Transfer From Double Conversion To Bypass Mode - Eaton 93PM Installation And Operation Manual

UPS Operating Instructions
9. If requested, enter the Level 1 password. Default password is 1111.
The rectifier and inverter turn on. The inverter continues to ramp up to full voltage.
Once the inverter reaches full voltage, all UPS inverter switchgear close and the static switches turn off.
Power is now supplied to the critical load in dual conversion mode from all UPSs. It takes approximately
one minute for the UPSs to achieve the dual conversion mode.
The Normal status indicator is illuminated.
NOTE
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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 parallel system.
2. Transfer the UPSs to bypass by performing the procedure in paragraph
7.4.9 Transfer from Double Conversion to Bypass Mode and Shut Down all
3. Perform the Load Off procedure in paragraph
The inverter and bypass switchgear open, and the power module is turned off on all UPSs.
4. Perform the battery charger off procedure in paragraph
The rectifier and battery switchgear open.
Power is present inside the UPS cabinet until the upstream input feeder circuit breakers and battery breakers
are opened. Wait at least 5 minutes before accessing internal components.
5. Open the all of the UPSs input feeder circuit breaker.
6. If dual feed, open all of the UPSs bypass feeder circuit breaker.
7. If IBCs are installed, open all battery breakers.
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To turn the battery charger on:
1. Tap the CONTROLS tab on the main menu navigation bar. The Control screen is displayed.
2. Tap the UPS CONTROLS tab on the secondary navigation bar. The UPS Control screen is displayed.
3. Tap the TURN ON CHARGER button.
To turn the battery charger off:
4. Tap the CONTROLS tab on the main menu navigation bar. The Control screen is displayed.
5. Tap the UPS CONTROLS tab on the secondary navigation bar. The UPS Control screen is displayed.
6. Tap the TURN OFF CHARGER button.
124 Eaton 93PM UPS (400V/480V Four-Wire – 100 kW Frame) Installation and Operation Manual 164000566—Rev 04
If the UPS is starting on a bus with other online paralleled UPSs, the UPS will not go to
bypass during startup. The UPS will start, sync to the other UPSs online, and go online.
7.4.17 Using the LOAD OFF
7.4.15 Charger Control.
WARNING
UPMs.
Command.