SF6 current transformer

Abstract

The invention relates to an SF6 current transformer for the power industry. The SF6 current transformer includes a primary conductive part, a housing, a top plate, an electrode, a secondary wiring tube, a sleeve, and a base; the primary conductive part is arranged in the housing; the top plate and the sleeve are arranged under the housing, wherein the sleeve is connected to the housing; the lower end of the sleeve is connected to the base; the secondary wiring tube passes through the electrode and the sleeve and then is connected to a secondary terminal on the base; and the electrode is of a mouse cage structure. The electrode adopts the mouse cage structure made of an aluminium alloy material, and the service life of the SF6 current transformer can be prolonged; Through ring connection adopted by the electrode, the diameters of all the rings can be designed to be identical or unequal according to an electric field distribution condition and an accuracy requirement, electric field distribution is more even, and the accuracy of the SF6 current transformer can be improved; and the sleeve and the base form a whole structure, such that the SF6 current transformer is easy to process, is convenient to install, and is excellent in sealing performance, and the cost is saved.

Description

technical field [0001] The invention relates to a transformer used in the electric power industry, in particular to an SF6 current transformer. Background technique [0002] After retrieving relevant patent documents, a kind of SF6 current transformer with the same structure as the present invention has not yet been retrieved. The existing SF6 current transformer electrodes generally adopt capacitive screen electrodes and spinning forming electrodes; the capacitive screen electrodes are formed by stacking layers of polyester films. The friction between the parts produces powder, and the protection requirements are high, which brings troubles to the production and increases the manufacturing cost; the spinning forming electrode is made by the spinning forming method. Although the structure is simple, there are only A circular arc has no obvious effect on the uniform product electric field, and the failure rate is high, so it is necessary to improve the structure of the exist...

AI Technical Summary

Problems solved by technology

The existing SF6 current transformer electrodes generally adopt capacitive screen electrodes and spinning forming electrodes; the capacitive screen electrodes are formed by stacking layers of polyester films. The friction between the parts produces powder, and the protection requirements are high, which brings troubles to the production and increases the manufacturing cost; the spinning forming electrode is made by the spinning forming method. Although the structure is simple, there are only A circular arc has no obvious effect on the uniform product electric field, and the failure rate is high, so it is necessary to improve the structure of the existing SF6 current transformer to meet the actual needs of existing production

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