Method and device for connecting primary conductive terminal for current transformer

Abstract

The invention discloses a primary conductive terminal device for a current transformer, which comprises four primary conductive terminals and a conductive ring C0 (namely an upper pressure ring). The conductive ring is connected with a porcelain sleeve, and the porcelain sleeve is provided with an expander; the four primary conductive terminals are arranged under the conductive ring C0 (the upper pressure ring) and are arranged on the porcelain sleeve embedded with the conductive ring; the third primary conductive terminal P1 and the fourth primary conductive terminal P2 are conventional primary conductive terminals; the first primary conductive terminal C1 and the second primary conductive terminal C2 are aluminum primary conductive terminals and have a split combination structure; the first primary conductive terminal C1 and the second primary conductive terminal C2 comprise a terminal pillar and serial-parallel conductive plates respectively, and the terminal pillar and the serial-parallel conductive plates are connected through a fastener to form a detachable connecting structure; and the terminal pillar and the serial-parallel conductive plates are combined to form the primary conductive terminal with a 7-shaped structure. The primary conductive terminal device solves the problems of oil leakage of the primary terminals and interference discharge of threaded points.

Description

technical field [0001] The invention relates to a connection method, structure and connection of a primary conductive terminal for a high-voltage current transformer, especially a connection method, structure and connection of a primary conductive terminal for a current transformer used in series and parallel, and is a practical technology for high-voltage electrical products field. Background technique [0002] Current transformers use primary conductive terminals, and high-voltage current transformers generally require multiple current ratios, which are realized by connecting primary conductive terminals in series and in parallel. Most of the primary conductive terminals used in the transformer industry in the past used copper terminals, and some also used aluminum terminals, such as Chinese patent number: 00225396.8. These two primary conductive terminals are composed of P1, P2, C1, C2 and other terminals, series-parallel conductive plates and conductive ring C0. The sh...

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to overcome the shortcomings of the primary conductive terminals used in the existing high-voltage current transformers, and propose a non-deformed leakage oil, less disturbing discharge at the tip of the primary terminal, easier processing, excellent performance, and low cost. Inexpensive, easy-to-use primary terminal connection method and device for current transformers

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