INTRODUCTION: - Transformer insulation and components

In addition, the transformer windings may be considered to have polarity marks on each winding to signify all terminals that have the same polarity at any given time. For example, when H1 is positive with respect to H2 in the diagram above, X1 will also be positive with respect to X2 and T1 will be positive with respect to T2 and also to T3. ................
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