EP1914780B1 - Disjoncteur-sectionneur à fusibles et dispositif de verrouillage pour un disjoncteur-sectionneur à fusibles - Google Patents

Disjoncteur-sectionneur à fusibles et dispositif de verrouillage pour un disjoncteur-sectionneur à fusibles Download PDF

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Publication number
EP1914780B1
EP1914780B1 EP20070118567 EP07118567A EP1914780B1 EP 1914780 B1 EP1914780 B1 EP 1914780B1 EP 20070118567 EP20070118567 EP 20070118567 EP 07118567 A EP07118567 A EP 07118567A EP 1914780 B1 EP1914780 B1 EP 1914780B1
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EP
European Patent Office
Prior art keywords
fuse
shaft
blocking
locking device
circuit breaker
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.)
Active
Application number
EP20070118567
Other languages
German (de)
English (en)
Other versions
EP1914780A2 (fr
EP1914780A3 (fr
Inventor
Gerhard Blaimer
Rolf-Eberhard Bruschke
Robert Protz
Steffen Scudlo
Alfred Stang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1914780A2 publication Critical patent/EP1914780A2/fr
Publication of EP1914780A3 publication Critical patent/EP1914780A3/fr
Application granted granted Critical
Publication of EP1914780B1 publication Critical patent/EP1914780B1/fr
Active legal-status Critical Current
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Classifications

    • 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
    • H01H31/12—Adaptation for built-in fuse
    • H01H31/122—Fuses mounted on, or constituting the movable contact parts of, the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0208—Tools for inserting and removing fuses

Definitions

  • the invention relates to a fuse switch disconnector with a housing and a lid pivotable relative to the housing, wherein in the lid fuses with hammer heads are inserted.
  • the invention also relates to a locking device for use in such a fuse switch disconnector.
  • a slot is provided in the lid, which is wider than the neck 16 but less wide than the head 18, so that the fuse can be pushed with the neck 16 along the slot, the head 18 then ensures the grip on the slot ,
  • the fuses when they reach the end of the slot, pressed into retaining springs. When removing, they must then be pushed out by applying force to the fuse. This is awkward. From the EP 0 802 551 A2 is the Using a locking slide known that holds the fuses. The locking slide is actuated from outside the lid, which is also cumbersome. If it is pressed, the fuses partially fall out immediately, which can lead to unsafe situations.
  • the DE 78 08 071 U1 discloses in a second embodiment already a fuse switch disconnector with a push-on handle with NH fuse cartridges, which are provided at both ends with contact blades.
  • the push-on handle also forms the cover of a fuse base and is attached to the fuse base of the circuit breaker, the contact blades contact with the associated contacts of the fuse base.
  • Flanges arranged on the end faces of the security cartridge serve to insert and remove the security cartridge, the ends of which are T-shaped and secured in corresponding recesses of the push-on handle.
  • Under the cover of the fuse base is to a fixed latch and a movable latch, which is displaceable by means of a rotatable about an axis rocker arm.
  • the attachment of the handle is done by hanging the fixed latch in the T-shaped end of a flange extension.
  • the movable latch is brought by operation of the rocker arm with the T-shaped end of the other flange extension engaged and held by a spring in the locked position.
  • the blocking element for each fuse comprises two rods which are perpendicular to the shaft and whose spacing is greater than the width of a hammer head of a fuse, which are pivoted around the hammer head for locking and carry locking components at their ends.
  • the fuse switch disconnector according to the invention is thus characterized by a blocking element arranged on a shaft.
  • the blocking element is tiltable in a receiving position in which it does not hinder insertion of the fuse. In a blocking position, however, the blocking element blocked the hammer head of a so inserted fuse in its mobility and thus prevents the inserted fuse (accidentally) is pushed out again.
  • the blockade element only has to ensure that the hammer head (with typical installation of a fuse switch-disconnector) is obstructed and locked in its upward mobility.
  • the blockade element works back and forth and must have an obstacle of some sort to actually obstruct the hammer head.
  • Two embodiments of the blocking element have proved to be particularly advantageous. Both have in common that the blocking element for each fuse comprises two rods (perpendicular) away from the shaft, whose distance is greater than the width of a hammer head of a fuse. The rods can thus swing around the hammer head and wear at its end then those components (locking components), the hammer head lock.
  • blocking pieces perpendicularly project from the ends of the bars, respectively, being aligned with each other, the ends of the blocking pieces being spaced apart by a distance smaller than the width of a hammer head of a fuse.
  • the hammerhead can then move between the bars, but not between the blockade pieces.
  • the blockade pieces prevent the hammer head from moving upwards and thus the fuse can be accidentally or deliberately removed.
  • the two ends of the rods are simply connected to each other via a web, so instead of the two short Blockade consultancyen a long single blockage piece is provided. Due to the bridge, the hammer head can certainly not pass through, so that this blocking element ensures reliable locking.
  • the shaft is acted upon by spring force, in such a way that it assumes the blocking position under spring action, whereby the blocking element is optionally moved from the receiving position to the blocking position.
  • the blocking position of the blocking element becomes the actual basic position, and the receiving position represents an exceptional situation.
  • This exceptional situation is preferably generated by means of the hammer head.
  • a slot in each of the securing a slot in the lid is arranged on which the hammer head is inserted (in which thus the above-mentioned neck 16 of the hammer head 14 is inserted while the actual head 18 is passed beyond the slot).
  • the shaft with the blocking element is then arranged relative to the slot so that when inserting the fuse a hammer head presses the blocking element against the spring force in the receiving position.
  • the hammer head thus ensures that it can be pushed further. If the hammer head pushed far enough, he no longer pushes against the blockage element, and this snaps behind the hammer head under the spring force again and takes the blocking position.
  • the hammer head presses in a preferred embodiment of the blocking element either against the two aforementioned blockade pieces and thus tilts the blocking element and rotates the shaft, or he presses against the above-mentioned web.
  • the spring force can in principle be provided by a metal torsion spring.
  • it is provided by an element which is attracted to the shaft and which is supported in the cover.
  • the locking device can thereby be provided and installed as a component, without having to pay too much attention to the spring loading.
  • the spring force is advantageously used to define the blocking position as a basic position.
  • the hammerhead can make its own way on insertion.
  • the shaft may include an actuator even when spring loaded. This should be accessible to an operator from the front of the lid.
  • the shaft can be turned by hand against the action of the spring force with the aid of the actuating element be so that can be transferred from the blocking position back to the receiving position, which is also a removal position, because even the removal of the fuse is not hindered.
  • the actuating element may be a simple rod, which protrudes from the shaft in a direction other than the bars of the blocking element, and at whose end optionally a handle-like element is formed.
  • Standard fuse switch disconnectors include three fuses so that the cover is designed to accept three fuses. It is now possible that a single locking device is used for all three fuses, ie a single shaft is provided on which a blocking element is arranged for each fuse. Alternatively, each fuse may have its own shaft with a blocking element attached thereto. In principle, the single-shaft embodiment can be made more compact, while the embodiment in which a separate latch is used for each fuse may be more appropriate when the fuse-switch-disconnector is made slightly wider.
  • the locking device according to the invention for use in a fuse switch disconnector comprises a shaft and at least one arranged on the shaft blockage element for a hammer head of a fuse.
  • the blocking element preferably comprises two bars projecting perpendicularly from the shaft, and there is the alternative that a blocking piece is arranged at the ends of each bar, the blocking pieces of both bars facing each other, or that the ends of the bars are connected to each other via a web are.
  • a spring element in particular a recessed spring bar.
  • An actuating lever may be arranged as an additional element to the blocking element on the shaft. Regardless of whether the spring element is provided, such a lever may be useful to rotate the shaft.
  • the locking device may comprise a single blockage element so that three such locking devices are to be provided in a fuse switch disconnector with three fuses, but it may also comprise three blockage elements for hammer heads of fuses.
  • the locking device is made in one piece from plastic, for. B. injection molded. Shaft and blocking element and optionally spring element and actuating lever are thus produced in one operation, and the locking device is available as a compact built element available.
  • fuses in a cover of a fuse switch-disconnector and in particular their unintentionally releasable hold (lock) in the lid.
  • the fuses were already mentioned at the beginning with reference to 1 and FIG. 2 described. 3 and FIG. 4 now show a cover of a fuse switch disconnector without such fuses.
  • a generally designated 20 such lid includes three compartments 22, each serving to receive a fuse.
  • the fuses are with the help of their hammer heads 14 (see. FIG. 1 ) in the lid.
  • a slot portion is provided, namely an upper slot portion 24 and a lower slot portion 26.
  • Both slot portions 24 and 26 have a straight-line slot portion which is wider than the neck 16 of the hammer head 14 (see. FIG. 2 ), but is less wide than the head portion 18 of the hammer head 14.
  • the slot portion merges into a funnel-shaped portion which reaches the width of the hammer head portion 18.
  • a rotatable locking device is provided which is rotatably mounted in a bearing 28.
  • Such a locking device 30 is in FIG. 5 shown.
  • the core thereof a shaft 32.
  • the blocking elements 34 consist of vertically projecting from the shaft 32 bars 36 and a connecting the ends of the bars web 38. In other direction than the blocking elements 34 are from the shaft 32 two bow-shaped spring elements (spring clip) 40 from.
  • the locking device 30 comprises FIG. 5 two actuators 42, which are formed on the shaft in the manner of a plate, which comprise a grip element 44 for engaging.
  • brackets 40 and actuators 42 are not critical. Notwithstanding the in FIG. 5 In the embodiment shown, the spring clips 40 can also be arranged somewhat further outwards, and the actuating elements 42 are then arranged between the bars 36.
  • FIGS. 6 to 12 Such a modified embodiment of a locking device 30 'is in the FIGS. 6 to 12 shown.
  • the locking device 30 'differs from the locking device 30 FIG. 5 also in that the ends of the rods 36 are not connected to each other by a complete web, but that on each of the rods only a blockade piece 46 protrudes.
  • the FIGS. 6 to 12 show the lid 20 FIG. 3 respectively.
  • the FIGS. 6 to 10 further show the locking device 30 'each in a blocking position.
  • a hammer head 14 is in the slot portion 26 (see. 3 and 4 ) shown inserted.
  • the actual head portion 18 is, as mentioned above, wider than the lower portion of the slot portion 26 and must be prevented from slipping back up into the funnel-shaped portion of the slot portion 26 upwards.
  • the blocking pieces 46 are located just above the hammer head 14 and prevent it from sliding upwards.
  • the rods 36 in this case surround the hammer head (see. FIG. 9 ), which is possible because their distance is greater than the width of the hammer head. (The width of the distance between the blocking pieces 46 is smaller than the width of the hammer head, as in FIG. 9 good to see.)
  • the spring clips 40 are, as in FIG. 12 is shown supported in the lid 20.
  • the shaft 32 is always rotated so that the blocking element occupies the blocking position with the rods 36 and the blocking pieces 46.
  • the position accordingly FIG. 11 Can only be taken by force against the spring force.
  • the hammer head 14 of the fuse 48 can move upwards and thus be guided out of the slot part 26.
  • the position according to FIG. 11 in which the blocking element is in the receiving position (which is also removal position), is obtained, for example, that on the handle member 44 and thus the actuating element 42, a force is exerted on the shaft 32.
  • the grip element 44 is accessible to a user from the front side of the cover 20.
  • the operation of the handle member 44 is not required, because when the hammer head 14 in the slot portion 26 (see 3 and FIG. 4 ) is guided from top to bottom, he automatically pushes the blocking pieces 46 (or in the embodiment according to FIG FIG. 5 the web 38) away, rotates the shaft 32, and a long movement of the hammer head 14 down is possible. Then snaps under the action of the spring clip 40, the shaft back to the starting position (blocking position), so that the in FIG. 10 shown situation in which the hammer head 14 is locked.
  • a locking element is used to lock the hammer heads 14 of three fuses 48.
  • a locking element 50 is provided for each individual fuse.
  • the components of the locking device 50 are basically interpretable as the corresponding components of the locking device 30 or 30 ', so that corresponding components with the same reference numbers as the components of the locking device 30 from FIG. 5 are provided.
  • the locking device 50 which must be provided for each fuse is one opposite the lid 20 from 3 and FIG. 4 slightly modified cover 20 'provide, in particular for each of the shafts 32' of the locking elements 50 'has its own camp in a modification of the bearing 28 from FIG. 4 must provide (not shown).
  • FIGS. 14 to 16 show the locking element in the blocking position, in which a plate 38 ', which connects the bars 36' together, and which replaces the web 38 of the locking device 30 in this embodiment, is located exactly above a hammer head 14 and thus locks it.
  • the springs push the shaft here in the blocking position.
  • the hammer head 14 pushes when inserting into the lid 20 'the plate 38' away, rotates the shaft 32 'and thus creates itself the way down until the hammer head 14, the plate 38' has passed along and the space between the Bars 36 'achieved.
  • the embodiments of the locking device 30 or 30 'and 50 have in common that the shaft between the receiving position (which is equal to the removal position) and the blocking position must be rotated only by a small angle of about 15 to 20 degrees.
  • the locking mechanism is therefore relatively inexpensive.
  • the locking means 30, 30 'and 50 may be injection molded in one piece of plastic, thereby also being inexpensive.

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  • Fuses (AREA)

Claims (18)

  1. Disjoncteur-sectionneur à fusibles ayant un corps et un couvercle ( 20 , 20' ) pouvant pivoter par rapport au corps, des fusibles ( 48 ) à tête de marteau ( 14 ) pouvant être insérés dans le couvercle ( 20 ),
    comprenant un élément ( 34 , 34' ) de blocage, qui est monté sur un arbre ( 32 , 32' ), qui peut venir en basculant dans une position de réception dans laquelle il n'empêche pas une introduction du fusible ( 48 ) et qui, dans une position de blocage, bloque dans sa mobilité la tête de marteau ( 14 ) d'un fusible ( 48 ) ainsi introduit et empêche ainsi le fusible introduit de ressortir, caractérisé
    en ce que l'élément ( 34 ) de blocage comprend pour chaque fusible deux barres ( 36 ) qui partent perpendiculairement de l'arbre ( 32 ), dont l'écartement est plus grand que la largeur d'une tête de marteau ( 14 ) d'un fusible ( 48 ) qui, pour le verrouillage autour de la tête de marteau, pivotent et qui portent à leur extrémité des pièces de verrouillage.
  2. Disjoncteur-sectionneur à fusibles suivant la revendication 1,
    caractérisé en ce que
    les pièces de verrouillage sont des pièces ( 46 ) de blocage, qui partent respectivement des extrémités des barres et qui peuvent être alignées l'une sur l'autre, leurs extrémités étant à une distance qui est plus petite que la largeur d'une tête de marteau ( 14 ) d'un fusible ( 48 ).
  3. Disjoncteur-sectionneur à fusibles suivant la revendication 1,
    caractérisé en ce que les extrémités des barres ( 36 ) sont reliées entre elles par une âme ( 38 ) ou par une plaquette ( 38' ).
  4. Disjoncteur-sectionneur à fusibles suivant l'une des revendications précédentes,
    caractérisé en ce que l'arbre ( 32 , 32' ) est soumis à l'action de la force d'un ressort de manière à, sous l'action du ressort, faire passer l'élément ( 34 , 34' ) de blocage de la position de réception à la position de blocage.
  5. Disjoncteur-sectionneur à fusibles suivant la revendication 4, caractérisé en ce que
    pour chaque fusible ( 48 ) est ménagé dans le couvercle ( 20 ) une fente ( 26 ) sur laquelle la tête de marteau ( 14 ) peut être insérée, l'arbre ( 32 ) ayant l'élément ( 34 ) de blocage étant disposé par rapport à la fente ( 26 ) de manière à ce que, lors de l'insertion, une tête de marteau ( 14 ) pousse l'élément ( 34 ) de blocage à l'encontre de la force du ressort dans la position de réception.
  6. Disjoncteur-sectionneur à fusibles suivant la revendications 4 ou 5, caractérisé en ce que la force du ressort est donnée par un élément ( 40 , 40' ) qui est adjoint à l'arbre et qui est appuyé dans le couvercle ( 20 ).
  7. Disjoncteur-sectionneur à fusibles suivant l'une des revendications 4 à 6, caractérisé en ce que sur l'arbre est monté un élément ( 42 ) d'actionnement qui à l'état ouvert est accessible à l'intérieur du couvercle et à l'aide duquel l'arbre peut, à l'encontre de l'effet de la force du ressort, être tourné à la main.
  8. Disjoncteur-sectionneur à fusibles suivant l'une des revendications précédentes, dans lequel le couvercle ( 20 ) est conçu ( 28 ) pour la réception de trois fusibles ( 48 ) caractérisé en ce que
    il y a dans le couvercle un arbre ( 32 ) unique sur lequel un élément ( 34 ) de blocage pour chaque fusible ( 48 ) est monté.
  9. Disjoncteur-sectionneur à fusibles suivant l'une des revendications 1 à 7, dans lequel le couvercle ( 20' ) est conçu pour la réception de trois fusibles ( 48 ), caractérisé en ce que il y a dans le couvercle ( 20' ) pour chaque fusible un arbre ( 32 ) propre ayant une unité ( 34 ) de blocage qui y est montée.
  10. Dispositif ( 30, 30', 50 ) de verrouillage à utiliser dans un disjoncteur-sectionneur à fusibles, comprenant un arbre ( 32, 32' ) et monté sur l'arbre un élément ( 34, 34' ) de blocage d'une tête de marteau ( 14 ) d'un fusible ( 48 ),
    caractérisé en ce que l'élément ( 34 ) de blocage comprend pour chaque fusible deux barres ( 36 ) qui partent perpendiculairement de l'arbre ( 32 ), dont l'écartement est plus grand que la largeur d'une tête de marteau ( 14 ) d'un fusible ( 48 ), qui, pour le verrouillage, peuvent pivoter autour de la tête de marteau et qui portent des pièces de verrouillage à leurs extrémités.
  11. Dispositif ( 30 , 30' , 50 ) de verrouillage suivant la revendication 10, dans lequel chaque élément ( 34 , 34' ) de blocage comprend deux barres ( 36 , 36' ) partant perpendiculairement de l'arbre ( 32 , 32' ).
  12. Dispositif ( 30' ) de verrouillage suivant la revendication 11, dans lequel à l'extrémité de chaque barre est disposée une pièce ( 46 ) de blocage, les pièces ( 46 ) de blocage de deux barres ( 36 ) étant tournées l'une vers l'autre.
  13. Dispositif ( 30 , 50 ) de verrouillage suivant la revendication 11, les extrémités des barres ( 36 , 36' ) sont reliées entre elles par une âme ( 38 ) ou par une plaquette ( 38' ).
  14. Dispositif ( 30 , 30' , 50 ) de verrouillage suivant l'une des revendications 10 à 13, dans lequel un élément ( 40 , 40' ) de ressort est monté sur l'arbre.
  15. Dispositif ( 30 , 30' , 50 ) de verrouillage dans lequel l'élément de ressort est une barre ( 40' ) ou un étrier ( 40 ) de ressort adjoint.
  16. Dispositif ( 30 , 30' , 50 ) de verrouillage suivant l'une des revendications 10 à 15, dans lequel au moins un levier ( 42 ) d'actionnement est monté sur l'arbre.
  17. Dispositif ( 30 , 30' ) de verrouillage suivant l'une des revendications 10 à 16, ayant trois éléments ( 34 ) de blocage pour des têtes de marteau ( 14 ) de fusibles ( 48 ).
  18. Dispositif ( 30 , 30' , 50 ) de verrouillage suivant l'une des revendications 10 à 17, qui est fabriqué d'une seule pièce en une matière plastique.
EP20070118567 2006-10-17 2007-10-16 Disjoncteur-sectionneur à fusibles et dispositif de verrouillage pour un disjoncteur-sectionneur à fusibles Active EP1914780B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610049812 DE102006049812A1 (de) 2006-10-17 2006-10-17 Sicherungslasttrennschalter und Verriegelungseinrichtung für einen Sicherungslasttrennschalter

Publications (3)

Publication Number Publication Date
EP1914780A2 EP1914780A2 (fr) 2008-04-23
EP1914780A3 EP1914780A3 (fr) 2009-01-07
EP1914780B1 true EP1914780B1 (fr) 2014-08-06

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EP20070118567 Active EP1914780B1 (fr) 2006-10-17 2007-10-16 Disjoncteur-sectionneur à fusibles et dispositif de verrouillage pour un disjoncteur-sectionneur à fusibles

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EP (1) EP1914780B1 (fr)
DE (1) DE102006049812A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024199589A1 (fr) * 2023-03-31 2024-10-03 Efen Gmbh Couvercle d'interrupteur et interrupteur-sectionneur a fusible de type bande
WO2024199588A1 (fr) * 2023-03-31 2024-10-03 Efen Gmbh Sectionneur de fusible de type bande, en particulier sectionneur de fusible nh de type bande

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005316B (zh) * 2009-08-31 2013-11-06 西门子公司 开关的安全联锁装置
EP2790201B1 (fr) * 2013-04-12 2016-03-02 Jean Müller GmbH Elektrotechnische Fabrik Couvercle d'appareil d'un dispositif de commutation de sécurité haute puissance basse tension
EP2860746B1 (fr) 2013-10-10 2017-02-22 Jean Müller GmbH Elektrotechnische Fabrik Agencement de deux couvercles de sectionneurs

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1010909A (en) * 1961-07-31 1965-11-24 Adele Oellrich Mining and conveying equipment for short wall working, especially in coal mines, and method of mining
DE2243945C3 (de) * 1972-09-07 1985-08-01 H.J. Müller GmbH & Co Verwaltungs-KG, 6228 Eltville Als Isolierstoff-Schwenkplatte mit Griffansatz ausgebildete, an einem NH-Sicherungsunterteil angebrachte Einrichtung für die Handhabung oder lösbare Anbringung eines oder mehrerer NH-Sicherungseinsätze
DE7808071U1 (de) * 1978-03-17 1978-06-29 Neu, Leopold, 7980 Ravensburg Zweiteiliger Aufsteckgriff für NH-Sicherungspatronen
DE19615444A1 (de) * 1996-04-19 1997-10-23 Efen Elektrotech Fab Verriegelungseinrichtung für Sicherungseinsätze in einem Trennschalter
DE29721452U1 (de) * 1997-12-04 1998-04-30 Wöhner GmbH & Co. KG Elektrotechnische Systeme, 96472 Rödental Deckel, insbesondere für NH-Sicherungslasttrennschalter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024199589A1 (fr) * 2023-03-31 2024-10-03 Efen Gmbh Couvercle d'interrupteur et interrupteur-sectionneur a fusible de type bande
WO2024199588A1 (fr) * 2023-03-31 2024-10-03 Efen Gmbh Sectionneur de fusible de type bande, en particulier sectionneur de fusible nh de type bande

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Publication number Publication date
EP1914780A2 (fr) 2008-04-23
EP1914780A3 (fr) 2009-01-07
DE102006049812A1 (de) 2008-04-24

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