US3755634A - Single pillar isolator switch - Google Patents

Single pillar isolator switch Download PDF

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Publication number
US3755634A
US3755634A US00223924A US3755634DA US3755634A US 3755634 A US3755634 A US 3755634A US 00223924 A US00223924 A US 00223924A US 3755634D A US3755634D A US 3755634DA US 3755634 A US3755634 A US 3755634A
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US
United States
Prior art keywords
contact
counter
bars
isolator switch
tong
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
US00223924A
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English (en)
Inventor
S Bachler
S Akervall
S Wallenstein
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E A AS
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E A AS
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Filing date
Publication date
Application filed by E A AS filed Critical E A AS
Application granted granted Critical
Publication of US3755634A publication Critical patent/US3755634A/en
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
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/34—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact adapted to engage an overhead transmission line, e.g. for branching
    • H01H31/36—Contact moved by pantograph

Definitions

  • ABSTRACT In a high voltage isolator switch of the pantograph type, a movable contact of the pivoted tong type cooperates with a counter-contact in the form of a rod suspended vertically from an overhead line. This rod is adapted to be gripped by two substantially horizontally directed elongated contact bars carried by the movable contact.
  • the counter-contact may be provided with longitudinally extending current collecting strips, two on one face and one on the other face.
  • a downwardly-open guiding means secured to the counter-contact guides the contact bars into engagement with the countercontact.
  • the present invention relates to an isolator switch having a tong-like contact movable in a vertical plane and supported by an insulator, said contact cooperating with a counter-contact intended to be suspended from an overhead line.
  • the counter-contact normally consists of a horizontal copper rod which is connected to the bus-bar above by means of flexible connections at both ends.
  • the movable isolator tong grips said copper rod with a force determined by a torque generated by the driving means of the isolator tong.
  • the object of the present invention is to achieve a solution of the problems mentioned above and associated problems with isolator switches of the type described in single pillar isolator switch.
  • This is achieved by providing a single pillar isolator switch which is characterised in that the counter-contact consists of at least one rodshaped body suspended vertically from the overhead line and arranged in the closed position of the isolator switch to be gripped by two elongated contact bars carried by the tong-shaped contact, said bars being directed substantially horizontally, and thus perpendicularly to the direction of their motion produced by the action of the tong contact.
  • This type of contact arrangement ensures that the contact point will always be at a specified distance from the upper joint of the tong, thus ensuring continued contact pressure at the different levels which the counter-contact may assume.
  • tong contact is constructed of two parallel tong-shaped elements, joined at the top by two cross-pieces which at the same time constitute the contact bars mentioned above.
  • the rod-shaped counter-contact In order to obtain reliable and specific contact points it is suitable for the rod-shaped counter-contact to be shaped as a rectangular bar on which three current collector strips are attached, two strips being arranged on one broad side of the bar and one strip on the opposite broad side.
  • the contact surfaces of the contact bars of the tong contact which cooperate with the strips should preferably be rounded.
  • An isolator switch according to thepresent invention can very well be constructed with the contact bars of the tong contact placed below the upper joint of the contact.
  • An important advantage with this arrangement is that, when the isolator switch is open, the contact surfaces of the bars face downwardly so that these surfaces are protected from dirt and snow.
  • Another advantage is that the current path ends before the joint, thus eliminating the difficulty of placing the joint in the middle of the current path.
  • the contact arrangement according to the invention also makes it possible to guide the tong contact towards the counter-contact in a relatively simple manner by placing a number of gripping arms in a bell-shaped arrangement around the vertical, rod-shaped countercontact, the arms being arranged to cooperate with guiding yokes attached on the upper part of the tong contact.
  • the gripping arms arranged around the countercontact can also be used with advantage as carrier members for a field equalizing ring.
  • FIG. 1 shows schematically in perspective a pole of a first embodiment of a single pillar isolator switch according to the invention.
  • FIG. 2 shows a contact means for such an isolator switch, seen from above.
  • FIGS. 3 and 4 show two side views perpendicular to each other of a second embodiment of a single pillar isolator switch according to the invention.
  • FIGS. 5, 6 and 7 show from the side and from above an isolator switch of the type shown in FIGS. 3-4 provided with guiding means.
  • the isolator according to FIG. 1 comprises a movable contact in the form of a double tong consisting of two parallel, tong-shaped elements 1 and 2 which, above the upper joints 3 and 4, are connected by means of two cross-pieces 5 and 6, simultaneously acting as contact bars. These contact bars cooperate with a counter-contact 7 suspended from an overhead line which forms a bus-bar in a switchgear station.
  • the counter-contact 7 consists of a vertically suspended rod-shaped body.
  • the gripping contact 1,2 is fitted on a driving means 10 supported by a support insulator 9, a terminal bar, not'shown, being arranged on this driving means for an out-going conductor.
  • FIG. I shows the isolator switch during an operating movement where the contact bars 5,6 are on their way to the closed position, in which the contact bars clamp the counter-contact 7 hanging down between them.
  • the rod-shaped counter-contact 7 consists of a bar or plate on which three longitudinal copper strips 12 having, for example, semi-circular cross-section are attached. Two of the strips are arranged on one side of the bar and one of the other side. Since the bar 7 is relatively long and attached to the overhead line 8 so that it can swing easily, it can adjust itself so that all three strips receive some of the contact force (although not equally distributed) when the two contact bars and 6 on the tong contact clamp around the counter-contact 7. The contact 7 can easily be increased to double capacity if two bars are placed beside each other as shown in FIG. 2. The bars in the counter-contact 7 are then turned so that each of the contact bars 5 and 6 makes contact with three current collector strips 12. As shown in FIG. 2, all the contact points partake of the contact force even if the contact bars 5 and 6 become curved because of the load from the arms of the tong contact 1,2, symbolised by arrows.
  • the isolator switch shown in FIGS. 5 7 is provided with a substantially square field equalizing ring 13 which is attached by four support arms 14 to the upper part of the counter-contact 7.
  • the support arms 14 are designed so that, together with two guiding yokes 15 1 and 16 attached to the upper part of the tong elements 1,2, they guide the counter-contact 7 towards the contact bars 5 and 6.
  • the tong contact 1,2 need not necessarily be in the form of a double tong.
  • the main thing is that the horizontal contact bars 5 and 6 are sufficiently long.
  • isolator switch comprising a counter-contact in the form of an elongated body adapted to be suspended vertically from an overhead line, an insulating base, a pair of elongated contact bars, and tong-type mounting means carrying said bars above the base on opposite sides of the countencontact for movement towards and from each other to clamp the counter-contact therebetween, said bars extending in directions substantially perpendicular to such movement and being positioned below the upper joint of said mounting means.
  • isolator switch as claimed in claim 4 having two counter-contacts engageable between the contact bars.
  • isolator switch as claimed in claim 1, having a field equalizing ring and support members connected to said counter-contact remote from its lower end extending outwardly and downwardly therefrom and supporting said ring, said tong-type mounting means including guiding members adjacent said contact bars and engageable during upward movement with the support members to guide the contact bars into position to clamp the counter-contact between them

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
US00223924A 1971-02-12 1972-02-07 Single pillar isolator switch Expired - Lifetime US3755634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE01847/71A SE349891B (de) 1971-02-12 1971-02-12

Publications (1)

Publication Number Publication Date
US3755634A true US3755634A (en) 1973-08-28

Family

ID=20258946

Family Applications (1)

Application Number Title Priority Date Filing Date
US00223924A Expired - Lifetime US3755634A (en) 1971-02-12 1972-02-07 Single pillar isolator switch

Country Status (7)

Country Link
US (1) US3755634A (de)
CA (1) CA946893A (de)
DE (1) DE2204760C3 (de)
FR (1) FR2125391A1 (de)
GB (1) GB1373585A (de)
IT (1) IT949051B (de)
SE (1) SE349891B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205909A1 (de) * 1981-02-19 1982-10-28 Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen Trennschalter, insbesondere einsaeulentrennschalter
US4504708A (en) * 1982-03-17 1985-03-12 Ruhrtal-Elektrizitatsgesellschaft Hartig Gmbh & Co. Disconnect switch
CN100350531C (zh) * 2005-08-05 2007-11-21 王光顺 双断口折叠式垂直分合隔离开关
CN103620717A (zh) * 2011-06-17 2014-03-05 西门子公司 露天开关装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048795A1 (de) * 1980-12-23 1982-07-15 Brown, Boveri & Cie Ag, 6800 Mannheim Gegenkontakt fuer einen scherentrenner
DE3124805C2 (de) * 1981-06-24 1983-05-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einsäulen-Trennschalter
DE3732004A1 (de) * 1987-09-23 1989-04-06 Asea Brown Boveri Hochspannungs-trennschalter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126960B (de) * 1959-08-21 1962-04-05 Elektro Watt Elek Sche Und Ind Federnde Kontaktschlaufe mit Gegenkontaktstueck fuer einen Pantographen-Trennschalter, die zum Ausgleich des Durchhanges im Zuge der Sammelschienenseile elektrischer Hochspannungsschaltanlagen angeordnet ist
FR1356187A (fr) * 1962-05-09 1964-03-20 D App Electr Sprecher Et Schuh Sectionneur à colonne unique pour installation à haute tension
US3530265A (en) * 1969-05-28 1970-09-22 Ite Imperial Corp Shielding for vertical break switches of high voltage rating
SE455910B (sv) * 1980-03-14 1988-08-15 Singer Co Hastighetsreglersystem for gyroskop

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126960B (de) * 1959-08-21 1962-04-05 Elektro Watt Elek Sche Und Ind Federnde Kontaktschlaufe mit Gegenkontaktstueck fuer einen Pantographen-Trennschalter, die zum Ausgleich des Durchhanges im Zuge der Sammelschienenseile elektrischer Hochspannungsschaltanlagen angeordnet ist
FR1356187A (fr) * 1962-05-09 1964-03-20 D App Electr Sprecher Et Schuh Sectionneur à colonne unique pour installation à haute tension
US3530265A (en) * 1969-05-28 1970-09-22 Ite Imperial Corp Shielding for vertical break switches of high voltage rating
SE455910B (sv) * 1980-03-14 1988-08-15 Singer Co Hastighetsreglersystem for gyroskop

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205909A1 (de) * 1981-02-19 1982-10-28 Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen Trennschalter, insbesondere einsaeulentrennschalter
US4504708A (en) * 1982-03-17 1985-03-12 Ruhrtal-Elektrizitatsgesellschaft Hartig Gmbh & Co. Disconnect switch
CN100350531C (zh) * 2005-08-05 2007-11-21 王光顺 双断口折叠式垂直分合隔离开关
CN103620717A (zh) * 2011-06-17 2014-03-05 西门子公司 露天开关装置
CN103620717B (zh) * 2011-06-17 2016-11-09 西门子公司 露天开关装置

Also Published As

Publication number Publication date
DE2204760A1 (de) 1972-08-17
SE349891B (de) 1972-10-09
DE2204760C3 (de) 1975-06-19
CA946893A (en) 1974-05-07
GB1373585A (en) 1974-11-13
FR2125391A1 (de) 1972-09-29
IT949051B (it) 1973-06-11
DE2204760B2 (de) 1974-11-07

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