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Old 28th July 2012, 02:14 PM   #1
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Default Tranny with multiple primary winding

Labeled red,yellow,orange,gray,white,brown wich I believe correspond to their respective voltage, wich one would be 120v? And wich would be neutrlal?
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Old 28th July 2012, 02:35 PM   #2
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Basically you need to go at it with a multimeter set to ohms.

Between most of the colours and one of the others you should see a high resistance.

You might have a split primary transformer.

If you make up a table and measure RED - YELLOW, then RED - ORANGE, keep going through all the possibilities and publish your results, one of us will have a go at suggesting what you have there.

DO NOT connect it to mains voltage until we have advised you where to start.
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Old 28th July 2012, 04:29 PM   #3
DF96 is offline DF96  England
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Better still, try to find the manufacturers data sheet. If you can't, follow KatieandDad's advice - especially the last sentence!
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Old 28th July 2012, 04:35 PM   #4
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Quote:
Originally Posted by KatieandDad View Post
Basically you need to go at it with a multimeter set to ohms.

Between most of the colours and one of the others you should see a high resistance.

You might have a split primary transformer.

If you make up a table and measure RED - YELLOW, then RED - ORANGE, keep going through all the possibilities and publish your results, one of us will have a go at suggesting what you have there.

DO NOT connect it to mains voltage until we have advised you where to start.
Draw a table (not a dining room table) but a grid of 10 x 10 boxes.

Across the top write RED, YELLOW, ORANGE, GREY, WHITE, BROWN.

Down the side write the same RED, YELLOW, GREY, WHITE, BROWN.

Then in each box write the resistance reading in Ohms.

Obviously RED-RED will be ZERO as will ORANGE-ORANGE.
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Old 28th July 2012, 04:59 PM   #5
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Alright thanks, Ill be back with results.

If its any help, the secondary outputs are:
Green x2
Red x2
Blue
Brown
Black
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Old 31st July 2012, 06:45 PM   #6
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Came back to the putrid stench of a fried xformer. -________________-
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Old 31st July 2012, 07:06 PM   #7
Mooly is offline Mooly  United Kingdom
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Always use a low wattage bulb in series with the primary (or more correctly mains input as we don't know the primary) for testing and determining connections.

The primary windings will normally be thinner wire than the secondaries for transformers with lower secondary than primary voltages. ie, the sort we use on here
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Old 31st July 2012, 08:45 PM   #8
DF96 is offline DF96  England
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We did warn you!!
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