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2. Installation
2.7 Emergency Power Off (EPO)
The end user is responsible for the installation of an emergeny power off function. Installation must
be carried out in compliance with local code regulations.
To power down the entire installation via an emergency power off function, the action should
perform the following via a single device:
◗
sever the AC input power to the Comet EXtreme
◗
remotely trip off the battery circuit breaker on the Comet EXtreme
◗
remotely trip off the circuit breaker for the additional battery cabinet(s), if applicable
To accomodate the EPO function, the Comet EXtreme UPS and battery cabinets come equipped
with battery circuit breakers with shunt trip mechanisms. By applying 24 Vdc or 24 VAC across the
shunt trip coil, the circuit breaker will trip off, thereby disconnecting battery input to the inverter.
◗
Check that the upstream circuit breaker on the low voltage switchboard, the input circuit breaker,
and the battery circuit breaker are all in "off" position
◗
Remove the connection cover panel from the battery module
◗
Connect the 24Vdc or 24 VAC output of the EPO circuit to the shunt trip coil across terminals 1
and 4
◗
Once the connections are made, reposition the connection cover panel and reset all circuit
breakers
1
2
3
4
Emergency Power Off
emergency
off button
+
24 VDC/VAC
–
Battery circuuit breaker shunt trip connection
Connection diagram for battery circuit breaker shunt trip on terminal block
5b
Summary of Contents for 5103304 Comet EXtreme
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