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# Transformer

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#### Gagan

##### New Member
Can i connect 500 v ac supply to a 220v ac to 6 v step-down transformer
Does it burn the transformer

Does it burn the transformer

Yes, the transformer will be destroyed.

JimB

Then what transformer should i use to convert 500 v ac to 6 v ac

Then what transformer should i use to convert 500v ac to 6v ac

Then what transformer should i use to convert 500v ac to 6v ac
Hm, I think you should use a 500V to 6V transformer made for whatever frequency you require.

Can you inform where can i buy that

Any transformer manufacturer. I have no idea where you live so can´t recommend anything specific. Don´t forget to tell them how much current you require.

I can find transformers for 480V to 6V or 6.3V. I think in this case 500=480.

Can i connect 500 v ac supply to a 220v ac to 6 v step-down transformer
Does it burn the transformer
Where are you obtaining the 500v? presumably it is single phase?
Max.

What is the frequency?

Well his information is pretty vague, but assuming 50/60Hz AC?, then a simple and cheap way would be to use two (identical) 240V to 6V transformers - put the primaries in series, and the secondaries in parallel - job done!

then a simple and cheap way would be to use two (identical) 240V to 6V transformers - put the primaries in series, and the secondaries in parallel - job done!
Been there, done that, works well.

But you have to get the phasing correct, otherwise the transformers will be destroyed.

JimB

Been there, done that, works well.

But you have to get the phasing correct, otherwise the transformers will be destroyed.

You ought to try it with three 1KW isolation transformers in parallel, for temporarily feeding an immersion heater - identical transformers, wired them identically - BOOM!!! - one of them was wired differently internally. Then you've got the problem of finding out which one

Easy enough with a little thought - just disconnected one end of each transformer, and measured the voltage between each of the three wires, two were 0V (near enough) the third was 480V, so flipped the connections to that one.

It was a temporary solution to my faulty immersion heater (which was leaking to earth), while I was waiting for my new central heating installation. Worked perfectly for a couple of months, and I had the transformers knocking around doing nothing anyway.

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