Title:
TAP SWITCHING DEVICE
Document Type and Number:
Japanese Patent JP2018160495
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that the life of a tap switching device using a mechanical relay is short, and the tap switching device is vulnerable to vibration and mechanical shock.SOLUTION: The tap switching device comprises: a motor 11 for tap switching that rotates in a first direction when AC power is supplied to a first terminal and rotates in a second direction when the power is supplied to a second terminal; a rectification circuit 14 for outputting a first command signal when rotating the motor 11 in the first direction; a rectification circuit 15 for outputting a second command signal when rotating the motor 11 in the second direction; a switching circuit 12, constituted using a semiconductor element, for controlling the supply of single-phase AC power to the first terminal in accordance with the first command signal; and a switching circuit 13, constituted using a semiconductor element, for controlling the supply of single-phase AC power to the second terminal in accordance with the second command signal. Due to the fact that the switching circuits 12, 13 are constituted by a semiconductor element, it is possible to extend the life longer than for the case where a mechanical relay is used, and intensity resistance to vibration and mechanical shock.SELECTED DRAWING: Figure 1
Inventors:
MAEDA HIRONOBU
Application Number:
JP2017055514A
Publication Date:
October 11, 2018
Filing Date:
March 22, 2017
Export Citation:
Assignee:
DAIHEN CORP
International Classes:
H01F29/04; H02J3/12
Attorney, Agent or Firm:
Hidekazu Tanikawa
Morimoto Sudo
Morimoto Sudo