Dry-type voltage inductor for metering cart user

A technology for voltage transformers and users, applied in the direction of inductors, voltage dividers, transformers, etc., can solve the problems of many quality control points, complicated maintenance, uncompact structure, etc., and achieve safe operation, flexible installation, compact and reasonable structure Effect

Active Publication Date: 2008-11-19
DALIAN NORTH INSTR TRANSFORMER GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the disadvantages of uncompact structure, cumbersome maintenance and many quality control points in the dry-type voltage transformer in the metering handcart user in the prior art, the purpose of the present invention is to provide a metering system integrating various functional components. Indoor dry-type voltage transformer for handcart users

Method used

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  • Dry-type voltage inductor for metering cart user
  • Dry-type voltage inductor for metering cart user
  • Dry-type voltage inductor for metering cart user

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Embodiment Construction

[0018] Such as Figure 2-4 As shown, the present invention includes an iron core 1, a primary winding 2, a secondary winding 3, a primary contact arm terminal 4 and a secondary terminal block 5, and adopts epoxy resin casting as an integrated structure, and also has a fuse 9, which is located in the above-mentioned integral body. In the fuse cavity inside the type structure, it is electrically connected between the primary winding 2 and the primary contact arm terminal 4; there is a primary lightning arrester terminal 6, which is embedded in the above-mentioned integrated structure, and is connected to the primary contact arm terminal inside the integrated structure. 4. Electrical connection; the end of the high-voltage insulating column 7 that seals the primary contact arm terminal 4 is in the shape of a concave truncated cone; It is provided with a concave stop (the cross section is trapezoidal); the secondary terminal block 5 of the sealed secondary terminal 8 is a cuboid p...

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Abstract

The invention relates to an indoor dry voltage transformer for a metering handcart, comprising an iron core, a primary winding, a secondary winding, a first contact arm terminal and a secondary wire holder, which are cast into an integral structure. The indoor dry voltage transformer further comprises a fuse which is arranged in a fuse chamber inside the integral structure and is electrically connected between the primary winding and the first contact arm terminal, and a lightning arrester connection terminal which is embedded on the integral structure and is electrically connected with the first contact arm terminal inside the integral structure. The end of the high-voltage insulating column of the first contact arm terminal is a concave cylinder. The indoor dry voltage transformer is small in occupying area, flexible to install, stable in insulation and is easy to maintain and is provided with protection from the fuse and the first contact arm terminal, thus realizing a metering handcart which is simple and economic and is reliable in insulation, safe to operate and easy to maintain.

Description

technical field [0001] The invention relates to a high-voltage measuring device in an electric power system, in particular to an internal dry-type voltage transformer for users of metering handcarts. Background technique [0002] Potential transformers are equipment for measuring voltage and electric energy in power systems or electrical control systems. In order to realize the miniaturization of switchgear and facilitate maintenance, voltage transformers are usually assembled into the form of metering handcarts, such as Figure 1A , 1B As shown, it is mainly composed of chassis car 18, voltage transformer 20, insulating support 21, external fuse 23, insulating sheath 22, lightning arrester 19, contact arm 25, plum blossom contact 26, secondary plug seat 24 and other functional components. The interconnection sequence and main functions of each component are as follows: the chassis 18 constitutes the overall structural frame of the metering handcart, and its related installa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/24H01F27/40G01R15/06
Inventor 李涛昌王仁焘欧希堂宋仁丰郝桃武金忠超王亮赵日东
Owner DALIAN NORTH INSTR TRANSFORMER GROUP
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