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Patent Searching and Data


Title:
CONTROL CIRCUIT FOR OPERATION DEVICE FOR SWITCH
Document Type and Number:
Japanese Patent JPH11111094
Kind Code:
A
Abstract:

To correctly actuate all of operation devices for three phases in the case where an operation condition changing switch such as a shutter switch has chattering in the operation device for one phase without giving bad effects for operation of the operation devices of the other phases.

Shutter switches 3 for three phases are serially connected to be composed in such a way that they cannot be electrically operated unless the operation by a motor is enabled for all of operation devices for the three phases. To each of the shutter switches 3 for three phases, each charge side relay contact 4 and a breaking side relay contact 5 are respectively connected in parallel. Otherwise, to both ends of the shutter switches 3 for three phases, charge side relay contacts 4 and breaking side relay contacts 5 are totally connected in parallel. Or otherwise, instead of the relay contacts 4, 5, mechanical contacts such as action recognition contacts or auxiliary contacts which are opened/closed corresponding to action of main shafts of the operation devices are connected.


More Like This:
WO/2015/177144SHIFTING DEVICE
Inventors:
Ozaki, Hiroshi
Application Number:
JP1997000276051
Publication Date:
April 23, 1999
Filing Date:
October 08, 1997
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
H01H5/04; H01H33/59; (IPC1-7): H01H5/04; H01H33/59
Attorney, Agent or Firm:
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