SEMOD175152-2 v11
Table 67. 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
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
SEMOD175159-2 v9
Table 68. Directional overpower protection GOPPDOP
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
Characteristic angle
for Step 1 and Step 2
(-180.0–180.0) degrees ±2.0 degrees
Operate time, start at 0.5 x S
r
to 2 x S
r
and
k
=
0.000
Min. =10 ms
Max. = 25 ms
Reset time, start at 2 x S
r
to 0.5 x S
r
and
k
=
0.000
Min. = 35 ms
Max. = 55 ms
Independent time delay to operate for
Step 1 and Step 2 at 0.5 x S
r
to 2 x S
r
and
k
=
0.000
(0.01-6000.00) s ±0.2% or ±40 ms whichever is greater
SEMOD175200-2 v8
Table 69. Broken conductor check BRCPTOC
Function Range or value Accuracy
Minimum phase current for operation (5–100)% of
IBase
±1.0% of I
r
Unbalance current operation (50–90)% of maximum current ±1.0% of I
r
Independent operate time delay (0.000-60.000) s ±0.2% or ±45 ms whichever is greater
Independent reset time delay (0.010-60.000) s ±0.2% or ±30 ms whichever is greater
Start time at current change from I
r
to 0 Min. = 25 ms
Max. = 35 ms
-
Reset time at current change from 0 to
I
r
Min. = 5 ms
Max. = 20 ms
-
Line differential protection RED670
1MRK 505 379-BEN N
102 Hitachi Power Grids
© Copyright 2017 Hitachi Power Grids. All rights reserved
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