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Vacuum switchgear

A technology of vacuum switches and switches, which is applied in the direction of electric switches, grounding switches, high-voltage/high-current switches, etc., can solve the problems of reduced withstand voltage performance and huge impact on machines, and achieve the goal of improving reliability and ground insulation performance Effect

Inactive Publication Date: 2012-07-18
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned multi-circuit type vacuum switchgear has the function of interchangeable connection with the capacity change of the demand side, etc., but if the withstand voltage performance of the vacuum switchgear is reduced, it will greatly affect the equipment on the downstream side.

Method used

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Embodiment Construction

[0027] In addition, the vacuum switchgear of the present invention is a multi-circuit type vacuum switchgear equipped with a plurality of main circuit switches in a single container, and is characterized in that each of the above-mentioned main circuit switchers includes a fixed electrode and a pole connected thereto. The main circuit switch parts of the movable electrodes are respectively stored in non-grounded vacuum containers, and the above-mentioned movable electrodes are connected with flexible conductors, and the movable side operation rod is introduced into the above-mentioned non-grounded vacuum container and passed through the insulator. It is respectively connected to each of the above-mentioned movable electrodes, equipped with a first insulating part on the outer periphery of the above-mentioned vacuum container that insulates the above-mentioned main circuit switch part and the sleeve conductor connected to the above-mentioned fixed electrode, and integrally formed...

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Abstract

The invention aims to provide a multi-circuit type vacuum switchgear with improved ground isolation reliability. The vacuum switchgear mechanism comprises a non-earthed vacuum chamber or chambers, plural main circuit switches each having a fixed electrode and a movable electrode in a non-earthed vacuum chamber, bushing conductors connected to fixed electrodes and extending outward from the non-earthed vacuum chamber, earthing switches corresponding to the main circuit switches and each having an electric contact encased in the vacuum chamber or the air chamber for the earthing switch, air-insulated rods connected to the corresponding movable electrodes of the main circuit switches for transferring movement of an operating mechanism, an earthed resin mold casing that air-tightly surrounds the non-earthed vacuum chamber, the bushing conductors and the vacuum chambers or air chambers of the earthing switches, and a lid air-tightly closing the top of the mold casing.

Description

technical field [0001] The present invention relates to a vacuum switchgear, and more particularly to a multi-circuit type vacuum switchgear provided with a plurality of switches in a container. Background technique [0002] A multi-circuit type vacuum switchgear is installed and used in a wiring system, for example, to distribute power to a demand side. As such a vacuum switch mechanism, a plurality of switch devices are provided in the container. [0003] Patent Document 1 (Japanese Unexamined Patent Publication No. 2006-238522) discloses a vacuum switch mechanism having a structure in which: a molded portion in which a conductor connected to a fixed electrode side of a switch is molded with resin; The fixed electrode and the switch of the movable electrode that can be connected to and separated from the vacuum container are arranged on the above-mentioned molding part. [0004] Patent Document 2 (Japanese Unexamined Patent Publication No. 2000-306474) discloses a switch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/66
CPCH01H33/66207H01H31/003H01H2033/6668H01H1/5822H01H33/6661H01H33/66
Inventor 佐藤隆土屋贤治
Owner HITACHI LTD