KVA = 1000 x Volts x Amps
Amps = KVA x 1000 / Volts
Your coil is single phase so forget 1.73
The current in the supply leads to the transformer will depend on the transformer type and connections. The transformer primary may be single phase or three phase and may be 415 Volts or 240 volts.
You may use a conventional transformer or an auto-transformer.
And, you are just 9% high at 415 Volts. It may be possible to run the coil on 415 Volts.
It depends.
Bill
--------------------
"Why not the best?"
Jimmy Carter