JPS644006A - Resin-molded coil - Google Patents

Resin-molded coil

Info

Publication number
JPS644006A
JPS644006A JP62157634A JP15763487A JPS644006A JP S644006 A JPS644006 A JP S644006A JP 62157634 A JP62157634 A JP 62157634A JP 15763487 A JP15763487 A JP 15763487A JP S644006 A JPS644006 A JP S644006A
Authority
JP
Japan
Prior art keywords
coil
permittivity
primary coil
secondary coil
resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62157634A
Other languages
Japanese (ja)
Other versions
JPH0666203B2 (en
Inventor
Hirobumi Kubo
Takashi Igarashi
Kiyoshi Nishikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62157634A priority Critical patent/JPH0666203B2/en
Publication of JPS644006A publication Critical patent/JPS644006A/en
Publication of JPH0666203B2 publication Critical patent/JPH0666203B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Insulating Of Coils (AREA)

Abstract

PURPOSE:To improve the insulating performance between a primary coil and a secondary coil and to realize a small-sized coil by a method wherein a spacer piece is installed between the primary coil and the secondary coil and the spacer piece is composed of an insulating material whose permittivity is close to the permittivity of air. CONSTITUTION:For a resin molded coil 1, a primary coil 2 used as a high- voltage coil is wound at the outside of a secondary coil 3 used as a low-voltage coil, and rod ducts 4 as spacer pieces are installed between the primary coil 2 and the secondary coil 3. The rod ducts 4 are composed of an insulating material whose permittivity is close to the permittivity of the air. The spacer pieces are formed by a resin 14; nearly spherical and fine hollow substances 12 as fillers composed of glass are mixed with an epoxy resin 10. Because a number of gaps composed of the fine hollow substances 12 are contained inside the rod ducts 4, an electric field is divided nearly equally into a number of gaps formed by the fine hollow substances 12 and voids even when the voids are produced at contact faces between the rod ducts 4 and the primary coil 2 and the secondary coil 3. Accordingly, it is possible to prevent the electric field from being concentrated on the voids.
JP62157634A 1987-06-26 1987-06-26 Resin mold coil Expired - Lifetime JPH0666203B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62157634A JPH0666203B2 (en) 1987-06-26 1987-06-26 Resin mold coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62157634A JPH0666203B2 (en) 1987-06-26 1987-06-26 Resin mold coil

Publications (2)

Publication Number Publication Date
JPS644006A true JPS644006A (en) 1989-01-09
JPH0666203B2 JPH0666203B2 (en) 1994-08-24

Family

ID=15654007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62157634A Expired - Lifetime JPH0666203B2 (en) 1987-06-26 1987-06-26 Resin mold coil

Country Status (1)

Country Link
JP (1) JPH0666203B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007157987A (en) * 2005-12-05 2007-06-21 Aichi Electric Co Ltd Transformer winding
JP2008021790A (en) * 2006-07-12 2008-01-31 Mitsubishi Electric Corp Resin mold transformer
JP2008066564A (en) * 2006-09-08 2008-03-21 Mitsubishi Electric Corp Resin mold transformer
JP2009026951A (en) * 2007-07-19 2009-02-05 Mitsubishi Electric Corp Molded coil
WO2023042256A1 (en) * 2021-09-14 2023-03-23 三菱電機株式会社 Stationary inductor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549791A (en) * 1977-06-23 1979-01-24 Mitsubishi Electric Corp Production of molded electric apparatus
JPS58123704A (en) * 1982-01-20 1983-07-23 Toshiba Corp Molded coil impregnated with resin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549791A (en) * 1977-06-23 1979-01-24 Mitsubishi Electric Corp Production of molded electric apparatus
JPS58123704A (en) * 1982-01-20 1983-07-23 Toshiba Corp Molded coil impregnated with resin

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007157987A (en) * 2005-12-05 2007-06-21 Aichi Electric Co Ltd Transformer winding
JP2008021790A (en) * 2006-07-12 2008-01-31 Mitsubishi Electric Corp Resin mold transformer
JP2008066564A (en) * 2006-09-08 2008-03-21 Mitsubishi Electric Corp Resin mold transformer
JP2009026951A (en) * 2007-07-19 2009-02-05 Mitsubishi Electric Corp Molded coil
WO2023042256A1 (en) * 2021-09-14 2023-03-23 三菱電機株式会社 Stationary inductor

Also Published As

Publication number Publication date
JPH0666203B2 (en) 1994-08-24

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