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Anonymous Poster #1

220 Electrical Power

10/09/2012 11:59 AM

I am running three phase 220-240 on my machines. I have a new machine that calls for 208 single phase. Is there a way to get 208 single from 220 three phase???? Thanks
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PWSlack
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#1

Re: 220 electrical power

10/09/2012 12:00 PM

Yes. There are several.

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paul spreitzer
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#2
In reply to #1

Re: 220 electrical power

10/09/2012 12:03 PM

Are they going to be simple or costly and what would they be thanks
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PWSlack
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#3
In reply to #2

Re: 220 electrical power

10/09/2012 12:13 PM

What rating is the load?

http://docs-europe.electrocomponents.com/webdocs/062d/0900766b8062d585.pdf

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paul spreitzer
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#4
In reply to #3

Re: 220 electrical power

10/09/2012 12:43 PM

After reading the specs, 30AMP.
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TonyS
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#5

Re: 220 Electrical Power

10/09/2012 1:34 PM

Just connect between two phases, there's no need to spend money on an inverter. The slight voltage difference is well within limits.

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paul spreitzer
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#6
In reply to #5

Re: 220 Electrical Power

10/09/2012 3:07 PM

Will that drop the voltage if i use only the two. Voltage is what it is right???
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Codemaster
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#7
In reply to #6

Re: 220 Electrical Power

10/09/2012 3:57 PM

No, 220 - 240 volt (the phase-phase voltage of your supply) is a bit higher than the nominal rating of your new machine. But it should be OK, TonyS says.

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TonyS
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#8
In reply to #6

Re: 220 Electrical Power

10/10/2012 4:37 PM

You have 220V between the phases. Your machine requires 208V. Normal tolerance (UK) would be +/- 10% so 208+10%=228V.

You're M/C will be fine without an inverter.

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paul spreitzer
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#9
In reply to #8

Re: 220 Electrical Power

10/10/2012 7:37 PM

Thanks
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Codemaster
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#10
In reply to #9

Re: 220 Electrical Power

10/11/2012 5:57 AM

You might need to be careful that the neutral on your 1-phase appliance is not connected to earth (ground if you're American ). It shouldn't be, but it doesn't matter if it is on 1-phase supply, as the neutral is then the neutral of a 3-phase supply. If it is you will have a short circuit when you connect a phase to the neutral terminal.

Check the resistance between neutral and earth terminals on the appliance. If it's not very high (megohms) you have a problem.

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Codemaster (2); paul spreitzer (4); PWSlack (2); TonyS (2)

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