Casting type split reactor

Abstract

The invention discloses a casting type split reactor. A coil of the casting type split reactor comprises a first winding and a second winding which are arranged coaxially, and encapsulation parts of the first winding and encapsulation parts of the second winding are arranged alternatively from inside to outside in sequence. A first wire inlet bar and a second wire outlet bar are arranged at an interval radially and fixed at the upper end of the coil, and the other first wire inlet bar and a first wire outlet bar are arranged at an interval radially, connected with a current introducing end of the second winding in a conductive mode and fixed at the lower end of the coil. Each encapsulation part comprises a conductive part formed by winding a plurality of multi-layer round leads, and an insulation part formed by casting epoxy resin in a vacuum mode is arranged outside the conductive part. According to the casting type split reactor, the encapsulation parts are formed by casting epoxy resin in the vacuum mode through a casting mould, consistency of sizes of the insulation layers can be ensured, and uneven thicknesses of the insulation layers are avoided. In addition, no bubbles exist in the windings, partial discharge is reduced, occurrence of air gaps can be avoided effectively, and therefore, insulation performance of the insulation layers can be improved.

Description

technical field [0001] The invention belongs to the field of electrical technology, and in particular relates to a casting type split reactor. Background technique [0002] Reactors are also called inductors, which essentially provide inductance values ​​in electrical circuits. Current-limiting reactors are used to limit short-circuit currents. Since air-core reactors do not have core saturation problems and have good linearity, current-limiting reactors are generally used With a hollow structure. Split reactor is a kind of current-limiting reactor. It is a current-limiting reactor with one input terminal and two output terminals. Compared with the current-limiting reactor of ordinary single winding, it has normal The voltage loss is small during operation, and the short-circuit current resistance is large. [0003] At present, the conventional split reactor is a dry-type air-core reactor with upper and lower double winding structure, and the whole adopts resin insulation ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a casting type split reactor to solve the problems of air bubbles in the insulation winding of existing air-core reactors and general insulation performance

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