EP0707330A1 - Lasttrennschalter - Google Patents

Lasttrennschalter Download PDF

Info

Publication number
EP0707330A1
EP0707330A1 EP95402257A EP95402257A EP0707330A1 EP 0707330 A1 EP0707330 A1 EP 0707330A1 EP 95402257 A EP95402257 A EP 95402257A EP 95402257 A EP95402257 A EP 95402257A EP 0707330 A1 EP0707330 A1 EP 0707330A1
Authority
EP
European Patent Office
Prior art keywords
envelope
circuit breaker
rod
vacuum interrupter
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
EP95402257A
Other languages
English (en)
French (fr)
Other versions
EP0707330B1 (de
EP0707330B9 (de
Inventor
Lucien Sannino
Florent Eynaud
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 EP0707330A1 publication Critical patent/EP0707330A1/de
Publication of EP0707330B1 publication Critical patent/EP0707330B1/de
Application granted granted Critical
Publication of EP0707330B9 publication Critical patent/EP0707330B9/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts
    • H01H2009/526—Cooling of switch parts of the high voltage switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts

Definitions

  • the present invention relates to improvements to self-disconnecting circuit breakers.
  • a multi-pole self-isolating circuit breaker comprises, for each pole, an insulating envelope enclosing a vacuum interrupter, the enclosure comprising at a first end a first contact connected to a first terminal of the ampoule and intended to cooperate with a busbar. a busbar, and at a second end a second contact connected to a second terminal of the vacuum interrupter and intended to cooperate with a cable from a set of cables, the envelopes of the different poles being fixed to the same metal profile along which is placed an operating shaft common to the poles which is actuated by a control contained in a box secured to the profile, the profile being actuated in rotation to ensure the sectioning function of the device.
  • the insulating envelope comprises a first part intended to house the vacuum interrupter and a second part inside which is coaxially arranged a tube electrically connecting the ampoule to vacuum and the second contact, said tube containing inside a rod connected to the movable contact of the vacuum interrupter and on the other hand to a mechanism for operating the vacuum interrupters.
  • An object of the present invention is to industrialize the product which has been defined above, with a view to producing a lower cost price device; for this a certain number of technical improvements have been made, leading in particular to a reduced number of parts and a reduced assembly time.
  • the subject of the invention is a multipole self-disconnecting circuit breaker comprising, for each pole, molded insulating envelope comprising a first cylindrical part enclosing a vacuum interrupter extended axially by a second part, the envelope comprising at a first end a first contact connected to a first terminal of the ampoule and intended to cooperate with a bar of a busbar, and at a second end a second contact connected to a second terminal of the vacuum interrupter and intended to cooperate with a cable of a set of cables, the envelopes of the different poles being fixed to the same metal profile along which is placed an operating shaft common to the poles which is actuated by a control contained in a box secured to the profile, the second part of the envelope enclosing in particular a metal tube for the passage of current and a rod for the operation of the vacuum interrupter, the profile being actuated in rotation to ensure the sectioning function of the device, said metal tube being secured é to the insulating envelope during molding thereof, characterized in that said
  • the envelope comprises a metal part inserted during molding, having one end outside the envelope and serving as a fixed articulation point for a mechanism for operating the vacuum interrupter comprising a connecting rod articulated at the end of the operating rod of the vacuum interrupter, an insulating arm and a connecting rod connected to said control shaft.
  • the circuit breaker of the invention comprises means for adjusting, from the outside, the distance between the contacts of the vacuum interrupter, said means comprising a shim fixed by screwing to the end of the operating rod of the interrupter , this wedge bearing on a ring to which said connecting rod is articulated and on a sheath surrounding the rod and itself surrounded by a spring bearing on one end of the sheath and on said ring.
  • the circuit breaker according to the invention comprises an indication of wear of the contacts of the vacuum interrupter, visible and accessible at the base of the pole, this indication being the distance separating said shim from said ring in the latched position of the circuit breaker.
  • the envelope comprises, coming from molding, two fins framing the first contact.
  • the envelope comprises, in the vicinity of the junction between the two parts of the envelope, a metal part placed during the molding of the envelope and having an annular volume coaxial with the envelope and communicating, through holes with the interior of the tube.
  • Figure 1 there is shown in axial section, a pole of a self-disconnecting circuit breaker comprising the improvements of the invention.
  • the pole comprises an insulating envelope 1 comprising a first part 1A enclosing a vacuum bulb 2 and a second part 1B containing elements described below for the passage of current and the operation of the vacuum bulb.
  • the envelope is produced by molding a synthetic resin.
  • the envelope comprises a metal part 4, in the form of a block, one face of which is flush with the surface of the envelope for fixing the pole to the metal support profile 5.
  • the block 4 has at least one tapped bore to receive one or more fixing screws.
  • Block 4 is inserted into the envelope during molding thereof. This insert is advantageously placed at the junction between parts 1A and 1B of the envelope.
  • the metal insert 4 has dimensions greater than those required by the simple function of the fixing member, so as to enable it further to contribute to the evacuation of the calories produced by the passage of current.
  • the block 4 is preferably made of aluminum or copper.
  • the tube 7, intended on the one hand to conduct the current inside the envelope by connecting the vacuum interrupter to the second contact of the pole, and on the other hand to enclose the operating rod 8 of the vacuum interrupter, extended by a rod 8A, is overmolded during the molding of the envelope. Furthermore, its lower part 7A is flared by 90 ° so as to allow the attachment of a plate 9 constituting the second contact of the pole.
  • the connection of the tube 7 and the plate 9 is advantageously carried out by means of screws 11 overmolded with the tube 7 during the molding of the envelope and cooperating with nuts 12.
  • the insulating envelope of the pole comprises, coming from molding, two parallel lateral fins framing the first contact 13 of the pole; one of these fins, referenced 14 is visible in Figure 1. These fins contribute to improving the dielectric strength of the pole.
  • the operating mechanism comprises, in addition to the shaft 15 movable in translation in the plane perpendicular to the plane of the figure, a bent rod 16 articulated on the one hand to the shaft 15 and on the other hand to a rod 17A extending an arm insulator 17: the bent rod is articulated to a fixed axis 16A secured to the profile 5; the insulating arm 17 is articulated to a connecting rod 18 itself articulated to the rod 8A.
  • the connecting rod 18 pivots around a fixed point A and, according to the invention, this fixed point A is located at the end of a metal element 20 inserted during molding, in the body of the envelope 1. This arrangement ensures precision of the vacuum bulb control movements.
  • the connecting rod 18 is hinged indirectly to the rod 8A; the connecting rod 18 is articulated to a ring 21 surrounding the end of a sheath 22 itself surrounding the end of the rod 8; a spring 23 exerts pressure between the ring 21 and the end of the sheath 22; at the end of the rod 8A, which is threaded, a shim 24 held in place by a nut 25, makes it possible to adjust the distance of the contacts 2A and 2B of the vacuum interrupter.
  • the ring 21 and the shim 24 are no longer in contact.
  • the distance between them decreases in the same way as the wear of the contacts of the vacuum interrupter; the measurement of this distance makes it possible to have a visual indication of said wear accessible at the base of the pole.
  • the reference 30 designates a sliding contact making it possible to electrically connect the movable rod 8 of the vacuum interrupter and the tube 7.
  • This contact is provided with channels 31 allowing ventilation between the lower part of the envelope and the space 32 between the vacuum interrupter and the envelope 1A; this ventilation, combined with the cooling produced by the insert 4, ensures sufficient cooling.
  • additional cooling measures are provided, illustrated in FIG. 2, which represents in partial axial section, a pole according to an alternative embodiment. These measures consist in providing a metal part 35, preferably made of copper, inserted during the molding of the envelope, and which has an annular volume 36 communicating through holes 37 in the tube 7 with the interior thereof. In this way, there is produced by natural draft a strong ventilation indicated in Figure 2 by the arrows.
  • the reference 40 designates a measurement toroid whose role has been described in the aforementioned document.
  • the pole is an industrial product of simple manufacturing, with a limited number of parts and ease of assembly which reduce the cost, safe operation thanks to perfect cooling in service, adjustment possibilities as well as an indication of wear of the vacuum bulb contacts.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Keying Circuit Devices (AREA)
  • Lock And Its Accessories (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP95402257A 1994-10-14 1995-10-09 Lasttrennschalter Expired - Lifetime EP0707330B9 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9412295 1994-10-14
FR9412295A FR2725830B1 (fr) 1994-10-14 1994-10-14 Disjoncteur auto-sectionneur

Publications (3)

Publication Number Publication Date
EP0707330A1 true EP0707330A1 (de) 1996-04-17
EP0707330B1 EP0707330B1 (de) 2001-08-22
EP0707330B9 EP0707330B9 (de) 2002-05-15

Family

ID=9467873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402257A Expired - Lifetime EP0707330B9 (de) 1994-10-14 1995-10-09 Lasttrennschalter

Country Status (5)

Country Link
EP (1) EP0707330B9 (de)
AT (1) ATE204676T1 (de)
DE (1) DE69522282T2 (de)
ES (1) ES2159612T3 (de)
FR (1) FR2725830B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006032619A1 (de) 2004-09-24 2006-03-30 Siemens Aktiengesellschaft Isolierstoffgehäuse mit belüftungsschacht
WO2013098048A1 (de) * 2011-12-29 2013-07-04 Siemens Aktiengesellschaft Übertragungsbaugruppe eines leistungsschalters und deren leistungsschalter
CN110911217A (zh) * 2019-11-26 2020-03-24 深圳市安达工业设计有限公司 一种便于连接的新型真空开关管

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017206754A1 (de) * 2017-04-21 2018-10-25 Siemens Aktiengesellschaft Schaltgeräteantriebsanordnung
EP4027365B1 (de) 2021-01-07 2025-03-05 ABB Schweiz AG Schaltvorrichtung für elektrische systeme

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2322372A1 (de) * 1973-04-30 1974-11-07 Siemens Ag Mehrpoliges vakuumschaltgeraet
GB1499106A (en) * 1975-05-23 1978-01-25 Ass Elect Ind Actuating mechanism for vacuum interrupters
US4479042A (en) * 1983-04-19 1984-10-23 Westinghouse Electric Corp. Contact overtravel adjustment apparatus for a vacuum contactor
FR2683939A1 (fr) * 1991-11-20 1993-05-21 Alsthom Gec Disjoncteur auto-sectionneur a moyenne tension et application a une cellule et a un poste a moyenne tension.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2322372A1 (de) * 1973-04-30 1974-11-07 Siemens Ag Mehrpoliges vakuumschaltgeraet
GB1499106A (en) * 1975-05-23 1978-01-25 Ass Elect Ind Actuating mechanism for vacuum interrupters
US4479042A (en) * 1983-04-19 1984-10-23 Westinghouse Electric Corp. Contact overtravel adjustment apparatus for a vacuum contactor
FR2683939A1 (fr) * 1991-11-20 1993-05-21 Alsthom Gec Disjoncteur auto-sectionneur a moyenne tension et application a une cellule et a un poste a moyenne tension.
EP0543683A1 (de) * 1991-11-20 1993-05-26 Gec Alsthom Sa Mittelspannungs-Lasttrennschalter und Verwendung in einer Mittelspannungszelle und Mittelspannungspost

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006032619A1 (de) 2004-09-24 2006-03-30 Siemens Aktiengesellschaft Isolierstoffgehäuse mit belüftungsschacht
WO2013098048A1 (de) * 2011-12-29 2013-07-04 Siemens Aktiengesellschaft Übertragungsbaugruppe eines leistungsschalters und deren leistungsschalter
CN110911217A (zh) * 2019-11-26 2020-03-24 深圳市安达工业设计有限公司 一种便于连接的新型真空开关管

Also Published As

Publication number Publication date
FR2725830B1 (fr) 1997-01-03
FR2725830A1 (fr) 1996-04-19
DE69522282D1 (de) 2001-09-27
DE69522282T2 (de) 2002-05-16
ES2159612T3 (es) 2001-10-16
EP0707330B1 (de) 2001-08-22
EP0707330B9 (de) 2002-05-15
ATE204676T1 (de) 2001-09-15

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