Eaton 9EHD Series, User'S Installation And Operation Manual

Page: 79 / 90

6 4 11 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-energises the critical load and powers down the UPS
immediately, without asking for verification.
The UPSs, 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-energise 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 .
The input, output, battery, and optional bypass backfeed contactors open, and the power module is turned
off immediately, without asking for verification.
CAUTION
Do not attempt to restart the system after the REPO until the cause of the shutdown has been
identified and cleared.
2. To deactivate the REPO switch in preparation for restarting the UPS, insert the supplied key and rotate
clockwise until the red pushbutton releases. To remove the key, rotate the key back to the vertical position.
3. Restart the UPS by following the procedure in paragraph 6.4.1 or 6.4.2.
WARNING
Power is present inside the UPS cabinet after the upstream input feeder circuit breakers are
opened because of the installed external battery cabinet.
Eaton 9EHD UPS (20-40 kVA, 380/400/415V) Installation and Operation Manual 71