UPS OPERATING INSTRUCTIONS
Eaton 9395 UPS (450–825 kVA) Installation and Operation Manual S 164201725 Rev 4 www.eaton.com/powerquality
7-27
7.3.22 UPS and Critical Load Shutdown
To perform maintenance or service on the critical load, shut down power to the load:
1. Turn off all equipment that is being powered by the UPS.
2. Perform the LOAD OFF procedure in paragraph 7.3.24.
The input, output, battery, and bypass backfeed contactors open, and the power
module is turned off.
W A R N I N G
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.
3. If the UPS contains input breaker CB1, open the UPS input breaker CB1.
4. Open the UPS input and bypass feeder circuit breakers.
7.3.23 Charger Control
To turn the battery charger on:
1. Press the
CONTROLS pushbutton on the main menu bar. The System Status
screen is displayed.
2. On the System Status screen, select the CHARGER command.
3. Press the
CONTROLS pushbutton on the System Status menu bar. The Charger
Control Command screen is displayed.
4. On the Charger Control Command screen, select CHARGER ON.
5. Press the
SELECT pushbutton on the Charger Command menu bar.
To turn the battery charger off:
1. Press the
CONTROLS pushbutton on the main menu bar. The System Status
screen is displayed.
2. On the System Status screen, select the CHARGER command.
3. Press the
CONTROLS pushbutton on the System Status menu bar. The Charger
Control Command screen is displayed.
4. On the Charger Control Command screen, select
CHARGER OFF.
5. Press the SELECT pushbutton on the Charger Command menu bar.
7.3.24 Using the UPS LOAD OFF Pushbutton or Command
A UPS Load Off is initiated by the LOAD OFF pushbutton from the main menu bar, the
Load Off command on the UPS Control Command screen, or Load Off command on
the Bypass Control Command screen. The UPS
LOAD OFF controls the UPS output by
powering down the UPS and de‐energizing the critical load.
The UPS (including Bypass) remains off until restarted.
To Next Page
Loading...
Need help?
General