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Using t he Control Panel
9-11
EATON Powerware
®
9390 UPS (100–160 kVA) Installation and Operation Manual S 164201604 Rev B powerware.com
9.2.5 KW Demand Log
Press the METERS pushbutton on the main menu bar to display the Unit Meter screens.
Scroll through the meter screens using the
or pushbuttons on the menu bar until the
KW Demand Log Summary screen is displayed.
NOTE
The KW Demand Log is available only when the mini-CSB is installed.
The KW d emand log collects information on events where the unit load exceeds a
user-defined KW limit within a user-defined time interval. The user can choose a time
period up to 9999 minutes and a load limit up to 9999 KW. If the limit is exceeded within a
given time period a log event is created. The KW Demand Log Summary screen displays the
number of total times the limit has been exceeded since the last log reset, the date of the
last log reset, the maximum KW reading, and the total time over the limit. It also displays
the average KW over the limit and an estimated number of KWH used over the limit. Both
of these values are calculated using the difference between the actual measurement
reading and the user-defined limit level. For example, during a 60 -minute interval if the
limit is set at 10 KW and the measurement is a constant 15 KW for the entire period, the
averageKWoverwouldbe5KWandthetotalKWHusedoverthelimitwouldbe5KWH.
Figure 9-13 shows the KW Demand Log Summary screen.
KW DEMAND LOG SUMMARY
LOG
LAST LOG RESET
AVERAGE KW OVER LIMIT
TOTAL TIME OVER LIMIT
MAXIMUM READING (KW)
12
07/30/2005
** MINUTES
NUMBER OF TIMES OVER LIMIT
TOTA L KWH USED OVER LIMIT
*** . ** KW
*** . ** KW
*** . ** KWH
SETUP
Figure 9-13. KW Demand Log Summary Screen