Owner’s Manual for Power Zone Connectivity Server
25
Installation and Operation
I
2
T Enabled
The i
2
t algorithm monitors the maximum output current
on all legs of the alternator and integrates the square of
the maximum current with respect to time. When this
feature is enabled and the integral reaches the
normalized value of “90”, a shutdown fault is triggered.
When this feature is not enabled, the current is not
monitored in this way.
Examples:
•
3 x rated current for 10 seconds is 3
2
x 10 = 90
•
1.1 x rated current for 74 seconds is 1.1
2
x 74 = 90
Figure 3-50. Thermal Protection Setup
Ground Fault Indication (GFI)
See
Figure 3-45
. The GFI feature is used to indicate
when there is a higher than desired combination of
ground current and neutral current. The default threshold
is the rated current of the generator with a one second
delay to trigger indication. This screen allows the
operator to enable/disable GFI, change the threshold,
change the hysteresis for the threshold, and change the
delay time for triggering the indication. Refer to “PRGM
(GFI) GROUND FAULT INDICATION POWERZONE”
(part no. 10000044416) for setup instructions.
Figure 3-51. Ground Fault Indication (GFI)
Calendars
See
Figure 3-52
. The Calendars screen displays date
and time related functions.
Figure 3-52. Calendars
Set Date/Time
This is covered in
Date/Time
.
Exercise Setup
See
Figure 3-53
. This screen is used to setup Single
generator exercise. The command calendar can be used
to set up a generator exercise command. Select how
often the exercise should run (weekly or biweekly) and
which day of the week. Multiple days can be selected.
Select the start week of Bi-Weekly (this week or next
week). Set Time of the Day and Duration in 24 hour
format.
Figure 3-53. Exercise Setup
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