Industrial frequency transformer

Abstract

The invention discloses an industrial frequency transformer. The industrial frequency transformer comprises a transformer winding framework; primary coils and secondary coils are wound in a framework groove of the transformer winding framework; the primary coils and secondary coils are made of copper wires; an insulating rib which is in a framework structure is arranged on the transformer winding framework; the primary coils are arranged on the right side of the insulating rib; the secondary coils are arranged on the left side of the insulating rib; the primary coils are connected with a first leading-out end which is arranged on the transformer winding framework; the secondary coils are connected with a second leading-out end which is arranged on the transformer winding framework; a plurality of silicon steel sheets are inserted into coil packages of the primary coils and the secondary coils; the plurality of silicon steel sheets are in EI shapes; a position which is arranged on the primary coils and above the silicon steel sheets is in series connection with a thermistor. The industrial frequency transformer has overcurrent, overpressure and over-temperature protection functions and can be automatically recovered and repeatedly used when being used expectedly in abnormal state.

Description

technical field [0001] The invention relates to a transformer, in particular to a power frequency transformer. Background technique [0002] Power frequency transformers are widely used in a variety of electronic products, and their functions mainly include: voltage transformation; impedance transformation; isolation; stable voltage (magnetic saturation transformer), etc. There are two common causes of transformer damage: primary overvoltage and secondary short circuit. Both of these faults will cause the transformer's "copper loss" (heat consumption when current flows through the coil) and "iron loss" (loss caused by "eddy current") to increase sharply in a short period of time, and cause the coil temperature to rise . If it is not dealt with in time, the insulation of the coil will be reduced, and even the transformer will be burned. If the transformer has the above faults and is not cut off in time, some of the associated components in the circuit will also be overload...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this solution is that it uses a disposable protective element

If the fuse is blown, the transformer will be scrapped, thus greatly increasing the maintenance cost of the equipment

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