EP0189689A1 - Elektrischer Schalter mit Blende - Google Patents

Elektrischer Schalter mit Blende Download PDF

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Publication number
EP0189689A1
EP0189689A1 EP85402426A EP85402426A EP0189689A1 EP 0189689 A1 EP0189689 A1 EP 0189689A1 EP 85402426 A EP85402426 A EP 85402426A EP 85402426 A EP85402426 A EP 85402426A EP 0189689 A1 EP0189689 A1 EP 0189689A1
Authority
EP
European Patent Office
Prior art keywords
screen
arc
switching device
switch
movable 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
EP85402426A
Other languages
English (en)
French (fr)
Other versions
EP0189689B1 (de
Inventor
Elie Belbel
André Haury
Christian Blanchard
Michel Lauraire
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique 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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Priority to AT85402426T priority Critical patent/ATE44110T1/de
Publication of EP0189689A1 publication Critical patent/EP0189689A1/de
Application granted granted Critical
Publication of EP0189689B1 publication Critical patent/EP0189689B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts

Definitions

  • the invention relates to a screen switch device having, on the one hand, two contact parts movable with respect to each other between a closed state where the contact pads touch each other, and an open state where the pads are separated and, on the other hand, an insulating screen which is rapidly interposed between the pellets by performing from a starting position towards a working position, a movement during which the arc appearing at the opening is moved by an active edge of the screen and at the end of which the arc is completely destabilized.
  • Electric switches are already known using arc deflector devices, which take the form of horns placed in the vicinity of the contact pads on the free ends of the contact parts, and which have, with respect to the general direction of these parts , a change of orientation such as the natural development of the arc effected under the effect of electro-dynamic repulsion forces, brings the feet of these arcs on these horns and consequently avoids their parking on said pellets.
  • the orientations, curvatures, shapes or positions given to these horns are essentially based on the assumption that the current flowing in the arc is high enough for this development to be possible 1 the same measurements can be taken if a development or a swelling of the arc is assisted by the presence of a local magnetic field, which can be induced or permanent and which is suitably oriented to favor the speed of displacement.
  • the desired increase in the arc voltage results from its elongation, while the fact of installing the feet of these arcs on the horns avoids consumption of the noble metal of the contact pads; in these known devices, the orientations of these horns are generally divergent.
  • the invention therefore proposes to bring to a screen switch, the general constitution of which corresponds to that which is mentioned above, improvements capable of considerably reducing the wear of the contact pads and, consequently, practically eliminating the drawbacks which result therefrom, in particular when the size of the switch, the level of fault currents to be interrupted and the size of the device which uses it, make it difficult to implement other means.
  • each support piece comprises, beyond the corresponding pad, a conductive deflector extension respectively, these extensions being oriented or shaped so that for each pair of positions of the contacts and from the edge of the screen, following the passage of the latter between the pads, there exists between two points of these extensions a possible arc path which passes through a point of this edge, and which is shorter than the path passing at this time there by the pellets and said point of the edge.
  • a switch 1, see FIG. 1, implementing the invention mainly comprises a first contact piece 2 which, here, is fixed, and which therefore carries a fixed contact pad 4, a movable contact piece 3 which, here , is represented by a lever 5 pivoting about an axis 9 and carrying a movable contact 7, elastic means 6 which provide the necessary contact pressure, a flexible current supply conductor 11, a mechanical means 10 making it possible to operate the opening of the contacts, a thin insulating screen 17, which is guided in an insulating housing 12 for example along grooves 13 thereof to establish effective isolation between its two opposite faces, and a slot or transverse groove 14 , which is carried by a wall 15 of the shoemaker, which is connected to an expansion channel 19, and which is placed near the switch to receive the edge 16 of the screen when the latter moves to the left between a starting point or 10, and a point of arrival or work 8.
  • the screen 17 can, for example, be propelled at the moment of the appearance of an overcurrent of current J by the mechanism 10 when the latter is released by the effects of a coil 26 placed in series in the circuit 18 which also includes a conductor 27 between terminals 24, 25; in a first variant, the screen can be propelled by a previously armed elastic means 29 which is itself released by a pallet, or core, or striker 30 associated with the coil 26 or by the mechanism 10.
  • Resetting means not illustrated make it possible to restore to the mobile contact and to the screen, after automatic opening, rest positions identical to those of FIG. 1.
  • the edge of the screen arrives with a high speed between the two contact pads, when the latter are momentarily separated by an amount slightly greater than its thickness -e-. It then operates a destabilization of the arc when it abuts against the wall or when the front edge of the screen enters the slot 14 when it exists.
  • the contact pieces have been provided with conductive extensions, deflectors 20 and 21 respectively, which are directed in the directions of movement Q of the screen, and whose facing surfaces 22, 23, unlike the previous arrangements of the horns, do not diverge significantly, at least in regions immediately adjacent to these pellets.
  • the breaking chamber 28 and therefore the movement of the movable contact are small.
  • the surfaces where the arc feet circulate preferably extend as far as the vicinity of the slot in the housing into which the end of the screen penetrates, and that the angular travel performed by the movable contact when carried by a pivoting lever, must not be too high so as not to establish for a certain relative position of the screen and the lever, a shorter path than that existing during a immediately preceding relative position.
  • the extension 21 which is substantially parallel to the region 22 adjacent to the patch fixed contact 4 at the time of opening, forms an angle ⁇ with the general direction of the lever passing through points 9 and 7, while the deflector 20 itself has a surface 22a forming an angle with the general direction of conductor support 2, itself parallel to the screen.
  • the angular travel of the lever is here also relatively small, which allows the use of a mechanism 10 of reduced volume.
  • the presence of the inclined surface 22a promotes, moreover, the evacuation of the gases appearing at the time of cutting to an evacuation channel 19a.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Push-Button Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Cookers (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Automatic Disk Changers (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Switches With Compound Operations (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
EP85402426A 1984-12-28 1985-12-06 Elektrischer Schalter mit Blende Expired EP0189689B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402426T ATE44110T1 (de) 1984-12-28 1985-12-06 Elektrischer schalter mit blende.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8419993 1984-12-28
FR8419993A FR2575589B1 (fr) 1984-12-28 1984-12-28 Interrupteur electrique a ecran

Publications (2)

Publication Number Publication Date
EP0189689A1 true EP0189689A1 (de) 1986-08-06
EP0189689B1 EP0189689B1 (de) 1989-06-14

Family

ID=9311085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402426A Expired EP0189689B1 (de) 1984-12-28 1985-12-06 Elektrischer Schalter mit Blende

Country Status (14)

Country Link
US (1) US4659888A (de)
EP (1) EP0189689B1 (de)
JP (1) JPS61161626A (de)
AT (1) ATE44110T1 (de)
BR (1) BR8506471A (de)
CA (1) CA1250010A (de)
CH (1) CH666764A5 (de)
DE (1) DE3544864C2 (de)
ES (1) ES8703676A1 (de)
FR (1) FR2575589B1 (de)
GB (1) GB2169141B (de)
IE (1) IE57188B1 (de)
IT (1) IT1186171B (de)
ZA (1) ZA859818B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310469A1 (de) * 1987-10-02 1989-04-05 Telemecanique Schutzschalter mit Blende zum Unterbrechen des Lichtbogens
EP0310468A1 (de) * 1987-10-02 1989-04-05 Telemecanique Schutzschalter mit Blende zum Unterbrechen des Lichtbogens

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4752660A (en) * 1986-01-10 1988-06-21 Matsushita Electric Works, Ltd. Current limiting circuit breaker with an arc shearing plate
EP0244276B1 (de) * 1986-04-04 1991-06-05 Telemecanique Elektrischer Schalter für Schutzgerät, wie Schutzschalter
DE3823790A1 (de) * 1988-07-14 1990-01-18 Asea Brown Boveri Elektrisches installationsgeraet mit kontakttrennwand
DE19710880B4 (de) * 1997-03-15 2007-11-15 Moeller Gmbh Lichtbogenlöscheinrichtung
DE19735521A1 (de) * 1997-08-16 1999-02-18 Kloeckner Moeller Gmbh Lichtbogenlöscheinrichtung für einen kurzschlußstrombegrenzenden Niederspannungsschalter
JP5758169B2 (ja) * 2011-03-31 2015-08-05 Ｎｋｋスイッチズ株式会社 消弧装置付き直流電流遮断用小形スイッチ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1238660A (fr) * 1958-10-16 1960-08-12 Siemens Ag Dispositif pour allonger les arcs électriques
FR1541810A (fr) * 1967-09-01 1968-10-11 Comp Generale Electricite Appareil électrique de coupure à rupture rapide
DE2508299A1 (de) * 1974-03-12 1975-09-25 Ahlstroem Oy Elektrisches schaltgeraet
FR2511185A1 (fr) * 1981-08-07 1983-02-11 Telemecanique Electrique Dispositif automatique de limitation de courants de court-circuit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR570840A (fr) * 1923-10-04 1924-05-07 Interrupteur à air à action rapide
US2020935A (en) * 1932-05-25 1935-11-12 Westinghouse Electric & Mfg Co Circuit interrupter
US3549840A (en) * 1968-07-18 1970-12-22 S & C Electric Co Switch construction with load break device
DE1957620A1 (de) * 1969-11-15 1971-05-27 Karl Ahrens Leistungsschalter
US3842228A (en) * 1973-08-27 1974-10-15 Us Navy Circuit breaker assembly with interposed wedge non-conductor and complementary housing arc-prevention structure
US3978300A (en) * 1975-02-11 1976-08-31 Westinghouse Electric Corporation Low-voltage circuit-breaker having small contact separation and small gap between cooperating parallel-arranged arcing-rails
FR2540665B1 (fr) * 1983-02-04 1987-02-27 Telemecanique Electrique Dispositif interrupteur muni d'un ecran isolant s'interposant entre les contacts lors de la coupure et de moyen de cisaillement de l'arc entre cet ecran et une paroi isolante

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1238660A (fr) * 1958-10-16 1960-08-12 Siemens Ag Dispositif pour allonger les arcs électriques
FR1541810A (fr) * 1967-09-01 1968-10-11 Comp Generale Electricite Appareil électrique de coupure à rupture rapide
DE2508299A1 (de) * 1974-03-12 1975-09-25 Ahlstroem Oy Elektrisches schaltgeraet
FR2511185A1 (fr) * 1981-08-07 1983-02-11 Telemecanique Electrique Dispositif automatique de limitation de courants de court-circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310469A1 (de) * 1987-10-02 1989-04-05 Telemecanique Schutzschalter mit Blende zum Unterbrechen des Lichtbogens
EP0310468A1 (de) * 1987-10-02 1989-04-05 Telemecanique Schutzschalter mit Blende zum Unterbrechen des Lichtbogens
FR2621417A1 (fr) * 1987-10-02 1989-04-07 Telemecanique Electrique Interrupteur de protection a ecran de coupure d'arc
FR2621418A1 (fr) * 1987-10-02 1989-04-07 Telemecanique Electrique Interrupteur de protection a ecran de coupure d'arc

Also Published As

Publication number Publication date
FR2575589B1 (fr) 1987-02-06
GB2169141A (en) 1986-07-02
DE3544864A1 (de) 1986-07-10
IE853309L (en) 1986-06-28
DE3544864C2 (de) 1995-09-07
IE57188B1 (en) 1992-05-20
ATE44110T1 (de) 1989-06-15
CH666764A5 (fr) 1988-08-15
CA1250010A (fr) 1989-02-14
ZA859818B (en) 1986-09-24
GB8530582D0 (en) 1986-01-22
IT8523341A0 (it) 1985-12-20
IT1186171B (it) 1987-11-18
JPS61161626A (ja) 1986-07-22
FR2575589A1 (fr) 1986-07-04
GB2169141B (en) 1989-06-07
BR8506471A (pt) 1986-09-02
EP0189689B1 (de) 1989-06-14
US4659888A (en) 1987-04-21
ES8703676A1 (es) 1987-02-16
ES550490A0 (es) 1987-02-16

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