Eaton Power Xpert 9395 Installation And Operation Manual page 195

UPS Operating Instructions
The rectifier and inverter turn on. The inverter continues to ramp to full voltage.
Once the inverter reaches full voltage, the UPS output contactor (K3) closes. Power is now supplied to the
critical load in Online mode along with the other UPSs online. It takes approximately one minute for the
UPS to achieve Online mode.
The Online status indicator is illuminated. The UPS status indicates ONLINE. The UPM status indicates
ONLINE, CHARGER ON.
7 7 . . 4 4 . . 2 2 5 5 U U P P S S a a n n d d C C r r i i t t i i c c a a l l L L o o a a d d S S h h u u t t d d o o w w n n
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 distributed bypass system.
2. Transfer the UPSs to bypass by performing the procedure in paragraph
7.4.17 Transfer from Online to Bypass
3. Perform the LOAD OFF procedure in paragraph
7.4.27 Using the UPS LOAD OFF Pushbutton or
The input, output, battery, and bypass backfeed contactors open, and the power module is turned off.
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened
4. If the UPSs contain input breakers (CB1), open all UPS input breakers.
5. Open the input and bypass feeder circuit breakers on all UPSs.
7 7 . . 4 4 . . 2 2 6 6 C C h h a a r r g g e e r r C C o o n n t t r r o o l l
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 7 . . 4 4 . . 2 2 7 7 U U s s i i n n g g t t h h e e U U P P S S L L O O A A D D O O F F F F P P u u s s h h b b u u t t t t o o n n o o r r C C o o m m m m a a n n d d
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 the Load Off command on the Bypass Control Command screen. The
UPS LOAD OFF controls the UPSs' outputs by powering down the UPS and de–energizing the critical load.
174 Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201764—Rev 14
Mode.
Command.