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EP0788125A1 - Hochspannungslastschalter mit Einschalt-Widerstand - Google Patents

Hochspannungslastschalter mit Einschalt-Widerstand Download PDF

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Publication number
EP0788125A1
EP0788125A1 EP97400180A EP97400180A EP0788125A1 EP 0788125 A1 EP0788125 A1 EP 0788125A1 EP 97400180 A EP97400180 A EP 97400180A EP 97400180 A EP97400180 A EP 97400180A EP 0788125 A1 EP0788125 A1 EP 0788125A1
Authority
EP
European Patent Office
Prior art keywords
contact
rod
circuit breaker
ring
switching member
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
EP97400180A
Other languages
English (en)
French (fr)
Other versions
EP0788125B1 (de
Inventor
Alain Girodet
Marc Vittoz
André Cimala
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.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D 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 GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0788125A1 publication Critical patent/EP0788125A1/de
Application granted granted Critical
Publication of EP0788125B1 publication Critical patent/EP0788125B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch

Definitions

  • the present invention relates to a high voltage circuit breaker with resistance inserted at closing.
  • a high voltage circuit breaker comprising in a casing filled with dielectric gas a first arcing contact and a second arcing contact movable in opposite directions from an open position to a closed position and conversely, the first contact being secured by a ring to a sliding tube in a support part electrically connected to an electrical outlet.
  • Such contact arrangements are commonly used in circuit breakers, in particular in so-called shielded metal casing circuit breakers. Said ring is then conductive to allow the passage of current from the first contact to said socket.
  • circuit breakers it may be necessary to insert a closing resistance as it is conventional to do in high voltage circuit breakers, as described for example in patent document FR-2 612 683 filed by the Applicant.
  • the object of the invention is to provide an arrangement for inserting resistance to closing, which adapts to the aforementioned type of circuit breaker, without any significant modification in the breaking chamber of this circuit breaker and keeping the size of the same unchanged. ci, while not requiring significant maneuvering energy.
  • said ring is made of insulating material
  • the first contact is extended by a rod coaxial with this contact, arranged on the side opposite to the second contact and connected to a resistor and this rod carries a switching member arranged to directly connect said rod electrically and the support part being closed.
  • the mounting of the closing resistor therefore requires only the replacement of the conductive ring with a ring of insulating material and the mounting of the extension rod, as regards the breaking chamber.
  • the switching member consists of a ring carried by said rod and carrying an arrangement intended to be blocked in a latching part carried by the support part.
  • said arrangement is a ring of flexible fingers with an end cap.
  • the switching member In order to allow the insertion of the resistor during an at least partial displacement of opening of the contacts, the switching member is pushed by a spring against a stop integral with the rod, the pressure force of this spring being directed in the same direction as the direction of opening movement of the first contact and the rod carries a disconnection shoulder of the switching member and of the latching part at the end of opening.
  • the electrical connection between the resistor and the rod is made by a tube into which the rod is introduced and equipped with a sliding contact.
  • Figure 1 is a partial view in longitudinal section of a circuit breaker according to the invention, in the open position.
  • Figure 2 is a partial view in longitudinal section of a circuit breaker according to the invention, in a first intermediate position when closed.
  • Figure 3 is a partial view in longitudinal section of a circuit breaker according to the invention, in a second intermediate position when closed.
  • Figure 4 is a partial view in longitudinal section of a circuit breaker according to the invention, in the closed position.
  • the circuit breaker shown is a high voltage circuit breaker in a metal shell called a shield.
  • the invention can be transposed to conventional apparatus with a ceramic or synthetic envelope.
  • It comprises a breaking chamber 1 in a casing 1A, a chamber for receiving the resistor 2 in a casing 2A and a socket outlet chamber 3 of deadtank type in a casing 3A.
  • the resistor consists of two stacks of resistive pads 20, 21 placed in series by means of a metal plate 23 supported by a cone of insulating material 24 fixed to an envelope wall 25. Each of these stacks is mounted in a manner known per se in an insulating material tube 26, 27 embedded in a metal part 28, 29 fixed to the plate 23 and retaining at its other end a metal block 30, 31 to which a metal rod 32, 33 is secured. The pellets are pushed against this block 30, 31 by a spring 34, 35 interposed between the part 28, 29 and a metallic contact pad 36, 37 disposed at the base of each stack of resistive pads.
  • the outlet rod 33 is permanently connected to the socket 40 of the chamber 3.
  • this socket 40 is integral with a tubular support piece 41 disposed in the breaking chamber 1 and receiving one of the arcing contacts, as will be explained below.
  • This tubular support piece 41 is supported by a cone made of insulating material 43 fixed to an envelope wall 44 separating the chambers 1, 2 and this thanks to a metal ring 42 screwed onto the support piece 41 and blocking said cone 43 between it and the support piece 41.
  • To this ring 42 is secured the outlet rod 33 by a screwed contact with spring of the "FELS" type for example.
  • the first arcing contact 50 consisting of a conventional end piece extended by screwing by a metallic extension rod 51 which is introduced into the input rod 32 which is hollow, the latter being electrically connected to the extension rod 51 by a sliding contact 52.
  • a ring, for example conical, of insulating material 54 Between the end piece 50 and a shoulder 53 of the extension rod 51 is arranged a ring, for example conical, of insulating material 54, the outer edge of which is fixed to a metal tube 55 to slide in the support piece 41.
  • this tube 55 is secured to an operating rod made of insulating material 56, by an arm 57 comprising an orifice in which the support piece 41 is threaded.
  • the extension rod 51 carries a switching member 58 pushed against a ring or a shoulder 59 integral with the extension rod 51 by a spring 60 interposed between this switching member 58 and the first shoulder 53.
  • the member switching 58 consists of a sliding ring on the extension rod 51 by means of a sliding contact 58A and carrying a ring 61 of slightly flexible fingers with end caps.
  • the ring or shoulder 59 and the first shoulder 53 are spaced apart by a length l.
  • the support piece 41 carries an annular snap-fitting part 62, disposed at its end and intended to receive and block said fingers of the crown 61 and to ensure the passage of current between the switching member 58 and the support piece 41, as will be seen below.
  • the second arcing contact 70 is of the type of mobile contact described in patent document FR-2 612 683, shaped in a manner known per se, consisting of contact fingers and integral with a mobile assembly carrying a blowing nozzle 71 .
  • the two arcing contacts 50, 70 are therefore mobile and can be actuated by a common drive device, and in this case at an equal speed, or be actuated by different drive devices, and in this case possibly at different speeds.
  • the circuit breaker works as follows.
  • the circuit breaker is shown in the open position.
  • the arcing contacts 50, 70 are spaced from each other, the tube 55 carrying the first arcing contact 50 being in its leftmost position, where it is at most introduced into the tubular support piece 41 and the moving element carrying the second arcing contact 70 in its rightmost position.
  • the distance 1 is such that the switching member 58 is distant from the latching part 62 and is located on the side opposite the contact 50.
  • the support part 41 and therefore the socket 40 are therefore not directly electrically connected to the rod extension 51, but are connected via the resistor then inserted and ensuring the potential of the arcing contact.
  • the contacts 50, 70 are approached from each other by actuation of the drive device (s). After a first stroke of the tube 55 and therefore of the first arcing contact 50, as shown in FIG. 2, the arcing contacts 50, 70 come close to one another and an arc appears. In this position, the switching member 58 is still distant from the latching part 62 and the first contact 50 and the socket 40 are not electrically connected. The resistor is therefore inserted, the current passing through the second contact 70, the first contact 50, the extension rod 51, the inlet tube 32 the first stack of resistive pads 21, the second stack of resistive pads 22, the tube outlet 33, part 42, support part 41 and socket 40.
  • the first contact 50 is inserted into the second contact 70 and the resistor is always inserted.
  • the switching member 58 has its fingers 61 snapped into the snap-in portion 62.
  • the main contacts 50A and 70A come into contact and ensure the current flow.
  • the contacts Upon opening, the contacts are moved in the opposite direction, away from each other.
  • the latching of the switching member 58 and the latching part 62 continues until a shoulder 51A has not reached the switching member 58.
  • This shoulder 51A pushes the switching member 58 and the disengages from the latching part 62 then the spring 60 returns the switching member 58 to its initial position for opening the circuit breaker.
  • the release of the switching member 58 from the latching part 62 takes place near the total open position or at this position.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP97400180A 1996-01-31 1997-01-27 Hochspannungslastschalter mit Einschalt-Widerstand Expired - Lifetime EP0788125B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601129 1996-01-31
FR9601129A FR2744283B1 (fr) 1996-01-31 1996-01-31 Disjoncteur a haute tension a resistance inseree a la fermeture

Publications (2)

Publication Number Publication Date
EP0788125A1 true EP0788125A1 (de) 1997-08-06
EP0788125B1 EP0788125B1 (de) 2002-03-13

Family

ID=9488659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400180A Expired - Lifetime EP0788125B1 (de) 1996-01-31 1997-01-27 Hochspannungslastschalter mit Einschalt-Widerstand

Country Status (9)

Country Link
US (1) US5717184A (de)
EP (1) EP0788125B1 (de)
CN (1) CN1084036C (de)
AT (1) ATE214513T1 (de)
CA (1) CA2196442C (de)
DE (1) DE69710934T2 (de)
ES (1) ES2170921T3 (de)
FR (1) FR2744283B1 (de)
ID (1) ID15855A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100458994C (zh) * 2006-07-17 2009-02-04 大全集团有限公司 屏蔽隔离断路器
EP3748658B1 (de) * 2019-06-04 2022-03-23 General Electric Technology GmbH Kontaktanordnung für einschaltwiderstände
US12057278B2 (en) * 2020-01-17 2024-08-06 Mitsubishi Electric Corporation Gas circuit breaker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1063682B (de) * 1958-10-10 1959-08-20 Voigt & Haeffner Ag Hochspannungsdruckluftschalter mit Vielfachunterbrechung pro Pol
DE3242014A1 (de) * 1981-11-12 1983-06-30 Mitsubishi Denki K.K., Tokyo Gasisolierter stromkreis-trenner bzw. -ausschalter
FR2612683A1 (fr) 1987-03-18 1988-09-23 Alsthom Disjoncteur a haute tension a resistance de fermeture

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH579819A5 (de) * 1974-11-22 1976-09-15 Bbc Brown Boveri & Cie
FR2682219B1 (fr) * 1991-10-02 1997-01-31 Alsthom Gec Disjoncteur ultra haute tension.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1063682B (de) * 1958-10-10 1959-08-20 Voigt & Haeffner Ag Hochspannungsdruckluftschalter mit Vielfachunterbrechung pro Pol
DE3242014A1 (de) * 1981-11-12 1983-06-30 Mitsubishi Denki K.K., Tokyo Gasisolierter stromkreis-trenner bzw. -ausschalter
FR2612683A1 (fr) 1987-03-18 1988-09-23 Alsthom Disjoncteur a haute tension a resistance de fermeture

Also Published As

Publication number Publication date
ID15855A (id) 1997-08-14
CN1160920A (zh) 1997-10-01
DE69710934T2 (de) 2002-11-07
EP0788125B1 (de) 2002-03-13
ATE214513T1 (de) 2002-03-15
ES2170921T3 (es) 2002-08-16
CA2196442A1 (fr) 1997-08-01
FR2744283B1 (fr) 1998-02-27
DE69710934D1 (de) 2002-04-18
CA2196442C (fr) 1999-08-17
US5717184A (en) 1998-02-10
FR2744283A1 (fr) 1997-08-01
CN1084036C (zh) 2002-05-01

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