GE GL317D Instruction Manual page 177

Electrical wear limits
Estimation
Diagram
08- 2016
Maintenance
Electrical wear limits
Electrical wear can be determined by means of the curve below. This curve corres-
ponds with the formula:
ΣNI
2 2
= 20,000 kA (*)
N = number of interruptions on value I.
Example: it is possible to perform 50 interruptions on a current of 20 kA.
(*) Normal guarantee. In certain special operation conditions, other values may be
guaranteed.
I (kA)
50
20
10
2
10
GE Information
20 30 50 100
Number of interruptions
500 1000 3000
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