Title:
THREE-PHASE THROUGH-TYPE CURRENT TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2018/055664
Kind Code:
A1
Abstract:
Provided is a three-phase through-type current transformer with which an induction current can be suppressed. The three-phase through-type current transformer comprises three through-type current transformers 10a to 10c that are contained in a single container 3 for converting the magnitude of single-phase current. The through-type current transformers 10a to 10c are provided with annular cores 2a to 2c having single-phase conductors 1a to 1c penetrating through holes therein, and secondary winding wires wound around the annular cores 2a to 2c. The annular cores 2a to 2c include gaps 4a to 4c provided at locations where magnetic saturation occurs due to a magnetic field generated by an accidental current that has flowed through the conductors 1a to 1c penetrating through the other annular cores 2a to 2c, and gaps 5a to 5c provided at equally arranged positions with respect to the locations as base points.
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Inventors:
KATAOKA SEIJI (JP)
IWASAWA TOMOHIDE (JP)
YONEDA MASATO (JP)
IWASAWA TOMOHIDE (JP)
YONEDA MASATO (JP)
Application Number:
PCT/JP2016/077650
Publication Date:
March 29, 2018
Filing Date:
September 20, 2016
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
H01F38/38; G01R15/18; H02B13/035
Foreign References:
| JPH01293512A | 1989-11-27 | |||
| JPS5822970A | 1983-02-10 | |||
| JP2000156327A | 2000-06-06 | |||
| JP2002271923A | 2002-09-20 | |||
| JPS5568604A | 1980-05-23 |
Attorney, Agent or Firm:
KIUCHI, Mitsuharu (JP)
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