US3036168A - Disconnecting switch - Google Patents

Disconnecting switch Download PDF

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Publication number
US3036168A
US3036168A US42413A US4241360A US3036168A US 3036168 A US3036168 A US 3036168A US 42413 A US42413 A US 42413A US 4241360 A US4241360 A US 4241360A US 3036168 A US3036168 A US 3036168A
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United States
Prior art keywords
contact
pivot axis
contact element
turnable
turning
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
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US42413A
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English (en)
Inventor
Bagnagatti Virginio
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Individual
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Individual
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Publication of US3036168A publication Critical patent/US3036168A/en
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    • 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
    • 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

Definitions

  • This invention relates to a disconnecting switch of the pantograph type adapt for the connection of high tension electric lines, and more particularly to an improved rotating contact device for said disconnecting switches.
  • An object of the invention is to provide an improved device for the engaging of the various parts of the current carrying conductors which will be capable to compensate and absorb the transversal and vertical oscillations to which are usually subjected the upper suspended high tension conductors.
  • Another object of the invention is to provide a novel form of mechanic and electric connection between the high tension conductors and the elements of the pantograph type disconnecting switch which is not disturbed by the oscillations of the movable arms of the pantograph and this in order to assure the electric contact continuity.
  • Another object of the invention is to provide a new and novel mechanic connection between the high tension conductors and the panotgraph type elements, in which a continuous external action upon the pantographs arms is not needed and this in order to maintain the mechanic and, therefore, electric contact between the various engaging parts.
  • Said known disconnecting switches present several disadvantages and above all they do not guarantee a continuous and safe electric contact.
  • the present invention mainly consists in a disconnecting switch of the pantograph type adapted for the connection of high tension electric lines, which comprises at least two conductor bars laying and movable over two planes between them different and parallel, each bar being head fixed and projecting from the upper end of one of the two movable arms of the pantograph, and a contact mounted turnably around its vertical axis and vertically oscillating in an elastic manner into a support secured to the upper conductor or conductors of the high tension electric line, in order that said rotating contact can be rotated of about 90 and engaged, when the disconnecting switch is closed, by the two conductor bars.
  • the rotating contact is electrically connected to the upper suspended conductors of the high tension electric line while the conductor bars are electrically connected to the arms of the pantograph and, through said arms, to the conductor of the shunt line in order to obtain the flow of the current, when the switch is closed, from the upper to the shunt line conductors.
  • the rotating contact is constituted by a plurality of lamellar contacts, more or less springed, which are provided with a large contact surface.
  • the rotating contact is kept in a rest position by one or more return springs, said springs helping also to keep, when the disconnecting switch is closed, the contact between the rotating contact and the conductor bars of the movable arms of the pantograph.
  • FIGURE 1 is a frontal view illustrating the disconnecting switch in closed position and in its whole;
  • FIGURE 2 is a side view illustrating the disconnecting switch in closed position in its whole
  • FIGURE 3 is a fragmentary view illustrating the improved rotating contact of the disconnecting switch of FIGURE 1, in opened position and with the pantograph in its final closing period;
  • FIGURE 4 is a fragmentary view illustrating the improved rotating contact in closed position
  • FIGURE 5 is a fragmentary view of theupper part of the pantograph showing the position of the conductor bars when the disconnecting switch is in a full open position;
  • FIGURE 6 is a fragmentary plan View showing the improved rotating contact in opened position
  • FIGURE 7 is a fragmentary plan view showing the rotating in closed position
  • FIGURE 8 is a fragmentary view of a different embodiment of the rotating contact in closed position.
  • a disconnecting switch provided with arms 2 and 2 movable in an upward rising direction.
  • the conductor bars 3 On the upper arm 2 of the contact members or pantograph are head fixed the conductor bars 3 upwardly projecting; on the other arm 2' are identically fixed the conductor bars 4.
  • Said conductor bars 3 and 4 lay over two different planes, between them parallel, and are electrically connected, through arms 2 and 2' of the pantograph, to the conductor or conductors of the shunt line 8'.
  • the upper suspended conductors of the high tension main electric line are indicated with 8 and carry thereon overhung the contact element or rotating contact 5 which is formed by a plurality of blades superposed and opposed, conductors 8 are electrically connected to blades 5' by means plate 13, electric wires 14 which pass through shaft 6.
  • Said rotating contact is mounted over the shaft 6 which is turnable around its vertical axis and sliding inside the support 7 connected to the conductors 8 so that the contact 5 can move in a vertical direction, against the counter action of spring 9, inside said support 7.
  • the device operate as follows:
  • the bars 3 and 4 operate against the contact 5 as a non-cutting scissors; the counter-action of springs 10 determines the electric contact continuity between blades 5 of contact 5 and conductor bars 3 and 4 when in closed final position; in said closed position the bars 3 and 4 do not act with any force against the contact 5.
  • the disposition and orientation of the bars, when the disconnecting switch is closed, may be changed by assuming a crossed position (FIGURE 8) or by providing a different number of bars without changing the main characteristics of the present invention.
  • a turnable contact element comprising: means for supporting said contact element turnably about a first pivot axis for turning movements from an inoperative position into at least one operative turned position; biasing means permanently tending to turn said turnable contact element from said operative to said inoperative position thereof; a contact arrangement for engaging said contact element, said contact arrangement including two elongated contact members mounted for turning relative to each other about a second pivot axis normal'to and passing through said first pivot axis, said elongated contact members being spaced from each other in the direction of said second pivot axis and located on opposite sides thereof, means for turning said elongated contact members about said second pivot axis so that the same engage said turnable contact element on opposite sides thereof and, upon actuation of said turning means, turn said turnable contact element from its inoperative to its operative position against the action of said biasing means, closely engaging said movable contact element in such operative position.
  • a turnable contact element in combination, a turnable contact element; means for supporting said contact element turnably about a first pivot axis for turning movements from an inoperative position into at least one operative turned position and reciprocably along said first pivot axis between a normal rest position and a position of maximum displacement; biasing means permanently tending to turn said turnable contact element from said operative to said inoperative position thereof; a contact arrangement for engaging said contact element, said contact arrangement including two elongated contact members mounted for turning relative to each other about a second pivot axis normal to and passing through said first pivot axis, said elongated contact members being spaced from each other in the direction of said second pivot axis and located on opposite sides thereof, means for turning said elongated contact members about said second pivot axis so that the same engage said turnable contact element on opposite sides thereof tending thereby to displace said contact element along said first pivot axis from said normal rest position thereof and, upon actuation of said turning means, turns said turnable connation, a turnable
  • a turnable contact element having at least two sides spaced from each other; means for supporting said contact element turnably about a first pivot axis for turning bars mounted for turning relative to each other about a second pivot axis normal to and passing through said first pivot axis, said elongated contact members being spaced from each other a distance substantially equal to the spacing between the two sides of said contact element in the direction of said second pivot axis and located on opposite sides thereof, means for turning said elongated contact members about said second pivot axis so that the same engage said turnable contact element on said two spaced sides thereof and, upon actuation of said turning means, turn said turnable contact eelment from its inoperative to its operative position against the action of said biasing means, closely engaging said sides of said movable contact element in such operative position.
  • a turnable contact element having at least two sides spaced and resiliently biased from each other; means for supporting said contact element turnably about a first pivot axis for turning movements from an inoperative position into at least one operative turned position; spring means permanently tending to turn said turnable contact element from said operative to said inoperative position thereof; a contact arrangement for engaging said contact element, said contact arrangement including two elongated contact members mounted for turning relative to each other about a second pivot axis normal to and passing through said first pivot axis, said elongated contact members being spaced from each other a distance substantially equal to the greatest spacing between the two sides of said contact element in the direction of said second pivot axis and located on opposite sides thereof, means for turning said elongated contact members about said second pivot axis so that the same engage said turnable contact element on said two spaced sides thereof and, upon actuation of said turning means, turn said turnable contact element from its inoperative to its operative position against the action of said biasing means, closely
  • a turnable contact element in combination, a turnable contact element; resiliently suspended means for supporting said contact element turnably about a first pivot axis for turning movements from an inoperative position into at least one operative turned position; biasing means permanently tending to turn said turnable contact element from said operative to said inoperative position thereof; a contact arrangement for engaging said contact element, said contact arrangement including two elongated contact members mounted for turning relative to each other about a second pivot axis normal to and passing through said first pivot axis, said elongated contact members being spaced from each other in the direction of said second pivot axis and located on opposite sidis thereof, means comprising extendable and retractable arms for turning said elongated contact members about said second pivot axis so that the same engage said turnable contact element on opposite sides thereof and, upon actuation of said turning means, turn said turnable contact element from its inoperative to its operative posi- 6 tion against the action of said biasing means, closely engaging said movable contact element in such operative position.
  • a turnable contact element in combination, a turnable contact element; resiliently suspended means for supporting said contact element turnably about a first pivot axis for turning movements from an inoperative position into at least one operative turned position; biasing means permanently tending to turn said turnable contact element from said operative to said inoperative position thereof; a contact arrangement for engaging said contact element, said contact arrangement including two elongated contact members mounted scissors-like for turning relative to each other about a second pivot axis normal to and movable along said first pivot axis, said elongated contact members being spaced from each other in the direction of said second pivot axis and located on opposite sides thereof, means comprising arms movable from a retracted position in which said arms are folded on themselves to a position in which said arms are fully extended for turning said elongated contact members about said second pivot axis so that the same engage said turnable contact element on opposite sides thereof and, upon actuation of said turning means, turn said turnable cont-act element from its inoperative to its operative position against
  • a turnable contact element means for turnably supporting said contact element about a first pivot axis for angular movement from an inoperative position into an operative position; means for permanently biasing said contact element into said inopenative position; a contact arrangement for engaging said contact element, including at least two elongated contact members turnable relative to each other about a second pivot axis perpendicular to and passing through said first pivot axis, said elongated contact members being spaced from each other in the direction of said second pivot axis and located on opposite sides thereof, means for turning said contact members about said second pivot axis so that the contact members engage said contact element at opposite sides thereof and, upon actuation of said turning means, turn said contact element from its inoperative to its operative position against action of said biasing means, said contact members engaging substantial portions of the respective sides of said contact element when the latter is turned to said operative position.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)
US42413A 1959-07-18 1960-07-12 Disconnecting switch Expired - Lifetime US3036168A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1212959 1959-07-18

Publications (1)

Publication Number Publication Date
US3036168A true US3036168A (en) 1962-05-22

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ID=11139467

Family Applications (1)

Application Number Title Priority Date Filing Date
US42413A Expired - Lifetime US3036168A (en) 1959-07-18 1960-07-12 Disconnecting switch

Country Status (6)

Country Link
US (1) US3036168A (xx)
BE (1) BE592823A (xx)
CH (1) CH381298A (xx)
DE (1) DE1106835B (xx)
FR (1) FR1262500A (xx)
NL (1) NL253677A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015368U (xx) * 1973-06-08 1975-02-18
US4504708A (en) * 1982-03-17 1985-03-12 Ruhrtal-Elektrizitatsgesellschaft Hartig Gmbh & Co. Disconnect switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605370A (en) * 1949-01-29 1952-07-29 Licentia Gmbh Disconnecting switch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938798C (de) * 1942-10-21 1956-02-09 Aeg Trennschalter fuer Hoch- und Hoechstspannungsschaltanlagen
FR1055382A (fr) * 1952-05-03 1954-02-18 Parisienne Pour L Ind Electr S Sectionneur à pinçage
FR1100853A (fr) * 1954-03-04 1955-09-26 Comp Generale Electricite Sectionneur à pantographe
CH320539A (de) * 1954-06-09 1957-03-31 Bbc Brown Boveri & Cie Trennschalter der Säulenbauart
FR67433E (fr) * 1955-01-17 1958-03-07 Parisienne Pour L Ind Electr S Sectionneur à pinçage
DE1768269U (de) * 1955-09-07 1958-06-12 Siemens Ag Trennschalter.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605370A (en) * 1949-01-29 1952-07-29 Licentia Gmbh Disconnecting switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015368U (xx) * 1973-06-08 1975-02-18
JPS5311814Y2 (xx) * 1973-06-08 1978-03-30
US4504708A (en) * 1982-03-17 1985-03-12 Ruhrtal-Elektrizitatsgesellschaft Hartig Gmbh & Co. Disconnect switch
US4564731A (en) * 1982-03-17 1986-01-14 Ruhrtal-Elektrizitatsgesellschaft Hartig Gmbh & Co. Scissor-type disconnect switch with contact elements having wear-resistant armatures

Also Published As

Publication number Publication date
FR1262500A (fr) 1961-05-26
DE1106835B (de) 1961-05-18
BE592823A (fr) 1960-10-31
NL253677A (xx)
CH381298A (it) 1964-08-31

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