EP0641002A1 - Hoch- oder Mittelspannungsschalter mit Druckkontakten - Google Patents

Hoch- oder Mittelspannungsschalter mit Druckkontakten Download PDF

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Publication number
EP0641002A1
EP0641002A1 EP94401896A EP94401896A EP0641002A1 EP 0641002 A1 EP0641002 A1 EP 0641002A1 EP 94401896 A EP94401896 A EP 94401896A EP 94401896 A EP94401896 A EP 94401896A EP 0641002 A1 EP0641002 A1 EP 0641002A1
Authority
EP
European Patent Office
Prior art keywords
tube
circuit breaker
contacts
disposed
contact
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
EP94401896A
Other languages
English (en)
French (fr)
Other versions
EP0641002B1 (de
Inventor
Michel Perret
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 EP0641002A1 publication Critical patent/EP0641002A1/de
Application granted granted Critical
Publication of EP0641002B1 publication Critical patent/EP0641002B1/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position

Definitions

  • the present invention relates to a high or medium voltage circuit breaker with end contacts.
  • a high or medium voltage circuit breaker with end contacts comprising, in an envelope filled with gases having good dielectric properties, a first contact at fixed end connected to a first socket-outlet and a mobile assembly comprising a first tube which can be moved. by an operating rod, said first tube being connected to a second outlet and defining with a second tube a blowing volume in which is disposed a fixed blowing piston, this second tube being extended by a blowing nozzle, said circuit breaker also comprising a second contact at the semi-movable tubular end sliding in the first tube and pushed by its end opposite to the first contact by a first end of a helical spring supported by its second end on an annular shoulder inside the first tube.
  • Such circuit breakers with end contacts are known in which the arc is blown by compression of the gas during an opening operation.
  • the moving element is moved by means of an operating rod articulated at the end of the first tube.
  • the semi-mobile contact is requested by a compression spring which allows correct contact with pressure between the end contacts. In the engaged position, this spring is compressed and causes a force which is transmitted over the entire length of the first tube and over the length of the connecting rod which is relatively long. This results in the risk of the maneuvering rod buckling.
  • the present invention solves this problem by proposing an arrangement transmitting the force generated by the spring. requesting the semi-mobile contact on the fixed casing of the circuit breaker in the latching position.
  • a temporary locking member retractable by axial force connects the first tube to said casing, in the engagement position of the contacts.
  • said blocking member is mechanical and according to a preferred embodiment, said blocking member consists of a notch connected to the first tube receiving a ball urged by a compression spring linked to a part fixed to the envelope.
  • the notch is formed on the external surface of the first tube.
  • the notch is formed on a tubular piece sliding on the exterior surface of the first tube and disposed between two annular shoulders disposed on the exterior surface of the first tube, a helical spring being disposed between an abutment surface of said piece and the shoulder closest to the contacts.
  • This specific arrangement also makes it possible to balance the forces on the connecting rod, the second spring of this improvement creating a compression force canceling out that created by the spring of the semi-mobile contact.
  • Figure 1 is a longitudinal sectional view of a circuit breaker according to the invention in the latching position, according to a first embodiment.
  • Figure 2 is a longitudinal sectional view of a circuit breaker according to the invention in the latching position, according to a second alternative embodiment.
  • the high or medium voltage circuit breaker with end contacts comprises, in a casing 1 filled with gases with good dielectric properties, a first fixed end contact 8 connected to a first socket-outlet and a mobile assembly. comprising a first tube 2 which can be moved by an operating rod 3, said first tube 2 being connected to a second outlet and defining with a second tube 4 a blowing volume 5 in which a fixed blowing piston 11 is disposed, this second tube 4 being extended by a blowing nozzle 6.
  • the circuit breaker also comprises a second end contact 9 semi-mobile tubular sliding in the first tube 2 and pushed by its end opposite to the first contact 8 by a first end of a helical spring 10 supported by its second end on an annular shoulder 7 inside the first tube 2.
  • a temporary locking member retractable by axial force connects the first tube to said casing 1, in the engagement position of the contacts 8, 9 as shown in the figures.
  • Said locking member is mechanical and consists of a notch 12 connected to the first tube 2 receiving a ball 13 urged by a compression spring 14 linked to a part 15 fixed to the casing 1.
  • the notch 12 is formed on the outer surface of the first tube 2. More precisely, the end of the first tube 2 on which is articulated the rod 3 is provided with a part 20 of thickness greater than that of the tube 2 and on which the notch 12 is formed.
  • the ball 13 is in its abutment against the spring 14 which is housed in a cavity formed in the part 15 to which the piston 11 is fixed. of the maneuver, the ball 13 rolls freely on the outer surface of the part 20 and once the locking position has been reached, it is housed in the notch 12 where it blocks the first tube 2 to the casing 1.
  • the connecting rod 3 is articulated on the first tube 2 via an oblong hole, which allows the positioning of the locking member.
  • the notch 12 is formed on a tubular piece 16 sliding on the outer surface of the first tube 2 and disposed between two annular shoulders 17, 18 disposed on the outer surface of the first tube 2, a spring 19 helical being disposed between an abutment surface of said part 16 and the shoulder 17 closest to the contacts 8, 9.
  • the abutment shoulder 18 pushes the part 16 to the latching position where the ball 12, after having rolled freely on the external surface of the part, is housed in the notch 12
  • the spring 19 is compressed continuously between the part 16 and the abutment shoulder 17. In this position, the force which it creates balances the force created by the spring 10 of the end contact 9.
  • the connecting rod 3 By maneuvering the connecting rod 3, when the contacts open, the abutment shoulder 17 pushes the spring 19 and the part 16 to the right, the ball 13 being released by this axial force out of the notch 12.

Landscapes

  • Circuit Breakers (AREA)
  • Push-Button Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP94401896A 1993-08-30 1994-08-25 Hoch- oder Mittelspannungsschalter mit Druckkontakten Expired - Lifetime EP0641002B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310366A FR2709597B1 (fr) 1993-08-30 1993-08-30 Disjoncteur à moyenne ou haute tension à contacts en bout.
FR9310366 1993-08-30

Publications (2)

Publication Number Publication Date
EP0641002A1 true EP0641002A1 (de) 1995-03-01
EP0641002B1 EP0641002B1 (de) 1997-05-14

Family

ID=9450451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401896A Expired - Lifetime EP0641002B1 (de) 1993-08-30 1994-08-25 Hoch- oder Mittelspannungsschalter mit Druckkontakten

Country Status (4)

Country Link
EP (1) EP0641002B1 (de)
AT (1) ATE153173T1 (de)
DE (1) DE69403157T2 (de)
FR (1) FR2709597B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2766609A1 (fr) * 1997-07-24 1999-01-29 Gec Alsthom T & D Sa Interrupteur a gaz a volume d'expansion thermique compressible
EP3926653A1 (de) * 2020-06-15 2021-12-22 ABB Power Grids Switzerland AG System zur reduzierung von kontaktprellen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102469510B1 (ko) * 2020-07-09 2022-11-21 김평중 차단기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1615563A1 (de) * 1966-09-01 1970-05-27 Bbc Brown Boveri & Cie Druckgasschalter
DE3930548A1 (de) * 1989-09-13 1991-03-21 Licentia Gmbh Schalter mit selbsterzeugter lichtbogenbeblasung
EP0525716A1 (de) * 1991-08-02 1993-02-03 Gec Alsthom Sa Mittel- oder Hochspannungslastschalter mit aufeinanderstossenden Lichtbogenkontakten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1615563A1 (de) * 1966-09-01 1970-05-27 Bbc Brown Boveri & Cie Druckgasschalter
DE3930548A1 (de) * 1989-09-13 1991-03-21 Licentia Gmbh Schalter mit selbsterzeugter lichtbogenbeblasung
EP0525716A1 (de) * 1991-08-02 1993-02-03 Gec Alsthom Sa Mittel- oder Hochspannungslastschalter mit aufeinanderstossenden Lichtbogenkontakten

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2766609A1 (fr) * 1997-07-24 1999-01-29 Gec Alsthom T & D Sa Interrupteur a gaz a volume d'expansion thermique compressible
EP0895262A1 (de) * 1997-07-24 1999-02-03 Gec Alsthom T & D Sa Gasschalter mit komprimierbaren Volum und Wärmeausdehnung
US5939692A (en) * 1997-07-24 1999-08-17 Gec Alsthom T & D Sa Gas-filled interrupter with compressible thermal expansion chamber
EP3926653A1 (de) * 2020-06-15 2021-12-22 ABB Power Grids Switzerland AG System zur reduzierung von kontaktprellen
WO2021254764A1 (en) * 2020-06-15 2021-12-23 Hitachi Energy Switzerland Ag Contact bounce reduction system
KR20230003585A (ko) * 2020-06-15 2023-01-06 히타치 에너지 스위처랜드 아게 접촉 바운스 감소 시스템
CN115769325A (zh) * 2020-06-15 2023-03-07 日立能源瑞士股份公司 触点反弹减小系统
CN115769325B (zh) * 2020-06-15 2023-07-04 日立能源瑞士股份公司 触点反弹减小系统
US11742157B2 (en) 2020-06-15 2023-08-29 Hitachi Energy Switzerland Ag Contact bounce reduction system

Also Published As

Publication number Publication date
ATE153173T1 (de) 1997-05-15
EP0641002B1 (de) 1997-05-14
DE69403157D1 (de) 1997-06-19
DE69403157T2 (de) 1997-08-28
FR2709597B1 (fr) 1995-10-13
FR2709597A1 (fr) 1995-03-10

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