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Patent Searching and Data


Title:
EARTHING SWITCH
Document Type and Number:
Japanese Patent JP2014149990
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress the installation space of an earthing switch in which two make and break parts are electrically connected in series in each phase.SOLUTION: In an earthing switch constituted of main circuit side making and breaking parts 2a, 2b, 2c connected with three-phase main circuit conductors 1, and a ground side making and breaking part 3 connected in series with the main circuit side making and breaking parts 2a, 2b, 2c, there are three main circuit side making and breaking parts 2a, 2b, 2c for connection with respective phases, and one ground side making and breaking part 3 for three-phase collective connection. When making or breaking or grounding the main circuit side making and breaking parts 2a, 2b, 2c and the ground side making and breaking part 3 simultaneously, the ground side making and breaking part 3 is closed earlier than the main circuit side making and breaking parts 2a, 2b, 2c, and the ground side making and breaking part 3 is opened later than the main circuit side making and breaking parts 2a, 2b, 2c when making.

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Inventors:
SHIBAYAMA RINA
SATO JUNICHI
TAGAYA OSAMU
Application Number:
JP2013018605A
Publication Date:
August 21, 2014
Filing Date:
February 01, 2013
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
H01H33/42; H01H31/02; H01H31/10; H01H33/52; H01H33/66; H02B13/075
Attorney, Agent or Firm:
Masayuki Sunai
Yasutaka Fujiwara
Yamashita 1