3 phase operating voltage

[lecto]

I know that 110 and 220 volts are available in a three phase installation what other voltage is normally available in the installation? I'm getting mix up with 500 and 400 volts.

[erickench]

Are you sure it's three phase? It might be a single phase three wire 110/220 volt system. Picture a 220 volt transformer with a %50 center tap.

[Spir Georges GHALI]

lecto said:

I know that 110 and 220 volts are available in a three phase installation what other voltage is normally available in the installation? I'm getting mix up with 500 and 400 volts.

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Dear Mr. Lecto ;

 

You know that we have multi kind of supply that are :

– Single Phase + Neutral for 127V ( accordingly to the kind of source )

– Single Phase + Neutral for 220V ( accordingly to the kind of source )

– 3 phases + Neutral for : 127/220V that means : 127 between any phase & neutral, 220 between any 2 phases

– 3 phases + Neutral for : 231/400V that means : 231 between any phase & neutral, 400 between any 2 phases

So, you should know the kind of your network.

 

Beside, we can , accordingly to the kind of loads, mix 2 kinds of network, but we should be carful.

 

Regards.

[Author]

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