Because of the age and make of my transformers I can no longer get information from the manufacturer. I'm installing some new protective relays on the feeders to my building transformers. I'd like to set Inst at 2x no load inrush current. But I can't find what the in rush is. Is there a way to estimate it. The transformers are 1500 KVA padmount 5.0% impd, 4.16kv to 480V, delat/wye. Any best way to guess at the inrush?
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