EP0759629B1 - Lastschalter mit Einschaltwiderstand und Einfügungsvorrichtung - Google Patents
Lastschalter mit Einschaltwiderstand und Einfügungsvorrichtung Download PDFInfo
- Publication number
- EP0759629B1 EP0759629B1 EP96401775A EP96401775A EP0759629B1 EP 0759629 B1 EP0759629 B1 EP 0759629B1 EP 96401775 A EP96401775 A EP 96401775A EP 96401775 A EP96401775 A EP 96401775A EP 0759629 B1 EP0759629 B1 EP 0759629B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contacts
- assembly
- ring
- contact
- fixed
- 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
- 238000003780 insertion Methods 0.000 title claims description 33
- 230000037431 insertion Effects 0.000 title claims description 33
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000013016 damping Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 238000007664 blowing Methods 0.000 description 5
- 229910052573 porcelain Inorganic materials 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 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
- 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
- H01H33/16—Impedances connected with contacts
- H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch
Definitions
- the present invention relates to a high circuit breaker voltage provided with a closing resistor associated with a device for inserting this resistance.
- the resistance is arranged to the interior of the switching chamber and is associated with a insertion mechanism also placed inside the breaking chamber.
- the latter includes an insertion contact linked to the moving part of the circuit breaker, consisting of a ring of tungsten and cooperating with a contact linked to the fixed assembly of the circuit breaker and also made up of a ring of tungsten.
- the electrical contact is made at the end and is done with a relatively large shock, which explains the choice of tungsten as contact material.
- These rings are costly.
- the ring linked to the moving part is heavy; her setting in motion quickly requires a significant energy of so that the power of the circuit breaker control must take into account, which strikes its cost price.
- the shock of two rings produces shock effects and risks of rebounding so that the mechanism should include damping elements which also increase the cost of the circuit breaker.
- the size and in particular the diameter of the tungsten rings is important, so that the diameter of the porcelain delimiting the chamber of cutting is important.
- An object of the present invention is to provide a mechanism with no heavy parts, so that the power of the control can be reduced and its cost lowered.
- Another object of the present invention is to achieve a mechanism that does not require a device damping on contact of the insertion contacts.
- Another object of the invention is to provide a reduced diameter insertion mechanism, which allows decrease the diameter of the porcelain shell and reduce its cost.
- the subject of the invention is a circuit breaker comprising, for each phase, a breaking chamber delimited by a substantially cylindrical insulating jacket inside which are arranged, coaxially, a set mobile including a mobile main contact, a movable arcing contact and a cooperating blow piston with a blowing cylinder terminated by a nozzle blowing, said movable contacts being connected to a first socket, a fixed assembly comprising a fixed arcing contact in series with a resistor arranged coaxially and cooperating with an insertion assembly temporary when the circuit breaker closes, said resistance being connected to a second socket, characterized in that said fixed arcing contact consisting of a rod axial metal, the insert set includes a ring slidable with electrical contact along said metal rod and bearing on the side of the mobile assembly of first contacts intended to cooperate with said contact main mobile and on the other side of the second contacts capable of cooperating with third fixed contacts electrically connected to the second socket, the insertion assembly further comprising a pusher insulating cylindrical pushed by
- the circuit breaker the insertion assembly further comprises a piston integral of said ring and sliding around the fixed arcing contact and inside a cylinder attached to the fixed assembly and provided with calibrated openings to constitute a retarder at suction.
- Insert set includes cylinder damping integral with said ring and cooperating with a stop fixed on the fixed arcing contact.
- Figure 1 shows a switching chamber of a circuit breaker with closing resistor.
- the bedroom break includes a waterproof insulating jacket, usually porcelain, closed by two flanges of ends 2 and 3 provided with a first 2A and a second 3A sockets.
- the inside of the envelope is filled insulating gas (preferably sulfur hexafluoride SF6 under a pressure of a few hundred hectopascals).
- a closing resistor is arranged coaxially with the casing 1, inside a metal cover 4 which is in communication with the inside of the envelope and which provides the electrical connection between one end of the resistance and socket 2A.
- circuit breaker may include, for each phase, several breaking chambers of the aforementioned type, connected in series.
- the invention which is the subject of the this patent application also applies to "metal casing to earth” type installations, say armored installations.
- the envelope in porcelain 1 is replaced by a metal casing, by example aluminum, grounded, and electrical outlets are isolated.
- Figure 2 shows, on a larger scale but partially and in axial section, the cutting chamber according to the invention.
- the fixed arcing contact of the breaking chamber is consisting of a metal rod 11, for example of alloy with copper base, provided with an 11A end made in a material resistant to the effects of electric arc.
- This material can be a tungsten based alloy.
- the mobile circuit breaker assembly includes a cylinder metallic 13 mechanically connected to an operating rod not shown and electrically at the second tap current 3A, not visible in Fig. 2. At one end of this cylinder is disposed a contact tip 14 constituting the permanent contact of the mobile assembly.
- a tube metallic 15 including a first end, not visible in Fig.2 is electrically connected to the second socket current 3A and of which the second end 15A consists of contact fingers of material resistant to the effects of the arc.
- the cylinder 13 and the tube 15 define a volume blowing ring 16 closed on one side by a disc 17 integral with cylinder 13 and tube 15 and on the other side by a fixed blow piston 18 of annular section.
- the disc 17 is pierced with holes 19 for the passage of gas from blowing which escapes through a blowing nozzle 20.
- the resistance insertion set includes a metal ring 22 which can slide along the rod 11 and in electrical contact with it thanks to sliding contacts 23.
- the ring 22 is pierced with holes 22A.
- the insertion assembly is therefore movable relative to the fixed assembly of the breaking chamber.
- a crown of electrical contacts 25 arranged at the end of a portion conductive cylindrical 26; contacts 25 cooperate with the end piece 14 for the passage of the permanent current when the circuit breaker is in the on position.
- a cylindrical plunger 28 made of insulating material, coming to contact of the mobile assembly when the circuit breaker is in position engaged.
- This pusher is pushed by a spring 29 pressing against the ring 22.
- the pusher 28 is supported on a shoulder 20A of nozzle 20.
- the ring 22 further carries a contact piece 31 cooperating with a fixed cylindrical contact 32 fixed to fixed metal arms 33 electrically connected to the first 2A outlet and mechanically attached to the corresponding end of the breaking chamber.
- the contacts 31 and contacts 32 are in electrical contact when the circuit breaker is in the on position.
- the insertion assembly further comprises a piston 35 sliding around the rod 11 and connected to the ring 22 by arms 37, for example three arms angularly distant 120 °.
- the piston 35 slides in a fixed cylinder 38 fixed to metal block 39 placed at the end of the resistor 5.
- the cylinder 38 is provided with cavities not shown leading to the outside to constitute a retarder of the mobile insertion assembly in its movement towards the right of the figure.
- a spring 40 based on a on the outside wall of cylinder 38 and on the other hand on elbows of arms 37, tends to push the whole to the right of the figure.
- the insertion set is completed by a stop cylindrical in insulating material 41, fixed on the rod 11, and coming to engage, when the insertion assembly comes into end of travel to the right of the figure, in a cylinder 42 forming part of the mobile assembly. This provision allows damping of the end-of-travel shock the mobile insertion assembly.
- Fig. 3 shows the switching chamber in position triggered.
- the insertion assembly is in its extreme position in abutment against abutment 41. Note that the distances d1 between contacts 25 and the movable main contact, and d2 between contacts 31 and 32 are greater than the distance isolation at the voltage of the switching chamber. This condition is necessary to avoid any reboot between contacts.
- Fig. 4 shows the configuration after a weak moving crew race.
- the mobile crew continues its course and trains the insertion assembly, because the spring 29 of the pusher 28 has finished compression.
- the dimensions of the various elements of the cut-out have been dimensioned, taking into account the speed movement of the mobile assembly, to ensure a duration sufficient insertion of resistance 5, for example 8 to 12 milliseconds.
- the mobile assembly continues to run to the left until the end of the race; at this time contacts 31 and 32 are in contact and the room has the configuration of the Fig. 2.
- the insertion assembly remains stationary until the power goes out. In this way, the resistance 5 remains short-circuited during the entire shutdown phase current and is therefore not inserted at the opening.
- the mobile assembly continuing its race, the contact in be the pusher 28 and the mobile assembly stops when the spring 29 reaches the end of its travel; under the action of spring 40 the insertion assembly moves along the rod 11 until it abuts on the abutment 41; at the moment contacts 31 and 32 are separated by a distance d2 greater than the isolation distance (configuration of the Fig. 3).
- the cylinder 42 and the stop 41 constitute a very simple damping device.
- the insertion assembly of the invention is light, so the circuit breaker control energy is not augmented by this insert set.
- the maximum diameter of the insert assembly which is that of the arms 33 and of the contact 32, is low, so that the diameter of the porcelain does not have to be increased by the presence of this insertion set.
- Insertion kit requires no device amortization upon insertion, which is a source saving.
- the invention applies to high circuit breakers voltage, "open” or “shielded” type.
Landscapes
- Circuit Breakers (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Relay Circuits (AREA)
- Emergency Protection Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Claims (3)
- Schaltautomat, umfassend, für jede Phase, eine Unterbrechungskammer, die durch ein isolierendes Gehäuse (1) begrenzt ist, das im Wesentlichen zylindrisch ist und in dessen Inneren in koaxialer Weise ein mobile Anordnung angeordnet ist, umfassend insbesondere einen mobilen Hauptkontakt (14), einen mobilen Bogenkontakt (15, 15A) und einen Blaskolben (18), der mit einem Blaszylinder zusammenarbeitet, der durch eine Blasdüse (20) abgeschlossen ist, wobei die mobilen Kontakte mit einer ersten Anschlussstelle verbunden sind, einer festen Anordnung, umfassend einen festen Bogenkontakt (11, 11A) in Serie mit einem Widerstand (5), der koaxial angeordnet ist und mit einer Einrichtung zum zeitweiligen Einführen zum Verschluss des Schaltautomaten zusammenarbeitet, wobei der Widerstand mit einer zweiten Anschlussstelle verbunden ist, dadurch gekennzeichnet, dass der feste Bogenkontakt aus einem axialen metallischen Schaft (11, 11A) gebildet ist, wobei Einführanordnung einen Ring (22) umfasst, der mit einem elektrischen Kontakt (23) entlang des metallischen Schaftes gleiten kann und auf der Seite der mobilen Anordnung erste Kontakte (25) trägt, die der Zusammenarbeit mit den ersten mobilen Kontakten (14) dienen und andererseits zweite Kontakte (31), die mit dritten festen Kontakten (32) zusammenarbeiten könne, die elektrisch mit der zweiten Anschlussstelle verbunden sind, wobei die Einführanordnung darüber hinaus einen isolierenden zylindrischen Stößel (28) umfasst, der durch eine an dem Ring gelagerte erste Feder (29) gedrückt wird, wobei die Einführanordnung der Wirkung einer zweiten Feder (40) unterliegt, die an der festen Anordnung gelagert ist und die Einführanordnung in Richtung der mobilen Anordnung spannt, wobei der mobile Hauptkontakt (14), die ersten (25), zweiten (31) und dritten (32) Kontakte derart angeordnet sind, dass, wenn der Schaltautomat in ausgelöster Position ist, die Distanz einerseits (d1) zwischen den ersten Kontakten (25) und dem Hauptkontakt (14) und andererssits (d2) zwischen den zweiten (31) und dritten (32) Kontakten zumindest gleich der isolierenden Distanz ist, entsprechend der Spannung der Kammer.
- Schaltautomat gemäß dem Anspruch 1, dadurah gekennzeichnet, dass die Einführanordnung darüber hinaus einen Kolben (35) aufweist, der mit dem Ring (22) verbunden ist und um den festen Bogenkontakt (11) sowie im Inneren eines festen Zylinders (38) gleitet, der fest an der festen Anordnung ist, und mit kalibrierten Öffnungen versehen ist, zur Bildung einer Verzögerung der Luftansaugung.
- Schaltautomat gemäß einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Einführanordnung einen Dämpfungszylinder (42) umfasst, der mit dem Ring (22) verbunden ist und mit einem Anschlag (41) zusammenwirkt, der an dem festen Bogenkontakt (11) fixiert ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9509935A FR2737936B1 (fr) | 1995-08-18 | 1995-08-18 | Disjoncteur muni d'une resistance de fermeture avec dispositif d'insertion |
FR9509935 | 1995-08-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0759629A1 EP0759629A1 (de) | 1997-02-26 |
EP0759629B1 true EP0759629B1 (de) | 1999-10-06 |
Family
ID=9482002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96401775A Expired - Lifetime EP0759629B1 (de) | 1995-08-18 | 1996-08-13 | Lastschalter mit Einschaltwiderstand und Einfügungsvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US5742017A (de) |
EP (1) | EP0759629B1 (de) |
AT (1) | ATE185444T1 (de) |
DE (1) | DE69604547T2 (de) |
ES (1) | ES2138305T3 (de) |
FR (1) | FR2737936B1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2783088B1 (fr) * | 1998-09-09 | 2000-10-13 | Alstom Technology | Interrupteur avec un systeme d'insertion d'une resistance a longue duree d'insertion |
JP4003492B2 (ja) * | 2002-03-14 | 2007-11-07 | 株式会社日立製作所 | 集電子 |
US7078643B2 (en) * | 2003-12-15 | 2006-07-18 | Rostron Joseph R | Capacitor switch with internal retracting impedance contactor |
JP5178644B2 (ja) * | 2009-06-29 | 2013-04-10 | 株式会社東芝 | 投入抵抗接点付きガス遮断器及びその投入、遮断方法 |
EP2325859B1 (de) * | 2009-11-24 | 2013-04-17 | ABB Technology AG | Gasisolierter Hochspannungsschalter |
US8431842B2 (en) * | 2011-01-06 | 2013-04-30 | Tai-Her Yang | Sequential switching device with surrounding distinctive joint points structure |
US9349556B2 (en) * | 2012-05-31 | 2016-05-24 | Mitsubishi Electric Corporation | Gas circuit breaker |
FR3029351B1 (fr) * | 2014-12-02 | 2017-12-29 | Alstom Technology Ltd | Dispositif de coupure electrique integrant un disjoncteur et un sectionneur |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL135709C (de) * | 1967-08-23 | |||
US3745284A (en) * | 1971-05-21 | 1973-07-10 | Hitachi Ltd | Gas breakers |
FR2450501A1 (fr) * | 1979-03-02 | 1980-09-26 | Alsthom Cgee | Dispositif d'insertion de resistance a la fermeture d'un appareil d'interruption |
FR2487570A1 (fr) * | 1980-07-23 | 1982-01-29 | Alsthom Atlantique | Disjoncteur a gaz comprime |
BR8104731A (pt) * | 1980-07-23 | 1982-04-13 | Alsthom Atlantique | Disjuntor a gas comprimido |
FR2503448B1 (fr) * | 1981-03-31 | 1986-04-18 | Alsthom Atlantique | Disjoncteur a gaz comprime |
FR2487560A1 (fr) * | 1980-07-25 | 1982-01-29 | Juge Robert | Dispositif de surimpression pour magnetophone |
JPS58165221A (ja) * | 1982-03-25 | 1983-09-30 | 三菱電機株式会社 | 断路器 |
FR2657459A1 (fr) * | 1990-01-19 | 1991-07-26 | Alsthom Gec | Disjoncteur a haute tension a resistance de fermeture. |
-
1995
- 1995-08-18 FR FR9509935A patent/FR2737936B1/fr not_active Expired - Fee Related
-
1996
- 1996-08-13 AT AT96401775T patent/ATE185444T1/de not_active IP Right Cessation
- 1996-08-13 EP EP96401775A patent/EP0759629B1/de not_active Expired - Lifetime
- 1996-08-13 ES ES96401775T patent/ES2138305T3/es not_active Expired - Lifetime
- 1996-08-13 DE DE69604547T patent/DE69604547T2/de not_active Expired - Fee Related
- 1996-08-16 US US08/689,914 patent/US5742017A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69604547D1 (de) | 1999-11-11 |
US5742017A (en) | 1998-04-21 |
FR2737936B1 (fr) | 1997-09-19 |
EP0759629A1 (de) | 1997-02-26 |
DE69604547T2 (de) | 2000-03-30 |
ATE185444T1 (de) | 1999-10-15 |
FR2737936A1 (fr) | 1997-02-21 |
ES2138305T3 (es) | 2000-01-01 |
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