3.5 Circuit breaker condition
monitoring
3 Supporting functions Technical description
122
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At alarm level 2, 6 kA, the corresponding number of operations
is calculated according
Equation 3.5-4
C
C
AlarmMax
3
313
945
21
LL
Thus Alarm2 counters for phases L1 and L2 are decremented
by 3. In phase L1 the currents is less than the alarm limit
current 6 kA. For such currents the decrement is one.
1
3
L
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