Winding method for primary winding of voltage transformer coil

Abstract

The invention discloses a winding method for a primary winding of a voltage transformer coil, and belongs to the technical field of high-voltage electric appliance coil manufacturing. The method specifically comprises the following steps that a guide device is arranged on a micro-control or numerical control parallel winding machine; enameled flat copper wires are wound on the periphery of an insulation framework through the guide device, one circle of single enameled flat copper wire is wound into one turn from the first layer, a certain number of turns is wound on each layer, interlayer insulation paper is additionally arranged after the winding of the layer is finished, then the next layer of turns is wound again, and so on until the winding of the last layer of turns is finished. The enameled flat copper wire is adopted for winding, under the condition that the number of turns of the coil and the area of the wire diameter are not changed, the number of turns of each layer is reduced, the number of layers is increased, the interlayer distance is reduced, the outer diameter of the winding is decreased, the primary coil interlayer field intensity is reduced, the coil outer field intensity is smaller, and therefore the purpose that the product partial discharge capacity is small is achieved.

Description

technical field [0001] The invention relates to the technical field of high-voltage electrical coil manufacturing, in particular to a method for winding a primary winding of a voltage transformer coil. Background technique [0002] At present, the primary winding of voltage transformers in the transformer industry is generally wound with enamelled round copper wires. It has more than 50 years of production experience in my country. With the continuous development of advanced machinery and equipment, the coil winding manufacturing process is also constantly improving. Compared with the mature enamelled round copper wire winding, there are still some imperfections in the technical process, that is, the number of turns of the primary winding is large, the outer diameter is large, the distance between layers is large, and the field strength between layers is high, which is mainly manifested in the number of turns per layer. The electric field strength is too concentrated, the fiel...

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Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a winding method for the primary winding of a voltage transformer coil to solve the problem that the existing voltage transformer primary winding has many turns per layer, the electric field strength is too concentrated, the field strength difference between layers is large, and the design The problem of small parameter capacity

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