EP0179834A1 - Switching device with antiarcing screen. - Google Patents
Switching device with antiarcing screen.Info
- Publication number
- EP0179834A1 EP0179834A1 EP85902063A EP85902063A EP0179834A1 EP 0179834 A1 EP0179834 A1 EP 0179834A1 EP 85902063 A EP85902063 A EP 85902063A EP 85902063 A EP85902063 A EP 85902063A EP 0179834 A1 EP0179834 A1 EP 0179834A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screen
- wall
- lamellar
- annular
- space
- 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
Links
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 present invention relates to a current threshold switching device comprising in an enclosure an input terminal, an output terminal and between them an electrical circuit comprising at least two separable contacts, as well as a rotary screen having a wall.
- the object of the present invention is in particular to produce a switch device with a rotary screen allowing simple and inexpensive manner to reliably cut off the arc and avoiding the risks of pollution and explosion.
- the cylindrical fixed wall delimits in the housing two volumes each located on one side of the wall, while a cylindrical lamellar space of notable length and low height is delimited between the radially inner face of the wall and the radially outer face of the annular sector, to define in said space a lamellar path capable of ensuring the rolling and cooling of the arc, the lamellar space communicating permanently with one at least two volumes to allow the expulsion of gases with expansion of said space to said volume.
- the arc plasma is therefore cooled along the concave fixed wall, the great length of the latter nevertheless being able to be accommodated in a relatively small space of the switch device thanks to the rounded shape of said wall.
- This rounded shape in combination with the pivot axis serving as a reference axis, allows slight variations in the radial clearance between the fixed wall and the annular sector without causing friction or jamming of the screen.
- the fixed wall may for example extend over at least about one quadrant downstream of the contact area in the direction of travel of the screen, in order to cause significant cooling of the arc.
- the annular sector of the screen forms a cap connected to the pivot axis by at least one connecting cheek in the form of a circular sector situated opposite a fixed cheek secured to the housing and separated from the latter by a lamellar space to determine a complementary lateral and lamel ⁇ communication path between the lamellar space and the expansion volume (s).
- the interior of the shell thus formed by the screen determines part of the expansion volume.
- the connecting cheek of the screen and the fixed cheek of the housing can advantageously have baffles in the form of ribs and annular cooperating notches for increasing the lateral lamellar path.
- Figure 1 is a partial view in longitudinal section of a switch device equipped with the screen according to the invention, and shown in its closed position of the contacts;
- Figure 2 shows the screen in its contact opening position
- Figure 3 shows another embodiment of the device
- Figure 4 is the section of the device of Figure 3 along the plane IV-IV passing through the pivot axis;
- FIG. 5 shows in perspective a double-cut device according to the invention.
- the switch device 10 illustrated in FIG. 1 is an intensity threshold device comprising in a housing 11 provided with an input terminal E and an output terminal S between which there is an electrical circuit 12 comprising at least two separable contacts; these contacts are shown diagrammatically in FIG. 1 by a fixed contact CF and a movable contact CM.
- the movable contact CM is connected to the terminal S and the fixed contact CF is connected to the input terminal E via a trip device 13.
- the trigger device 13 comprises a magnetic member with a movable armature, for example in the event of an overcurrent, to allow, on the one hand, the opening of the contacts by means of a mechanism 14 and, on the other hand, the movement of the screen using a propellant shown schematically in 15.
- the switch device 10 comprises a rotary screen 20 which has an annular sector 21 in the form of a cylindrical cap and two lateral cheeks 22, 23 for connection with pins 24, 25 allowing pivoting about an axis X-X.
- the screen 20 is molded in one piece from isolan ⁇ te material.
- Annular ribs 26 are provided on the outer face of the cheeks 22, 23, the function of which will be explained below.
- the cheeks of the annular sector in the present example cover an area greater than a quadrant.
- the housing comprises a fixed cylindrical wall 30 delimiting on each side a volume V ,, V 2 .
- a cylindrical lamellar space V 3 is generated by the displacement of the screen and is inserted between the volumes V and V 2 .
- the lamellar space V 3 of circumferential length L for example from 5 to 15 mm and of small thickness h, for example from 0.1 to 0.7 mm, is formed between the radially inner face 31 of the wall 30 and the radially outer face 27 of the annular sector 21 of the screen.
- the fixed wall 30 covers a space of approximately one quadrant downstream of the area of the contacts CF, CM with respect to the direction of movement of the screen when the contacts are opened, this direction being represented by the arrow F.
- the lamellar space V defines a path capable of ensuring the rolling, elongation and cooling of the arc and it communicates permanently with a chamber 32 provided in volume V, to allow the expulsion of gases with expansion of space V-. to chamber 32 and from it to the atmosphere.
- a lamellar space V. remains downstream of the contact zone during the entire movement of the screen over a length L 2 sufficient to avoid reflux of the arc.
- the fixed cylindrical wall 30 is preferably constituted (FIG. 3) by a partition 33 separating the interior of the housing 11 into a volume V- ⁇ comprising the chamber 32 and into a volume V- comprising a chamber 34; the partition 33 has an opening 35 which allows, on the one hand, the lifting of the movable contact CM towards the chamber 34, on the other hand, the expulsion of the gases of volume V, towards this same chamber in addition to their expulsion towards room 32.
- the housing 11 has, opposite the side cheeks 22, 23 of the screen, fixed cheeks 36, 37 extending over a circumferential distan ⁇ about equal to L, + L 2 e provided with annular and complementary ribs and grooves 38 ribs and grooves 26 of the rotary screen; the ring-shaped members "38 determine spaces lamellar laté- ral V-, V g respectively associated with the cheeks 22, 23 and of greater length than the radius of the annular sector.
- the switch device shown in FIG. 5 comprises a double-break member 40, more precisely with fixed contacts CF a , CF b and movable contacts CM a , CM. present both the particularity of being provided with two rotary screens 20a, 20b in accordance with the invention; these screens have a notch 28 for the passage of the contacts and they have their pivot axes combined in YY; they cooperate for example by means of a push or pull rod 41 with a single frame of the magnetic trip device 42. This results in great simplicity and a reduced size for the device.
- a drive face 50 it is advantageously provided on the screen 20 an element or a drive face 50 to cooperate with a drive means 41 associated with the magnetic trigger ( Figure 1), the latter therefore directly constituting the means of propulsion of the screen; preferably, a return device 16 is associated with the screen to return it to its initial position.
- the drive face 50 is for example advantageously located on the side opposite to the annular sector 27 with respect to the pivot axis X-X and at a relatively small radial distance from this axis relative to the radial distance from the annular sector.
- An energy storage system can be associated with the screen to constitute, in interdependence with the magnetic trip device 13, the means of propulsion of the screen.
- a drive face is provided on the rotary screen 20 to cooperate with an actuating face of the mechanism 14 for opening the contacts, this mechanism comprising an elastic triggering system .
Abstract
Le dispositif interrupteur comprend un boîtier (11) doté d'une borne d'entrée (E), d'une borne de sortie (S) et, entre celles-ci, d'un circuit électrique (12) comportant au moins deux contacts séparables (CF, CM) ainsi qu'un écran rotatif présentant un secteur annulaire interposable entre les contacts et déplaçable en regard d'une paroi (30) comportant une ouverture pour le passage d'au moins l'un des contacts (CM). Cette paroi (30) délimite dans le boîtier (11) deux volumes (V1, V2) ainsi qu'un espace lamellaire (V3) permettant d'assurer le laminage et le refroidissement de l'arc. Cet espace (V3) communique avec une chambre (32) qui permet l'expulsion des gaz avec détente vers la chambre (32). L'invention permet d'obtenir d'une manière simple et peu coûteuse une coupure fiable de l'arc.The switch device comprises a housing (11) provided with an input terminal (E), an output terminal (S) and, between them, an electric circuit (12) comprising at least two contacts. separable (CF, CM) as well as a rotating screen having an annular sector interposable between the contacts and movable opposite a wall (30) having an opening for the passage of at least one of the contacts (CM). This wall (30) delimits in the housing (11) two volumes (V1, V2) as well as a lamellar space (V3) making it possible to ensure the rolling and cooling of the arc. This space (V3) communicates with a chamber (32) which allows the expulsion of the gases with expansion towards the chamber (32). The invention makes it possible to obtain a reliable breaking of the arc in a simple and inexpensive manner.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8406878A FR2563939B1 (en) | 1984-05-03 | 1984-05-03 | SWITCHING DEVICE WITH ARC SHUTDOWN SCREEN |
FR8406878 | 1984-05-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0179834A1 true EP0179834A1 (en) | 1986-05-07 |
EP0179834B1 EP0179834B1 (en) | 1988-05-18 |
Family
ID=9303661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85902063A Expired EP0179834B1 (en) | 1984-05-03 | 1985-05-03 | Switching device with antiarcing screen |
Country Status (8)
Country | Link |
---|---|
US (1) | US4647741A (en) |
EP (1) | EP0179834B1 (en) |
JP (1) | JPS62500333A (en) |
DE (1) | DE3562839D1 (en) |
ES (1) | ES8608224A1 (en) |
FR (1) | FR2563939B1 (en) |
SG (1) | SG60088G (en) |
WO (1) | WO1985005218A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0236576B1 (en) * | 1986-01-10 | 1991-08-14 | Matsushita Electric Works, Ltd. | Circuit breaker |
FR2596196B1 (en) * | 1986-03-21 | 1988-08-26 | Telemecanique Electrique | PROTECTIVE SWITCHING DEVICE PROVIDED WITH AN ARC SHUT-OFF SCREEN |
ES2022388B3 (en) * | 1986-04-04 | 1991-12-01 | Telemecanique | ELECTRICAL SWITCH FOR PROTECTIVE APPARATUS, LIKE A CIRCUIT BREAKER. |
FR2596916B1 (en) * | 1986-04-04 | 1988-06-10 | Telemecanique Electrique | BIPOLAR CIRCUIT BREAKER WITH AUTOMATIC OR MANUAL OPENING WITH BISTABLE ELECTROMAGNET AND MAGNETIZABLE BREAKING CORE |
JPS6346186A (en) * | 1986-08-13 | 1988-02-27 | 美津濃株式会社 | Rowing machine |
DE3823790A1 (en) * | 1988-07-14 | 1990-01-18 | Asea Brown Boveri | ELECTRICAL INSTALLATION DEVICE WITH CONTACT PARTITION |
DE4234065C1 (en) * | 1992-10-09 | 1993-12-02 | Eti Elektroelement Dd | Switchgear |
DE10001632A1 (en) | 2000-01-17 | 2001-08-02 | Harting Automotive Gmbh & Co | Circuit breaker has displacement element adjustable relative to two conductors and separating element that separates conductors when displacement element in separation position |
JP4887523B2 (en) * | 2000-12-28 | 2012-02-29 | リンテック株式会社 | Polyhedron inspection feeder and polyhedron inspection device |
WO2004019010A1 (en) * | 2002-08-26 | 2004-03-04 | James Hardie International Finance B.V. | Soil test box |
KR101771465B1 (en) * | 2011-07-25 | 2017-09-06 | 엘에스산전 주식회사 | Gas insulated switchgear |
CN108987140B (en) * | 2017-06-01 | 2024-04-02 | 泰科电子(深圳)有限公司 | Electrical contact system |
CN108987139B (en) | 2017-06-01 | 2024-02-02 | 泰科电子(深圳)有限公司 | Electrical contact system |
CN108987141B (en) * | 2017-06-05 | 2023-04-07 | 泰科电子(深圳)有限公司 | Electrical contact system |
US10186804B2 (en) | 2017-06-20 | 2019-01-22 | Amphenol Corporation | Cable connector with backshell locking |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US663612A (en) * | 1899-05-29 | 1900-12-11 | Gen Electric | Circuit-changer. |
US1833173A (en) * | 1928-07-10 | 1931-11-24 | Metropolitan Device Corp | Circuit breaking apparatus |
DE735601C (en) * | 1940-11-21 | 1943-05-19 | Aeg | Electric gas switch |
US2493419A (en) * | 1947-08-12 | 1950-01-03 | Joseph M Puffer | Switch for floor lamps |
US2714144A (en) * | 1953-04-22 | 1955-07-26 | Mcgraw Electric Co | Circuit interrupter |
DE1015897B (en) * | 1954-12-07 | 1957-09-19 | Busch Jaeger Duerener Metall | Cam control switch |
US2928910A (en) * | 1958-09-03 | 1960-03-15 | John P E Watterberg | Rotary switch |
FR1217162A (en) * | 1958-12-02 | 1960-05-02 | Parisienne De Const Electro Me | Electric switch with display |
FR1282733A (en) * | 1960-12-17 | 1962-01-27 | Switching device for charging the electric current | |
US4426562A (en) * | 1981-10-06 | 1984-01-17 | Westinghouse Electric Corp. | Rotary switch for switching very large DC currents |
-
1984
- 1984-05-03 FR FR8406878A patent/FR2563939B1/en not_active Expired
-
1985
- 1985-04-30 ES ES542764A patent/ES8608224A1/en not_active Expired
- 1985-05-03 EP EP85902063A patent/EP0179834B1/en not_active Expired
- 1985-05-03 WO PCT/FR1985/000105 patent/WO1985005218A1/en active IP Right Grant
- 1985-05-03 US US06/835,866 patent/US4647741A/en not_active Expired - Fee Related
- 1985-05-03 JP JP60502078A patent/JPS62500333A/en active Pending
- 1985-05-03 DE DE8585902063T patent/DE3562839D1/en not_active Expired
-
1988
- 1988-08-15 SG SG60088A patent/SG60088G/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO8505218A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0179834B1 (en) | 1988-05-18 |
FR2563939B1 (en) | 1988-03-18 |
DE3562839D1 (en) | 1988-06-23 |
ES542764A0 (en) | 1986-06-01 |
JPS62500333A (en) | 1987-02-05 |
ES8608224A1 (en) | 1986-06-01 |
US4647741A (en) | 1987-03-03 |
WO1985005218A1 (en) | 1985-11-21 |
SG60088G (en) | 1989-04-21 |
FR2563939A1 (en) | 1985-11-08 |
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