Abnormality detection method for vacuum valve for switching switch of tap changer under load

Title:

Abnormality detection method for vacuum valve for switching switch of tap changer under load

Document Type and Number:

Japanese Patent JP6308835

Kind Code:

B2

Inventors:

Gohei Tsujimoto

Application Number:

JP2014068635A

Publication Date:

April 11, 2018

Filing Date:

March 28, 2014

Export Citation:

Assignee:

Daihen Co., Ltd.

International Classes:

H01F29/04; H01F29/02

Domestic Patent References:

Attorney, Agent or Firm:

Shinichi Kikuchi
Toru Kikuchi
Hidetoshi Matsumoto

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