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Blade-shaped circuit breaker

A circuit breaker and blade-shaped technology, which is applied in the field of blade-shaped circuit breakers, can solve the problems of reduced insulation performance, large overall size, and difficulty in miniaturization, etc., and achieve the effect of improving electrical performance and increasing the electrical contact surface

Active Publication Date: 2012-11-28
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In this way, if the electric field value between the fixed-side electrode and the pole of the movable blade becomes high and the electric field cannot be sufficiently relaxed, the insulation performance may be significantly lowered, and the withstand voltage performance of the blade-shaped circuit breaker may be deteriorated.
[0009] In order to prevent deterioration of the withstand voltage performance of the blade-shaped circuit breaker, there is a problem that the overall size of the metal container and the inter-electrode size including the fixed-side electrode and the movable blade must be large, and it is difficult to miniaturize

Method used

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  • Blade-shaped circuit breaker
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  • Blade-shaped circuit breaker

Examples

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Embodiment 1

[0024] figure 1 The illustrated blade-shaped circuit breaker is arranged such that a pair of power transmission conductors 10 and 10A are arranged facing each other in a metal container 1 enclosed in an insulating gas or in the atmosphere. On the end surface of the one power transmission conductor 10, a fixed-side electrode 11 is provided, and the fixed-side electrode 11 passes through figure 2 Screws 14 etc. are shown to fasten the contact piece 12 with the flat electrical contact surface 13 . Furthermore, the movable vane 15 is provided on the end surface of the other power transmission conductor 10A so as to be foldable.

[0025] The movable vane 15 is connected by the rotary lever 18 fixed on the externally operated rotary shaft 17 and the operating rod 19, and is connected to and disconnected from the fixed side electrode 11 as the rotary shaft 17 rotates clockwise and counterclockwise. .

[0026] Also, inside the metal container 1, the ground side electrode 16 is pr...

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Abstract

The present invention relates to a blade-shaped circuit breaker, for moderating an electric field between a fixed side electrode and an electrode of a movable blade, capable of improving electroinsulating property and implementing miniaturization. The blade-shaped circuit breaker is provided with a pair of power transmission conductors (10, 10A) opposite with each other in a metal container (1). One power transmission conductor (10) is provided with a fixed side electrode (11) for fastening a contact piece (12) having an electrolinking surface (13), the other power transmission conductor (10A) is provided with a movable blade (15) rotatably. A grounding side electrode (16) connected and separated with the movable blade (15) is arranged around the fixed side electrode (11) in the metal container (1). The electrolinking surface (13) of the fixed side electrode (11) is formed asymmetrically, such that a curvature radius R1 of electrodes-between side of the electrolinking surface connected and separated with the movable blade (15) is larger than a curvature radius R2 of grounding side of the electrolinking surface opposite to the inner of the metal container (1). The problem is solved.

Description

technical field [0001] The present invention relates to a vane circuit breaker, and more particularly to a vane circuit breaker called a three-position system in which a fixed-side electrode and a ground-side electrode are switched by a movable vane. Background technique [0002] Generally, a gas insulated switchgear (hereinafter referred to as "GIS") is composed of devices such as a circuit breaker, a circuit breaker, and a grounding switch. The circuit breaker with grounding switch used in GIS adopts the integrated structure of grounding switch and circuit breaker in the metal container. [0003] As described in Japanese Patent Laid-Open Publication No. 2006-216448 (Patent Document 1), a movable blade serving as a movable side electrode is used as a circuit breaker with a grounding switch. The movable vane is rotatably installed on one power transmission conductor to become a movable side electrode, and then a fixed side electrode is installed on the other power transmiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H31/02H01H31/28H01H1/06
CPCH01H31/02H01H31/28H01H31/32H01H33/02H01H33/42
Inventor 濑谷良明藤泽力井波义昭
Owner HITACHI LTD
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