UPS OPERATING INSTRUCTIONS

7.4.2Starting the Distributed Bypass System in Bypass Mode

If the inverter output of the distributed bypass system is not available and the critical load needs to be energized:

C A U T I O N

In Bypass mode, the critical load is not protected from commercial power interruptions and abnormalities.

1.If the UPSs contain input breakers (CB1), verify that all input breakers are open.

2.Close all MOBs.

3.Close all UPS input feeder circuit breakers.

4.Close all UPS Bypass input feeder circuit breakers.

5.Observe the UPS control panel displays becoming active, indicating logic power.

6.On any UPS, press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.

7.On the System Status screen, verify the UPS status is SHUTDOWN and the UPM status is OFFLINE.

8.If the UPSs contain input breakers (CB1), close all input breakers.

9.On the System Status screen, select the BYPASS command.

10.Press the CONTROLS pushbutton on the System Status menu bar. The Bypass Control Command screen is displayed.

11.On the Bypass Control Command screen, select GO TO BYPASS.

12.Press the SELECT pushbutton on the Bypass Command menu bar.

The critical load is immediately supplied by the bypass source in Bypass mode from all UPSs.

The BYPASS status indicator is illuminated. The Bypass status indicates ON. The UPM status indicates SHUTDOWN, CLOSE BATTERY.

7.4.3Starting the UPSs UPMs

To start the power modules without transferring the critical load to Normal mode:

1.If the UPSs contain input breakers (CB1), verify that all input breakers are open.

2.Close all UPS input feeder circuit breakers.

3.Close all UPS Bypass input feeder circuit breakers.

4.Observe the UPS control panel displays becoming active, indicating logic power.

5.On any UPS, press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.

6.On the System Status screen, verify the UPS status is SHUTDOWN and the UPM status is OFFLINE.

7.If the UPSs contain input breakers (CB1), close all input breakers.

EATON Powerware® 9395 UPS (1000–1100 kVA) Installation and Operation Manual S 164201764 Rev 1 www.powerware.com

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Powerware 10001100 kVA operation manual Starting the Distributed Bypass System in Bypass Mode, Starting the UPSs UPMs