Coil with strong permeability and small partial discharge capacity and production process thereof

Abstract

The invention firstly discloses a coil with strong permeability and small partial discharge capacity and a production process thereof, the coil with strong permeability and small partial discharge capacity comprises a coil layer, an inner isolation layer, an outer isolation layer and a pouring layer, the coil layer surrounds the inner isolation layer, the outer isolation layer surrounds the coil layer, and the pouring layer is arranged on the outer isolation layer. The pouring layer is poured among the coil layer, the inner isolating layer and the outer isolating layer; each of the inner isolation layer and the outer isolation layer comprises a glass fiber grid layer and a glass fiber cloth tape, the glass fiber cloth tape is wound outside the glass fiber grid layer, and a gap is formed between two adjacent circles of glass fiber cloth tapes. According to the coil with strong permeability and small partial discharge capacity and the production process thereof, the problem that bubbles are generated on a pouring layer due to the fact that an isolating layer is made of a whole thin insulating material in the prior art is solved.

Description

technical field [0001] The invention relates to a transformer, in particular to a coil with strong permeability and small partial discharge and a production process thereof. Background technique [0002] The transformer includes a coil, and the coil includes a coil layer. In the prior art, an isolation layer is surrounded inside and outside the coil layer. Then, the coil layer is wound; then, the outer isolation layer is wound; finally, the insulating resin is poured between the isolation layer and the coil layer, and the pouring operation forms the pouring layer. In the above steps, although the coil layers can be shaped and play the role of insulation and isolation, the above steps still have the following disadvantages: [0003] Since the isolation layer is made of a single piece of thin insulating material, the isolation layer is airtight during pouring, and it is easy to generate air bubbles in the pouring layer after pouring, which leads to the subsequent long-term us...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a coil with strong permeability and small partial discharge and its production process, so as to solve the problem of bubbles in the casting layer in the prior art because the isolation layer is made of a monolithic thin insulating material

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