I have a toroidal 3 winding transformer. It's a step up, lets say 1:10 ratio, the secondaries are identical. If I measure the leakage inductance, shorting 1 secondary at a time, I get about the same leakage for both secondaries. If I short both, I get about 10% smaller than the individual leakage. Anyone know the reason or have an idea of what the equivalent circuit would look like?
Electronic – leakage inductance on three winding transformer
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Best Answer
You have two parallel leakage inductance paths so obviously with both other coils shorted , it will be less than just one shorted.