GE Industrial Solutions Entellisys System User Manual User Manual
Page 171
Viewing and understanding PM data
171
12
If the current flowing through the circuit breaker at the time of transition exceeds the maximum
current threshold (Table 12-2), exactly 45% of the circuit breaker life is added to the total load
life used value.
Table 12-1 K values for various frame sizes
Frame Size
K
frame
800
2800
1600
1200
2000
1000
3200
600
4000
500
5000
400
Table 12-2 Maximum Current Thresholds for various frame ratings, expressed in multiples of CT rating
Frame Size
Max current
threshold
800
15
1600
15
2000
15
3200
13
4000
9
5000
7
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