Transformer Suitability

[rrossey]

I purchased an induction heating machine requiring 3 phase 440 volts.

I have 600 volt supply in the shop which normally measures 575 volts.

A pre-used transformer of 600 volt to 480 volt is avalable at a reasonable price.

Any suggestions if this transformer can be used for this machine?

As per the transformer ratio, from 575 volt I will get 460 volts.
From 440 volts it is 4.5% higher.
Is it permissible to apply 4.5% higher voltage to the machine?

RRossey

[Al_The_Man]

Most industrial machinery have a ±10% supply tolerance.
Al.

[rrossey]

Thanks Al.

Looking at some listings, for some transformers it is mentioned DELTA for primary vopltage.
Is there specific application for transformers with Delta or Star connected primary windings?

RRossey

[Al_The_Man]

Not many are star primary, if a neutral is needed than you would need a star secondary.
Otherwise the common configuration is Delta/Star.
Al.