Transformer, Single Phase 208V Primary to 230V/115V secondary

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ELLIO083

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Lafayette, La
I have a customer that needs to convert the 230V secondary to a 220V European voltage secondary, can anyone help me with a detailed rundown/wiring diagram on how to accomplish this?
 
My first thought is if the frequencies between the presumably American supply and intended European load are compatible.

That said, I've worked all over the world, and everything I've ever used in that range could operate safely on 220 - 240 V.
 
MAC702 said:
My first thought is if the frequencies between the presumably American supply and intended European load are compatible.

That said, I've worked all over the world, and everything I've ever used in that range could operate safely on 220 - 240 V.
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Agreed. Most things are good with +-10% on the voltage level itself, it's the frequency that will get you more often.
 
Assuming the 50/60Hz frequency change and 220/230V voltage difference are acceptable, the only change is to remove the connection to the center tap on the secondary, and bond one end of the secondary to ground.
 
mpoulton said:
Assuming the 50/60Hz frequency change and 220/230V voltage difference are acceptable, the only change is to remove the connection to the center tap on the secondary, and bond one end of the secondary to ground.
Click to expand...

Ahhh, because even though the equipment shouldn't care (right?), we technically would have a "220" V hot-to-grounded/neutral instead of a 230 V hot-to-hot?
 
mpoulton said:
Assuming the 50/60Hz frequency change and 220/230V voltage difference are acceptable, the only change is to remove the connection to the center tap on the secondary, and bond one end of the secondary to ground.
Click to expand...

So, disconnect X2 & X3 and ground X4, which leaves you with X1 being you single 220V hot lead?
 
MAC702 said:
Ahhh, because even though the equipment shouldn't care (right?), we technically would have a "220" V hot-to-grounded/neutral instead of a 230 V hot-to-hot?
Click to expand...
It's nominally 230V live to neutral. It's a fudge to try get uniformity in the EU.
My voltage at home measures 245Vac. I guess it's the same for neighbours fed from the same distribution transformer.
At work it was, and probably still is, just under 400Vac line to line.
 
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