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Patent Searching and Data


Title:
SWITCHGEAR
Document Type and Number:
Japanese Patent JP2017208157
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To solve the problems in which: in a switchgear, arc occurs when a movable contact is separated from a fixed contact so that magnetic field line generated from a magnet is guided by a suction rod to generate an interlinkage magnetic field from the tip of the suction rod to the arc so as to drive the arc; and the reaction force thereof is transmitted to a cover protector supporting the suction rod, thereby shifting the cover protector in vertical and horizontal directions so that the tip of the suction rod is moved and the interlinkage magnetic field driving the arc is changed to deteriorate the cutoff performance by magnetic suction force deterioration.SOLUTION: In a switchgear, an insulation cover protector holding a suction rod comprises: a cover part covering a part of the suction rod and a magnet; a protrusion extending upward; and a connection part connecting the cover part with the protrusion. The protrusion is constructed contacting with a rib arranged in a housing.SELECTED DRAWING: Figure 4

Inventors:
SAITO SHUNSUKE
Application Number:
JP2016097563A
Publication Date:
November 24, 2017
Filing Date:
May 16, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H01H9/36; H01H9/44; H01H73/18
Attorney, Agent or Firm:
Masuo Oiwa
Takenaka Ikuo
Keigo Murakami
Kenji Yoshizawa