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UPS Operating Instructions
10-7
Powerware
®
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
10.1.10 Using 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 UPS immediately, without asking for verification.
The UPS, including Bypass, remains off until restarted.
To use the REPO switch:
CAUTION
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 Powerware-supplied REPO switch. If a
customer-supplied REPO switch is used, it may not a ctivate in the same manner; refer
to the operating instructions provided with the switch.
1. Press the REPO pushbutton switch.
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.
CAUTION
Do not attempt to restart the system after Load Off until the cause of the shutdown has been
identified and cleared.
2. To restart the UPS after using the REPO pushbutton, reset the REPO switch and
then follow the procedure in paragraph 10.1.1 or 10.1.2.