Multi-winding self-coupling transformer

Abstract

The invention discloses a multi-winding self-coupling transformer. A main body of the multi-winding self-coupling transformer is a support; a plurality of groups of transformer bodies; each group of transformer bodies comprises an iron core and a winding; the winding comprises a low voltage winding, a public winding and a series connection winding; the low voltage winding, the public winding and the series connection winding are connected serially; the low-voltage winding which is used as an input end is connected with input voltage; and the series connection winding which is used as an output end is connected with an output circuit. The multi-winding self-coupling transformer has the beneficial effects that the transformer has a simple structure, is reasonable in layout, firm in connection, long in service life, low in use cost and convenient to connect, and can be used for preventing the transformer from being damaged due to overheat of the coil; and the overall line arrangement is order.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a multi-winding autotransformer. Background technique [0002] The autotransformer is a product for short-time start-up of the motor. Most of the known autotransformers are assembled from iron cores, windings, and channel steel. During the starting process, the autotransformer windings will generate heat, which will easily cause the inner coil of the transformer to age or even burn out, reducing the The service life of the autotransformer is shortened, so there are strict restrictions on the starting time and frequency of starting. In order to improve this situation, someone improved the structure of the transformer, [0003] For example, the patent "transformer protector" with the patent application number of 932004871.2 discloses the structure of a transformer protection device. Connect the normally open contact of the relay J1 and the thermal relay RJ in series, connect the rela...

AI Technical Summary

Problems solved by technology

Such a structure has the functions of automatic protection against over-temperature, overload and phase failure, and can also solve the above problems. However, as an accessory of the transformer, the structure is relatively complicated, there are many parts, the coordination requirements between them are high, and the installation is not convenient.

Furthermore, the multiple taps on the secondary coil of the autotransformer in the past are not neatly arranged, which may easily cause inconvenient wiring, short-circuit each other, loose wiring, and unsafe use.

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