V-profile opened current transformer and production process thereof

Abstract

The invention relates to a V-profile opened current transformer. The V-profile opened current transformer comprises a first mutual inductor body, a second mutual inductor body and a metal locking tape, wherein the first mutual inductor body comprises a first pouring plastic shell, a first half-circular iron core and a first secondary coil, the second mutual inductor body comprises a second pouringplastic shell, a second half-circular iron core and a second secondary coil, the first half-circular iron core is formed by splicing a first large half-circular iron core and a first small half-circular iron core, V-shaped contact concave surfaces are respectively formed at two ends of the first half-circular iron core, the second half-circular iron core is formed by splicing a second large half-circular iron core and a second small half-circular iron core, V-shaped contact convex surfaces are respectively formed at two ends of the second half-circular iron core, and the contact convex surfaces and the contact concave surfaces are spliced to form a circular mutual inductor body. The V-profile opened current transformer has the advantages of simple structure, stable and reliable performance, small magnetic leakage and high magnetic conductivity.

Description

technical field [0001] The invention relates to an open current transformer, in particular to a V-shaped surface open current transformer and a production process thereof. Background technique [0002] At present, with the rapid development of my country's economy, the demand for electric energy in the whole society is increasing, and the requirements are getting higher and higher, forcing the continuous improvement and updating of power system technology, and putting forward higher requirements for power equipment. Turn on the current transformer as one of the important measurement and protection electrical components in the power system, some of which have been put into operation, and have achieved certain economic and social benefits. The biggest difficulty encountered in the practical application of the open current transformer is that the closed-loop iron core itself is cut into two semi-circular rings, which are closed again during use, and there will be a certain air ...

AI Technical Summary

Problems solved by technology

The biggest difficulty encountered in the practical application of the open current transformer is that the closed-loop iron core itself is cut into two semi-circular rings, which are closed again during use, and there will be a certain air gap between the closed contact surfaces. , resulting in a large number of magnetic field lines not closing on the original magnetic circuit of the iron core, resulting in magnetic flux leakage, which greatly reduces the expectation of the transformer for the magnetic permeability that the iron core should have.

The existing open-type current transformer has the defects of unstable performance, large magnetic flux leakage, and poor magnetic permeability

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