Question about Powerware 9120 UPS System
There is a line detection circuit which is coupled to the logic gate to switch on the charging as it should activate the circuit.
So check from the circuit on the ac line detection and the signal feed to the circuit, there can be a failure on this circuit. Secondly there is a possibility that the relay for charging has failed.
Posted on Mar 17, 2011
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Posted on Jan 02, 2017
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