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EG20461A - Protected imerge electric transformer - Google Patents

Protected imerge electric transformer

Info

Publication number
EG20461A
EG20461A EG71794A EG71794A EG20461A EG 20461 A EG20461 A EG 20461A EG 71794 A EG71794 A EG 71794A EG 71794 A EG71794 A EG 71794A EG 20461 A EG20461 A EG 20461A
Authority
EG
Egypt
Prior art keywords
sensor
transformer
power supply
protection against
phases
Prior art date
Application number
EG71794A
Other languages
French (fr)
Inventor
Pierre Mangin
Original Assignee
France Transfo 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 France Transfo Sa filed Critical France Transfo Sa
Application granted granted Critical
Publication of EG20461A publication Critical patent/EG20461A/en

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
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • 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
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • H01F2027/404—Protective devices specially adapted for fluid filled transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0291—Structural association with a current transformer

Landscapes

  • Power Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Cable Accessories (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Secondary Cells (AREA)
  • Protection Of Static Devices (AREA)
  • Paints Or Removers (AREA)
  • Insulating Of Coils (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Fuses (AREA)

Abstract

This transformer, with a sealed tank filled with a dielectric cooling liquid, is provided with equipment for self protection against the risk of explosion of the tank, consisting of: * an immersed unit for protection against internal breakdowns degenerating relatively slowly and comprising: - an immersed sensor 1, sensitive to changes of a characteristic of the dielectric liquid which surrounds it, chosen from among those, such as pressure, which react at the site of the sensor practically upon the appearance, at any site in the liquid mass, of a degenerative defect, this sensor delivering an "on or off" signal in response to this alteration. - a non-rearmable polyphase contact breaker 5 between the phases of the power supply and the corresponding primary winding of the transformer. - and a trigger 6 for control of the opening of the contact breaker 5 driven by the signal delivered by the sensor 1, when the amplitude of the said signal exceeds a preestablished safety threshold value: * and a unit for protection against sudden current overloads drawn by the transformer from the power supply means, comprising, on each of the phases of the power supply, an array of fuses 26, 27 mounted in cascade and including staged cutoff thresholds. <IMAGE>
EG71794A 1993-11-15 1994-11-12 Protected imerge electric transformer EG20461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9313700A FR2712730B1 (en) 1993-11-15 1993-11-15 Protected submerged electric transformer.

Publications (1)

Publication Number Publication Date
EG20461A true EG20461A (en) 1999-05-31

Family

ID=9452921

Family Applications (1)

Application Number Title Priority Date Filing Date
EG71794A EG20461A (en) 1993-11-15 1994-11-12 Protected imerge electric transformer

Country Status (9)

Country Link
EP (1) EP0653765B1 (en)
AT (1) ATE187843T1 (en)
DE (1) DE69422142T2 (en)
EG (1) EG20461A (en)
ES (1) ES2142393T3 (en)
FR (1) FR2712730B1 (en)
MA (1) MA23366A1 (en)
OA (1) OA09967A (en)
ZA (1) ZA948692B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730357A1 (en) * 1995-02-08 1996-08-09 Alsthom Gec Electrical disconnection system for transformer immersed in dielectric isolating liquid
FR2747245B1 (en) * 1996-04-04 1998-05-15 Gec Alsthom T & D Sa SYSTEM FOR PROTECTING AN INSULATED THREE-PHASE DISTRIBUTION TRANSFORMER IN A LIQUID DIELECTRIC
FI102329B1 (en) * 1997-02-06 1998-11-13 Abb Transmit Oy Switch to disconnect an electrical appliance from an electrical mains
FR2782409B1 (en) * 1998-08-14 2002-11-29 Schneider Electric Ind Sa UNDERWATER TRANSFORMER SELF-PROTECTED BY A DEVICE INCLUDING A CIRCUIT BREAKER AND FUSES
FR2822601B1 (en) * 2001-03-21 2004-12-24 Transfix Toulon Soc Nouv SCALABLE TRANSFORMATION STATION FOR ARTERY-LOWER NETWORKS
EP2075807B1 (en) 2007-12-28 2014-09-17 Constructora de Transformadores de Distribucion Cotradis, S.L.U. Electrical equipment for distribution network with fault detection, disconnection and elimination system
FR2942353B1 (en) * 2009-02-19 2011-06-17 Transfix Toulon Sa Soc Nouv METHOD, DEVICE AND SYSTEM FOR PROTECTING AN ELECTRICAL APPARATUS, AND TRANSFORMER AND STATION COMPRISING SUCH A DEVICE OR SYSTEM

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223364A (en) * 1978-05-25 1980-09-16 Sangster Harold L Pressure and temperature responsive protective devices
US4435690A (en) * 1982-04-26 1984-03-06 Rte Corporation Primary circuit breaker
DE3543584A1 (en) * 1985-12-10 1987-06-11 Volta Werke Electricitaet Transformer with a fusing (protection) device

Also Published As

Publication number Publication date
OA09967A (en) 1995-12-11
FR2712730B1 (en) 1995-12-29
ATE187843T1 (en) 2000-01-15
MA23366A1 (en) 1995-07-01
EP0653765A1 (en) 1995-05-17
DE69422142T2 (en) 2000-08-24
FR2712730A1 (en) 1995-05-24
ZA948692B (en) 1995-07-03
ES2142393T3 (en) 2000-04-16
DE69422142D1 (en) 2000-01-20
EP0653765B1 (en) 1999-12-15

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