35 KV voltage class oil immersion composite-type vacuum on-load tap changer

A voltage level, on-load tapping technology, applied in electrical switches, high-voltage/high-current switches, high-voltage air circuit breakers, etc., can solve the problems of rising operating costs, incompatibility with modern management requirements, and increased maintenance workload. Achieve the effect of reducing maintenance costs, reducing normal maintenance costs, and increasing production costs

Inactive Publication Date: 2014-11-19
WUJIANG TAI HENG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original switch can be used normally (periodical oil filtering) in places with low stage voltage, less switching frequency and low current, but in places with high stage voltage, frequent switching and large current, an online oil filter device is required, so that It will increase the operating cost and increase the maintenance workload, which does not meet the requirements of modern management

Method used

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  • 35 KV voltage class oil immersion composite-type vacuum on-load tap changer
  • 35 KV voltage class oil immersion composite-type vacuum on-load tap changer

Examples

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Embodiment Construction

[0021] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] see figure 1 , 2 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time,...

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PUM

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Abstract

The invention provides a 35 KV voltage class oil immersion composite-type vacuum on-load tap changer which comprise an insulation main shaft, a switch cage body, a conductive ring and an insulation moving contact support. The insulation moving contact support is provided with a main moving contact, an auxiliary moving contact, a main vacuum tube and an auxiliary vacuum tube, wherein the main moving contact is electrically connected with one end of the main vacuum tube; and the auxiliary moving contact is electrically connected with one end of the auxiliary vacuum tube. A leading moving contact support is provided with leading moving contacts, wherein the leading moving contacts are electrically connected with the other end of the main vacuum tube and the other end of the auxiliary vacuum tube. A vacuum tube opening and closing mechanism is provided with a lever, wherein the lever makes contact with a raised bench of the conductive ring. The vacuum on-load tap changer has the advantages of safety and durability, low maintenance cost and convenience and adjustable effect and the like.

Description

technical field [0001] The invention relates to a vacuum on-load tap changer, in particular to an oil-immersed composite vacuum on-load tap changer suitable for 35KV voltage level. Background technique [0002] The on-load tap changer is a switching device that provides a constant voltage for the transformer when the load changes. The basic principle is to switch between taps in the transformer winding without interrupting the load current, thereby changing the number of turns of the winding, that is, the voltage ratio of the transformer, and finally realizing the purpose of voltage regulation. In today's power transmission and transformation industry, large transformers are widely installed with on-load tap changers, which play an important role in ensuring the voltage quality of the system and users. At present, most developed countries have installed on-load tap-changers for transformers with a capacity of 10MVA and above, and more and more on-load tap-changing transform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/66H01H1/56H01F29/04
Inventor 屠其荣
Owner WUJIANG TAI HENG ELECTRIC
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