Load is 130A FLA at 220V = 28.6KVA. Supply is 3-phase, "Y", 208V.
Using a 120-240/12-24 buck-boost transformer, what KVA should I look for? One source says that this transformer increases voltage by 10 percent, so KVS should be rated at 10 percent also. This means I should look for 3KVA transformer?
Also, if my understanding is correct, because of the nature of buck boosts, under light loading the output voltage will be higher than under heavy load. The equipment should be OK with this voltage swing, and if not, a full isolation transformer should be used. What might this swing be? (Note my use of "might"...)
Is my thinking sound?