Powerware 650825 kVA operation manual Using the Remote Emergency Power−off Switch

UPS OPERATING INSTRUCTIONS

C A U T I O N

All power to the critical load is lost when the LOAD OFF is selected in the following step. You should use this feature only when you want to de-energize the critical load.

6.To shut down the UPS, press LOAD OFF from the Load Off menu bar, and hold for three seconds. To abort the shutdown, press CANCEL.

When LOAD OFF is selected and held for three seconds, the input, output, battery, and bypass backfeed contactors open, and the power module is turned off on all UPSs.

7.If another UPS is to be shutdown, proceed to that UPS and repeat Steps 1 through 6.

C A U T I O N

Do not attempt to restart the system after the Load Off until the cause of the shutdown has been identified and cleared.

8.Restart the UPS after pressing the LOAD OFF pushbutton by following the procedure in paragraph 7.4.1 on page 7−20 or 7.4.2 on page 7−21.

W A R N I N G

Power is present inside the UPS cabinet sections until the upstream input feeder circuit breaker is opened.

7.4.11Using the Remote Emergency Power−off Switch

A UPS emergency power−off is initiated by the REPO pushbutton switch. In an emergency, you can use this switch to control the UPS output. The REPO switch de-energizes the critical load and powers down the UPSs immediately, without asking for verification.

The UPS, including Bypass, remains off until restarted.

C A U T I O N

All power to the critical load is lost when the REPO switch is activated in the following step. You should use this feature only when you want to de-energize the critical load.

NOTE The following instructions are for the Eaton−supplied REPO switch. If a customer−supplied REPO switch is used, it may not activate in the same manner; refer to the operating instructions provided with the switch.

To use the REPO switch:

1.Firmly push the red pushbutton until it locks into place. The switch latches into the activated state (see Figure 7-7).

The input, output, and bypass backfeed contactors open, the battery breaker or disconnect is tripped, and the power module is turned off immediately, without asking for verification on all UPSs.

EATON Powerware® 9395 UPS (650–825 kVA) Installation and Operation Manual S 164201725 Rev 2 www.powerware.com 7−27