UPS as a stand alone inverter? [RE-wrenches]

[Bill Loesch, Saint Louis Solar]

Warren,

Thanks for the explanation of how an online UPS can also be a non phantom
load. Sounds like some energy efficient design went into these boxes.

Bill Loesch
Solar 1 - Saint Louis Solar


>the Best inverter (Ferrups model 
>UPS) is not on all the time. That is the beauty of this UPS. It is 
>normally off and only comes on during a brown-out or blackout. it takes 
>2 to 4 ms for the inverter to switch on. However, as they have a big 
>ferroressonant transformer between the inverter and the load, the 
>collapsing magnetic field in the transformer holds up the load VA for a 
>good 20 ms so that at the computer, you don't see any power flicker 
>whatsoever. 

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