One kind of 66kV transformer sudden short-circuit

The present invention relates to a sudden short-circuit 66kV transformer, three-phase three-leg core is provided in the fuel tank of the transformer, the low voltage coil and the sleeve has a high voltage coil on the core, high voltage and low voltage winding coil head end first, axial outlet end , the cannula is introduced through the cable; high voltage winding all-continuous structure, the two three-spoke combined conductor and wound; high and low pressure side of the pressure plate are made of a whole sub-sub-segment platen, and high and low pressure side of the fan-shaped center with a sub-pressure plate, symmetrically placed; sub-platen and the platen positioning opening holes, connected by an insulating screw. The present invention optimizes the structure of the insulation of the coil, the coil ampere-turn Ping Heng improved, while ensuring the insulation reliability, reduce eddy current loss transverse coil, the coil greatly reduce the stress level short circuit, short-circuit capacity of the product improve, further optimize product design provides the foundation basis.