Title:
LOADING STATE TAP CHANGER
Document Type and Number:
Japanese Patent JP2021097088
Kind Code:
A
Abstract:
To provide a loading state tap changer capable of reducing the number of electric power sources for turning on a switching switch of a tap.SOLUTION: A loading state tap changer (3) comprises a plurality of switching switches (ThX_U:X=1, 2, 3, 4, A, B, C, and D) for switching a plurality of taps (t1, t2, t3, and t4) held by a winding (212) of a power transformer (2) with each tap, and drives the plurality of switching switches to ON. In each of the plurality of switching switches, one end is connected to any one of the plurality of taps, the one switching switch and the other switching switches excluding one part are connected to the other ends, respectively, and comprises: two first insulation type electric power supplies (321a and 321b) for separately supplying an on-signal to the one part switching switch and the other switching switch, respectively; and first connection circuits (331a and 331b) for selectively connecting each switching switch to which the on signal is supplied from each first electric power supply and each of them.SELECTED DRAWING: Figure 4
Inventors:
MAEDA HIRONOBU
Application Number:
JP2019225793A
Publication Date:
June 24, 2021
Filing Date:
December 13, 2019
Export Citation:
Assignee:
DAIHEN CORP
International Classes:
H01F29/04; G05F1/14; H02J3/12
Domestic Patent References:
| JP2017117084A | 2017-06-29 | |||
| JP2016042279A | 2016-03-31 | |||
| JPS468321B1 | ||||
| JP2014115770A | 2014-06-26 |
Foreign References:
| WO2018070023A1 | 2018-04-19 |
Attorney, Agent or Firm:
Hideno Kono
Nobuo Kono
Nobuo Kono