Opening and closing type zero sequence current mutual inductor

Abstract

The invention relates to a mutual inductor, which discloses an opening and closing type zero sequence current mutual inductor. The opening and closing type zero sequence current mutual inductor comprises a base and a pouring body arranged on the base, wherein the inside of the pouring body is provided with an annular iron core; the pouring body comprises a first pouring body and a second pouring body, wherein the first pouring body is positioned on the upper part; the second pouring body is positioned on the lower part; the first pouring body and the second pouring body are semicircular; the first pouring body and the second pouring body are subjected to butt joint to form a circular ring shape; the outer circumference surfaces of the first pouring body and the second pouring body are provided with a clamping hoop; and the first pouring body and the second pouring body are connected into a whole by the clamping hoops. The opening and closing type zero sequence current mutual inductor disclosed by the invention has the advantages of compact structure, small size, small consumable use amount, light weight, convenience in installation and use and higher economic practicality and popularization value.

Description

technical field [0001] The invention relates to a transformer, in particular to a split type zero-sequence current transformer. Background technique [0002] At present, the zero-sequence current transformers used in the zero-sequence overcurrent protection of high-voltage three-phase generators and motors in power systems and the grounding protection of small grounding current systems are all closed products. Small switch cabinets cannot be installed in, and it is more troublesome to install zero-sequence protection for cables that have been connected at both ends. It is a lot of work and difficult to pull out one end of the cable to pass through the transformer. Contents of the invention [0003] Aiming at the defects in the prior art, the invention provides a split type zero-sequence current transformer with compact structure, small volume, less consumption of consumables, light weight and more convenient installation and use. [0004] In order to solve the above techn...

AI Technical Summary

Problems solved by technology

[0002] At present, the zero-sequence current transformers used in the zero-sequence overcurrent protection of high-voltage three-phase generators and motors in power systems and the grounding protection of small grounding current systems are all closed products. Small switch cabinets cannot be installed, and it is more troublesome to install zero-sequence protection on cables that have been connected at both ends. It is a lot of work and difficult to pull out one end of the cable to pass through the transformer.

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