EP0592338B1 - Mécanisme pour sectionneur de mise à la terre - Google Patents
Mécanisme pour sectionneur de mise à la terre Download PDFInfo
- Publication number
- EP0592338B1 EP0592338B1 EP19930420392 EP93420392A EP0592338B1 EP 0592338 B1 EP0592338 B1 EP 0592338B1 EP 19930420392 EP19930420392 EP 19930420392 EP 93420392 A EP93420392 A EP 93420392A EP 0592338 B1 EP0592338 B1 EP 0592338B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- switch
- bearing shaft
- earthing switch
- dead point
- 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
- 230000007246 mechanism Effects 0.000 title claims description 59
- 230000007935 neutral effect Effects 0.000 description 20
- 230000001419 dependent effect Effects 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/10—Interlocking mechanisms for interlocking two or more switches
Definitions
- the invention relates to the field of electrical protection cells, for example for the protection of a medium voltage transformer, comprising a switch or a circuit breaker arranged in series with an earthing switch. It relates to more particularly the disconnector opening and closing mechanism, from maneuvers of the operating member associated with the switch.
- such a mechanism can be a passage mechanism of neutral point capable of being coupled, via a mechanism interlocking, to the operating member of the switch associated in series with the earthing switch, so that the operating member of the switch controls simultaneously opening the switch and closing the earthing switch, respectively closing the switch and opening the earthing switch.
- the earthing switch comprises a fixed contact connected electrically at the switch, and a movable contact carried by a contact-carrying shaft rotating and earthed.
- document US-A-3,735,073 discloses a single switch comprising a double spring mechanism, a first spring to flip the switch of the open position to the closed position, and a second spring to overcome the forces electromagnetic when an electrical fault occurs.
- the invention aims to remedy the drawback mentioned above, by proposing a particularly reliable and safe mechanism with regard to electrical protection provided by the cell.
- the passage from the neutral point of the first mechanism takes place substantially at the end of the stroke of the operating member associated with the switch, and the first angular position corresponds to the position of the contact carrier shaft in stable position disconnector open.
- the operation of the operating member is so-called “independent”, that is to say that the rotary contact shaft does not start actually in motion only when the operating member is almost at the end and therefore the switch is already in the open position.
- the operation of the operating member is said to be “dependent”, that is to say that the setting in motion of the operating member directly results in a movement of the contact carrier shaft.
- the first mechanism is located at one end of the axis of rotation of the contact carrier shaft, while the second mechanism is located at the other end of said axis of rotation.
- the protection cell 1 has an inlet electrical 2 and an electrical outlet 6. Connected in series between inlet 2 and outlet 3, there is for example a switch or a circuit breaker 3 with three positions (closed, open, earthed) with break in SF6 gas, fuse 4 and a disconnector earth 5.
- the disconnector 5 conventionally comprises a fixed contact 8 and a contact rotary mobile 7.
- An interlocking mechanism 11 is provided between the operation 13 of the switch 3 and the opening and closing mechanism of the disconnector 5, so that the drive of the operating member 13 controls simultaneously opening the switch 3 and closing the disconnector 5, respectively the closing of the switch 3 and the opening of the disconnector 5.
- protection cell 1 will have three circuits electrical identical to that of Figure 2, arranged in parallel. Such a cell protection is particularly well suited for the protection of transformers medium voltage.
- FIG. 3 illustrates a three-phase disconnector comprising three fixed contacts 8a, 8b and 8c and three movable contacts 7a, 7b and 7c, the latter being mounted on a carrier shaft contact 9, pivotally mounted about an axis 10.
- the mechanism opening and closing of the disconnector is coupled to the operating member 13 of the switch 3 by means of a locking rod 11 movable in translation along its length.
- One of the ends of the rod 11 carries a connecting rod 12 articulated on the member of rotary operation 13 of switch 3, while the other end carries a guide 11a provided with a rectilinear light 34 arranged parallel to the rod 11 and intended to cooperate with the disconnector mechanism 5.
- the disconnector mechanism comprises a first 30 and a second 20 mechanisms at neutral.
- the passage mechanisms to neutral 20 and 30 are located on either side of the axis 10 of rotation of the carrier shaft contact 9 so as to balance the mobile assembly.
- the first neutral passage mechanism 30 illustrated in FIGS. 4 to 6, 8, 9 and 11 is supported by a fixed frame 40a on which the axis 10 of the carrier shaft is mounted contact 9.
- the mechanism 30 comprises a crank 32 rotatably mounted around a axis 33 carried by a fixed frame 40a.
- Crank 32 is equipped with a first roller 35 which cooperates with the rectilinear light 34 of the guide 11a, and of a second roller 36 which cooperates with a light 37 of complex shape, formed in part 9a of the tree contact carrier 9.
- the crank 32 is biased by an anchored tension spring 31, of a on the crank 32 at point 31a, and on the other hand on the fixed frame 40a at point 31b.
- the contact-carrying shaft 9 forms a angle ⁇ with respect to a fixed arbitrary reference, for example the horizontal in the case present.
- the second neutral passage mechanism 20 illustrated in FIGS. 7 and 10 comprises a tension spring 21 anchored, on the one hand at point 21a on a bevel gear 9b integral with the contact-carrying shaft 9, and on the other hand on the fixed frame 40b at point 21b.
- the contact-carrying shaft 9 therefore remains stationary. After a certain idle stroke, the organ maneuver 13 being practically at the end of its travel, the end of the light 34 comes abut on the roller 35 and causes the crank 32 to rotate about the axis 33.
- the spring 31 resistant so far, comes to take its neutral position ( Figure 5, the points 31a, 33 and 31b are aligned), the contact carrier shaft 9 still having not moved due to the free movement of the roller 36 inside the slot 37.
- the spring 31 As soon as the spring 31 has passed its neutral position, it becomes a motor and puts the shaft contact 9 in rotation through the roller 36 and the light 37.
- the maneuver 13 arrived at the end of the race ( Figure 6).
- the closing of the disconnector 5 is said to be independent, the displacement of the shaft carries contact 9 not being directly coupled to the drive of the operating member 13, because it is slightly delayed. It will thus be understood that any foreign body preventing accidentally closing the disconnector 5, cannot in any case prevent the opening of the switch 3.
- the contact carrying shaft 9 can be fitted with a angular position indicator, it will then suffice to check, before any intervention on the installation, that the disconnector 5 is indeed closed.
- the passage of the neutral point of the spring 31 when the disconnector is closed corresponds to the angular position ⁇ of the contact carrier arm in open position; however, those skilled in the art will understand easily that this feature is not imperative.
- the angular position ⁇ of the passage of the neutral point of the spring 21 associated with the mechanism 20 should always be between the angular positions ⁇ and ⁇ of the passages the neutral point of the spring 31 associated with the mechanism 30, respectively at closing and when the disconnector opens.
- the passage from the neutral point of the mechanism 30 precedes the passage of the neutral point of the mechanism 20, whatever the direction of the maneuver of the control member 13; preferably these three angular positions ⁇ and ⁇ and ⁇ are closer to the open position than to the closed position.
Landscapes
- Mechanisms For Operating Contacts (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Gas-Insulated Switchgears (AREA)
Description
- la figure 1 représente schématiquement, à titre illustratif, une cellule de protection destinée à recevoir un mécanisme selon l'invention;
- la figure 2 représente le schéma électrique de la cellule représentée à la figure 1;
- la figure 3 est une vue en perspective de l'arbre porte contact du sectionneur équipé d'un mécanisme selon un mode particulier de réalisation de l'invention;
- les figures 4,5 et 6 sont des vues latérales détaillées de droite d'un mode de réalisation du premier mécanisme associé à l'arbre porte contact de la figure 3, le premier mécanisme étant respectivement représenté en position stable ouvert, puis au passage de son point mort lors de l'entraínement de l'organe de manoeuvre en vue de la fermeture du sectionneur, et enfin à la fin de l'entraínement de l'organe de manoeuvre pour la fermeture du sectionneur;
- la figure 7 est une vue latérale détaillée de gauche d'un mode de réalisation du second mécanisme associé à l'arbre porte contact de la figure 3, le second mécanisme étant représenté au passage de son point mort lors de la fermeture du sectionneur;
- les figures 8 et 9 sont des vues latérales détaillées de droite du premier mécanisme respectivement représenté en position stable fermée, et au passage de son point mort lors de l'entraínement de l'organe de manoeuvre en vue de l'ouverture du sectionneur;
- la figure 10 est une vue latérale détaillée de gauche du second mécanisme représenté au passage de son point mort lors de l'ouverture du sectionneur; et
- la figure 11 est une vue latérale détaillée de droite du premier mécanisme représenté à la fin de l'entraínement de l'organe de manoeuvre pour l'ouverture du sectionneur.
Claims (8)
- Mécanisme à passage de point mort pour sectionneur de terre (5), destiné à être couplé par l'intermédiaire d'un mécanisme d'interverrouillage (11) à l'organe de manoeuvre (13) d'un interrupteur (3) associé en série audit sectionneur, de sorte que l'organe de manoeuvre de l'interrupteur commande simultanément l'ouverture de l'interrupteur (3) et la fermeture du sectionneur (5), respectivement la fermeture de l'interrupteur (3) et l'ouverture du sectionneur (5), ledit sectionneur comprenant un contact fixe (8) relié électriquement à l'interrupteur, et un contact mobile (7) porté par un arbre porte contact (9) rotatif et relié électriquement à la terre, caractérisé par le fait qu'il comprend:un premier mécanisme (30) à passage de point mort activé par les mouvements de l'organe de manoeuvre (13), et dont le passage du point mort correspond, d'une part à une première position angulaire (a) de l'arbre porte contact (9) lors de la fermeture du sectionneur, et d'autre part à une seconde position angulaire (a) de l'arbre porte contact (9) lors de l'ouverture du sectionneur, ledit premier mécanisme (30) comprenant un premier ressort (31) attaché à l'une de ses extrémités à un châssis fixe (40a) et à l'autre extrémité à une manivelle (32) qui pivote autour d'un axe fixe (33) et qui coopère d'une part avec le mécanisme d'interverrouillage (11a) ; et d'autre part avec l'arbre porte contact (9), le point mort du premier ressort (31) étant établi lorsque ce dernier est aligné avec l'axe de pivotement de la manivelle (32) ; etun second mécanisme (20) à passage de point mort activé par les mouvements de l'arbre porte contact (9), et dont le passage du point mort correspond à une troisième position angulaire (β) de l'arbre porte contact, située entre lesdites première et seconde positions angulaires; le passage du point mort du premier mécanisme (30) précèdant, aussi bien à l'ouverture qu'à la fermeture du sectionneur, le passage du point mort du second mécanisme (20), ledit second mécanisme (20) comprenant un second ressort (21) attaché à l'une de ses extrémités à un châssis fixe (40b), et à l'autre extrémité à l'arbre porte contact (9b), le point mort du second ressort (21) étant établi lorsque ce dernier est aligné avec l'axe de rotation de l'arbre porte contact (9).
- Mécanisme selon la revendication 1, caractérisé par le fait que le passage du point mort du premier mécanisme (30) s'effectue sensiblement en fin de course de l'organe de manoeuvre (13).
- Mécanisme selon l'une des revendications 1 ou 2, caractérisé par le fait que ladite première position (a) correspond à la position de l'arbre porte contact en position stable ouverte du sectionneur.
- Mécanisme selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que lesdites première (α), seconde (α) et troisième (β) positions angulaires de l'arbre porte contact (9) sont plus proches de la position stable ouverte du sectionneur que de la position stable fermée du sectionneur.
- Mécanisme selon l'une quelconque des revendications 1 à 4, caractérisé par le fait que ladite manivelle (32) coopère d'une part avec le mécanisme d'interverrouillage (11a) par l'intermédiaire d'un premier moyen de guidage (34,35), et d'autre part avec l'arbre porte contact (9), par l'intermédiaire d'un second moyen de guidage (36,37).
- Mécanisme selon la revendication 5, caractérisé par le fait que le premier moyen de guidage est constitué par un premier galet (35) solidaire de la manivelle (32) et par une première lumière (34) rectiligne pratiquée dans une tige d'interverrouillage (11a) et que le second moyen de guidage est constitué par un second galet (36) solidaire de la manivelle (32) et par une seconde lumière (37) de forme complexe pratiquée dans l'arbre porte contact (9a).
- Mécanisme selon l'une quelconque des revendications 1 à 6, caractérisé par le fait que ledit premier mécanisme (30) est situé à l'une des extrémités de l'axe de rotation (10) de l'arbre porte contact (9), tandis que le second mécanisme (20) est situé à l'autre extrémité dudit axe de rotation.
- Mécanisme selon la revendication 7, caractérisé par le fait que la forme de la lumière (37) et la position relative de la manivelle (32) et de son galet (36) sont adaptés à assurer l'irréversibilité du mécanisme dans les positions stables ouverte et fermée.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9212276A FR2696869B1 (fr) | 1992-10-09 | 1992-10-09 | Mécanisme pour sectionneur de mise à la terre. |
FR9212276 | 1992-10-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0592338A1 EP0592338A1 (fr) | 1994-04-13 |
EP0592338B1 true EP0592338B1 (fr) | 1998-03-04 |
Family
ID=9434527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930420392 Expired - Lifetime EP0592338B1 (fr) | 1992-10-09 | 1993-10-04 | Mécanisme pour sectionneur de mise à la terre |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0592338B1 (fr) |
DE (1) | DE69317198T2 (fr) |
ES (1) | ES2114024T3 (fr) |
FR (1) | FR2696869B1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2773001B1 (fr) * | 1997-12-19 | 2000-01-21 | Schneider Electric Sa | Cellule a moyenne tension a isolement gazeux, et a tenue dielectrique elevee |
DE602004025223D1 (de) | 2004-07-12 | 2010-03-11 | Abb Technology Ag | Erdungsschalter |
CN102025116B (zh) * | 2010-12-17 | 2012-11-14 | 安徽鑫龙电器股份有限公司 | 高压开关设备联锁装置 |
DE102020202689B4 (de) | 2020-03-03 | 2022-06-09 | Siemens Aktiengesellschaft | Schaltanordnung für Mittelspannung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE611677C (de) * | 1929-11-27 | 1935-04-02 | Neumann Hochspannungs App G M | Verteilungsanlage mit Sammelschienensystem, Schaltvorrichtungen und Erdungsschaltern |
US3735073A (en) * | 1971-11-30 | 1973-05-22 | Westinghouse Electric Corp | Circuit interrupter with overcenter spring charging means |
DE2453194A1 (de) * | 1974-11-09 | 1976-05-13 | Bbc Brown Boveri & Cie | Einschaltsicherer erdungsschalter fuer elektrische schalter |
US4636594A (en) * | 1985-09-24 | 1987-01-13 | G & W Electric Company | Switch with auxiliary biasing mechanism |
-
1992
- 1992-10-09 FR FR9212276A patent/FR2696869B1/fr not_active Expired - Fee Related
-
1993
- 1993-10-04 EP EP19930420392 patent/EP0592338B1/fr not_active Expired - Lifetime
- 1993-10-04 ES ES93420392T patent/ES2114024T3/es not_active Expired - Lifetime
- 1993-10-04 DE DE1993617198 patent/DE69317198T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2114024T3 (es) | 1998-05-16 |
DE69317198D1 (de) | 1998-04-09 |
DE69317198T2 (de) | 1998-12-03 |
FR2696869B1 (fr) | 1994-12-02 |
FR2696869A1 (fr) | 1994-04-15 |
EP0592338A1 (fr) | 1994-04-13 |
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