Schweitzer Engineering Laboratories SEL-311C - Figure 8.5 Breaker Monitor Accumulates 25 Percent Wear

8.9
Date Code 20060320 Instruction Manual SEL-311C Relay
Breaker Monitor and Metering Functions
Breaker Monitor
Figure 8.5 Breaker Monitor Accumulates 25 Percent Wear
10,000
100%
10%
1000
2
3
4
5
6
7
8
9
100
2
3
4
5
6
7
8
9
10
2
3
4
5
6
7
8
9
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50
40
30
20
10
.5
Number of Close/Open Operations
kA Interrupted per Operation
25%