GE Entellisys 4.0, Application Manual

Page: 29 / 43

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Figure 12.2
Preventative Maintenance Display
Percent Mechanical Life
Entellisys updates the fraction of mechanical life used
on each EntelliGuard circuit breaker every time the
breaker transitions from closed to open. It is calculated
by dividing the total number of operations by the
number of rated operations, as listed in Table 12.3.
Last Breaker Operation
Entellisys records the date and time of the last
operation, either closed to open or open to closed,
for each EntelliGuard circuit breaker.
Adjusting the Preventative Maintenance Values
All the values described above, except for accumu-
lated service hours and percentage total load life
(which are purely calculated values) can be adjusted.
Select Preventative Maintenance from the HMI User
Settings menu to display the window shown in Figure
12.2. The setup tab on this screen displays the current
values and lets you change the selectable fields.
When a component of the Entellisys system is
commissioned, replaced, or moved, adjustments
must be made to all these values.
You can set thresholds on certain values to generate
an alarm and send an email notification when the
threshold is exceeded. These are set on the Alarms
Setup screen, which is displayed by pressing the
Alarms Setup button.
Notification Thresholds
Enter values in these boxes to set threshold alarms
for each of the operations counters. When the
count equals the threshold value, a notification
email is sent according to the configuration on the
Alarms Setup screen.
Hours of Operation
Entellisys records the date and time that a circuit
breaker was initially energized and displays the
number of hours that have elapsed since then.
These hours are a purely calculated value and
are as accurate as the current system time. The
equation used to calculate this is:
T
RunHours =
T
CurrentTime –
T
initialEnergizing
Alerts
Alerts are automatically activated based on
preventative maintenance data. The three different
types of alerts, described below, can be modified
though the alarm functions. Refer to Section 9 for
more on alarms.
Accumulated Service Hours Alerts
Entellisys keeps track of the date and time each
EntelliGuard breaker was initially energized. This
value is entered into the HMI on the PM settings
screen. On every anniversary of the energizing
date, an alarm is activated and an event is
entered in the event log.
Load Life Operation Alerts
Entellisys activates a user-defined alarm and logs
an event when any EntelliGuard circuit breaker has
reached 50%, 75%, or 90% of its load life operations.
Mechanical Life Operation Alerts
Entellisys activates a user-defined alarm and logs
an event when any EntelliGuard circuit breaker
has reached 12.5%, 25%, 37.5%, 50%, 62.5%,
75%, 87.5%, or 100% of its mechanical life.
Section 12. EntelliGuard Preventative Maintenance
Table 12.3
Number of Rated Operations for Each Frame Size
Frame Size, A Mechanical endurance
800 9700
1600 3200
2000 3200
3200 1100
4000 1100
5000 1100