Title:
INSULATION TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2008/075487
Kind Code:
A1
Abstract:
This invention provides a transformer having such properties that the iron loss
in a capacitance-iron loss characteristic curve (1) is not less than 4.85 Œ
(capacitance(kVA))0.613(W) and not more than 27.3 Π(capacitance(kVA))0.613(W),
and, even when a superimposed current comprising a rated current on which not
less than 1% of a direct current component has been superimposed, is input, magnetic
saturation does not take place. An iron core (3) is formed of a noncrystalline
metallic material. The iron core (3) is annealed while applying a magnetic field
in any desired direction by an externally disposed solenoid coil (11). In the
iron core (3), the axis of easy magnetization is not horizontal to the direction
of excitation by a winding wire in the assembly of the transformer.
Inventors:
YAMAGUCHI, Hidemasa (46-1, Tomioka, Tainai-sh, Niigata 08, 9592608, JP)
山口 英正 (〒08 新潟県胎内市富岡４６番地１ 株式会社 日立産機システム内 Niigata, 9592608, JP)
HOSOKAWA, Masao (46-1, Tomioka, Tainai-sh, Niigata 08, 9592608, JP)
山口 英正 (〒08 新潟県胎内市富岡４６番地１ 株式会社 日立産機システム内 Niigata, 9592608, JP)
HOSOKAWA, Masao (46-1, Tomioka, Tainai-sh, Niigata 08, 9592608, JP)
Application Number:
JP2007/067739
Publication Date:
June 26, 2008
Filing Date:
September 12, 2007
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd. (3 Kanda Neribeicho, Chiyoda-ku Tokyo, 22, 1010022, JP)
株式会社 日立産機システム (〒22 東京都千代田区神田練塀町３番地 Tokyo, 1010022, JP)
YAMAGUCHI, Hidemasa (46-1, Tomioka, Tainai-sh, Niigata 08, 9592608, JP)
山口 英正 (〒08 新潟県胎内市富岡４６番地１ 株式会社 日立産機システム内 Niigata, 9592608, JP)
株式会社 日立産機システム (〒22 東京都千代田区神田練塀町３番地 Tokyo, 1010022, JP)
YAMAGUCHI, Hidemasa (46-1, Tomioka, Tainai-sh, Niigata 08, 9592608, JP)
山口 英正 (〒08 新潟県胎内市富岡４６番地１ 株式会社 日立産機システム内 Niigata, 9592608, JP)
International Classes:
H01F30/12; H01F27/24; H01F30/00; H01F41/02; H01F30/06; H01F27/24; H01F30/00; H01F41/02
Attorney, Agent or Firm:
ASAMURA, Kiyoshi et al. (Room 331, New Ohtemachi Bldg.2-1, Ohtemachi 2-chom, Chiyoda-ku Tokyo 04, 1000004, JP)
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