FR2307355A1 - High voltage transformer with coolant oil duct - lined with non-woven felt of fibres of terephthalate (co)polyester of ethylene glycol and/or propane diol - Google Patents

High voltage transformer with coolant oil duct - lined with non-woven felt of fibres of terephthalate (co)polyester of ethylene glycol and/or propane diol

Info

Publication number
FR2307355A1
FR2307355A1 FR7511259A FR7511259A FR2307355A1 FR 2307355 A1 FR2307355 A1 FR 2307355A1 FR 7511259 A FR7511259 A FR 7511259A FR 7511259 A FR7511259 A FR 7511259A FR 2307355 A1 FR2307355 A1 FR 2307355A1
Authority
FR
France
Prior art keywords
fibres
polyester
ethylene glycol
propane diol
lined
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
FR7511259A
Other languages
French (fr)
Other versions
FR2307355B1 (en
Inventor
Francois Abgrall
Fernand Viale
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.)
Alstom Savoisienne SA
Original Assignee
Alstom Savoisienne SA
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 Alstom Savoisienne SA filed Critical Alstom Savoisienne SA
Priority to FR7511259A priority Critical patent/FR2307355A1/en
Publication of FR2307355A1 publication Critical patent/FR2307355A1/en
Application granted granted Critical
Publication of FR2307355B1 publication Critical patent/FR2307355B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)

Abstract

The transformer has a series of electrical windings around e.g. a central insulating support and a channel for circulating cooling oil through the windings. The channel is delimited by layers of an insulating solid felt formed from fibres of a (co)polyester of terephthalic acid and ethylene glycol and/or propane diol. The insulating felt absorbs the oil and has a permittivity close to that of the oil, thereby reducing dielectric losses. For the same thickness of conventional insulation the voltage across the windings can be increased. The felt is strong.
FR7511259A 1975-04-10 1975-04-10 High voltage transformer with coolant oil duct - lined with non-woven felt of fibres of terephthalate (co)polyester of ethylene glycol and/or propane diol Granted FR2307355A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7511259A FR2307355A1 (en) 1975-04-10 1975-04-10 High voltage transformer with coolant oil duct - lined with non-woven felt of fibres of terephthalate (co)polyester of ethylene glycol and/or propane diol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7511259A FR2307355A1 (en) 1975-04-10 1975-04-10 High voltage transformer with coolant oil duct - lined with non-woven felt of fibres of terephthalate (co)polyester of ethylene glycol and/or propane diol

Publications (2)

Publication Number Publication Date
FR2307355A1 true FR2307355A1 (en) 1976-11-05
FR2307355B1 FR2307355B1 (en) 1979-06-08

Family

ID=9153760

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7511259A Granted FR2307355A1 (en) 1975-04-10 1975-04-10 High voltage transformer with coolant oil duct - lined with non-woven felt of fibres of terephthalate (co)polyester of ethylene glycol and/or propane diol

Country Status (1)

Country Link
FR (1) FR2307355A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730233A (en) * 2013-12-25 2014-04-16 保定天威保变电气股份有限公司 Inter-frame oil duct structure for large-sized transformer framed cores

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711807A (en) * 1970-07-12 1973-01-16 Northern Ind & Mfg Inc A molded coil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711807A (en) * 1970-07-12 1973-01-16 Northern Ind & Mfg Inc A molded coil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730233A (en) * 2013-12-25 2014-04-16 保定天威保变电气股份有限公司 Inter-frame oil duct structure for large-sized transformer framed cores

Also Published As

Publication number Publication date
FR2307355B1 (en) 1979-06-08

Similar Documents

Publication Publication Date Title
US3773965A (en) Electric cables
RU93028889A (en) HIGH VOLTAGE INSULATION FOR ELECTRICAL MACHINES
FR2307355A1 (en) High voltage transformer with coolant oil duct - lined with non-woven felt of fibres of terephthalate (co)polyester of ethylene glycol and/or propane diol
GB1006349A (en) Improvements in electrical printed-circuit windings for dynamo-electric machines
GB1068970A (en) Improvements in or relating to electric cables with compressed gas insulation
GB1268107A (en) Electrical components comprising wound strip conductors
GB1072093A (en) Power cryotron
US3163838A (en) Inductive device employing foamed resin thermal barrier
GB882323A (en) Insulation
GB962222A (en) Improvements in or relating to inductive windings
US2981910A (en) Coil for electrical induction apparatus
SU653629A1 (en) Winding for transformers
JPS5530877A (en) Coil winding for induction device
SU1201883A1 (en) Active part of transformer
SU875486A1 (en) Induction apparatus helical winding
SU613410A1 (en) Transformer
JPS62274610A (en) Foil wound transformer
White et al. Material considerations for high frequency, high power capacitors
GB1062406A (en) Improvements relating to superconductive coils
FR2241903A1 (en) Electrical windings for use at over 250 deg. C - made from nickel-coated copper wire insulated with glass fibre and wrapped with polyester film
GB870534A (en) Improvements in or relating to capacitor units
GB696423A (en) Improvements in or relating to electric condensers
JPS5498995A (en) Bushing
SU803035A1 (en) Method of manufacturing transformer windings
FR2275007A1 (en) Insulation for windings of electromagnetic devices - layers of high temp. resistant polyamide fibres commercially known as nomex

Legal Events

Date Code Title Description
ST Notification of lapse