6 percent mechanical life, 7 last circuit breaker operation – GE Industrial Solutions Entellisys System User Manual User Manual
Page 172
Preventive maintenance
172
12
12.1.6 Percent mechanical life
Entellisys calculates the percentage of mechanical life used on each EntelliGuard circuit
breaker. This percentage is updated every time an EntelliGuard circuit breaker transitions from
closed to open, and is calculated by dividing the total number of operations recorded by the
counter by the number of rated operations. (See Equation 12-2 and Table 12-3.)
Equation 12-2 Percentage of mechanical life calculation
12.1.7 Last circuit breaker operation
Entellisys maintains the date and time of the last operation for each EntelliGuard circuit breaker.
This is defined as any transition from closed to open or from open to closed.
Table 12-3 Number of rated operations for various frame sizes
Frame Size
Operations
Rated
800
12500
1600
4000
2000
4000
3200
1500
4000
1500
5000
1500
Rated
Total
Operations
Operations
/
Life
Mechanical
of
%
=
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