ABB Relion 670 Series Product Manual page 85

Generator protection REG670
Version 2.2
Table 61. Pole discordance protection CCPDSC
Function
Operate current
Independent time delay between trip
condition and trip signal
Table 62. Directional underpower protection GUPPDUP
Function
Power level
for Step 1 and Step 2
Characteristic angle
for Step 1 and Step 2
Independent time delay to operate for
Step 1 and Step 2 at 2 x S
r
k = 0.000
Table 63. Directional overpower protection GOPPDOP
Function
Power level
for Step 1 and Step 2
Characteristic angle
for Step 1 and Step 2
Operate time, start at 0.5 x S
k = 0.000
Reset time, start at 2 x S to 0.5 x S
r
k = 0.000
Independent time delay to operate for
Step 1 and Step 2 at 0.5 x S
k = 0.000
*) To achieve this accuracy for reverse power protection it is also recommended to apply settings
settings will help to minimize the overall measurement error ensuring the best accuracy for this application.
Hitachi Power Grids
Range or value
(0–100)% of
(0.000-60.000) s
Range or value
(0.0–500.0)% of
(-180.0–180.0) degrees
(0.01-6000.00) s
to 0.5 x S and
r
Range or value
(0.0–500.0)% of SBase
When measuring
transformer inputs are
used, the following
accuracy can be obtained
for low pickup settings
which are typical for
reverse power protection
application:
(-180.0–180.0) degrees
to 2 x S and Min. =10 ms
r r
Max. = 25 ms
and Min. = 35 ms
r
Max. = 55 ms
(0.01-6000.00) s
to 2 x S and
r r
© Copyright 2017 Hitachi Power Grids. All rights reserved
M13279-1 v10
Accuracy
IBase
±1.0% of I
±0.2% or ± 30 ms whichever is greater
SEMOD175152-2 v11
Accuracy
SBase ±1.0% of S
±1.0% of S at S > S
where
=
S 1.732
r
±2.0 degrees
±0.2% or ±40 ms whichever is greater
SEMOD175159-2 v9
Accuracy
±1.0% of S
±1.0% of S at S > S
Start value P=0.5% of S
Pickup accuracy of ±0.20% of S
Start value P=0.2% of S
Pickup accuracy of ±0.15% of S
S
where
r
±2.0 degrees
±0.2% or ±40 ms whichever is greater
1MRK 502 074-BEN M
r
at S ≤ S
r r
r
× ×
U I
r r
at S ≤ S
r r
r
r
*)
r
r
*)
r
= × ×
1.732 U I
r r
k = 0.990 and Mode = PosSeq . These
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