GE Industrial Solutions Entellisys System User Manual User Manual
Page 171
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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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