I'm Trying to rewire a multi input voltage Transformer to 115 volts US ,With a 5 wire primary side, without a schematic,. This transformer was made in Europe, Any information would be very helpful, Maybe a good quality replacement could be the fix.
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I have of those sitting around, but also not tested, but it appears the primaries are in inline order, so: Beige-brown-gray(ct)-white-blue, corresponding to 120-100-0-100-120.
So , Beige & Gray would be 120v primary? Beige being 120v and Gray being 0v , Do I add 120v blue or Gray 0v for the 120v Total on the primary on the neutral side ?
Thank You .
Thank You .
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I could test mine in the next few days, but going by the label 'Prim 120/100-120V' and there being 5 wires in the primaries, that's what it appears.
You can try measuring the resistance, the 120V winding would have slightly more resistance.
If it is 120-100-0-100-120, check what is in use for the 240V supply in Europe, must be 120-0-120 in series, not connecting center tap.
If it is 120-100-0-100-120, check what is in use for the 240V supply in Europe, must be 120-0-120 in series, not connecting center tap.
Just follow the wires from inlet cord or socket.
And post photos of the id plate at the back.
If you are not comfortable doing this, please take it to a professional rather than risking your life.
And post photos of the id plate at the back.
If you are not comfortable doing this, please take it to a professional rather than risking your life.
I just wanted say, Thank You to everyone for the help. I have a much better understanding of how to connect this Transformer to a 120 line voltage.
The schematic lays it out, The 1st and 4th wire for the hot side and wires 3 and 5 on the neutral , Very much appreciated..
The schematic lays it out, The 1st and 4th wire for the hot side and wires 3 and 5 on the neutral , Very much appreciated..
Just verify it physically, it may be 5 taps on the same winding like I said above.
Also, see how they have kept the wires in place in the unit, may be there are jumpers used.
Those can be rearranged.
And see if any printing / label is there, similar to that on computer motherboards, giving some information about this, as it is a fairly common thing, because they have provided multiple windings.
Also, see how they have kept the wires in place in the unit, may be there are jumpers used.
Those can be rearranged.
And see if any printing / label is there, similar to that on computer motherboards, giving some information about this, as it is a fairly common thing, because they have provided multiple windings.
Sorry this is incomplete but I dug into mine and found the primary wires Beige (Brown actually) and Gray soldered together, White unconnected, leaving Purple (misidentified as "Brown" in #2) and Blue to connect to incoming mains. With 121VAC (today's mains) across Blue and Purple, I get 31.3VAC across the two Green secondaries and 48.0VAC across the two Red secondaries. So mine is temporarily wired for 1/2 voltage already...
I think your transformer is wired to 220 or 240V, I think you or OP need to de-solder and separate the brown and gray wire and use a ohm meter to verify the white wire belong to which primary winding, also check if the white wire is 100V or 120V.