EP1363299B1 - Disjoncteur pour basse tension et courants élevés - Google Patents
Disjoncteur pour basse tension et courants élevés Download PDFInfo
- Publication number
- EP1363299B1 EP1363299B1 EP20030010744 EP03010744A EP1363299B1 EP 1363299 B1 EP1363299 B1 EP 1363299B1 EP 20030010744 EP20030010744 EP 20030010744 EP 03010744 A EP03010744 A EP 03010744A EP 1363299 B1 EP1363299 B1 EP 1363299B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- circuit breaker
- connecting link
- breaker according
- pole
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims 4
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 210000002414 leg Anatomy 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
-
- 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
- H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
-
- 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
- H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts
Definitions
- the invention relates to a circuit breaker for high currents and low voltage according to the preamble of claim 1.
- a housing made of insulating molding material consists of a lower part and of a shell to be screwed onto this and is divided by parallel inner partition walls into a plurality of adjacent pole spaces.
- An actuating mechanism, a number of contact units corresponding to the number of poles of the circuit breaker and operable by the actuating mechanism, associated and outgoing connection means and trigger means for automatically opening the contact units when adjustable boundary conditions are exceeded by the currents flowing through the contact units are stored in the lower part and fixed there partly.
- Each pole space has a stationary contact connected to the bottom part and a plurality of movable contact fingers arranged in parallel.
- the movable contact fingers are limited against the action of contact springs stored in a U-shaped metallic contact holder.
- the contact holder of all poles are riveted to a cross-over the pole spaces extending connecting web.
- the connecting bridge consists of a plastic-coated rod-like steel core and is rotatably mounted between the lower part and upper part.
- the contact holder of the middle pole is pivotally connected to lower toggle levers of a toggle lever system belonging to the actuating mechanism.
- the actuating mechanism also has an actuating lever, a force accumulator, a locking and unlockable support lever and a latching mechanism operatively connected to the triggering means.
- the actuating mechanism is mounted between two side panels, which in turn are mounted in the lower part.
- a disadvantage of this solution is that the contact holder with relatively long lever arms are connected via the torsion-bonded connecting web, so that - starting from the actuating mechanism - at high contact forces at a staggered loading of the contact fingers of the outer pole against the contact fingers of the middle pole and the contact fingers of the outer pole a lesser stroke is available.
- Another disadvantage is that the interaction of the metallic contact holder with the metallic actuating mechanism and the connecting web is a considerable risk of electrical voltage carryover between the polar spaces or the contact units.
- insulating shields preferably snapped off at Lichtseineinvier gasendem material, which cause a certain seal between adjacent pole spaces in cooperation with the adjacent partitions.
- On the connecting web shielding segments are mounted, which engage in isolation in grooves that connect to provided for the connecting web recesses in the intermediate walls.
- a generic circuit breaker according to US 4 598 186 A shows a connecting web of insulating material with deferred shielding segments.
- Metallic contact holders are connected via hat-shaped metal brackets with the connecting web.
- the metal brackets are each connected to an aluminum block which extends above the contact pressure springs.
- Retaining webs are rigidly connected to one of the contact holders of the middle pole space and pivotally coupled to an actuating mechanism.
- the invention is therefore based on the object to realize both a more uniform loading of the contact units of all poles as well as a cheaper insulation of the pole units with each other.
- the deformation of the connecting web is very low, since they only bend and is not burdened as in a torsion shaft with long lever arms on rotation, wherein the pivot axis is determined in a simple manner by the mounted in the side panels of the actuating mechanism retaining plate.
- the shielding segments which are to avoid transversal shorts and voltage carry-over between the pole spaces via the recesses provided in the intermediate walls for the pivoting movement, are formed directly on the connecting web.
- the side panels can be formed in the usual way as sheets. As side panels but can also serve the intermediate walls.
- the shielding segments run in pairs and on both sides of the intermediate walls.
- the shield segments dip into grooves of the sidewalls.
- a development of the invention consists in the advantageous embodiment of the retaining plate.
- the direct connection of the retaining plate with the connecting web has a positive effect on the torsional rigidity of the moving parts of the contact units.
- lower knee lever are articulated approximately in the middle between the attachment to the connecting web and the storage in the side panels.
- the designed for high currents three-pole low-voltage circuit breaker is surrounded by a mold housing, of which in Fig. 1, only the lower part 2 is shown.
- the lateral outer walls 4 and the two intermediate walls 5 serve for lateral delimitation of three parallel polar spaces 6 to 8.
- the polar spaces 6 to 8 are associated with contact units 9, 10 and 11.
- Each contact unit 9, 10, 11 consists of a defined in the lower part 2 fixed contact 16, a plurality of parallel movable contact fingers 18 and an arc extinguishing unit 20.
- the belonging to a contact unit 9, 10 and 11 contact fingers 18 are by means of a pivot axis 22 in a U shaped contact holder 24 limited pivotally mounted and are based in a known manner against contact pressure springs 26 from.
- the fixed contacts 16 are connected via first bus bars 12 to first terminals 14.
- the contact fingers 18 are connected via flexible connecting lines 17 to second busbars 13, followed by the second terminals, not shown.
- the actuating mechanism 30 includes an actuating lever 32, via which the circuit breaker is externally operable.
- the actuating mechanism 30 further comprises a toggle lever system 34 and is triggered via release means, not shown.
- the structure and operation of such a conventional actuating mechanism 30 can be seen from the aforementioned EP 0 206 882 B1.
- the toggle mechanism 34 is connected to a spring force accumulator and has an upper toggle lever and two via a toggle lever axis connected thereto lower toggle lever 36.
- the contact holder 24 of all contact units 9 to 11 are interconnected.
- the contact holder 24 and the connecting web 38 have been made in one piece of insulating molding material, wherein a likewise transverse rod-like steel core 40 was encapsulated.
- the above the contact pressure springs 26 extending steel core 40 gives the existing of the three contact holders 24 and the connecting web 38 movable system sufficient rigidity against both bending and torsion.
- a U-shaped retaining plate 42 engages with its center leg 44 and its two outer legs 46, the contact holder 24 of the central contact unit 10 and is screwed immovably at its pointing to the arc extinguishing 20 end via two bends 48 with the connecting web 38.
- the outer legs 46 are pivotally mounted in the side panels 28 via a respective rivet-shaped bearing point 50.
- the holding plate 42 is connected in its middle region with its outer legs 46 via likewise rivet-shaped joints 52 with the lower toggle levers 36.
- 5 elongated recesses 54 are provided for the connecting web 38 in the intermediate walls.
- the consisting of the contact holders 24 and the connecting web 38 molded part further includes four Abnesegmente 56 and 57, which extend in pairs and in close proximity to both sides of the intermediate walls 5.
- support tabs 60 of sheet metal are fixed immovably to the outer sides of the contact holders 24 belonging to the two outer contact units 9 and 11 small distance to the outer walls 4 extending in the lower part 2 are pivotally mounted.
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Claims (8)
- Disjoncteur pour courants élevés et basse tension, comprenant:un boîtier moulé comprenant une partie inférieure (2) et une partie supérieure, avec des espaces de pôles (6...8) formant par des parois intermédiaires parallèles (5) plusieurs espaces de pôles (6...8);un mécanisme d'actionnement (30), comportant un système à levier coudé (34) et agencé dans des panneaux latéraux fixes (28);des moyens de déclenchement coopérant avec le mécanisme d'actionnement (30);un nombre d'unités de contact (9...11) correspondant au nombre des espaces de pôles (6...8), contenant respectivement un contact fixe (16) relié à la partie inférieure (2) et plusieurs doigts de contact parallèles mobiles (18), agencés de sorte à pouvoir effectuer un pivotement limité dans un porte-contact en U (24), contre l'action de ressorts de compression de contact (26), et une unité d'extinction de l'arc (20), l'unité de contact (10) associée à un espace de pôles central (7) étant accouplée par articulation au système à levier coudé (34);une nervure de raccordement à agencement transversal (38), reliant les porte-contacts (24) de toutes les unités de contact (9...11), composée d'une matière de moulage isolante, comportant des segments de blindage (56, 57) par rapport à des évidements (54) prévus pour la nervure de raccordement (38), dans les parois intermédiaires (5);des blocs métalliques reliés dans les espaces de pôles externes à la nervure de raccordement (38), s'étendant parallèlement à la nervure de raccordement et agencés au-dessus des ressorts de compression de contact (26);caractérisé en ce que:les blocs métalliques s'étendent vers un noyau d'acier en forme de tige (40), s'étendant au-dessus de tous les espaces de pôles (6...8), surmoulé par la nervure de raccordement (38);les porte-contacts (24) sont reliés d'une seule pièce à la nervure de raccordement (38) et aux éléments de blindage (56, 57); etl'accouplement de l'unité de contact (10) associée à un espace de pôles central (7) avec le mécanisme d'actionnement (30) est assuré par une tôle de retenue (42) reliée de manière rigide à la nervure de raccordement (38), agencée par pivotement dans les panneaux latéraux (28).
- Disjoncteur selon la revendication 1, caractérisé en ce que les segments de blindage (56, 57) s'étendent respectivement par paires vers les deux côtés des parois intermédiaires (5).
- Disjoncteur selon la revendication 1, caractérisé en ce que les segments de blindage sont immergés dans des rainures des parois intermédiaires (5).
- Disjoncteur selon l'une des revendications précédentes, caractérisé en ce que les unités d'extinction de l'arc (20) atteignent avec des inserts latéraux (58) un point situé peu devant la nervure de raccordement (38).
- Disjoncteur selon la revendication précédente, caractérisé en ce que les inserts (58) sont composés d'un matériau gasant.
- Disjoncteur selon l'une des revendications précédentes, caractérisé en ce que la tôle de retenue (42) a une forme en U, entourant latéralement avec ses branches externes (46) les porte-contacts (24) de l'unité de contact centrale (10) et fixée par au moins un coude d'extrémité (48) formé sur sa branche centrale (44) à la traverse de raccordement (38).
- Disjoncteur selon la revendication précédente, caractérisé en ce des levier coudés inférieures (36) du système à levier coudé (34) sont fixées par articulation sur les branches externes (46) dans les panneaux latéraux (28), pratiquement au milieu entre le au moins un coude (58) et les paliers (50) des branches externes (46).
- Disjoncteur selon l'une des revendications précédentes, caractérisé en ce qu'une patte de support (60) est d'une part reliée de manière immobile au porte-contact (24) des deux unités de contact externes (9, 11) et est fixée d'autre part par articulation dans la partie inférieure (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10222010 | 2002-05-17 | ||
DE2002122010 DE10222010C1 (de) | 2002-05-17 | 2002-05-17 | Leistungsschalter für hohe Ströme und Niederspannung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1363299A2 EP1363299A2 (fr) | 2003-11-19 |
EP1363299A3 EP1363299A3 (fr) | 2004-04-21 |
EP1363299B1 true EP1363299B1 (fr) | 2007-04-18 |
Family
ID=29265344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030010744 Expired - Lifetime EP1363299B1 (fr) | 2002-05-17 | 2003-05-14 | Disjoncteur pour basse tension et courants élevés |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1363299B1 (fr) |
DE (2) | DE10222010C1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10331822A1 (de) * | 2003-07-14 | 2005-02-10 | Siemens Ag | Schiffs-Leistungsschalter sowie einen solchen enthaltende Schiffs-Energieversorgungs- und -verteilungsanlage |
EP1999770A1 (fr) * | 2006-03-29 | 2008-12-10 | Siemens Aktiengesellschaft | Dispositif d'extinction d'un arc lumineux dote d'un materiau d'extinction d'un arc lumineux pour commutateur de protection |
CN103443893B (zh) * | 2011-02-08 | 2016-12-14 | 西门子公司 | 限动器设备、包括限动器的断路器及其使用方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3525837A (en) * | 1968-11-18 | 1970-08-25 | Square D Co | Movable contact structure for a molded-case electric circuit breaker |
FR2360171A1 (fr) * | 1976-07-30 | 1978-02-24 | Unelec | Mecanisme de commande de disjoncteur |
US4524339A (en) * | 1983-05-09 | 1985-06-18 | Square D Company | Contact control arrangement for high amperage molded case circuit breaker |
US4490593A (en) * | 1983-05-09 | 1984-12-25 | Square D Company | Arrangement for arc transfer in high amperage molded case circuit breaker |
US4598186A (en) * | 1983-05-09 | 1986-07-01 | Square D Company | Vent arrangement for high amperage molded case circuit breaker |
FR2583571B1 (fr) * | 1985-06-12 | 1994-02-18 | Merlin Et Gerin | Disjoncteur basse tension a coupure amelioree. |
US4849589A (en) * | 1987-08-31 | 1989-07-18 | Square D Company | Contact assembly for a circuit breaker |
US4866225A (en) * | 1988-09-08 | 1989-09-12 | Siemens Energy & Automation, Inc. | Insulated light weight metallic crossbar in polyphase circuit breaker assemblies for inhibiting arcing |
FR2650434B1 (fr) * | 1989-07-26 | 1995-11-24 | Merlin Gerin | Disjoncteur basse tension a contacts multiples et a fortes intensites |
FR2807565B1 (fr) * | 2000-04-10 | 2003-03-14 | Schneider Electric Ind Sa | Pole pour un disjoncteur electrique limiteur de basse tension de puissance et disjoncteur muni d'un tel pole |
-
2002
- 2002-05-17 DE DE2002122010 patent/DE10222010C1/de not_active Expired - Fee Related
-
2003
- 2003-05-14 EP EP20030010744 patent/EP1363299B1/fr not_active Expired - Lifetime
- 2003-05-14 DE DE50307051T patent/DE50307051D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1363299A2 (fr) | 2003-11-19 |
DE10222010C1 (de) | 2003-11-20 |
DE50307051D1 (de) | 2007-05-31 |
EP1363299A3 (fr) | 2004-04-21 |
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