3 UPS Operations
Powerware
®
Plus 12 Operator's Manual (164200090 Rev E) 19
Local/Remote Emergency Power-Off
The EPO feature disconnects the protected equipment from all power sources by
opening (O) the UPS battery breaker and the output breaker. The EPO does not
disconnect the UPS from the input AC power source.
To operate, press the EPO switch located on the UPS front panel (see Figure 2 on
page 7).
After the EPO switch is pressed, the internal logic power supply is on if AC
power is present at the UPS input.
With the EPO feature, a REPO switch can be wired to the UPS. This allows a normally
open, pushbutton switch to be wired to the UPS. This REPO switch can perform the
same functions as the EPO switch located on the UPS front panel. See Electrical
Installation" on page 42 for information regarding its electrical ratings and installation.
After the EPO or REPO switch has turned off the UPS, you can restart the unit by first
opening (O) all the circuit breakers (input, output, and battery) and proceeding with the
system startup defined in System Startup" on page 22.
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