EP0986081A1 - Interrupteur avec un système d'insertion d'une résistance à longue durée d'insertion - Google Patents
Interrupteur avec un système d'insertion d'une résistance à longue durée d'insertion Download PDFInfo
- Publication number
- EP0986081A1 EP0986081A1 EP99402150A EP99402150A EP0986081A1 EP 0986081 A1 EP0986081 A1 EP 0986081A1 EP 99402150 A EP99402150 A EP 99402150A EP 99402150 A EP99402150 A EP 99402150A EP 0986081 A1 EP0986081 A1 EP 0986081A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- switch
- block
- longitudinal direction
- contacts
- 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
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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
- H01H33/16—Impedances connected with contacts
- H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch
Definitions
- the invention relates to a compressed gas switch, in particular a high voltage circuit breaker, comprising in an envelope which extends in a direction longitudinal, a first set of contacts including a first permanent current contact and first contact arcing, a second movable contact assembly according to the longitudinal direction with respect to the first crew of contacts and including a second permanent contact and a second arcing contact intended to connect respectively at the first permanent contact and at the first arcing contact, and a resistance insertion system during closing of the switch, this resistor being connected electrically in series between the first arcing contact and the first permanent current contact.
- Such resistance serves to limit the effects of transient currents on the network when closing the switch.
- this resistance is inserted when is established, when the switch closes, an electrical connection between the arcing contacts and is short-circuited before the connection between the permanent current contacts.
- the resistor When opening the switch, the resistor must not be inserted.
- the duration of insertion of this resistance may vary from one installation to another. This duration is generally dependent on the speed at which the crew is moved of mobile contacts. Some switches allow to obtain an insertion time of the order of 6 ms for a moving speed of the moving contact assembly of around 4 m / s. Some installations require the use of switches to reach a much longer resistance insertion time, of the order of 14 ms.
- An object of the invention is to propose a system insertion of a resistance to obtain a duration insertion of significant resistance.
- Another object of the invention is to propose a system insertion of a closing resistor which is compact and which requires few parts.
- the invention relates to a switch compressed gas comprising, in an envelope which extends in a longitudinal direction, a first crew of contacts including a first permanent current contact and a first arcing contact, a second set of contacts movable in the longitudinal direction relative to the first contact crew and including a second contact permanent and a second arcing contact intended to connect respectively at the first permanent contact and at the first arcing contact, and a resistor insertion system when the switch closes, this resistance being electrically connected in series between the first arcing contact and the first permanent current contact, characterized in that the insertion system of the resistance includes two auxiliary contacts, the first is electrically connected to the first contact of permanent current and the second is connected to the first contact arcing, in that these two auxiliary contacts are mounted moving relative to each other in the direction longitudinal so as to be able to approach one of the other, when the switch closes, to establish a connection that bypasses the resistor and so as to be united in displacement following the longitudinal direction, when closing the switch, before establishing said connection which
- the first arcing contact has the shape of a rod on which a metal block slides carrying the second auxiliary contact and this block is pushed in the longitudinal direction, when closing the switch, by a nozzle secured to the second contact arc.
- the duration of insertion of the resistance can be set to the speed of movement of the crew of mobile contacts.
- the block has a substantially conical end which fits into the nozzle. In this way, we remove the shock effect on the block when the switch closes, which contributes to put the block in motion at the same speed as the contact mobile.
- the block includes a tubular extension which extends in the direction longitudinal and on which an insulating piece slides integral with the first auxiliary contact, the extension tubular having an end forming a piston which cooperates with a recess in the insulating part of such so that the piston is made integral with the part insulating, when the switch closes, through play a depression created in the recess of the insulating part between the piston and the insulating part.
- the block includes an internal chamber which is divided by a radial shoulder of the stem of the first arcing contact, and in which a spring is placed in the chamber against the radial shoulder of the rod in such a way that moving the block along the stem of the first arcing contact, when the switch closes, causes the spring to compress as the chamber fills with gas and that when opening the switch, the spring when relaxing exerts a force recall which tends to automatically move the block in opposite direction at the same time as the gases are evacuated from the chamber through an orifice thereof, the orifice being further calibrated for resistance against the force of spring reminder.
- Such an arrangement makes it possible to obtain simple way with few parts and by pneumatic means, when the switch is opened, a disconnection of the auxiliary contacts effective only after disconnection of arcing contacts and current contacts permanent. Resistance cannot be inserted during opening the switch.
- the first contact auxiliary and the first permanent current contact are mounted integral on a tube movable in the direction longitudinal, and in which a spring is arranged against the movable tube to oppose the movement of this tube in the longitudinal direction, when closing the switch, this spring exerting a restoring force during of the switch opening which tends to move automatically the tube in said longitudinal direction and in a contrary direction.
- Figure 1 shows very schematically a switch according to the invention in open position complete.
- Figure 2 shows very schematically the switch of Figure 1 in a first position intermediate closure.
- Figure 3 shows very schematically the switch of figure 1 in a second position intermediate closure.
- Figure 4 shows very schematically the switch of Figure 1 in a third position intermediate closure.
- Figure 5 shows very schematically the switch of Figure 1 in a fourth position intermediate closure.
- Figure 6 shows very schematically the switch of Figure 1 in a closed position complete.
- the switch shown is a switch used for very high voltage. It includes in an envelope insulating or metallic 1 of substantially cylindrical shape, for example in porcelain, which extends in a direction longitudinal D, a first movable contact assembly 2 in direction D and a second set of contacts 3.
- the envelope is normally filled with a dielectric gas like SF6 under a pressure of a few bars to form a switching chamber.
- the switch shown in the figures presents a symmetry of revolution in direction D.
- the switch includes at the end of the break on the side of contact 3, resistance R which is conventionally inserted into the electrical circuit of the switch when closing it.
- the moving contact assembly 2 includes a contact permanent current 2A in the form of a crown of metal fingers and a hollow arc contact 2B also in the form of a crown of metallic fingers, the hollow arc contact 2B being arranged coaxially in contact 2A according to the direction D.
- These movable contacts 2A and 2B are carried by a 2C tube fitted with a piston (not shown) of gas compression to extinguish the arc upon opening of the switch as is well known.
- 2C tube also carries a 2D gas pipeline nozzle, the diverging, which is coaxial with contacts 2A and 2B following the direction D, opens with a diverging tulip on the side of the contact crew 3.
- the contact crew 2A, 2B with the 2D nozzle is moved in translation in the direction D by an operating member of the switch not shown.
- the contact arrangement 3 includes a current contact permanent 3A which is in the form of a crown of metal fingers arranged coaxially along the direction D at the crown of fingers of contact 2A and a arcing contact in the form of a rod 3B (possibly hollow) which extends in the direction D coaxially to the contact finger ring 2B.
- a current contact permanent 3A which is in the form of a crown of metal fingers arranged coaxially along the direction D at the crown of fingers of contact 2A
- a arcing contact in the form of a rod 3B possibly hollow
- the arcing contact in the form of a rod 3B fits into the movable hollow arc contact 2B through the 2D nozzle and the 3A contact engages the contact 2A.
- Resistor R is maintained in an insulating support 4 which is integral with the rod of the arcing contact 3B and extends in the direction D. This resistor R is connected electrically in series between the arcing contact 3B and the permanent current contact 3A although this does not appear not in the figures.
- a metal block 5 is slidably mounted on the rod 3B in electrical contact with it via of accordion contacts 6.
- Block 5 has one end of substantially conical shape adapted to fit into diverging from the nozzle neck and present on the surface outside of this conical end a bead peripheral 5A on which the edge of the the opening of the diverging portion of the 2D nozzle.
- This block 6 carries a first auxiliary arcing contact 7A which is in the form of a crown of fingers and which cooperates with a second auxiliary arcing contact 7B in the form of a tube, these two arcing contacts auxiliaries 7A and 7B used to short-circuit the resistance R when the switch closes.
- the fingers of contact 7A extend in direction D towards resistance R and the contact tube 7B extends in opposite direction, that is to say to the moving contact assembly 2.
- the auxiliary contact 7B is electrically connected to the 3A permanent current contact via a metal tube 8 which is mounted movable in the direction D in the envelope 1, on another fixed metal tube 9 in the envelope and which surrounds the resistance R.
- the tube metallic 8 is in electrical contact with the tube metallic 9 by means of sliding contacts 8A.
- Block 5 which carries the auxiliary contact 7A comprises an internal chamber 10 which is sealed through by rod 3B of the fixed arcing contact of crew 3, on which it slides.
- This room 10 is divided by a radial shoulder 11 of rod 3B (forming a sort of piston) on which a spring 12 is supported.
- Chamber 10 has 5B calibrated orifices allowing exhaust gases from inside the chamber 10. The spring 12 is compressed when block 5 is moved in direction D from top to bottom in Figure 1.
- Block 5 is extended by a tubular portion 5C which extends in the direction D by surrounding the rod 3B.
- An insulating part 13 is slidably mounted on this tubular portion 5C.
- the tubular portion 5C has a enlargement of the perimeter which forms a 5D piston suitable for come and break into an obviously 13A complementary to part 13.
- the piston 5D has valves 5E oriented in such a way that the gases in the recess 13A can be freed from this obviously when the 5D piston inserts in this obviously.
- the part 13 is integral with the tube 8 by through an insulating support cone 14 so that the tube 8 and therefore the contacts 3A and 7B are integral in movement in direction D with the insulating part 14.
- a spring 15 is disposed between the tube 8 and a shoulder of the tube 9. This spring 15 is compressed when the tube 8 is moved in direction D from top to bottom on Figure 1. In addition, the stroke of the tube 8 from top to bottom in Figure 1 is stopped by a stop formed by the end of the tube 9 and the insulating cone 14.
- arcing contacts auxiliaries 7A and 7B are separated by a certain distance dAX which can be used to adjust the insertion time of the resistance when closing the switch.
- this resistance insertion time can be adjusted by the distance dAX 'which corresponds to the stroke of the tube 8 until the insulating cone abuts against the edge of tube 9.
- the switch is in the fully positioned opened.
- Contacts 2A, 2B and 7A are separate contacts 3A, 3B and 7B respectively.
- the 5D piston is fully inserted into the recess 13A; there is no gas at the interface between the piston 5D and the insulating part 13 which creates depression.
- FIG. 2 a switch closing operation has begun.
- Crew 2 begins a closing race in direction D in the direction indicated by arrow F.
- Contacts 2A and 2B are brought closer to contacts 3A and 3B and an electric arc is created first between the contacts arc 2B and 3B.
- Current therefore flows from arcing contact 2B towards the arcing contact 3B.
- the distance dAX is large enough to avoid arcing electric between the auxiliary arcing contacts 7A and 7B.
- the current therefore crosses the rod of the arcing contact 3B and the resistance R which is inserted into the electrical circuit of the switch.
- the 2D nozzle was moved at the same time as the 2A contacts and 2B and struck the bead 5A on the surface tapered from the front end of block 5.
- this conical end of block 5 was first inserted gradually in the tulip-shaped diverging of the 2D nozzle which means that it will be set in motion without oscillations due to shock.
- Arc contact auxiliary 7A approaches the auxiliary arcing contact 7B until the distance dAX is small enough to that an electric arc is created between these two contacts.
- This connection between the two contacts 7A and 7B short-circuits resistance R the current therefore crosses the 2B arcing contact, 3B arcing contact, contacts accordion 6, metal block 5, arcing contact auxiliary 7A, auxiliary arcing contact 7B, tube 8, accordion contacts 8A and tube 9.
- FIG. 6 the switch is completely closed.
- the contacts 2A, 2B and 7A are connected to contacts 3A, 3B and 7B respectively, the connection of the current contacts permanent 2A and 3A established after connection of auxiliary arcing contacts 7A and 7B.
- block 5 a still been pushed in the direction of arrow F by the 2D nozzle and the spring 12 has been further compressed.
- the spring 15 has relaxed and exerted a restoring force which moved the tube 8 and therefore the contacts 3A and 7B in the opposite direction to arrow F.
- the tube 8 therefore returned to the position he occupied on the Figure 1 when the switch was fully open.
Landscapes
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Keying Circuit Devices (AREA)
Abstract
Description
Claims (6)
- Un interrupteur à gaz comprimé comprenant, dans une enveloppe (1) qui s'étend suivant une direction longitudinale (D), un premier équipage de contacts (2) incluant un premier contact de courant permanent (2A) et un premier contact d'arc (2B), un second équipage de contacts (3) mobile suivant la direction longitudinale par rapport au premier équipage de contacts et incluant un second contact permanent (3A) et un second contact d'arc (3B) destinés à se connecter respectivement au premier contact permanent et au premier contact d'arc, et un système d'insertion d'une résistance (R) lors de la fermeture de l'interrupteur, cette résistance étant reliée électriquement en série entre le premier contact d'arc et le premier contact de courant permanent, caractérisé en ce que le système d'insertion de la résistance comprend deux contacts auxiliaires dont le premier (7B) est relié électriquement au premier contact de courant permanent et le second (7A) est relié au premier contact d'arc, en ce que ces deux contacts auxiliaires sont montés mobiles l'un par rapport à l'autre suivant la direction longitudinale de telle façon à pouvoir se rapprocher l'un de l'autre, lors de la fermeture de l'interrupteur, pour établir une connexion qui court-circuite la résistance et de telle façon à être solidaires en déplacement suivant la direction longitudinale, lors de la fermeture de l'interrupteur, avant d'établir ladite connexion qui court-circuite la résistance.
- L'interrupteur selon la revendication 1, dans lequel le premier contact d'arc a la forme d'une tige sur laquelle coulisse un bloc métallique (5) portant le second contact auxiliaire et dans lequel ce bloc est poussé suivant la direction longitudinale, lors de la fermeture de l'interrupteur, par une buse (2D) solidaire du second contact d'arc.
- L'interrupteur selon la revendication 2, dans lequel le bloc (5) présentant une extrémité sensiblement conique qui s'emboíte dans la buse (2D).
- L'interrupteur selon la revendication 2, dans lequel le bloc comporte une prolongation tubulaire (5C) qui s'étend suivant la direction longitudinale et sur laquelle coulisse une pièce isolante (13) solidaire du premier contact auxiliaire, la prolongation tubulaire présentant une extrémité formant un piston (5D) qui coopère avec un évidement (13A) dans la pièce isolante de telle manière que le piston est rendu solidaire de la pièce isolante, lors de la fermeture de l'interrupteur, par le jeu d'une dépression créée dans l'évidement de la pièce isolante entre le piston et la pièce isolante.
- L'interrupteur selon la revendication 2, dans lequel le bloc (5) comprend une chambre interne (10) qui est divisée par un épaulement radial (11) de la tige du premier contact d'arc, et dans lequel un ressort (12) est placé dans la chambre contre l'épaulement radial de la tige de telle façon que le déplacement du bloc le long de la tige du premier contact d'arc, lors de la fermeture de l'interrupteur, provoque la compression du ressort en même temps que la chambre se remplit de gaz et que, lors de l'ouverture de l'interrupteur, le ressort en se détendant exerce une force de rappel qui tend à déplacer automatiquement le bloc en sens inverse en même temps que les gaz sont évacués de la chambre par un orifice (5B) de celle-ci, l'orifice étant en outre calibré pour que s'exerce une résistance contre la force de rappel du ressort.
- L'interrupteur selon la revendication 1, dans lequel le premier contact auxiliaire (7B) et le premier contact de courant permanent (3A) sont montés solidaires sur un tube mobile (8) suivant la direction longitudinale, en dans lequel un ressort (15) est disposé contre le tube mobile (8) pour s'opposer au déplacement de ce tube suivant la direction longitudinale, lors de la fermeture de l'interrupteur, ce ressort exerçant une force de rappel lors de l'ouverture de l'interrupteur qui tend à déplacer automatiquement le tube selon ladite direction longitudinale et dans un sens contraire.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9811244 | 1998-09-09 | ||
FR9811244A FR2783088B1 (fr) | 1998-09-09 | 1998-09-09 | Interrupteur avec un systeme d'insertion d'une resistance a longue duree d'insertion |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0986081A1 true EP0986081A1 (fr) | 2000-03-15 |
EP0986081B1 EP0986081B1 (fr) | 2006-05-24 |
Family
ID=9530253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99402150A Expired - Lifetime EP0986081B1 (fr) | 1998-09-09 | 1999-08-31 | Interrupteur avec un système d'insertion d'une résistance à longue durée d'insertion |
Country Status (6)
Country | Link |
---|---|
US (1) | US6239399B1 (fr) |
EP (1) | EP0986081B1 (fr) |
CN (1) | CN1135584C (fr) |
CA (1) | CA2281971C (fr) |
DE (1) | DE69931441D1 (fr) |
FR (1) | FR2783088B1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4235340B2 (ja) * | 2000-04-04 | 2009-03-11 | キヤノン株式会社 | 情報処理装置及び情報処理方法 |
US7473863B2 (en) * | 2003-02-06 | 2009-01-06 | Cooper Technologies Company | High voltage operating rod sensor and method of making the same |
US7078643B2 (en) * | 2003-12-15 | 2006-07-18 | Rostron Joseph R | Capacitor switch with internal retracting impedance contactor |
FR2953639B1 (fr) * | 2009-12-09 | 2012-01-13 | Areva T & D Sas | Disjoncteur a haute tension a ecran amovible pour l'amelioration du gradient de champ |
CN104299841B (zh) * | 2014-04-25 | 2016-11-23 | 国家电网公司 | 灭弧室及使用该机构的断路器 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2737937A1 (fr) * | 1995-08-18 | 1997-02-21 | Gec Alsthom T & D Sa | Disjoncteur a double mouvement avec resistance de fermeture |
FR2751781A1 (fr) * | 1996-07-24 | 1998-01-30 | Gec Alsthom T & D Sa | Disjoncteur avec insertion temporaire de resistance a la fermeture |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2450501A1 (fr) * | 1979-03-02 | 1980-09-26 | Alsthom Cgee | Dispositif d'insertion de resistance a la fermeture d'un appareil d'interruption |
US4393291A (en) * | 1979-10-12 | 1983-07-12 | Brush Switchgear Limited | Gas blast interrupters |
FR2649531B1 (fr) * | 1989-07-04 | 1995-11-10 | Alsthom Gec | Disjoncteur a haute ou moyenne tension |
FR2676587B1 (fr) * | 1991-05-17 | 1994-06-10 | Alsthom Gec | Disjoncteur a grand pouvoir de coupure. |
FR2737936B1 (fr) * | 1995-08-18 | 1997-09-19 | Gec Alsthom T & D Sa | Disjoncteur muni d'une resistance de fermeture avec dispositif d'insertion |
FR2748597B1 (fr) * | 1996-05-13 | 1998-06-12 | Gec Alsthom T & D Sa | Disjoncteur a haute tension avec insertion de resistance a la fermeture |
-
1998
- 1998-09-09 FR FR9811244A patent/FR2783088B1/fr not_active Expired - Fee Related
-
1999
- 1999-08-31 EP EP99402150A patent/EP0986081B1/fr not_active Expired - Lifetime
- 1999-08-31 DE DE69931441T patent/DE69931441D1/de not_active Expired - Lifetime
- 1999-09-07 CA CA002281971A patent/CA2281971C/fr not_active Expired - Fee Related
- 1999-09-08 US US09/392,337 patent/US6239399B1/en not_active Expired - Fee Related
- 1999-09-09 CN CNB991185803A patent/CN1135584C/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2737937A1 (fr) * | 1995-08-18 | 1997-02-21 | Gec Alsthom T & D Sa | Disjoncteur a double mouvement avec resistance de fermeture |
FR2751781A1 (fr) * | 1996-07-24 | 1998-01-30 | Gec Alsthom T & D Sa | Disjoncteur avec insertion temporaire de resistance a la fermeture |
Also Published As
Publication number | Publication date |
---|---|
EP0986081B1 (fr) | 2006-05-24 |
CA2281971A1 (fr) | 2000-03-09 |
CN1248780A (zh) | 2000-03-29 |
FR2783088A1 (fr) | 2000-03-10 |
DE69931441D1 (de) | 2006-06-29 |
CN1135584C (zh) | 2004-01-21 |
US6239399B1 (en) | 2001-05-29 |
FR2783088B1 (fr) | 2000-10-13 |
CA2281971C (fr) | 2004-06-15 |
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