EP0592742B1 - Trennschalter mit verbesserter Ausschaltleistung und mit vertikaler Öffnungsbewegung - Google Patents

Trennschalter mit verbesserter Ausschaltleistung und mit vertikaler Öffnungsbewegung Download PDF

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Publication number
EP0592742B1
EP0592742B1 EP92402751A EP92402751A EP0592742B1 EP 0592742 B1 EP0592742 B1 EP 0592742B1 EP 92402751 A EP92402751 A EP 92402751A EP 92402751 A EP92402751 A EP 92402751A EP 0592742 B1 EP0592742 B1 EP 0592742B1
Authority
EP
European Patent Office
Prior art keywords
hammer
switch
blade
connector
lever
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.)
Expired - Lifetime
Application number
EP92402751A
Other languages
English (en)
French (fr)
Other versions
EP0592742A1 (de
Inventor
Daniel Demissy
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.)
Alstom Canada Inc
Original Assignee
GEC Alsthom Energie Inc
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
Priority to FR9104346A priority Critical patent/FR2675304B1/fr
Priority to US07/863,223 priority patent/US5243159A/en
Priority to CA002065509A priority patent/CA2065509C/fr
Priority to AT92402751T priority patent/ATE153475T1/de
Priority to ES92402751T priority patent/ES2101061T3/es
Application filed by GEC Alsthom Energie Inc filed Critical GEC Alsthom Energie Inc
Priority to DE69219893T priority patent/DE69219893T2/de
Priority to DK92402751.9T priority patent/DK0592742T3/da
Priority to EP92402751A priority patent/EP0592742B1/de
Publication of EP0592742A1 publication Critical patent/EP0592742A1/de
Application granted granted Critical
Publication of EP0592742B1 publication Critical patent/EP0592742B1/de
Priority to GR970402018T priority patent/GR3024371T3/el
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
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H01H33/126—Load break switches comprising a separate circuit breaker being operated by the distal end of a sectionalising contact arm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact

Definitions

  • the present invention relates to a disconnector and relates more particularly to a disconnector with vertical opening according to the preamble of claim 1.
  • Disconnectors have very little or no breaking capacity; it is however desirable to produce disconnectors having a certain breaking capacity, in order to carry out certain loop transfer maneuvers.
  • An object of the present invention is to provide a disconnector having a significant breaking capacity, for example making it possible to cut 4200 A at 20 kV earth phase.
  • Another object of the invention is to provide a disconnector which can operate safely even if ice is deposited on the device, without penalizing the cost price of the device by an oversized operating mechanism.
  • Another object of the invention is to provide a switch in which the glass is broken without using a large force.
  • Another object of the invention is to produce a high-voltage device, comprising a blade of sufficient length to ensure isolation, in which the glass is broken both when opening and when closing without risk of damaging the blade.
  • a disconnector of the type comprising a blade connected, at a first end, to a first connector and to means allowing, during an opening phase, a first rotation around itself and a second rotation about an axis, said blade carrying at its second end a contact hammer cooperating with a jaw connected to a second connector, the disconnector comprising means so that, during an opening operation , after the blade has rotated on itself causing the electrical disconnection of the hammer and the jaw, the current is first diverted, then switched through a switch, the latter opening under the control of a snap mechanism controlled by the movement of the blade, characterized in that said means comprise a sacrificial hammer removably arranged in the extension of the hammer and cooperating with ec two horns between which it engages and moves with friction, one of the horns having an insulating portion between two metal portions, one of which is connected to the second connector and the other is connected to an input of the switch
  • the switch operating mechanism comprises a first pivoting lever, under the action of the arm, around a fixed axis disposed at a first end, a spring fixed on the one hand to the second end of said first lever and on the other hand to a first end of a second lever pivoting about a fixed axis placed at its second end, said second lever carrying a lug engaging in an oblong lumen of a part connected to the moving switch contact.
  • the operating mechanism comprises first and second stops limiting the travel of said second lever.
  • the axis of the first lever includes a lug to prevent the spring from passing beyond said axis.
  • the reference 1 designates a cutting blade articulated at a first end at the top of a first column 2 and carrying at its second end a contact hammer cooperating with a jaw placed at the top of a second column 3.
  • the hammer has an elongated section, so that in a given position, it is in tight contact with the jaw and that after a rotation of 90 degrees on itself, it loses contact with the jaw.
  • An operating mechanism makes it possible, under the action of a column 5 driven in rotation by a motor 6, to cause the blade 1, from a closed position of the disconnector, to first a rotation of the blade around itself to loosen the contact between the hammer and the jaw, then a rotational movement in a vertical plane.
  • This mechanism is well known and, as it does not directly relate to the invention, it will not be described in more detail. It will simply be noted that the rotational movement of the blade on itself is generally 90 degrees, and it is this value which will be taken as an example in the following.
  • the first end of the blade 1 is electrically connected to a first connector 7; the jaw is connected to a second connector 8.
  • FIG. 2 shows in more detail the jaw 9, which consists of several contact fingers 9A; the hammer 10, placed at the end of the blade 1, is extended by a sacrificial hammer 10A, which is consumable and consequently fixed to the hammer in a removable manner so that it can be replaced easily.
  • the sacrificial hammer 10A carries a scent ball 11.
  • the contact fingers 9A are connected to the connector 8.
  • the sacrificial hammer engages between two horns 13 and 14, in the form of rods each having a straight portion and a curved portion.
  • the horns are electrically connected to the connector by one of their ends.
  • the horns are separated from each other so as to remain one and the other in contact with the sacrificial hammer during an opening maneuver, until the sacrificial hammer exceeds the curved portions of the horns.
  • a spring 15 between the horns ensures sufficient pressure.
  • the horns are fixed to a metal console 16 itself in mechanical and electrical connection with the connector 8.
  • the horns 13 have at their base a conductive portion 13A and an insulating portion 13B adjacent to the portion 13A, then a metal portion 13C.
  • the horns 14 have at their base a conductive portion 14A in electrical contact by braids 17 and 18 with the console 16, then an insulating portion 14B and an insulating portion 14C.
  • the portions 13B and 14B are for example made of Teflon (R), insulating and resistant to the switching arc; the portions 14C are preferably made of epoxy resin, an insulating material but less costly than teflon (R).
  • a switch 20 preferably of the type comprising a vacuum interrupter 20A, the opening of which is controlled by a trigger arm 21 actuated by the movement of the sacrificial hammer 10A.
  • the lower terminal of the switch is electrically connected to the console 16, the other terminal is electrically connected to the portion 13C of the horn 13, by the braids 22 and 23.
  • the references 25 and 26 designate corona rings.
  • the switch operating device generally designated by the reference 29, is now described with reference to FIGS. 4 to 6.
  • the trigger arm 21 is extended by a first lever 30 pivoting about a fixed axis 31 located at one of its ends; the axis 31 carries a lug 31A; at the other end of the lever 30 is fixed a first end of a spring 32 whose other end is fixed at a first end of a second lever 33 pivoting about a fixed axis 34.
  • the lever 33 carries a lug 35 engaging in an oblong opening 36 of a part 37 secured to the movable contact of the vacuum interrupter.
  • the references 38 and 39 designate stops to limit the stroke of the lever 33.
  • the operating mechanism 29 is placed in a casing 40 through which the trigger arm 21 passes.
  • the blade 1 rotates 90 degrees along its axis, which has the effect of interrupting the flow of current between the hammer and the contact fingers.
  • the sacrificial hammer 10A which has a cylindrical section, ensures the passage of current by its contact with the horns 14.
  • the sacrificial hammer 10A When the blade 1 of the disconnector begins to lift, the sacrificial hammer 10A is in contact with the insulating portion 13 B of the horn 13. The current then passes between the connector 7, the blade 1, the hammer 10, the sacrificial hammer 10A, the horn 14 and the connector 8.
  • the sacrificial hammer When the blade 1 begins to run, the sacrificial hammer, after passing through a buffer zone where the current can flow through the switch and the elements 14A, 17, 18 and 16, reaches a position where it is in contact with the portion insulator 14B of the horn 14 and the conductive portion 13C of the horn 13; the current then flows between the connector 7, the blade 1, the hammer 10, the sacrificial hammer 10A, the portion 13C of the horn 13, the braid 23, the braid 22, the bulb 20A, the console 16 and the connector 8 .
  • the sacrificial hammer 10A continues its upward stroke, comes to drive the trigger arm 21, the movement of which produces the abrupt opening of the vacuum interrupter.
  • the operation of the operating mechanism 29 of the switch is as follows: the lever 30 secured to the arm 21 comes to tension the spring 32 and, after passing neutral, sets the lever 33 in motion.
  • the lug 35 after a certain stroke during which the lever 33 acquires a certain kinetic energy, comes strike the upper end of the oblong opening 36 of the part 37 and drive the latter over a stroke sufficient to open the switch.
  • the stop 39 serves to adjust the distance before impact of the lug 35 on the end of the oblong lumen 36 of the part 37, and, consequently, the energy accumulated by the crew. We can thus reach two millimeters in two milliseconds.
  • the lug 31A keeps the spring tensioned by preventing it from passing beyond the axis 31.
  • the stop 38 makes it possible to adjust the distance between the contacts of the vacuum cell, for example from 6 to 8 mm.
  • the device which has just been described therefore makes it possible to adjust the speed of opening of the contacts.
  • disconnector of the invention results from the fact that, unlike known type disconnector, the operating arm of the switch is not used to transmit the current.
  • the presence of ice on the sacrificial hammer 10A is not favorable to a frank contact, because the arm does not have sufficient pressure to break the ice and it is difficult to increase this pressure without penalize the opening of the disconnector, the operating mechanism of which is located at the other end of the blade.
  • horns 13 and 14 forming a clamp requires little mechanical energy for the operation of the disconnector, since the force of penetration of the hammer into the jaw is perpendicular to the pressure force exerted by the horns 13 and 14 on the hammer sacrificial 10A, therefore limited essentially by friction forces.
  • the sacrificial hammer shears the ice in its ascent or descent maneuver.
  • the invention applies to high voltage disconnectors and in particular to vertical displacement disconnectors.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Non-Flushing Toilets (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Keying Circuit Devices (AREA)
  • Push-Button Switches (AREA)
  • Organic Insulating Materials (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Sawing (AREA)
  • Crushing And Grinding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (4)

  1. Trennschalter mit einem Kontaktmesser (1), das an einem ersten Ende mit einem ersten Anschluß (7) und mit Mitteln verbunden ist, die in einer Öffnungsphase erst eine Drehung des Messers um sich selbst und dann eine Drehung um eine Achse ermöglichen, und das an seinem zweiten Ende einen Kontakthammer (10) aufweist, der mit einer mit einem zweiten Anschluß (8) verbundenen Backe (9) zusammenwirkt, wobei der Trennschalter Mittel (10A, 13, 14, 20, 21, 29) aufweist, damit bei einer Öffnungsbetätigung nach der Drehung des Messers (1), was die Stromunterbrechung zwischen Hammer (10) und Backe (9) bewirkt, der Strom zuerst abgeleitet und dann auf einen Schalter (20) umgeleitet wird, wobei dieser Schalter sich unter der Steuerung eines Betätigungsmechanismus (29) mit abrupter Unterbrechung öffnet, der durch die Verschiebung des Messers (1) gesteuert wird, dadurch gekennzeichnet, daß die Mittel einen sich abnutzenden Hammer (10A) aufweisen, der lösbar in der Verlängerung des Hammers (10) angeordnet ist und mit zwei Hörnern (13, 14) zusammenwirkt, zwischen die er sich einfügt und unter Reibung bewegt, daß eines der Hörner (13) einen isolierenden Abschnitt (13B) zwischen zwei metallischen Abschnitten (13A, 13C) aufweist, von denen einer (13A) mit dem zweiten Anschluß (8) und der andere (13C) mit einem Eingang des Schalters (20) verbunden ist, während das andere Horn (14) eine metallische Basis (14A) aufweist, die durch zwei isolierende Abschnitte (14B, 14C) verlängert wird, wobei die Basis mit dem zweiten Anschluß (8) verbunden ist, daß der sich abnutzende Hammer (10A) während eines Öffnungshubs einen Arm (21) bewegen kann, der den Betrieb des Betätigungsmechanismus (29) des Schalters (20) steuert, wobei die isolierenden Bereiche (13B, 14B) der Hörner (13, 14) gegenseitig versetzt sind, um die Umschaltung des Stroms vom sich abnutzenden Hammer (10A) zum Schalter (20) zu ermöglichen, wobei die zweite Klemme dieses Schalters mit dem zweiten Anschluß (8) verbunden ist.
  2. Trennschalter nach Anspruch 1, dadurch gekennzeichnet, daß der Betätigungsmechanismus (29) des Schalters (20) einen ersten Hebel (30) aufweist, der unter der Wirkung des Arms (21) um eine ortsfeste Achse (31) kippt, die an einem ersten Ende angeordnet ist, wobei eine Feder (32) einerseits am zweiten Ende des ersten Hebels (30) und andererseits an einem ersten Ende eines zweiten Hebels (33) befestigt ist, der um eine ortsfeste Achse (34) kippt, die an seinem zweiten Ende angeordnet ist, wobei der zweite Hebel (33) einen Zapfen (35) aufweist, der in eine längliche Öffnung (36) eines Bauteils (37) eindringt, das mit dem beweglichen Kontakt des Schalters verbunden ist.
  3. Trennschalter nach Anspruch 2, dadurch gekennzeichnet, daß der Mechanismus (29) einen ersten (38) und eine zweiten Anschlag (39) enthält, die den Hub des zweiten Hebels (33) begrenzen.
  4. Trennschalter nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß die Achse (31) des ersten Hebels (30) einen Zapfen (31A) besitzt, um die Feder (32) daran zu hindern, sich über diese Achse (31) hinaus zu bewegen.
EP92402751A 1991-04-10 1992-10-08 Trennschalter mit verbesserter Ausschaltleistung und mit vertikaler Öffnungsbewegung Expired - Lifetime EP0592742B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR9104346A FR2675304B1 (fr) 1991-04-10 1991-04-10 Sectionneur a pouvoir de coupure ameliore, notamment sectionneur a ouverture verticale.
US07/863,223 US5243159A (en) 1991-04-10 1992-04-03 Section or disconnect switch with an interrupter switch operated by the upward movement of the disconnect switch blade
CA002065509A CA2065509C (fr) 1991-04-10 1992-04-07 Sectionneur a pouvoir de coupure ameliore, notamment sectionneur a ouverture verticale
ES92402751T ES2101061T3 (es) 1991-04-10 1992-10-08 Seccionador con poder de interrupcion mejorado, principalmente seccionador con apertura vertical.
AT92402751T ATE153475T1 (de) 1991-04-10 1992-10-08 Trennschalter mit verbesserter ausschaltleistung und mit vertikaler öffnungsbewegung
DE69219893T DE69219893T2 (de) 1991-04-10 1992-10-08 Trennschalter mit verbesserter Ausschaltleistung und mit vertikaler Öffnungsbewegung
DK92402751.9T DK0592742T3 (da) 1991-04-10 1992-10-08 Ledningsadskiller med forbedret evne til afbrydelse, især ledningsadskiller med lodret åbning
EP92402751A EP0592742B1 (de) 1991-04-10 1992-10-08 Trennschalter mit verbesserter Ausschaltleistung und mit vertikaler Öffnungsbewegung
GR970402018T GR3024371T3 (en) 1991-04-10 1997-08-06 Isolator switch with improved breaking capacity and vertical opening movement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9104346A FR2675304B1 (fr) 1991-04-10 1991-04-10 Sectionneur a pouvoir de coupure ameliore, notamment sectionneur a ouverture verticale.
EP92402751A EP0592742B1 (de) 1991-04-10 1992-10-08 Trennschalter mit verbesserter Ausschaltleistung und mit vertikaler Öffnungsbewegung

Publications (2)

Publication Number Publication Date
EP0592742A1 EP0592742A1 (de) 1994-04-20
EP0592742B1 true EP0592742B1 (de) 1997-05-21

Family

ID=26132432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402751A Expired - Lifetime EP0592742B1 (de) 1991-04-10 1992-10-08 Trennschalter mit verbesserter Ausschaltleistung und mit vertikaler Öffnungsbewegung

Country Status (9)

Country Link
US (1) US5243159A (de)
EP (1) EP0592742B1 (de)
AT (1) ATE153475T1 (de)
CA (1) CA2065509C (de)
DE (1) DE69219893T2 (de)
DK (1) DK0592742T3 (de)
ES (1) ES2101061T3 (de)
FR (1) FR2675304B1 (de)
GR (1) GR3024371T3 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2691009B1 (fr) * 1992-05-11 1997-04-04 Gec Alsthom Engergie Inc Sectionneur a ouverture verticale et colonne oscillante.
FR2691008A1 (fr) * 1992-05-11 1993-11-12 Gec Alsthom Engergie Inc Sectionneur de terre à ouverture perpendiculaire.
FR2693835B1 (fr) * 1992-07-20 1994-10-07 Soule Sa Dispositif de coupure de ligne électrique à sectionneur dans l'air et interrupteur sous atmosphère contrôlée.
US5889248A (en) * 1997-09-08 1999-03-30 Abb Power T&D Company Inc. Operating mechanism for combined interrupter disconnect switch
US6936779B2 (en) * 2003-08-28 2005-08-30 Hubbell Incorporated Bypass recloser assembly
FR2970809B1 (fr) * 2011-01-25 2013-02-22 Schneider Electric Ind Sas Dispositif de coupure moyenne tension comprenant une ampoule a vide
CN109786167B (zh) * 2017-11-15 2023-04-07 株式会社东光高岳 隔离开关

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824936A (en) * 1955-01-31 1958-02-25 Ite Circuit Breaker Ltd Combined dual motion disconnect switch and interrupter attachment
US2897323A (en) * 1958-05-22 1959-07-28 Porter Co H K Switch means
US3171004A (en) * 1961-07-18 1965-02-23 Joslyn Mfg & Supply Co Mechanism and circuitry for high voltage switching
GB1156919A (en) * 1965-12-23 1969-07-02 Ass Elect Ind Improvements in and relating to Circuit Breakers

Also Published As

Publication number Publication date
GR3024371T3 (en) 1997-11-28
DE69219893D1 (de) 1997-06-26
ES2101061T3 (es) 1997-07-01
FR2675304A1 (fr) 1992-10-16
DK0592742T3 (da) 1997-06-16
DE69219893T2 (de) 1997-09-11
CA2065509A1 (fr) 1992-10-11
ATE153475T1 (de) 1997-06-15
FR2675304B1 (fr) 1994-04-08
EP0592742A1 (de) 1994-04-20
US5243159A (en) 1993-09-07
CA2065509C (fr) 1996-08-06

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