EP0026130A1 - Trennschalter für elektrische Wechselstromanlagen - Google Patents

Trennschalter für elektrische Wechselstromanlagen Download PDF

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Publication number
EP0026130A1
EP0026130A1 EP80401301A EP80401301A EP0026130A1 EP 0026130 A1 EP0026130 A1 EP 0026130A1 EP 80401301 A EP80401301 A EP 80401301A EP 80401301 A EP80401301 A EP 80401301A EP 0026130 A1 EP0026130 A1 EP 0026130A1
Authority
EP
European Patent Office
Prior art keywords
flexible metal
contact
fixed
blades
metal blade
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.)
Withdrawn
Application number
EP80401301A
Other languages
English (en)
French (fr)
Inventor
Georges Maury
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.)
Dauphinoise de Constructions Electro Mecaniques SAS
SNCF Mobilites
Original Assignee
Dauphinoise de Constructions Electro Mecaniques SAS
SNCF Mobilites
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 Dauphinoise de Constructions Electro Mecaniques SAS, SNCF Mobilites filed Critical Dauphinoise de Constructions Electro Mecaniques SAS
Publication of EP0026130A1 publication Critical patent/EP0026130A1/de
Withdrawn legal-status Critical Current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
    • H01H33/123—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement
    • H01H33/124—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement the auxiliary contact being a whip contact

Definitions

  • the present invention relates to a disconnect device for alternating current electrical installations, of the snap type and more particularly to an improved snap device for disconnector using the cut in the air.
  • disconnecting devices In medium, high and very high ac alternating current electrical installations, disconnecting devices are used whose purpose is to isolate part of the installation from the rest of the network, in order to de-energize it. These disconnecting devices are capable of cutting currents of a few tens of amperes with a power factor less than or equal to 0.1, or of interrupting load currents of a few hundred amperes.
  • the present invention relates to a sectioning device using the cut in the air.
  • the performance of such devices depends, during the opening operation, on the elongation of the electric arc and the speed of separation of the contacts, avoiding ionization of the interval between the contacts.
  • the subject of the invention is a device which makes it possible to substantially increase these two factors, thereby bringing an improvement to the performance of air disconnecting devices.
  • the breaking capacity is a function of the speed of movement of the single movable element.
  • the circuit breaker in the air for alternating current, of the snap type in accordance with the invention comprises two main contacts, at least one of which is movable, each comprising a movable auxiliary contact constituted by a flexible metal blade, the l '' is mounted on a support integral with one of the main contacts while the other is fixed on the second main contact, the two blades being arranged so that one can drive the other on an angle of rotation determined.
  • the device comprises a fixed contact and a movable contact, each of these two contacts comprising an auxiliary movable contact.
  • the auxiliary contact of the fixed contact consists of a flexible metal rod, comprising at its end a hook, mounted on an arm secured to the fixed contact, while the movable contact carries as auxiliary contact a flexible metal blade, mounted in its extension, of which the end can engage the hook-shaped end of the flexible rod of the fixed contact to drive it at a determined angle.
  • the movable main contact When the movable main contact is actuated, with a view to obtaining the cut-off, it drives with it the flexible rod which is integral therewith, this driving the flexible rod integral with the fixed element in the end of which it is engaged , until there is separation of the two ends of the flexible rods. From this moment, the flexible rod secured to the movable contact is recalled at speed V1, and the flexible rod secured to the fixed contact recalled at speed V2, V1 and V2 being in the opposite direction; the separation therefore takes place at the relative speed V1 + V2.
  • one of the main contacts is constituted by an arm movable by rotation in a plane and carries a flexible metal blade fixed by its base, making with the plane of rotation of the arm an angle close to 90 °.
  • the flexible blade of the other main contact is mounted by its upper end at the top of an axis around which it can rotate, in a vertical position, its free lower end carrying a hook capable of driving the other flexible blade.
  • the two main contacts are constituted by two arms rotating in the same plane around two parallel axes.
  • One of the arms carries an axis perpendicular to the plane of rotation, at the top of which is mounted a flexible metal blade substantially vertical, by its upper end so that it can rotate around the axis, while on the second arm is fixed a flexible metal blade substantially vertical, fixed to the arm by its base.
  • This embodiment of the invention is particularly suitable for three-pole devices.
  • conventional devices with auxiliary contacts when a flexible rod relaxes, its movement involves it in a trajectory such that it risks being for a brief instant near a neighboring pole and consequently the horizontal displacement of a flexible blade has the disadvantage of reducing the real distance of insulation between poles and of stretching the cutting arc towards the neighboring pole.
  • the two main contacts when the two main contacts are set in motion according to opposite rotations, the two flexible blades retain each other and move away from their equilibrium positions until the contact is suddenly broken. They are then brought back to their respective equilibrium positions according to return movements in substantially vertical planes, and thus remain away from the other poles of the apparatus during their oscillations around equilibrium.
  • FIG. 1 is presented a known device comprising an auxiliary contact G secured to the fixed main contact D, and an auxiliary contact constituted by a flexible metal rod H secured to the movable main contact F, the separation of H and G taking place according to the single return speed of the flexible metal rod H against the arm F.
  • FIG. 2 is shown schematically the device of the invention comprising the main fixed 1 and movable contacts 2. From the fixed contact 1 is secured an auxiliary arm 3 (the presence of this auxiliary arm being given by way of example and not being not limiting of the invention) which is also integral with a flexible metal rod 4 the end of which is formed as a hook 5 (the hook shape not being limiting of the invention), the flexible rod 4 being recalled at speed V2 in its initial position against the arm 3 by a spring 6.
  • auxiliary arm 3 the presence of this auxiliary arm being given by way of example and not being not limiting of the invention
  • a flexible metal rod 4 the end of which is formed as a hook 5 (the hook shape not being limiting of the invention)
  • the flexible rod 4 being recalled at speed V2 in its initial position against the arm 3 by a spring 6.
  • the movable main contact 2 is integral with a flexible metal rod 7 engaged, from the closed position, in the end hook 5 of the flexible rod 4.
  • the snap disconnect device shown in Figure 3 includes a first main contact 8 and a second main contact 9.
  • the arm 8 is movable by rotation about an axis 10 at one of its ends.
  • an axis 11 perpendicular to the arm 8 At the other end is mounted an axis 11 perpendicular to the arm 8, at the top of which is placed a flexible metal blade 12 on its support 13.
  • This support 13 can rotate freely around the axis 11; the blade 12 can also rotate at a certain angle around its attachment 14 with an axis perpendicular to the axis 11, the end of the metal blade being wound around the support 14 to spring so that the tension of the spring when we move the blade aside, bring it back to its vertical equilibrium position.
  • the free end 15 of the blade 12 is in the form of a hook.
  • the arm 9 of the second main contact is movable by rotation about the axis 16 and carries a flexible metal blade 17 raised relative to the horizontal by an angle of about 80 °, and engaging in the hook 14 of the blade 12. In the equilibrium position, the blade 17 and the arm 9 define a substantially vertical plane.
  • the rotation of the support 13 of the blade 12 can be limited in the usual way by a stop (not shown) fixed on the axis 11.
  • a torsion spring can be provided to bring the support 13 back into its equilibrium position where the blade 12 rotates around its attachment 14 takes place in the vertical plane of the arm 8 and of the axis 11.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
EP80401301A 1979-09-12 1980-09-11 Trennschalter für elektrische Wechselstromanlagen Withdrawn EP0026130A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7922742 1979-09-12
FR7922742A FR2468988A1 (fr) 1979-09-12 1979-09-12 Dispositif de sectionnement pour installations electriques a courant alternatif

Publications (1)

Publication Number Publication Date
EP0026130A1 true EP0026130A1 (de) 1981-04-01

Family

ID=9229579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401301A Withdrawn EP0026130A1 (de) 1979-09-12 1980-09-11 Trennschalter für elektrische Wechselstromanlagen

Country Status (4)

Country Link
EP (1) EP0026130A1 (de)
BE (1) BE885191A (de)
FR (1) FR2468988A1 (de)
IT (1) IT1136497B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU168420U1 (ru) * 2016-02-16 2017-02-02 Акционерное общество "Научно-исследовательский и проектно-конструкторский институт высоковольтного аппаратостроения (АО "НИИВА") Многоамперный разъединитель

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709739A (en) * 1952-02-27 1955-05-31 Usco Power Equipment Corp Center break disconnect switch contacts
US2750460A (en) * 1952-12-12 1956-06-12 Ite Circuit Breaker Ltd Quick break attachment for high voltage disconnecting switches
US2849578A (en) * 1955-10-10 1958-08-26 Joslyn Mfg & Supply Co High voltage switch
US3005063A (en) * 1959-02-27 1961-10-17 Kearney James R Corp Self-aligning switch
US3230324A (en) * 1963-12-05 1966-01-18 Tomlinson F Johnson Quick break arc horn for horizontally opening air break switches
FR1536437A (fr) * 1967-07-06 1968-08-16 Alsthom Cgee Sectionneur à dispositif de coupure de petits courants
FR2041624A5 (de) * 1969-05-16 1971-01-29 Elect Meca Const

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709739A (en) * 1952-02-27 1955-05-31 Usco Power Equipment Corp Center break disconnect switch contacts
US2750460A (en) * 1952-12-12 1956-06-12 Ite Circuit Breaker Ltd Quick break attachment for high voltage disconnecting switches
US2849578A (en) * 1955-10-10 1958-08-26 Joslyn Mfg & Supply Co High voltage switch
US3005063A (en) * 1959-02-27 1961-10-17 Kearney James R Corp Self-aligning switch
US3230324A (en) * 1963-12-05 1966-01-18 Tomlinson F Johnson Quick break arc horn for horizontally opening air break switches
FR1536437A (fr) * 1967-07-06 1968-08-16 Alsthom Cgee Sectionneur à dispositif de coupure de petits courants
FR2041624A5 (de) * 1969-05-16 1971-01-29 Elect Meca Const

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU168420U1 (ru) * 2016-02-16 2017-02-02 Акционерное общество "Научно-исследовательский и проектно-конструкторский институт высоковольтного аппаратостроения (АО "НИИВА") Многоамперный разъединитель

Also Published As

Publication number Publication date
BE885191A (fr) 1980-12-31
IT1136497B (it) 1986-08-27
FR2468988B1 (de) 1982-02-26
FR2468988A1 (fr) 1981-05-08
IT8083430A0 (it) 1980-09-11

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE GB SE

17P Request for examination filed

Effective date: 19810722

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19820621

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MAURY, GEORGES