ABB RELION 670 Series Product Manual page 82

Transformer protection RET670 2.1 IEC
Table 56. Breaker failure protection CCRBRF
Function
Operate phase current
Reset ratio, phase current
Operate residual current
Reset ratio, residual current
Phase current level for blocking of contact
function
Reset ratio
Operate time for current detection
Reset time for current detection
Time delay for re-trip at 0 to 2 x I
Time delay for back-up trip at 0 to 2 x I
Time delay for back-up trip at multi-phase
start at 0 to 2 x I
set
Additional time delay for a second back-up trip
at 0 to 2 x I
set
Time delay for alarm for faulty circuit breaker
Table 57. Pole discordance protection CCPDSC
Function
Operate current
Independent time delay
between trip condition and
trip signal
Table 58. 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 to 0.5 x S
r
82
Range or value
(5-200)% of
> 95%
(2-200)% of
> 95%
(5-200)% of
> 95%
10 ms typically
15 ms maximum
(0.000-60.000) s
set
(0.000-60.000) s
set
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
Range or value
IBase
(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
k = 0.000
and
M12353-1 v13
Accuracy
lBase
±1.0% of I
±1.0% of I at I > I
-
lBase
±1.0% of I
±1.0% of I at I > I
-
lBase
±1.0% of I
±1.0% of I at I > I
-
-
-
±0.2% or ±15 ms whichever is greater
±0.2% or ±15 ms whichever is greater
±0.2% or ±20 ms whichever is greater
±0.2% or ±20 ms whichever is greater
±0.2% or ±15 ms whichever is greater
M13279-1 v9
Accuracy
±1.0% of I
r
±0.2% or ± 25 ms whichever is greater
SEMOD175152-2 v10
SBase
1MRK 504 155-BEN F
at I £ I
r r
r
at I £ I
r r
r
at I £ I
r r
r
Accuracy
±1.0% of S at S ≤ S
r r
±1.0% of S at S > S
r
where
= × ×
S 1.732 U I
r r r
±2.0 degrees
±0.2% or ±40 ms whichever is greater
ABB