208v to 480v transformer
208v to 480v transformer
(OP)
Recently we have been looking at a new piece of machinery. The power requiremnts for this is 3ph 460v @ 100A. Currently we have 3ph 208V service. We have been told that a 112.5KVA step-up transformer will give us what we need. With a set-up like this, what would be the required amperage service coming in at 208 need to be in order for this to work? Or is it not important? From the little i know about this kind of stuff (and i may be wrong) the amperage i need coming in at 208V is relevant to the amount i want to boost the voltage (480V). I have an electrician coming in to take a look but i always like to get a second, third, or fouth opinion





RE: 208v to 480v transformer
David Castor
www.cvoes.com
RE: 208v to 480v transformer
RE: 208v to 480v transformer
RE: 208v to 480v transformer
Muthu
www.edison.co.in
RE: 208v to 480v transformer
RE: 208v to 480v transformer
If you take a new service at 480 V, you could install your own transformer to convert the incoming 480 V to 208 V to serve the rest of the facility.
If you are thinking about a 480 V service plus a separate 208 V service, you'll want to run this by your local inspector. The general rule in the NEC permits only one service per facility, but there are exceptions that might apply in your case. The decision is up to your local inspector.
RE: 208v to 480v transformer
RE: 208v to 480v transformer
RE: 208v to 480v transformer
RE: 208v to 480v transformer
What are you thoughts on an autotransformer for this application?
I assume it wouldn't work based on the 100A service, but I'd like to hear you thoughts in general.
I know an autotransformer would be smaller, lighter, cheaper, and more efficient. Is there a reason it wouldn't work?
-John
RE: 208v to 480v transformer
RE: 208v to 480v transformer
I can't think of any standard voltages that may be reconnected to boost 208 volts to 460 Volts or 480 Volts (standard supply voltage for 460 Volt equipment.)
But Hammond may make a suitable auto-transformer.
Look at a Hammond #Y112QTC
h
Disclaimer; I spent some time on the Hammond site. I would want a Hammond rep to reassure me that this transformer will accept 208 volts in for 460 or 480 Volts out.
Bill
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"Why not the best?"
Jimmy Carter
RE: 208v to 480v transformer
I assume 208Y:480Y requires taps X1,X2,X3/H4,H5,H6.
-John