Connection terminal for voltage transformer

Abstract

The invention provides a connection terminal for a voltage transformer. The connection terminal comprises an epoxy resin insulator and a conductive insert embedded in the epoxy resin insulator, wherein the conductive insert embedded in the epoxy resin insulator consists of an inner insert, an outer insert, a connecting plate, a first nut and a second nut; the inner insert is fixedly connected with one end of the connecting plate through the first nut; the outer insert is fixedly connected with the other end of the connecting plate through the second nut. According to the connection terminal, the inner and outer inserts are fixedly connected through the connecting plate, and are positioned on different contours, and the phenomenon of loosening even though a gap is formed between the conductive insert and the insulator is avoided, so that the problem of loosening of the conductive insert is radically solved, the stability and the reliability of a product are improved, and the service life of the product is prolonged.

Description

Technical field [0001] The invention relates to a connection terminal for a high voltage transformer. Background technique [0002] In the existing production process, the secondary wiring terminals for high-voltage transformers are made of epoxy resin. A certain number of brass conductive rod inserts and epoxy resin insulation materials are bonded together to ensure that the conductive rods The insert and the epoxy resin insulation material have sufficient bonding strength to prevent the conductive rod insert from rotating in the epoxy resin. The company’s previous patent number: 201320011046.4, the invention patent named "Secondary terminal for high-voltage current transformer" discloses a secondary terminal for high-voltage current transformer. The content is that it is on a brass conductive rod. Two annular grooves are set on the insert to increase the bonding area between the insert and the epoxy resin. Although the patent has improved the loosening of conductive rod inser...

AI Technical Summary

Problems solved by technology

Although this patent has improved the loosening problem between the conductive rod insert and the epoxy resin material, it still cannot completely avoid the loosening problem. Due to the use of a conductive rod insert, the shrinkage rate of the brass conductive rod insert is the same as that of the epoxy resin material. The shrinkage rate of resin materials is different. Due to thermal expansion and cold contraction, the above technical problems cannot be fundamentally solved.

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