Title:
FAILURE DETECTION DEVICE FOR TAP CHANGER
Document Type and Number:
Japanese Patent JP2019047086
Kind Code:
A
Abstract:
To provide a failure detection device for tap changer capable of detecting a failure on a mechanism part of a tap changer without depending on visual check.SOLUTION: A failure detection device for tap changer in an embodiment is a failure detection device for detecting a failure on a tap changer capable of changing the tap position by means of an electric motor. The failure detection device comprises: a current detection device configured to detect a current flowing to the electric motor and to compare the current to a predetermined threshold value; and a stop command circuit configured so as to, when the current exceeds the predetermined threshold value, generate a shut-off signal for shutting off the operation electric power for the electric motor.SELECTED DRAWING: Figure 1
Inventors:
NAKAMURA KAORU
KUWABARA KOICHIRO
KUWABARA KOICHIRO
Application Number:
JP2017172027A
Publication Date:
March 22, 2019
Filing Date:
September 07, 2017
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND
International Classes:
H01F29/04
Domestic Patent References:
JPS58188017A | 1983-11-02 | |||
JPH01312474A | 1989-12-18 | |||
JPH0837117A | 1996-02-06 | |||
JPH09213542A | 1997-08-15 | |||
JPH04196403A | 1992-07-16 |
Attorney, Agent or Firm:
Masahiko Hinataji
Junichi Kozaki
Hiroshi Ichikawa
Takato Uchida
Junichi Kozaki
Hiroshi Ichikawa
Takato Uchida