USES of UPS

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Fortunato Garmendia said:
IS it possibly to connect a transformer after the output of a UPS?. doing this have any trouble?
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On some models of UPS there is a "walk in" to avoid the possible problems with transformer inrush or other loads with high initial currents like incandescent lamps.
But UPS models come in different flavors.
Check the specification is probably the best advice.
 
Transformers are connected downstream from UPS systems all the time ie 480/277 VAC output to 480-208/120 VAC PDU's. UPS's can handle a certain percentage of overload for in rushes, if the in rush exceeds this value the UPS will go to bypass, after a predetermined period of time the UPS will return to normal operation
 
brian john said:
Transformers are connected downstream from UPS systems all the time ie 480/277 VAC output to 480-208/120 VAC PDU's. UPS's can handle a certain percentage of overload for in rushes, if the in rush exceeds this value the UPS will go to bypass, after a predetermined period of time the UPS will return to normal operation
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Assuming that the UPS is equiped with a bypass of course.
 
I am talking more than an off the shelf UPS off line UPS. But for that matter an off line UPS can supply a transformer if it is within the rating of the UPS.

Additionally with the UPS "I have worked on and with" walk in referred to the unit start up minimizing inrush on the distribution system feeding the UPS, not the load.
 
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