Title:
MOLDED TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2022/091447
Kind Code:
A1
Abstract:
Provided is a molded transformer in which the winding structure of the primary winding is improved to increase an impulse resistance characteristic by means of a simple winding scheme. The molded transformer comprises an iron core, a secondary winding covered by molding resin disposed on a leg portion of the core, and a primary winding covered by molding resin disposed on the outside of the secondary winding. In the primary winding, the number of turns of the winding in the radial direction at the upper and lower ends is less than the number of turns of the winding in the radial direction at the central portion, and the thickness of the molding resin covering the outside of the winding at the upper and lower ends is greater than the thickness of the molding resin covering the outside of the winding at the central portion.
Inventors:
MITSUMOTO KOJI (JP)
TAKAHASHI TOSHIAKI (JP)
IOKAWA JUNICHI (JP)
SEKIYA DAIKI (JP)
SATO KOHEI (JP)
SUZUKI ATSUSHI (JP)
TAKAHASHI TOSHIAKI (JP)
IOKAWA JUNICHI (JP)
SEKIYA DAIKI (JP)
SATO KOHEI (JP)
SUZUKI ATSUSHI (JP)
Application Number:
PCT/JP2021/009918
Publication Date:
May 05, 2022
Filing Date:
March 11, 2021
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H01F30/10; H01F27/28; H01F30/12; H01F41/12
Foreign References:
| JP2003158018A | 2003-05-30 | |||
| JPS5373413U | 1978-06-20 | |||
| JPS52145726A | 1977-12-05 | |||
| JPS59145017U | 1984-09-28 |
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
Download PDF: