Circuit-Breaker Wear Monitoring
Setting Values
Threshold value
ΣI
x
-method stage
0 to 10 000 000 Increments of 1
2P-method stage 0 to 10 000 000 Increments of 1
I
2
t-method stage
0.00 I/Ir*s to 21 400 000.00 I/Ir*s Increments of 0.01
CB opening time 0.001 s to 0.500 s Increments of 0.001 s
CB break time 0.001 s to 0.600 s Increments of 0.001 s
CB make time 0.001 s to 0.600 s Increments of 0.001 s
Exponent for the ΣI
x
method
1.0 to 3.0 Increments of 0.1
Switching cycles at I
rated
100 to 1 000 000 Increments of 1
Rated short-circuit breaking current I
sc
10 to 100 000 Increments of 1
Switching cycles at I
sc
1 to 1000 Increments of 1
Level of warning 1 1 % to 100 % Increments of 1 %
Level of warning 2 1 % to 100 % Increments of 1 %
Operating
current threshold
1 A @ 100 Irated 0.030 A to 35.000 A Increments of 0.001 A
5 A @ 100 Irated 0.15 A to 175.00 A Increments of 0.01 A
Delay correction time -0.050 s to 0.050 s Increments of 0.001 s
Tolerances
Tolerance of the measured value make time
± 2 ms
11.39
Technical Data
11.39 Circuit-Breaker Wear Monitoring
SIPROTEC 5, Low-Impedance Busbar Protection, Manual 993
C53000-G5040-C019-C, Edition 04.2021
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