Need transformer Wiring diagram help

TFPace · Sep 7, 2019

Guys,

I bought this Italian press at auction (online) in Surrey, BC.

There is no name plate information.
The motor data is 380wye/220delta 50 Hertz.

From my reading 60 Hertz is standard in Canada.
In the control cabinet there's a small tformer.

From the attached pictures can guys interpret how this is wired?
I have had no luck in learning how the shop was wired in Canada. The owner is overseas on holiday.

I'm not sure if this tformer is stepping down the 480 to run the press near the 380 nameplate voltage.

Thanks,

Tom

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johnoder · Sep 7, 2019

100VA is tiny, so I would suppose its a control transformer - making juice for relays / mag starter coils

TFPace · Sep 7, 2019

johnoder said:
100VA is tiny, so I would suppose its a control transformer - making juice for relays / mag starters

Thank you John

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johnoder · Sep 7, 2019

Many such coils have the voltage they need printed on them in plain sight - which will be what the transformer is putting out currently

SAF · Sep 7, 2019

The control transformer is wired for 480V input, and 120V output for the controls.

The motor is likely wired for 380V input, but powered at 480V 3Φ 60Hz.

Motor will run fine at 480V 60Hz, but run at 20% faster than rated speed for 50Hz.

SAF Ω

TFPace · Sep 7, 2019

SAF said:
The control transformer is wired for 480V input, and 120V output for the controls.

The motor is likely wired for 380V input, but powered at 480V 3Φ 60Hz.

Motor will run fine at 480V 60Hz, but run at 20% faster than rated speed for 50Hz.

SAF Ω

Hello SAF Ω

This is what I was hoping to find out.

Thank you guys for the help!!!

Tom

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