OA09967A - Self-protected submerged polyphase electrical transformer - Google Patents

Self-protected submerged polyphase electrical transformer

Info

Publication number
OA09967A
OA09967A OA60581A OA60581A OA09967A OA 09967 A OA09967 A OA 09967A OA 60581 A OA60581 A OA 60581A OA 60581 A OA60581 A OA 60581A OA 09967 A OA09967 A OA 09967A
Authority
OA
OAPI
Prior art keywords
sensor
transformer
power supply
protection against
phases
Prior art date
Application number
OA60581A
Other languages
French (fr)
Inventor
Pierre Mangin
Michel Sacotte
Andre Devalland
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
Publication of OA09967A publication Critical patent/OA09967A/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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Cable Accessories (AREA)
  • Fuses (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Paints Or Removers (AREA)
  • Insulating Of Coils (AREA)
  • Secondary Cells (AREA)
  • Protection Of Static Devices (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>
OA60581A 1993-11-15 1994-11-11 Self-protected submerged polyphase electrical transformer OA09967A (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
OA09967A true OA09967A (en) 1995-12-11

Family

ID=9452921

Family Applications (1)

Application Number Title Priority Date Filing Date
OA60581A OA09967A (en) 1993-11-15 1994-11-11 Self-protected submerged polyphase electrical 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
FI102329B (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
ZA948692B (en) 1995-07-03
FR2712730B1 (en) 1995-12-29
DE69422142D1 (en) 2000-01-20
EP0653765A1 (en) 1995-05-17
EP0653765B1 (en) 1999-12-15
FR2712730A1 (en) 1995-05-24
MA23366A1 (en) 1995-07-01
ES2142393T3 (en) 2000-04-16
ATE187843T1 (en) 2000-01-15
EG20461A (en) 1999-05-31
DE69422142T2 (en) 2000-08-24

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