Powerware 9390 UPS 100160 kVA - Manual (Page 77)

USING THE CONTROL PANEL
EATON Powerware ® 9390 UPS (20–80 kVA) Installation and Operation Manual S 164201603 Rev 2 www.powerware.com 8-11
8.2.5 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.
The kW demand log collects information on events where the unit load exceeds a
user‐defined kW limit within a user‐defined time interval. 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 average kW over would be 5 kW and the total kWH
used over the limit would be 5 kWH. Figure 8‐13 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
TOTAL KWH USED OVER LIMIT
*** . ** KW
*** . ** KW
*** . ** KWH
SETUP
Figure 8‐13. kW Demand Log Summary Screen