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Contactor component of vacuum breaker

A technology for vacuum circuit breakers and contactors, applied in high-voltage air circuit breakers, scattered finger contacts, circuits, etc., can solve the problems of degradation and damage of main circuit terminals and contactor fingers

Active Publication Date: 2009-07-15
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can lead to degradation and damage to the main circuit terminals and contactor fingers, and possible serious electrical accidents

Method used

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  • Contactor component of vacuum breaker
  • Contactor component of vacuum breaker
  • Contactor component of vacuum breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Referring now to the accompanying drawings, a detailed description of the present invention will be given.

[0022] figure 1 It is an exploded perspective view of a main circuit terminal and a contactor assembly of a vacuum circuit breaker according to the present invention.

[0023] exist figure 1 With reference to , the state of use of the contactor assembly of the vacuum circuit breaker according to the present invention will be described.

[0024] refer to figure 1 , reference numeral 1 denotes a main circuit terminal in a vacuum circuit breaker. The main circuit terminal includes: a bus bar portion 1a configured to have a plate-like electrical conductor connected to a main circuit portion (not shown) by connecting means such as bolts; an electric conductor from which the busbar portion extends; and a tubular end portion 1c integrally formed at the end of the columnar extension portion 1b and having an enlarged diameter. Herein, the tubular end 1c comprises: a ...

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PUM

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Abstract

The present invention discloses a contactor assembly which is used for vacuum circuit breaker and can prevent the increase of contact resistance caused by vibration and has a tulip shape. The contactor assembly used for vacuum circuit breaker is installed on the terminal of main circuit for connecting the terminal of main circuit with the terminal of bracket. The contactor assembly comprises the following components: a contactor plate which is fixedly connected with the terminal of main circuit; a plurality of contactor fingers which are concentrically installed; a supporting board which is provided with a plurality of teeth parts on the external surface and valley parts used for fixing the contactor fingers between the teeth parts; and a plurality of annular springs which are used for providing the elastic pressure to the contactor fingers. Each contactor finger comprises an electric conductor plate which comprises the following components: a first projection contacting with the terminal of main circuit, a second projection contacting with the terminal of bracket, and a planar part between the first projection and the second projection. Furthermore the electric conductor plate is constructed that the electric conductor plate is movable relatively to the conductor plate when vibration occurs for preventing the increase of contact resistance caused by the contact to the terminal of main circuit.

Description

[0001] related application [0002] This disclosure is related to subject matter contained in the priority of Korean Application No. 10-2007-0139297 filed on Dec. 27, 2007, the entire contents of which are hereby expressly incorporated by reference. technical field [0003] The present invention relates to a vacuum circuit breaker, and more particularly to a contactor assembly for a vacuum circuit breaker capable of preventing an increase in contact resistance between a contactor finger and a terminal of a main circuit due to vibration. Background technique [0004] Generally, a vacuum circuit breaker is an electrical switch designed to make and break a circuit supplied with high voltage in an electrical system. Vacuum circuit breakers are also used to protect electrical circuits from overloading or accidental short circuits due to automatic shut-off of said circuits. [0005] A vacuum circuit breaker includes a main circuit portion and a cradle. The main circuit part incl...

Claims

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Application Information

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IPC IPC(8): H01H33/664
CPCH01H3/60H01H33/6606H01H2203/02H01H2239/032H02B11/127H02B13/0354
Inventor 李在容
Owner LSIS CO LTD
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