Thomas & Betts 9395 - Manual (Page 62)

UPS 225 - 275 kVA
User’s and Installation Guide
1027212
Revision B
2
5.3.10 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.
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 Eaton Corporation-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. 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 5.3.1 or 5.3.2.