Transformer coil

Transformer coil is a type of coil that requires a coil in the transformer to operate. According to the number of phases: 

(1) Single-phase transformer: used for single-phase load and three-phase transformer group. (2) Three-phase transformer: used for raising and lowering the voltage of the three-phase system. According to the capacity: the coils of small transformers generally use round copper wires with insulation, and the large transformers use flat copper wires with insulating layers.

Technical requirements for transformer windings:

(1) Electrical strength requirements The winding insulation should have sufficient electrical strength, not only to withstand the normal working voltage of the transformer during long-term operation, but also to withstand the impact of atmospheric overvoltage and operating overvoltage.

(2) Mechanical strength requirements The winding structure should have sufficient mechanical strength to withstand the impact of strong short-circuit current, and the structure will not be deformed or damaged under the impact of strong electromagnetic force.

(3) The heat dissipation capacity requires that the oil passages in the winding insulation structure should be able to meet the heat dissipation requirements of the windings. Even if the transformer windings are short-circuited and a large amount of heat is added, the windings will not be burned.