Primary Winding

Definition - What does Primary Winding mean?

Primary Winding is a coil wrapped in such a way that when the amount of current is changed it causes a change in the current of the neighboring circuit. It is found in transformers and used to draw power from the source. Its main function is to circulate the current and magnetize the core. The combinations of winding may vary from the type of transformer, for instance, in the three-phase transformer, there is three-legged iron core and every leg has a respective type of Primary Winding.

Petropedia explains Primary Winding

Generally transformers have two types of winding, i.e., primary and secondary winding. Usually, the Primary Winding is connected to a high voltage or current and completely wrapped with a cloth. It is noted that the Primary Winding is always the innermost winding as it minimizes the capacitance of the circuit. Moreover, it reduces the noise coupling of some components in the transformer. The construction of a transformer affects the leakage inductance of the winding. However, the winding should always be concentric to maximize the coupling effect.

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