First, are you talking about a solid state UPS or a rotary (flywheel) UPS? We'll assume the former for the rest of the discussion.Pls help me regarding this issue, if I need an output of 120kVA which is from stepdown transformer (400V to 200) fed from UPS. The capacity of UPS should be?
Is there any relation, or UPS of 120 kVA would be enough?
My company makes them up to 500KVA, although our primary business is frequency conversion. Some big dog UPS manufacturers are Eaton, APC, Liebert to name a few.Where would one obtain such a huge UPS anyway... ??
This is basic physics, but it appears they're more efficient than I thought. You can read more here. You can also look here and here.Is there any reference material for the said solution "if the transformer is 88% efficient, the UPS will need to be 120/0.88 = ~136KVA minimum."
We could be a lot more help if you elaborated on this.Actually, we've faced overload problem that's why I'm interested in calculating capacity