M13317-2 v16
Table 77. Residual overvoltage protection, two steps ROV2PTOV
Function
Range or value
Accuracy
Operate voltage, step 1 - step 2
(1.0-200.0)% of
UBase
± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U > U
r
Absolute hysteresis
(0.0–50.0)% of
UBase
± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U > U
r
Inverse time characteristics for low and
high step, see table
-
Definite time delay low step (step 1) at 0
to 1.2 x U
set
(0.00–6000.00) s
± 0.2% or ± 45 ms whichever is greater
Definite time delay high step (step 2) at 0
to 1.2 x U
set
(0.000–60.000) s
± 0.2% or ± 45 ms whichever is greater
Minimum operate time
(0.000-60.000) s
± 0.2% or ± 45 ms whichever is greater
Operate time, start at 0 to 2 x U
set
Min. = 15 ms
Max. = 30 ms
-
Reset time, start at 2 x U
set
to 0
Min. = 15 ms
Max. = 30 ms
-
Operate time, start at 0 to 1.2 x U
set
Min. = 20 ms
Max. = 35 ms
-
Reset time, start at 1.2 x U
set
to 0
Min. = 5 ms
Max. = 25 ms
-
Critical impulse time
10 ms typically at 0 to 2 x U
set
-
Impulse margin time
15 ms typically
-
M13338-2 v12
Table 78. Overexcitation protection OEXPVPH
Function
Range or value
Accuracy
Operate value, start
(100–180)% of (
UBase
/f
rated
)
±0.5% of U
Operate value, alarm
(50–120)% of start level
±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Operate value, high level
(100–200)% of (
UBase
/f
rated
)
±0.5% of U
Curve type
IEEE or customer defined
2
(0.18 )
:
(
1)
k
IEEE t
M
×
=
-
EQUATION1319 V1 EN-US
(Equation 2)
where M = (E/f)/(Ur/fr)
±5.0 % or ±45 ms, whichever is greater
Minimum time delay for inverse
function
(0.000–60.000) s
±1.0% or ±45 ms, whichever is greater
Maximum time delay for inverse
function
(0.00–9000.00) s
±1.0% or ±45 ms, whichever is greater
Alarm time delay
(0.00–9000.00)
±1.0% or ±45 ms, whichever is greater
Line differential protection RED670
1MRK 505 379-BEN R
Version 2.2
114
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