Operating instructions

UPS Operating Instructions
6-14 Eaton 9E UPS (40–60 kVA, 208/220V) Generation 3 Installation and Operation Manual P-164000302—Rev 1 www.eaton.com/powerquality
6.3.6 Transfer from Standard Normal Mode to HE Normal mode
To transfer the load to HE Normal mode:
1. S e l e c t th e CONTROLS symbol on the main menu bar. The System Control screen is displayed.
2. If not already selected, select UPS on the System Control screen.
3. On the UPS System Control screen, select the HE: DISABLE ENABLE command, then press the
RETURN pushbutton.
The UPS transfers to HE Normal mode if no abnormal power conditions are detected. If abnormal power
conditions are detected, the UPS will wait and transfer to HE mode when conditions are cleared.
The NORMAL status indicator is illuminated.
6.3.7 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 6.3.10.
The inverter and bypass switchgear open, and the power module is turned off.
3. Perform the battery charger off procedure in paragraph 6.3.8.
The rectifier and battery switchgear open.
WARNING
Power is present inside the UPS cabinet after the upstream input feeder circuit breakers are
opened because of the installed internal batteries.
4. Open the UPS input circuit breaker.
5. Open the UPS input feeder circuit breakers.
6. If the UPS is dual-feed, open the bypass feeder circuit breakers.
7. If the UPS is EBC capable, open the UPS battery breaker.
8. If EBCs are installed, open all EBC battery breakers.
6.3.8 Charger Control
To turn the battery charger on:
1. S e l e c t th e CONTROLS symbol on the main menu bar. The System Control screen is displayed.
2. Select Battery on the System Control screen.
3. On the Battery System Control screen, select the RESTING CHARGING command, then press the
RETURN pushbutton.
To turn the battery charger off:
1. S e l e c t th e CONTROLS symbol on the main menu bar. The System Control screen is displayed.
2. Select Battery on the System Control screen.
3. On the Battery System Control screen, select the CHARGING RESTING command, then press the
RETURN pushbutton.