EP0389029B1 - Dispositif pour la préhension et support pour la manipulation d'un fusible tubulaire - Google Patents

Dispositif pour la préhension et support pour la manipulation d'un fusible tubulaire Download PDF

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Publication number
EP0389029B1
EP0389029B1 EP90200557A EP90200557A EP0389029B1 EP 0389029 B1 EP0389029 B1 EP 0389029B1 EP 90200557 A EP90200557 A EP 90200557A EP 90200557 A EP90200557 A EP 90200557A EP 0389029 B1 EP0389029 B1 EP 0389029B1
Authority
EP
European Patent Office
Prior art keywords
gripping device
sleeve
terminal electrode
tubular fuse
mouth
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
Application number
EP90200557A
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German (de)
English (en)
Other versions
EP0389029A1 (fr
Inventor
Aloysius Gerardus Majella Hemmer
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.)
Danfoss Power Solutions II BV
Original Assignee
Holec Systemen en Componenten BV
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Filing date
Publication date
Application filed by Holec Systemen en Componenten BV filed Critical Holec Systemen en Componenten BV
Publication of EP0389029A1 publication Critical patent/EP0389029A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • 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
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/102—Fuses mounted on or constituting the movable contact parts of the switch

Definitions

  • the invention relates to a gripping device for handling a tubular fuse having terminal electrodes situated at the ends, according to the preamble of claim 1.
  • blow-out fuses are used in practice to protect electrical medium-voltage and high-voltage installations against short-circuit currents and overload currents.
  • Said blow-out fuses are constructed of a closed hollow tube of electrically insulating material, generally porcelain, in which one or more electrically conducting fusible wires or fusible strips are accommodated, if necessary, surrounded by quenching agent for extinguishing a discharge arc if the blow-out fuse comes into operation.
  • cylindrical terminal electrodes which are connected to the fusible wires or fusible strips, respectively.
  • open tubular fuses in which the hollow tube is open at the ends.
  • fork-type contacts are generally used in practice for connecting the terminal electrodes.
  • Said forked contacts should have, inter alia, a sufficiently high clamping force to achieve a reliable electrical connection with a desirable low contact resistance. This means, however, that a relatively high force has to be exerted in the direction transverse to the tube when fitting the tubular fuse in order to open the forked contacts. The tubular fuse is then brought forcibly to its final position under the influence of the spring action of the forked contacts.
  • Said forked contacts have the disadvantage that, when fitting and removing the tubular fuse, forces are exerted thereon in the radial direction. It is precisely this radial force action to which the tubular fuse is relatively sensitive from the point of view of breakage, crack formation and the like in the tube and in the connection of the fusible wires or fusible strips to the terminal electrodes. The fact that this manner of fitting is nevertheless used quite a lot in practice is due to the ability of the porcelain tube to be used as a handle for handling the tubular fuse during the operation.
  • a mechanically more beneficial fitting is that in which so-called tulip contacts are used for making contact to the terminal electrodes of the tubular fuse.
  • the tubular fuse is connected by exerting a force in the axial direction instead of a force in the radial direction.
  • the tubular fuse is in fact able to absorb relatively high forces in this direction without the risk of breakage, crack formation and the like.
  • tubular fuse can easily be introduced into a closed sleeve-type holder of electrically insulating material to provide a voltage-tight structure as a protection against splashed water, contamination and the like, to provide optimum insulation of the tubular fuse with respect to its environment and to achieve a suitable electrical field control and potential distribution.
  • a problem arises in this connection with regard to handling the tubular fuse since its porcelain tube is no longer accessible as a handle.
  • DE-U-1.859.269 discloses a gripping device according to the preamble of claim 1.
  • This device comprises a cap with a mouth, in which are arranged clamping contacts, extending in the radial direction for contacting a first terminal electrode of a tubular blow-out fuse.
  • Those clamping contacts exert on the first terminal electrode a clamping force in the radial direction, which force is greater than the clamping force exerted on the second terminal electrode arranged in a fuse holder, such that the tubular fuse can be removed from the fuse holder by means of the cap.
  • the object of this invention is to provide an improved gripping device of the aforementioned type, in which the coupling between the gripping device and the tubular fuse can easily and quickly be uncoupled without the necessity for separate means.
  • the device comprises displaceable influencing means acting on the clamping element, which is movable in at least the radial outward direction by displacing the influencing means, whereby the frictional force reduces such that the coupling to a terminal electrode received in the cavity can be uncoupled with manual force.
  • tubular fuses can easily be fitted and removed with the gripping device according to the invention even at positions with difficult access, for example in compact installation boxes.
  • a relatively complicated cradle construction in which the tubular fuse is fitted in a cradle structure capable of being moved outwards from an installation box is used for this purpose in order to make replacement of the tubular fuse possible.
  • the gripping device provides, in addition to the relatively easy handling of a tubular fuse therewith, also a greater dimensioning freedom for designers of, for example, electrical installation boxes, because the position of the tubular fuses is less governed by the requirements of accessibility for the fitting and removal thereof. This may per se result in more compact installations occupying less space, and this is of importance, inter alia, in connection with the generally restricted housing of electrical distribution stations, transformer houses etc.
  • an embodiment of the gripping device according to the invention which is suitable for this purpose has the characteristic that the clamping element comprises a curved annular element of resilient material, the central opening of which forms the boundary of a receiving opening for receiving a terminal electrode of the tubular fuse, which annular element is supported in the cavity so as to be displaceable by the influencing means at least in the radial direction in order to vary the receiving opening.
  • a preferred embodiment of the invention has the characteristic that the annular element has an ellipsoidal projection and is curved in a V-shape around the short axis thereof, two slits situated opposite each other and extending at an angle in the axial direction being situated in the wall of the cavity, in which slits the annular element is received so as to be movably supported both in the axial and in the radial direction at its circumference in a manner such that a virtually circular receiving opening is bounded, a further sleeve being mounted over the mouth and having an edge which extends inwards from the circumference and which forms a stop for the annular element, which further sleeve is latched so as to be slideable in the axial direction over the mouth.
  • the result is achieved that by bending it around the short axis thereof a receiving opening having a virtually circular section and consequently a uniform action on the circular-cylindrical terminal electrode concerned are obtained.
  • the slits are positioned in a manner such that the annular element undergoes a bending to the extent that the receiving opening bounded by it is smaller than the diameter of the terminal electrode.
  • the gripping device On coupling the gripping device with the tubular fuse, the annular element is displaced further into the slits as a consequence of said smaller receiving opening, as a result of which the receiving opening is enlarged and the terminal electrode can be inserted into it.
  • the slits are positioned in a manner such that the annular element always tends to assume the position associated with the original, smaller receiving opening under the influence of its own spring force.
  • a very easy manner of uncoupling the gripping device is achieved as a preferred embodiment in a manner such that the stop of the further sleeve is situated near the mouth and the annular element is received in the cavity in a manner such that the curve thereof is up against the stop of the further sleeve.
  • the further sleeve latched over the mouth thus prevents the annular element emerging to the outside from the cavity.
  • the annular element can be displaced in the slits and the receiving opening can easily be widened with manual force to reduce the frictional force exerted.
  • axial contacting has a relative disadvantage in the sense that an electrode connection should always be of a detachable construction, for example in the form of a terminal cap which is connected to the rest of the electrical installation via a screw joint, litz wire or in another detachable manner.
  • the gripping device After the tubular fuse has been fitted, the gripping device has to be removed after which the terminal cap can be mounted. In removing or "pulling" a tubular fuse, the reverse process has to be followed. In a three-phase electrical installation, three tubular fuses should always be fitted or, if necessary, removed in this manner for each installation section protected.
  • the invention is therefore further based on the idea that the fitting or removing of a tubular fuse can proceed more rapidly by incorporating the gripping device itself in the electrical circuit of the tubular fuse concerned.
  • this is achieved in a manner such that the cavity is formed by a sleeve-type body of electrically conducting material, an open end of which forms the mouth for receiving a terminal electrode of the tubular fuse, which sleeve-type body is designed to make electrical contact with the terminal electrode of the tubular fuse to be received therein, and an electrical conductor connected to the sleeve-type body and projecting outwards.
  • an electrical connection of the gripping device to the terminal electrodes of a tubular fuse is now also provided.
  • a further embodiment of the invention has the characteristic that the free end of the conductor extends laterally from the sleeve-type body in the direction of the mouth for the purpose of detachably electrically coupling the conductor.
  • a gripping device constructed in this manner offers the advantage that the gripping device can be coupled to, or uncoupled from, the terminal electrode concerned in one movement operation.
  • the free end of the conductor is constructed for the coupling thereof as a plug connection.
  • a tubular fuse If a tubular fuse has functioned, the current circuit protected thereby has become dead. In many cases, however, its terminal electrode situated on the supply side is still live. In the case of medium-voltage and high-voltage installations, the other terminal electrode of the tubular fuse then usually also carries a voltage which it is dangerous to touch.
  • the supply side For the purpose of removing the tubular fuse in the case of a tubular fuse axially connected in the usual manner with a terminal cap, the supply side should therefore first be rendered dead and then the two terminal electrodes of the tubular fuse have to be earthed in order to allow any residual charges to drain to earth. The terminal cap can then be removed, after which the tubular fuse concerned can be removed from its holder.
  • the shaft of the gripping device could be constructed, for example, as an elongated insulated rod, this is less efficient because depending on the requirements and safety regulations imposed, the length of the rod may, for example, be approximately 1.5 m for a voltage of 24 kV.
  • Such length is not only unmanageable as regards space but also has a mechanical disadvantage in the sense that, as a consequence of the relatively large length of the shaft, a proportionately large moment of force can be exerted on the appropriate terminal electrode of the tubular fuse, with the risk of damage thereto.
  • yet another embodiment of the gripping device has the characteristic that the shaft comprises an elongated body of electrically insulating material whose end adjacent to the sleeve-type body is provided with a thickened section to achieve a suitable electric field control and to reduce the electric potential in the direction of the elongated body, an electrically conducting screen to be connected to earth being mounted at the free end of the elongated body.
  • the contact safety can further be increased by arranging for the free end of the elongated body to be adjoined by a plate extending in the radial direction, a plate-type electrically conducting screen being mounted with a handle for handling the gripping device at the side facing away from said end.
  • connection of the screening plate to earth can be achieved in various manners
  • at least one passage opening is provided in the plate for a contact pin to be connected to earth.
  • a terminal electrode thereof is provided with a so-called tell-tale pin or striker pin which shoots outwards from the terminal electrode concerned if the fusible wires or the fusible strips have blown.
  • yet another embodiment of the invention has the characteristic that the end of the sleeve-type body facing away from the mouth, and the shaft are provided with a passage opening for an actuating element on which the tell-tale pin mounted in a terminal electrode of the tubular fuse concerned is able to act.
  • the movement of the tell-tale pin concerned is transmitted to the end of the shaft via the actuating element.
  • the gripping device according to the invention based thereon, use is made thereof in that there is mounted at the end of the shaft facing away from the sleeve-type body an indicating mechanism which can be activated by means of the actuating element to indicate that a tubular fuse coupled to the gripping device has functioned.
  • the indicating mechanism comprises a lever mechanism attached to the screening plate and having a first and a second position, the actuating element being a trapped pin which can be moved in the passage opening.
  • the said lever mechanism may form part of a larger mechanical system for controlling a plurality of coupled tubular fuses, such as, for example, in an electrical three-phase installation and/or interaction with the control mechanism of one or more switches.
  • a further embodiment of the invention has the characteristic that, to make electrical contact to a particular terminal electrode of the tubular fuse, contact elements which are mutually displaced in the tangential direction are situated along the inside circumference of the sleeve-type body.
  • the contact elements viewed from the mouth, are arranged in front of the clamping element. This latter is specifically of importance because the electrical connection to the terminal electrode is then always made at a section thereof on which the clamping element does not have to act. Any damage to the terminal electrode as a consequence of the frictional action of the clamping element then has no effect on the electrical connection to the terminal electrode concerned.
  • terminal electrodes of commercially available tubular fuses have a specified diameter and length on which both the contact elements and the clamping element have therefore preferably to act separately from one another, it is possible to use compact contact elements occupying little space for making axial contact to a particular terminal electrode.
  • an embodiment of the invention has the characteristic that the contact elements are constructed from a loop-shaped strip of resilient electrically conducting material with backwardly bent ends, the sleeve-type body being provided, near the mouth, with tooth-type projections on which the contact elements act with their backwardly bent ends.
  • each contact element acts at two points on the terminal electrode and at two points on the sleeve-type body of the gripping device.
  • the width of the loop-shaped strip can remain limited, as intended, as a result of this multiple contacting for each contact element.
  • an embodiment of the invention has the characteristic that the contact elements are provided, near the backwardly bent ends, with guide strips pointing in the direction of the mouth for guiding a terminal electrode of the tubular fuse to be received in the sleeve-type body in the axial direction of the latter.
  • Desired compact dimensions of both the gripping device and the holder can be obtained by manufacturing them of casting resin.
  • FIG. 1a and 1b diagrammatically show respectively a longitudinal section and an elevation of a part of the gripping device according to the invention
  • Figure 1a shows a longitudinal section through the preferred embodiment of the gripping device 1 according to the invention, which in addition to handling a tubular fuse, can also be used for connecting it electrically.
  • the clamping element and the contact elements are not shown.
  • the gripping device 1 essentially comprises an elongated shaft 2 of insulating material which is adjoined at one end by a thickened section 3 which is adjacent to one end of a sleeve 4 of electrically conducting material.
  • the other end of the sleeve 4 forms the mouth 5 for receiving a terminal electrode of a tubular fuse.
  • Connected to the sleeve 4 is furthermore a conductor 6 which projects outwards and has a pin-type end 7 projecting beyond the mouth 5.
  • the conductor 6 is surrounded by an insulation sheath 8 adjacent to the thickened section 3.
  • the other end of the shaft 2 is adjoined by a flat plate 9 of insulating material extending in the radial direction and a screening plate 10, connected thereto, of electrically conducting material.
  • the screening plate 10 is provided on either side with triangular upright walls 11 which are joined to each other by means of a spindle 12.
  • the spindle 12 also serves as a shaft for handling the gripping device.
  • the flat plate 9 is provided with openings 13 for receiving therein a pin which is connected to earth (not shown).
  • a passage opening 14 extends into the shaft 2 from the sleeve 4 to the screening plate 10. After the tubular fuse has functioned, a tell-tale pin or striker pin received in a terminal electrode of the tubular fuse is able to move in said passage opening or activate an actuating element (not shown) mounted therein.
  • Figure 1b shows the elevation of the gripping device seen from the spindle 12 in Figure 1a.
  • the gripping device shown in Figure 1a is approximately 30 cm long and the plate 9 is approximately 12 cm wide and 15 cm high. With these dimensions, the gripping device is eminently suitable for use in compact installation boxes and the like.
  • Figure 2a shows a longitudinal section through the sleeve 4 of electrically conducting material. Near the mouth 5, four teeth 15 are formed in the wall of the sleeve for attaching thereto the contact elements for making electrical contact with a terminal electrode of a tubular fuse to be received in the mouth 5.
  • slits 16, 17 which are situated opposite each other and extend at an angle in the axial direction for supporting a clamping element in the sleeve 4, as will be discussed later in more detail.
  • An opening 18 provided with a screw thread is furthermore provided in the wall of the sleeve.
  • Figure 2b shows an elevation of the sleeve 4 viewed from the slit 16.
  • the opening 19 in the wall of the sleeve 4 serves to connect to the latter the conductor 6, as shown in Figure 1a.
  • the conductor 6 can be attached to the sleeve by soldering as a result of manufacturing the sleeve from solderable material.
  • FIG 3a shows a plan view of a preferred embodiment of a contact element 20 for use in the gripping device according to the invention.
  • the contact element 20 is constructed from a loop-shaped strip 21 made of resilient, electrically conducting material, for example an alloy of beryllium and copper, having backwardly bent ends 22 which, in the fitted state, act on a tooth 15 of the sleeve 4 as shown in Figures 2a and 2b.
  • the contact element is provided with guide strips 23 which point inwards and which have an end 24 perpendicular to the plane of the drawing, all this being clearly visible from the elevation in the direction of the bent-over ends 22 shown in Figure 3b.
  • Figures 4a and 4b show the contact element 20 according to Figure 3 in the loaded state.
  • the terminal electrode 25, partially shown in Figure 4a, of a tubular fuse has a smaller diameter than the terminal electrode 25′ shown in Figure 4b.
  • four contact junctions A, B, C, D or A′, B′, C′, D′ respectively are formed between the wall of the partially shown sleeve 4 and the terminal electrode 25, 25′.
  • a reliable electrical connection having a desirable low contact resistance to a terminal electrode can be brought about by accommodating two or more such contact elements in the sleeve 4.
  • the contact surface of the contact element is provided for this purpose with a coating of silver.
  • FIGs 5a, 5b and 5c show the preferred embodiment of a clamping element for use in the gripping device according to the invention.
  • the clamping element comprises an annular element 26 having an ellipsoidal projection and is bent into a in-shape around the short axis for reception in the gripping device, as shown in Figure 5b.
  • the annular element 26 formed in this manner is introduced into the slits 16 of the sleeve 4 starting from its edge 27, see Figure 2.
  • the annular element 26 undergoes a bending such that it assumes a shape shown in section in Figure 5c, depending on the diameter of the terminal electrode of the tubular fuse concerned.
  • the receiving opening bound by the annular element 26 is virtually circular as a consequence of its ellipsoidal form so that the inside edge 28 thereof acts on the terminal electrode virtually along the entire outside circumference thereof.
  • the annular element 26 is prestressed in a manner such that it always tends to assume the shape shown in Figure 5b under the influence of its spring force, in which shape the receiving opening bounded thereby is relatively smaller than the diameter of the terminal electrode of a tubular fuse.
  • the receiving opening can be increased, against the spring force of the element, by exercising a force, in the axial direction on the annular element, from the curve thereof, with which force the frictional force exercised on the terminal electrode is decreased and the coupling to the gripping device can easily be released by hand.
  • a further sleeve 29 is provided which is to be mounted over the mouth 5 of the sleeve 4 and which has an edge 30 which is turned inwards and which is situated opposite the mouth 5 in the fitted state.
  • a slit-type opening 31 is provided in the wall of the further sleeve 28 in the wall of the further sleeve 28 which corresponds to the opening 18 of the sleeve 4, see Figure 2.
  • constructions are also conceivable in which, for example, the further sleeve 29 can be displaced by means of a mechanism acting thereon from the handle 12 of the gripping device.
  • constructions which act via the passage opening 14 of the gripping device on the clamping element are also possible for influencing the frictional force exerted thereby on a terminal electrode (not shown).
  • Figure 7 shows diagrammatically, partially in section and in elevation, the assembled gripping device 1 according to the invention combined with a tubular fuse 32 having terminal electrodes 25, 33 and a holder 34.
  • the holder 34 has a closed end 35 at which a tulip-shaped receiving contact 36 is mounted for making axial contact with the terminal electrode 33 of the tubular fuse 32.
  • the receiving contact 36 is fed to the outside as a bus contact 38 via a conductor 37 for the purpose of further connection with an electrical installation.
  • the gripping device 1 acts on the terminal electrode 25 of the tubular fuse 32 and is coupled via the contact elements 20, the sleeve 4, the conductor 6 connected thereto and the pin-type end 7 thereof to a bus contact 39 which projects laterally from the holder and which is in turn again connected to a further bus contact 40 to receive the tubular fuse in an electrical installation.
  • a bus contact 39 which projects laterally from the holder and which is in turn again connected to a further bus contact 40 to receive the tubular fuse in an electrical installation.
  • other connections such as rails, screw couplings etc. can also be used, instead of the bus contacts 38, 40, for receiving the holder 34 or the tubular fuse 32 in an electrical installation.
  • Contact can also be made to the conductor 6 of the gripping device 1 in detachable manners known per se, the plug connection shown, however, being preferable.
  • the plate 9 situated at the end of the shaft 2 of the gripping device 1 is dimensioned in a manner such that the holder 34 is completely sealed at its openend in order to prevent the penetration of dirt and the like and also to achieve a suitable field control and contact safety.
  • the electrical screen 10, 11 attached to the plate 9 of the shaft 2 is earthed via spring pins 41 which extend into the openings 13 of the plate 9.
  • a tilting mechanism 42 Mounted between the plate 10 of the electrically conducting screen and the plate 9 is a tilting mechanism 42, the one end 43 of which interacts with an end of a pin 47 which is trapped so as to slide in the longitudinal direction in the passage opening 14 of the gripping device 1 by means of a disc 45 joined thereto and stops 46 and whose other end is situated opposite the terminal electrode 25 of the tubular fuse 32 from which a tell-tale pin or striker pin emerges outwards to indicate the tubular fuse 32 has functioned.

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  • Fuses (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Claims (18)

  1. Dispositif pour la préhension (1) destiné à porter un fusible tubulaire (32) ayant des électrodes de connexion (25, 33) situées aux extrémités, dispositif comprenant un axe (2) ayant une cavité cylindrique et fourni avec une bouche (5) destinée à recevoir une électrode de connexion (25, 33) du fusible tubulaire (32), un élément de serrage (20, 26) pouvant être déplacé dans au moins la direction radiale et étant logé dans la cavité pour exercer une force de frottement sur l'électrode de connexion (25, 33) concernée afin de coupler le fusible tubulaire (32) au dispositif pour la préhension (1), caractérisé en ce que le dispositif comprend un moyen d'influence (29) pouvant être déplacé agissant sur l'élément de serrage (20, 26) qui est mobile dans au moins la direction extérieure radiale en déplaçant le moyen d'influence (29), par lequel la force de frottememt diminue de manière à ce que le couplage à une électrode de connexion (25, 33) reçue dans la cavité peut être découplé par la force manuelle.
  2. Dispositif pour la préhension (1) selon la revendication 1, caractérisé en ce que l'élément de serrage (26) comprend un élément annulaire incurvé (26) en matériau résilient dont l'ouverture centrale forme la limite d'une ouverture réceptrice destinée à recevoir une électrode de connexion (25, 33) du fusible tubulaire (32), l'élément annulaire (26) étant porté dans la cavité de manière à pouvoir être déplacé par le moyen d'influence au moins dans la direction radiale afin de modifier l'ouverture réceptrice.
  3. Dispositif pour la préhension (1) selon la revendication 2, caractérisé en ce que l'élément annulaire (26) a une saillie ellipsoïdale et est incurvé en forme de V autour de l'axe court de celle-ci, deux fentes (16, 17) situées à l'opposé l'une de l'autre et s'étendant en formant un angle dans la direction axiale, étant situées dans la paroi de la cavité, cavités (16, 17) dans lesquelles l'élément annulaire (26) est prévu de manière à être porté de façon mobile à la fois dans la direction axiale et la direction radiale à sa circonférence, de telle manière qu'une ouverture réceptrice virtuellement circulaire est attachée, un manchon supplémentaire (29) étant monté sur la bouche (5) et ayant un bord (30) qui s'étend vers l'intérieur depuis la circonférence et qui forme une butée pour l'élément annulaire (26), le manchon supplémentaire (29) étant verrouillé de manière à coulisser dans la direction axiale sur la bouche (5).
  4. Dispositif pour la préhension (1) selon la revendication 3, caractérisé en ce que la butée (30) du manchon supplémentaire (29) est située près de la bouche (5) et l'élément annulaire (26) est reçu dans la cavité de telle manière que la courbe de celui-ci se situe en haut contre la butée (30) du manchon supplémentaire (29).
  5. Dispositif pour la préhension selon une ou plusieurs des revendications précédentes, caractérisé en ce que la cavité est formée par un boîtier de type manchon (4) en matériau électriquement conducteur dont une extrémité ouverte (5) forme la bouche (5) pour recevoir une électrode de connexion (25, 33) du fusible tubulaire (32), le boîtier de type manchon (4) étant conçu pour établir un contact avec l'électrode de connexion (25, 33) du fusible tubulaire (32) à recevoir à l'intérieur de celui-ci, et un conducteur électrique (6) étant connecté audit boîtier de type manchon (4) et faisant saillie vers l'extérieur.
  6. Dispositif pour la préhension (1) selon la revendication 5, caractérisé en ce que l'extrémité libre (7) du conducteur (6) s'étend latéralement depuis ledit boîtier formant manchon (4) dans la direction de la bouche (5) dans le but de coupler électriquement le conducteur (6) de manière amovible.
  7. Dispositif pour la préhension (1) selon la revendication 6, caractérisé en ce que l'extrémité libre (7) du conducteur (6) est construite pour le couplage de celui-ci comme raccordement à fiches.
  8. Dispositif pour la préhension (1) selon une ou plusieurs des revendications 5 à 7 inclusivement, caractérisé en ce que l'axe (2) comprend un élément allongé (2) en matériau électriquement isolant dont l'extrémité adjacente au boîtier de type manchon (4) est fourni avec une section épaissie (3) pour réaliser un contrôle de champ électrique approprié et pour réduire le potentiel électrique dans la direction de l'élément allongé (2), un écran (10, 11) électriquement conducteur à connecter à la masse étant monté sur l'extrémité libre de l'élément allongé (2).
  9. Dispositif pour la préhension (1) selon la revendication 8, caractérisé en ce que l'extrémité libre de l'élément allongé (2) est attenante à une plaque (9) s'étendant dans la direction radiale, un écran (10, 11) électriquement conducteur de type plaque étant monté avec une poignée (12) pour manipuler le dispositif pour la préhension (1) sur le côté s'éloignant de face de ladite extrémité.
  10. Dispositif pour la préhension (1) selon la revendication 9, caractérisé en ce qu'au moins une ouverture de canal (13) est prévue dans la plaque (9) pour une broche de contact (41) destinée à relier l'écran (10, 11) à la masse.
  11. Dispositif pour la préhension (1) selon une ou plusieurs des revendications 5 à 10 inclusivement, caractérisé en ce que l'extrémité du boîtier de type manchon (4) s'éloignant de face de la bouche (5), et l'axe (2) sont prévus avec une ouverture de canal (14) pour un élément d'actionnement (47) sur lequel la broche de contrôle dans une électrode de connexion (25, 33) du fusible tubulaire (32) concerné est capable d'agir.
  12. Dispositif pour la préhension (1) selon la revendication 11, caractérisé en ce qu'un mécanisme indicateur (42) qui peut être activé au moyen de l'élément d'activation (47) pour indiquer qu'un fusible tubulaire (32) couplé au dispositif pour la préhension (1) a fonctionné, est monté à l'extrémité de l'axe (2) s'éloignant de face du boîtier de type manchon (4).
  13. Dispositif pour la préhension (1) selon la revendication 12, caractérisé en ce que le mécanisme indicateur (42) est un mécanisme de levier relié à la plaque d'écran (10) et ayant une première position et une deuxième position, l'élément activateur (47) étant une broche bloquée qui peut être déplacée dans l'ouverture de canal (14).
  14. Dispositif pour la préhension (1) selon une ou plusieurs des revendications 5 à 13 inclusivement, caractérisé en ce que, pour établir un contact électrique avec une électrode de connexion particulière (25, 33) du fusible tubulaire (32), des éléments de contact (20) qui sont mutuellement déplacés dans la direction tangentielle sont situés le long de la circonférence intérieure du boîtier de type manchon (4).
  15. Dispositif pour la préhension (1) selon la revendication 14, caractérisé en ce que les éléments de contact (20), vus de la bouche (5), sont agencés devant l'élément de serrage (26).
  16. Dispositif pour la préhension (1) selon la revendication 14 ou la revendication 15, caractérisé en ce que les éléments de contact (20) sont construits à partir d'une bande en forme de boucle (21) en matériau électriquement conducteur résilient avec des extrémités (22) recourbées vers l'arrière, le boîtier de type manchon (4) étant fourni, près de la bouche (5), avec des saillies de type dentures (15) sur lesquelles les éléments de contact (20) agissent avec leurs extrémités (22) recourbées vers l'arrière.
  17. Dispositif pour la préhension (1) selon la revendication 16, caractérisé en ce que les éléments de contact (20) sont fournis, près des extrémités (22) recourbées vers l'arrière, avec des bandes de guidage (23) pointant en direction de la bouche (5) pour guider une électrode de connexion (25, 33) du fusible tubulaire (32) à recevoir dans le boîtier de type manchon (4) dans la direction axiale de ce dernier.
  18. Dispositif pour la préhension (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'axe (2) est fabriqué à partir de résine coulée.
EP90200557A 1989-03-22 1990-03-08 Dispositif pour la préhension et support pour la manipulation d'un fusible tubulaire Expired - Lifetime EP0389029B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8900711 1989-03-22
NL8900711A NL8900711A (nl) 1989-03-22 1989-03-22 Grijpinrichting voor het hanteren van een buisveiligheid.

Publications (2)

Publication Number Publication Date
EP0389029A1 EP0389029A1 (fr) 1990-09-26
EP0389029B1 true EP0389029B1 (fr) 1995-07-12

Family

ID=19854342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90200557A Expired - Lifetime EP0389029B1 (fr) 1989-03-22 1990-03-08 Dispositif pour la préhension et support pour la manipulation d'un fusible tubulaire

Country Status (10)

Country Link
EP (1) EP0389029B1 (fr)
AT (1) ATE125063T1 (fr)
AU (1) AU618457B2 (fr)
DE (1) DE69020763T2 (fr)
DK (1) DK0389029T3 (fr)
ES (1) ES2073504T3 (fr)
GR (1) GR3017530T3 (fr)
IE (1) IE67789B1 (fr)
NL (1) NL8900711A (fr)
NZ (1) NZ233017A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005009235A1 (de) 2005-02-25 2006-08-31 Abb Technology Ag Sicherheitsanordnung für eine Schaltanlage, insbesondere für eine Mittelspannungsschaltanlage
CN112825294B (zh) * 2019-11-21 2022-11-29 河南森源电气股份有限公司 熔断器的脱扣机构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1053560A (fr) * 1900-01-01
DE1040669B (de) * 1957-07-31 1958-10-09 Elek Zitaets Actien Ges Vorm W Hochspannungs-Sicherungstrenner mit isolierendem Einsatzrohr zum axialen Einschieben der Sicherungspatrone
DE1859269U (de) * 1961-10-25 1962-10-04 Fabriek Van Electrische App N Vorrichtung zum elektrischen anschluss von schmelzsicherungen.
IT984470B (it) * 1972-04-21 1974-11-20 Krone Gmbh Portafusibili per apparecchi ad alta tensione ad inserzione unipola re isolati con resina colata

Also Published As

Publication number Publication date
DK0389029T3 (da) 1995-08-28
IE67789B1 (en) 1996-04-17
DE69020763D1 (de) 1995-08-17
EP0389029A1 (fr) 1990-09-26
NZ233017A (en) 1993-01-27
IE901046L (en) 1990-09-22
DE69020763T2 (de) 1995-12-07
AU618457B2 (en) 1991-12-19
AU5205890A (en) 1990-09-27
NL8900711A (nl) 1990-10-16
GR3017530T3 (en) 1995-12-31
ATE125063T1 (de) 1995-07-15
ES2073504T3 (es) 1995-08-16

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