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M12353-1 v13
Table 56. Breaker failure protection CCRBRF
Function
Range or value
Accuracy
Operate phase current
(5-200)% of
lBase
±1.0% of I
r
at I
£
I
r
±1.0% of I at I > I
r
Reset ratio, phase current
> 95%
-
Operate residual current
(2-200)% of
lBase
±1.0% of I
r
at I
£
I
r
±1.0% of I at I > I
r
Reset ratio, residual current
> 95%
-
Phase current level for blocking of contact
function
(5-200)% of
lBase
±1.0% of I
r
at I
£
I
r
±1.0% of I at I > I
r
Reset ratio
> 95%
-
Operate time for current detection
10 ms typically
-
Reset time for current detection
15 ms maximum
-
Time delay for re-trip at 0 to 2 x I
set
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
Time delay for back-up trip at 0 to 2 x I
set
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
Time delay for back-up trip at multi-phase
start at 0 to 2 x I
set
(0.000-60.000) s
±0.2% or ±20 ms whichever is greater
Additional time delay for a second back-up trip
at 0 to 2 x I
set
(0.000-60.000) s
±0.2% or ±20 ms whichever is greater
Time delay for alarm for faulty circuit breaker
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
M13279-1 v9
Table 57. 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 ± 25 ms whichever is greater
SEMOD175152-2 v10
Table 58. 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 to 0.5 x S
r
and
k=0.000
(0.01-6000.00) s
±0.2% or ±40 ms whichever is greater
1MRK 504 155-BEN F
Transformer protection RET670 2.1 IEC
82
ABB
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