EP0890971B1 - Couvercle pour contacts de fusibles dans les dispositifs à fusibles du type basse tension haute puissance - Google Patents

Couvercle pour contacts de fusibles dans les dispositifs à fusibles du type basse tension haute puissance Download PDF

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Publication number
EP0890971B1
EP0890971B1 EP98104866A EP98104866A EP0890971B1 EP 0890971 B1 EP0890971 B1 EP 0890971B1 EP 98104866 A EP98104866 A EP 98104866A EP 98104866 A EP98104866 A EP 98104866A EP 0890971 B1 EP0890971 B1 EP 0890971B1
Authority
EP
European Patent Office
Prior art keywords
base plate
fact
cover
cover according
flap
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
EP98104866A
Other languages
German (de)
English (en)
Other versions
EP0890971A3 (fr
EP0890971A2 (fr
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.)
Jean Mueller Elektrotechnische Fabrik GmbH
Original Assignee
Jean Mueller Elektrotechnische Fabrik GmbH
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 Jean Mueller Elektrotechnische Fabrik GmbH filed Critical Jean Mueller Elektrotechnische Fabrik GmbH
Publication of EP0890971A2 publication Critical patent/EP0890971A2/fr
Publication of EP0890971A3 publication Critical patent/EP0890971A3/fr
Application granted granted Critical
Publication of EP0890971B1 publication Critical patent/EP0890971B1/fr
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
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/2045—Mounting means or insulating parts of the base, e.g. covers, casings
    • 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
    • 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
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/205—Electric connections to contacts on the base
    • H01H2085/206—Electric connections to contacts on the base being tappable, e.g. terminals on the fuse or base being arranged so as to permit an additional connector to be engaged therewith
    • 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
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/203—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals
    • H01H85/204—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals for low voltage fuses with knife-blade end contacts
    • 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
    • H01H85/25—Safety arrangements preventing or inhibiting contact with live parts, including operation of isolation on removal of cover

Definitions

  • the invention relates to a cover made of insulating material For fuse contacts arranged in pairs on NH (low-voltage, high-performance) fuse strips or parts, wherein the cover two hood-shaped cover elements for the Fuse contacts and one arranged between the covers Has base plate.
  • Covers serve the contacts and especially on electrical ones Power distribution networks people working in front of the to protect against accidental contact with the contacts.
  • the contacts of such a fuse strip exist each consisting of a pair of resilient elements, between which the Contact knife of a fuse link inserted under pressure can be.
  • the two contact parts are one Contact integrally connected to each other on her lower foot. From the base of these contacts there is a connector for connection with a busbar.
  • Generally are on one Safety bar for the three phases of the three-phase network three pairs of contacts arranged in a row, one contact of the three contact pairs with one Leader is connected while the other three contacts are connected to a busbar and in general to be under tension. Between such a pair of contacts each arranged a fuse link, which with its Contact knife is inserted between the contact surfaces and can also be pulled out of these.
  • a cover of the type mentioned is from DE-OS 39 18 816, known. This is formed in two parts, one Hood and essentially part of a half of the base plate and the other part through the other hood and in the essential other half of the base plate is formed. At the Undersides of the base plate are provided in the area which the respective base plate part in the housing of the fuse block is clickable.
  • the one base plate part is in Area of its end face facing the other base plate part with a substantially semicircular shape Provide projection and it has the other base part appropriately designed recess through which the projection passes. When the base plate part having the projection is removed becomes the assembly connection under the recess for the busbar contact belonging to this fuse link accessible.
  • This connection consists essentially of one with the corresponding busbar contact connected discharge angle, the for example as an L-shaped rail with an elongated hole in the angled L-leg is formed, through which a screw bolt is guided can be so that the L-leg to the associated busbar can be screwed on.
  • a disadvantage of the known cover that when working on Bolts, for example to tighten them, part of the cover, namely the base plate part with the projection the associated hood must be removed, which is usually contact covered by the hood, which is certainly due to voltage can, is freely accessible. The person working in the area of the security line is therefore subject to an increased risk.
  • Another disadvantage is that the cover consists of two parts and therefore in the Assembly or disassembly of the cover always handled two components separately Need to become. The result is that a part remains loose and this cannot rule out that a part is lost or not assembled.
  • From GB 1 183 115 A is an electrical device for recording known of a backup.
  • the device has an insulating Material existing box with floor and perpendicular to it as well as in walls arranged at right angles to one another. With the floor Fuse contacts attached, with supply and discharge lines to the fuse contacts lead the openings in opposite walls of the Enforce box.
  • the floor is screwed to an earthing bar.
  • the clear cross section of the box is penetrated by an insulating one Material existing plate. This is double opposite angled.
  • a central section of the plate is parallel to the floor the box positioned and screwed to the floor. Further, in parallel sections arranged to the opposite walls of the box the plate cover the fuse contacts on their assigned Lines away from the side.
  • DE 35 44 534 A1 discloses a switchable NH fuse with a branching device known. There is the push-through opening for the finger contacts a locking plate associated with the branching device.
  • DE 93 09 654 U is a fuse disconnector with a cover for Receiving contacts on a contact carrier on which the cover over a locking connection is held described.
  • DE 43 17 052 A1 relates a protective cap for a NH fuse contact.
  • the problem is solved with a cover of the type mentioned in that the base plate is provided with a closable opening is.
  • the design of the cover according to the invention ensures that this always covers the pair of fuse contacts, regardless of whether Work in the area of the bolt must be carried out. So that the bolt is accessible, it is only required to make the opening accessible. In the between the two hoods formed opening space can then the screw bolt can be applied unhindered. Are the Assembly work finished, it is only necessary to open the opening to close the base plate. The two fuse contacts and the area between them are then safe to touch covered.
  • the cover is as Plastic injection molded part.
  • the cover is in one piece is trained. As a result, it can be handled as a unit are what their assembly and disassembly much easier. All functional elements of the cover are in one component housed, making their handling particularly easy.
  • the base plate is preferably a flap for closing assigned to the opening.
  • part of the cover with a the flap is connected to the base plate.
  • the one-piece cover thus also extends to the flap with it not as a separate and loosely connected to the base plate
  • Removable component is formed from the base plate. forms the flap part of the cover it is considered appropriate viewed when in kind of a film hinge with the base plate connected is. Without the functionality of the flap too can affect this due to the design of the hinge enough times to open or close the opening in the base plate can be pivoted.
  • locking means for locking Flap and base plate with the base plate opening closed are provided. This ensures that the flap does not swing into the open position unintentionally.
  • the flap is useful on its side facing away from the flap bearing lockable with the base plate. Further are preferred Latching means provided for latching the flap and base plate in the open position of the flap. In particular, the flap should Area of the flap bearing with the base plate or at least an approach connected to the base plate can be locked.
  • the respective hood is expediently designed like a cage. she points at least in its area facing the base plate Ventilation slots for removing the fuse during operation resulting heat loss.
  • the respective hood is expedient on its other hood facing side and its side facing away from the base plate with an angle slot for inserting the contact knife fuse insert to be inserted into the fuse strip or lower part provided, the slot in its the Slit area facing away from the base plate has a smaller width has than the thickness of the contact knife.
  • a dimensioning aid is used for positioning Switch on, which allows the operator with a defined force the respective contact blade of the NH fuse link with respect the cover and thus that behind the respective hood Align fuse contact. During the switching process the hood in this slot area widened and the switching knife guided past the position aid.
  • the cover with the fuse contacts is preferably connected, in particular it is clipped onto this.
  • the cover resilient projections be, for clipping the cover on the associated Safety contact, the corresponding recesses for engagement which has protrusions.
  • a further development provides that at least one of the hoods an opening for inserting a contact element has separate current outlet, the contact element of the separate current outlet on a contact knife one in the Fuse contacts plugged in NH fuse link is.
  • a cover element is preferably in the hood for the contact element of the separate pluggable into the hood Integrated power outlet.
  • Such a separate power outlet the is also known in practice as a piggyback tap usually the purpose of a temporary power tap enable, for example to operate construction sites, notch or fair events, etc. Is the current tapped from the feed-in side, this is additionally secured.
  • the projections can be designed so that it used separate power outlet with its contact element detented. There is thus an unintentional loosening of the separate one Current outlet, for example due to the contact element initiated vibrations, effectively prevented.
  • the power plate on both sides between the two covers with removable cover flaps is provided.
  • These can be found for the special area of application the sliding separation of a rail system use. in this connection are located below adjacent covers, in Busbars ending at a distance from one another by means of a Slidable in the longitudinal direction of the respective cover plate Connecting element electrically connectable. This connector becomes accessible if the cover flaps are adjacent Covers broken out of the cover plate or when in Kind of a film hinge are formed from the level of Cover plate can be swung out, so that there the area below the two covers for connecting or disconnecting the is accessible to both busbars.
  • Figure 7 illustrates that the cover 1 of the invention is designed as a one-piece injection molded part made of plastic, a base plate 2 and two themselves in the area of their ends this has extending hoods 3.
  • the hoods 3 are in the Area of the base plate arranged perpendicular to this Provide ventilation slots 4.
  • the respective hood 3 has their side facing the other hood 3 and on their Base plate 2 facing away from an angle slot 5 through each a contact knife 6 of an NH fuse link 7 can be inserted into the hood 3.
  • the cover 1 serves covering two fuse contacts, not shown, by means of the hoods 3 and the one below the cover 1 Area of an NH fuse block or an NH lower part.
  • the fuse link 7 has an insulating body 30.
  • the penetrating the insulating body 30 Fusible conductors are connected to the contact blades 6 and by means of the cover plates 28 with the insulating body 30 screwed.
  • the specific structure of the cover 1 is shown in FIGS. 1 to 6 illustrates:
  • the respective angular slot 5 has one Slot area 5a extending parallel to the base plate 2 and a slot area extending perpendicular to the base plate 2 5b.
  • the angular slot 5 is in the slot area 5b slightly wider than the thickness of the contact knife 6.
  • the slot 5 runs in the area of the slot area 5a slightly conical in the direction of the slot area 5b to, the tapered end of the slot portion 5b a has a smaller width than the thickness of the contact knife 6.
  • the tapered area is shown as bead 8, which for the with the fuse link 7 workers the function of a Has positioning aid.
  • FIGS. 7 to 10 The variant of the cover shown in FIGS. 7 to 10 with a combined piggyback pick-off is used in addition to the Representation of Figures 1 to 6 referenced.
  • a hood 3 illustrates that this on their the other hood 3 facing side two resilient projections 19, between which the upper part of the vertical Slot area 5b is formed.
  • the hood 3 remains a gap 22 for inserting one with a NH fuse provided power outlet 24, the NH fuse due to the enclosing housing 25 only in the area whose tabs 26 are visible.
  • reference numeral 27 is the electrical cable outgoing from the outlet 24 denotes.

Landscapes

  • Fuses (AREA)

Claims (17)

  1. Couvercle (1) en matière isolante pour des contacts de fusibles d'un coupe-circuit basse tension à haut pouvoir de coupure ou de parties de coupe-circuit, le couvercle (1) se composant de deux chapeaux (3) pour les contacts de fusibles et d'une plaque de base (2) entre les deux chapeaux (3),
    caractérisé en ce que
    le couvercle (1) est réalisé en une seule piéce et la plaque de base (2) comporte une ouverture (10) qui peut être fermée.
  2. Couvercle selon la revendication 1,
    caractérisé en ce que
    la plaque de base (2) comporte un volet (11) pour fermer l'ouverture (10).
  3. Couvercle selon la revendication 2,
    caractérisé en ce que
    le volet (11) est relié à la plaque de base (2), en particulier par une charnière en forme de film (13).
  4. Couvercle selon la revendication 2 ou 3,
    caractérisé par
    des moyens d'accrochage (16, 17) pour enclipser le volet (11) et la plaque de base (2) lorsque l'ouverture (10) de la plaque de base (2) est fermée.
  5. Couvercle selon la revendication 4,
    caractérisé en ce que
    le volet (11) s'accroche à la plaque de base (2) par son côté opposé au palier du volet.
  6. Couvercle selon l'une des revendications 1 à 5,
    caractérisé par
    des moyens d'accrochage (14, 15) pour encliqueter le volet (11) et la plaque de base (2) lorsque le volet (11) est en position ouverte.
  7. Couvercle selon la revendication 6,
    caractérisé en ce que
    le volet (11) s'accroche à la plaque de base (2) au niveau de son palier ou avec au moins un prolongement (14) relié à la plaque de base (2).
  8. Couvercle selon l'une des revendications 1 à 7,
    caractérisé en ce que
    chaque chapeau (3) est en forme de cage et au moins sa zone tournée vers la plaque de base (2) comporte des fentes de ventilation (4).
  9. Couvercle selon l'une des revendications 1 à 8,
    caractérisé en ce que
    le chapeau (3) comporte sur son côté tourné vers l'autre chapeau (3) et sur son côté opposé à la plaque de base (2), une fente coudée (5) pour introduire le couteau de contact (6) d'une cartouche à couteaux (7) qui se place dans le coupe-circuit ou un élément de celui-ci, la fente coudée (5) ayant dans sa zone (5a) à l'opposé de la plaque de base (2) une largeur inférieure à l'épaisseur du couteau de contact (6) et le chapeau (3) est élastique dans cette zone.
  10. Couvercle selon l'une des revendications 1 à 9,
    caractérisé en ce qu'
    il peut être relié aux contacts de coupe-circuit, en particulier être en-clipsé sur ceux-ci.
  11. Couvercle selon la revendication 10,
    caractérisé par
    des parties en saillie (9) élastiques intégrées dans le chapeau (3) respectif pour enclipser le couvercle sur le contact de coupe-circuit associé.
  12. Couvercle selon l'une des revendications 1 à 11,
    caractérisé en ce qu'
    au moins l'un des chapeaux (3) comporte une ouverture (22) pour recevoir un élément de contact (23) d'une sortie de courant (24) séparée, l'élément de contact (23) de cette sortie de contact séparée (24) pouvant s'enficher sur un couteau de contact (6) d'une cartouche de coupe-circuit basse tension à haut pouvoir de coupure (7) qui peut s'enficher dans les contacts de coupe-circuit.
  13. Couvercle selon la revendication 12,
    caractérisé en ce qu'
    un élément de recouvrement (19) pour l'élément de contact (23) qui se glisse dans le couvercle (3) et appartient à la sortie de courant séparée (24) est intégré au chapeau (3).
  14. Couvercle selon la revendication 12 ou 13,
    caractérisé en ce qu'
    au moins le côté d'un chapeau (3), tourné vers l'autre chapeau (3), intègre au moins deux parties en saillie (19) élastiques et entre l'extrémité libre (20) des parties en saillie élastiques (19) et la surface de recouvrement (21) du chapeau (3), il se forme un intervalle (22) pour introduire l'élément de contact (23) de la sortie de courant (24).
  15. Couvercle selon la revendication 14,
    caractérisé par
    au moins une partie en saillie élastique (19) au niveau de son extrémité libre (20) qui, lorsque la sortie de courant séparée (24) est engagée, s'accroche avec son élément de contact (23).
  16. Couvercle selon l'une des revendications 1 à 15,
    caractérisé en ce que
    la plaque de base (2) comporte, de part et d'autre, entre les deux chapeaux (3), des volets de recouvrement (18) qui peuvent s'enlever.
  17. Couvercle selon l'une des revendications 1 à 16,
    caractérisé en ce qu'
    il est en matière plastique et en particulier sous la forme d'une pièce en matière plastique injectée.
EP98104866A 1997-07-11 1998-03-18 Couvercle pour contacts de fusibles dans les dispositifs à fusibles du type basse tension haute puissance Expired - Lifetime EP0890971B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19729885A DE19729885A1 (de) 1997-07-11 1997-07-11 Abdeckung für Sicherungskontakte an NH-Sicherungsleisten oder -unterteilen
DE19729885 1997-07-11

Publications (3)

Publication Number Publication Date
EP0890971A2 EP0890971A2 (fr) 1999-01-13
EP0890971A3 EP0890971A3 (fr) 2000-01-05
EP0890971B1 true EP0890971B1 (fr) 2004-02-11

Family

ID=7835482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98104866A Expired - Lifetime EP0890971B1 (fr) 1997-07-11 1998-03-18 Couvercle pour contacts de fusibles dans les dispositifs à fusibles du type basse tension haute puissance

Country Status (3)

Country Link
EP (1) EP0890971B1 (fr)
AT (1) ATE259540T1 (fr)
DE (2) DE19729885A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19911852B4 (de) * 1999-03-17 2007-12-13 Efen Gmbh Aufstecksicherung
DE19917403A1 (de) * 1999-04-16 2000-10-19 Mueller Jean Ohg Elektrotech Sicherungslasttrennschalter in Leistenbauform für NH-Sicherungen
DE10210993A1 (de) * 2002-03-13 2003-10-02 Hubert Stueken Gmbh & Co Kappe, insbesondere für eine Sicherung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1183115A (en) * 1967-09-07 1970-03-04 Artic Fuse And Electrical Mfg Improvements in Means for Shrouding Electrical Contacts
DE2515692C3 (de) * 1975-04-10 1984-07-26 Siemens AG, 1000 Berlin und 8000 München NH-Sicherungsunterteil zum Aufsetzen auf Sammelschienen
DE2606130C3 (de) * 1976-02-17 1981-06-11 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Anschlußvorrichtung
DE3544534A1 (de) * 1985-12-17 1987-06-19 Geyer Gmbh & Co Christian Schaltbare nh-sicherung mit abzweigeinrichtung
DE3918816C2 (de) * 1989-06-09 1997-04-24 Efen Elektrotech Fab Abdeckung für NH-Sicherungsleisten oder -unterteile
DE4317052C2 (de) * 1993-05-21 1995-10-19 Felten & Guilleaume Energie Schutzkappe für einen Aufnahmekontakt für eine NH-Sicherung
DE9309654U1 (de) * 1993-06-29 1993-09-02 Siemens AG, 80333 München Sicherungstrennschalter

Also Published As

Publication number Publication date
DE19729885A1 (de) 1999-02-04
EP0890971A3 (fr) 2000-01-05
DE59810732D1 (de) 2004-03-18
ATE259540T1 (de) 2004-02-15
EP0890971A2 (fr) 1999-01-13

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