse
characteristic
(0.000-60.000) s
± 0.2% ± 25 ms
Critical impulse time
10 ms typically at 0 to 1.2 x U
set
-
Impulse margin time
15 ms typically
-
Line distance protection REL650
1MRK 506 384-BEN H
Version 2.2
70
Hitachi Power Grids
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