GE Industrial Solutions Entellisys System User Manual - 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