M12350-1 v13
Table 67. Stub protection STBPTOC
Function
Range or value
Accuracy
Operating current
(5-2500)% of
IBase
± 1.0% of I
r
at I ≤ I
r
± 1.0% of I at I > I
r
Reset ratio
>95% at (50- 2500)% of
IBase
Independenttime delay at 0 to 2 x I
set
(0.000-60.000) s
±0.2% or ±30 ms whichever is greater
Operate time, start at 0 to 2 x I
set
Min.= 10 ms
Max.= 25 ms
Reset time, start at 2 x I
set
to 0
Min.= 10 ms
Max.= 25 ms
Operate time, start at 0 to 5 x I
set
Min.= 5 ms
Max.= 20 ms
Reset time, start at 5 x I
set
to 0
Min.= 15 ms
Max.= 30 ms
Critical impulse time
10 ms typically at 0 to 2 x I
set
Impulse margin time
15 ms typically
M13279-1 v10
Table 68. Pole discordance protection CCPDSC
Function
Range or value
Accuracy
Operate current
(0–100)% of
IBase
±1.0% of I
r
Independent time delay between trip
condition and trip signal
(0.000-60.000) s
±0.2% or ± 30 ms whichever is greater
SEMOD175152-2 v11
Table 69. Directional underpower protection GUPPDUP
Function
Range or value
Accuracy
Power level
for Step 1 and Step 2
(0.0–500.0)% of
SBase
±1.0% of S
r
at S ≤ S
r
±1.0% of S at S > S
r
where
1.732
r
r
r
S
U I
=
×
×
Characteristic angle
for Step 1 and Step 2
(-180.0–180.0) degrees
±2.0 degrees
Independent time delay to operate for Step 1
and Step 2 at 2 x S
r
to 0.5 x S
r
and
k
=
0.000
(0.01-6000.00) s
±0.2% or ±40 ms whichever is greater
Line differential protection RED670
1MRK 505 379-BEN R
Version 2.2
Hitachi Energy
107
© 2017 - 2022 Hitachi Energy. All rights reserved
Содержание Relion 670 Series
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