EP0238960B1 - Appareil électrique d'installation - Google Patents

Appareil électrique d'installation Download PDF

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Publication number
EP0238960B1
EP0238960B1 EP87103747A EP87103747A EP0238960B1 EP 0238960 B1 EP0238960 B1 EP 0238960B1 EP 87103747 A EP87103747 A EP 87103747A EP 87103747 A EP87103747 A EP 87103747A EP 0238960 B1 EP0238960 B1 EP 0238960B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
low
installation unit
electrical installation
unit according
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
EP87103747A
Other languages
German (de)
English (en)
Other versions
EP0238960A1 (fr
Inventor
Hermann Dipl.-Ing. Menges
Hermann Schmitt
Walter Schlömer
Horst Von Elm
Erwin Leible
Manfred Fischer
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.)
ASEA BROWN BOVERI AKTIENGESELLSCHAFT
Original Assignee
ASEA BROWN BOVERI AG
Asea Brown Boveri AG Germany
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
Priority claimed from DE19863610451 external-priority patent/DE3610451A1/de
Priority claimed from DE19863611754 external-priority patent/DE3611754A1/de
Application filed by ASEA BROWN BOVERI AG, Asea Brown Boveri AG Germany filed Critical ASEA BROWN BOVERI AG
Priority to AT87103747T priority Critical patent/ATE71473T1/de
Publication of EP0238960A1 publication Critical patent/EP0238960A1/fr
Application granted granted Critical
Publication of EP0238960B1 publication Critical patent/EP0238960B1/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
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/06—Housings; Casings; Bases; Mountings
    • H01H73/08—Plug-in housings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H01H2071/088—Terminals for switching devices which make the devices interchangeable, e.g. with fuses
    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals

Definitions

  • the invention relates to an electrical installation device according to the preamble of claim 1.
  • NH fuses are generally installed in electrical distribution systems. These NH fuses each consist of an NH fuse link and a specially prepared NH fuse base in which it can be inserted with a special handling device.
  • the lower parts normally have an insulating plate as a support plate, to which L-shaped contact angles are attached at a distance from one another.
  • the leg ends which run perpendicular to the insulating material or support plate, carry fork contacts spring-loaded by a ring spring, into the knife contacts located on the NH fuse links be pinched.
  • the parallel to the insulating support plate and the attached legs of the contact angle are designed as contact pieces and provided with clamping screws for connecting supply and discharge conductors.
  • the NH fuses are in turn in a junction box, which is usually sealed.
  • the known NH fuses have fuse links, which after a response, i. H. need to be replaced after melting due to an overcurrent.
  • the connection housing must be opened and its seal must be released.
  • the replacement of the NH fuse links may only be carried out by an authorized specialist, who must also replace the lead seal on the connection housing equipped with the NH fuses. This affects the handling of the NH fuses.
  • connection device for circuit breakers has become known in which the circuit breakers are assigned connection adapters which can be connected to connection terminals arranged on both sides, the shape that the circuit breaker with terminal lugs can be used in the connection terminals. There is no reference to NH fuses in DE-B-26 04 356.
  • the object of the invention is to improve the handling of the NH fuses.
  • an automatic circuit breaker instead of the usual NH fuse link, an automatic circuit breaker is provided, the knife contacts attached to which engage in the fork contact pieces of the NH fuse base.
  • the switch contact located in the circuit breaker opens automatically and thus interrupts the current flow.
  • the switch contact can be closed by hand by operating a switch toggle without having to open the connection housing. This can be done safely by any person, i.e. that is, an approved professional is no longer required in this case.
  • a commercially available circuit breaker can be provided, with clamping screws provided for connecting the current conductors, to which connecting lugs are fastened, which have knife contacts, which can then be inserted into the fork contacts.
  • the connection lugs on the circuit breaker are installed on site by an approved specialist during the initial installation.
  • FIG. 1 shows an NH fuse base 10 for one phase.
  • This lower fuse part 10 has an insulating material carrier 11, on the upper surface of which L-shaped contact angles 12 and 13 are arranged at a distance from one another.
  • the legs of the contact pieces 14 and 15, which run perpendicular to the longitudinal extent of the carrier 11, carry fork contacts 16, 17; these fork contacts 16, 17 are generally known and therefore do not need to be described in detail.
  • the legs 18 and 19 which run parallel to the longitudinal extent of the insulating material carrier 11 carry clamping screws 20 and 21 to which supply and discharge elements (not shown in more detail) can be connected.
  • a circuit breaker 22 are placed, which triggers automatically or can be actuated manually by means of a switching knob 24.
  • the switch toggle 24 is arranged on the front side of the circuit breaker 22 and is shown in FIG. 1 on the right side of the circuit breaker 22 shown in a side view.
  • connecting lugs 26 emerge from the circuit breaker 22, on which knife contact pieces 30, 31 are formed, which engage in the fork contacts 16, 17 of the NH fuse-lower part 10.
  • the connection lugs 26, 28 are each electrically conductively connected to a switch contact (not shown) of the circuit breaker 22, so that a current flows when the switch contacts are closed.
  • the switching knob 26 is actuated or in the case of irregular operating conditions, the circuit breaker 22 trips in a known manner and interrupts the circuit.
  • FIG. 2 shows an arrangement of a novel NH fuse, as is essentially already known from FIG. 1.
  • a circuit breaker 23 is placed, which also trips automatically or can be actuated manually by means of a switching knob 26.
  • the terminals which are not described in any more detail, are designed in a known manner, the terminal bridge being acted upon by two screws.
  • a contact lug 40 is formed at an angle of 90 °, to which a knife contact 31 connects, integrally connected to it.
  • a through bore 42 is provided in the leg 36, the position of which corresponds to a corresponding bore 44 in the housing of the circuit breaker 23. Screws 46 are guided through these mutually aligned bores 42, 44, which are screwed on the side facing the NH lower part by means of nuts 47.
  • the shape of the connecting lugs 28 is dimensionally adapted to the clearance profile of the circuit breaker 23 and lies close to its surface.
  • the outer dimensions of the circuit breaker 23 thereby increase on the narrow sides and on the bottom surface in each case by the thickness of the connecting lugs 28 designed as current conductors.
  • a recess is outlined with hatched lines 48, which receives the connection terminal (not shown in more detail) and the motor space required for fastening the connecting lugs 28.
  • a connecting tab 28 is shown in perspective.
  • the connecting tab 28 is in the form of a U-shaped double bracket made of a flat rod made of conductive material z. B. nickel silver, copper or the like.
  • the upper free leg 34 is provided for connection to the terminals of the circuit breaker 23. For exact adjustment, this leg 34 is set in two steps.
  • a first step 48 serves as a stop against the housing of the circuit breaker, while a second step 50, which is arranged towards the free end, serves as a stop for the connecting terminal.
  • the connecting lug 28 continues at a right angle to the leg 34 in a conductor piece 38. In the installed state, this conductor piece 38 forms the outer boundary of the circuit breaker 23.
  • the length of the conductor piece 38 corresponds to the horizontal distance of the bottom surface 25 of the circuit breaker 23 to its terminal, d. H. the leg 36, which adjoins it at right angles at the lower end of the conductor piece 38, is angled so that it can be inserted tightly into the circuit breaker 23 by hand, but with a certain amount of force in order to bend the resilient legs 34, 36, and already without it further measure maintains its location.
  • the connecting lug 28 is provided with a bore 52 in the leg 36, which runs as an elongated hole in the longitudinal direction of the leg 36 to compensate for tolerances. Aligned with this bore 52, illustrated by the line XX, a further bore 54 is provided in the leg 34, which serves as an assembly opening through which the fastening screws in the bore 52 can be accessed by means of a tool.
  • a contact lug 40 is formed at right angles, to which a knife contact 31 connects, the longitudinal axis of which extends parallel to that of the leg 36 and thus parallel to the longitudinal axis of the circuit breaker 23.
  • the leg 36 is additionally provided with stiffening ribs 56, 58, by means of which the bending stiffness of this arrangement is increased.
  • FIG. 4 shows a cover cap 60 in a perspective view.
  • a rectangular, elongated base plate 62 adapted to the width of the protective switch 23, on the side edges 64 and 65 of which a leg 66 and 67 forming a U are formed; the legs 66, 67 have different lengths; an area 68 with a short leg length is connected via an inclined surface or bevel edge 63 to an area 69 with a longer leg length; this leg length is the side contour of the circuit breaker 23, adapted so that the end edges of the legs 66 and 67 connect exactly to the narrow side surface.
  • a roof part 71 adjoins the upper edge 70 of the base plate 62 at a right angle and continues in a transverse wall 72 which is arranged parallel to the base plate 6.
  • the transverse wall 72 carries a roof-shaped projection 74 which also adjoins it at right angles.
  • the projection 74 projects laterally in some areas and thus forms extensions 76 on both sides, which are interrupted by a transverse slot 77.
  • a coupling part 78 which has two mutually parallel stiffening ribs 80, is placed on the projection 74 symmetrically to an imaginary center line.
  • the free end of the coupling part 78 merges into a crosspiece 82 with a T-shaped attachment 84.
  • the coupling part 78 has a step 86 in its horizontal course, as a result of which a gap 88 is formed between the coupling part 78 and the free end 75 of the projection 74. in which the housing wall of the circuit breaker 23 engages when the cover 60 is snapped open.
  • FIG. 5 shows a side view of the circuit breaker 23 designed according to the invention with covers 60, the course of the connecting lug 28 in cooperation with the cover 60 according to the invention being shown in broken lines in regions.
  • the reference numerals correspond to the features already explained in FIGS. 2 to 4. In this respect, only further details not yet mentioned will be discussed here.
  • a space 29 is delimited by the transverse wall 72 of the cover cap 60, which allows access from above to clamping screws, not shown, when the cover 60 is removed.
  • FIG. 6 shows the view of a narrow side of the arrangement shown in FIG. 5.
  • the projections 76 formed on the roof-shaped projection 74 engage in guide grooves 90 recessed for this purpose in the housing of the circuit breaker 23 and in this way make it possible for forces acting from the direction of arrow P to put on or remove the circuit breaker from the NH Lower fuse part 10 to be transmitted via the coupling part 78.
  • the automatic circuit breaker 22, 23 replaces the fusible link insert previously provided, the current being supplied by means of connecting tabs 26 or connecting tabs 28 provided with knife contacts 30, 31, each of which is electrically conductively connected to the contacts of the circuit breaker 22, 23.
  • NH fuse according to the invention is provided if the existing installation designed with the NH fuse base is to be retained and only the fuse link is to be replaced in order to avoid the effort otherwise required for its future renewal.

Landscapes

  • Fuses (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (9)

  1. Appareil d'installation électrique utilisé en tant que coupe-circuit basse tension à pouvoir de coupure élevé, également appelé coupe-circuit BT à pouvoir de coupure élevé, comportant une partie inférieure (10) et une partie insert (22, 23) raccordable à la partie inférieure (10), caractérisé par le fait que la partie insert (22, 23) du coupe-circuit BT à pouvoir de coupure élevé est un disjoncteur de protection automatique possédant des contacts à couteau (30, 31) qui sont formés sur des pattes de connexion (26, 40) et peuvent être engagés dans des pièces de contact en forme de fourche (16, 17) de la partie inférieure du coupe-circuit BT à pouvoir de coupure élevé, par le fait que sur chaque côté étroit du disjoncteur de protection (23) s'étendant perpendiculairement à la ligne joignant les pièces de contact en forme de fourche est emboîtée-enclenchée une coiffe (60) sur laquelle est formée une partie accouplement (78) qui, lorsque les coiffes (60) sont emboîtées, autorise la mise en place d'un dispositif d'extraction prévu pour des coupe-circuit BT à pouvoir de coupure élevé d'un type commercial courant, chaque coiffe servant en même temps de protection contre les contacts accidentels.
  2. Appareil d'installation électrique selon revendication 1, caractérisé par le fait que le disjoncteur de protection est équipé de pattes de liaison (28) qui sont disposées sur ses côtés étroits et qui, à une extrémité, sont reliées chacune à une borne de connexion du disjoncteur de protection (23), et, en leur autre extrémité, présentent chacune une patte de connexion (40) sur laquelle le contact à couteau (31) est formé.
  3. Appareil d'installation électrique selon revendication 2, caractérisé par le fait que les pattes de liaison (28) sont disposées dans des évidements prévus à cette fin dans les côtés étroits et dans le fond (25) du disjoncteur de protection.
  4. Appareil d'installation électrique selon revendication 2, caractérisé par le fait que chacune des pattes de liaison (28) est façonnée, à partir d'une barre plate, en une double cornière, à une première branche (36) de laquelle se raccorde perpendiculairement une patte de connexion (40) sur laquelle est formé un contact à couteau (31).
  5. Appareil d'installation électrique selon l'une des revendications précédentes, caractérisé par le fait que l'autre branche (34) de la patte de liaison (28) réalisée en tant que double cornière se rétrécit en direction de son extrémité libre, en formant deux gradins (46, 50), et par le fait que l'un des gradins (46, 50) sert de butée contre le boîtier du disjoncteur de protection (23) ou contre une borne de connexion du disjoncteur de protection (23).
  6. Appareil d'installation électrique selon l'une des revendications précédentes, caractérisé par le fait que les branches (34, 36) de la patte de liaison (28) sont munies de trous traversants (52, 54) qui servent à la fixation mécanique de la patte de liaison (28) au boîtier du disjoncteur de protection (23), le trou (52) aménagé dans la branche (36) avec le contact à couteau étant réalisé en tant que trou oblong dont l'axe longitudinal s'étend dans la même direction que la branche (36) et reçoit une vis traversante (48), tandis que le trou (54) se trouvant dans l'autre branche (34) sert d'ouverture de montage pour un outil d'actionnement.
  7. Appareil d'installation électrique selon l'une des revendications précédentes, caractérisé par le fait que la branche (36) de la patte de liaison (28) munie du contact à couteau (31) présente des nervures de raidissement (56, 58) pour accroître la résistance à la flexion.
  8. Appareil d'installation électrique selon l'une des revendications précédentes, caractérisé par le fait que chaque coiffe de (60) sert en même temps à protéger les pattes de liaison (28) contre les contacts accidentels et recouvre celles-ci.
  9. Appareil d'installation électrique selon l'une des revendications précédentes, caractérisé par le fait que chaque chambre réceptrice de borne présente deux rainures (90) tournées l'une vers l'autre, lesquelles reçoivent des saillies latérales (76) d'une coiffe de (60) pour le guidage de cette dernière.
EP87103747A 1986-03-27 1987-03-14 Appareil électrique d'installation Expired - Lifetime EP0238960B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87103747T ATE71473T1 (de) 1986-03-27 1987-03-14 Elektrisches installationsgeraet.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19863610451 DE3610451A1 (de) 1986-03-27 1986-03-27 Elektrisches installationsgeraet
DE3610451 1986-03-27
DE19863611754 DE3611754A1 (de) 1986-04-08 1986-04-08 Niederspannungs-hochleistungssicherung
DE3611754 1986-04-08

Publications (2)

Publication Number Publication Date
EP0238960A1 EP0238960A1 (fr) 1987-09-30
EP0238960B1 true EP0238960B1 (fr) 1992-01-08

Family

ID=25842414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103747A Expired - Lifetime EP0238960B1 (fr) 1986-03-27 1987-03-14 Appareil électrique d'installation

Country Status (3)

Country Link
EP (1) EP0238960B1 (fr)
AT (1) ATE71473T1 (fr)
DE (1) DE3775800D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013803A1 (de) * 1990-04-28 1991-10-31 Jung Gmbh Albrecht Abdeckrahmen mit beschriftungsschild fuer elektrische unterputz-installationsgeraete
GB9511278D0 (en) * 1995-06-05 1995-08-02 Square D Co Improvements in and relating to circuit breakers
EP0748018A3 (fr) * 1995-06-05 1998-06-24 Square D Company Adaptateur pour interrupteur
AT404646B (de) * 1995-06-20 1999-01-25 Felten & Guilleaume Ag Oester Vorrichtung zum verhindern des berührens von anschlussklemmen von schaltgeräten
DE19632726A1 (de) * 1996-08-14 1998-02-19 Abb Patent Gmbh Elektrischer Leitungsschutzschalter
FR2774506B1 (fr) * 1998-02-05 2002-12-13 Cahors App Elec Dispositif de protection des reseaux de distribution basse tension
WO2001029856A1 (fr) * 1999-10-18 2001-04-26 Abb Patent Gmbh Interrupteur electrique d'installation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344394A (en) * 1966-05-16 1967-09-26 Zinsco Electrical Products Limited engagement lug assembly
US3437970A (en) * 1966-09-07 1969-04-08 Ite Circuit Breaker Ltd Circuit breaker device including simplified housing assembly and external contacts
DE2604356C3 (de) * 1976-02-05 1979-08-02 Brown, Boveri & Cie Ag, 6800 Mannheim Anschlußvorrichtung für Sicherungsautomaten
DE8334532U1 (de) * 1983-12-01 1985-02-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Abdeckung für offenliegende Anschlußklemmen von Schaltgeräten
DE3437802A1 (de) * 1984-10-16 1986-04-17 Horst von 2900 Oldenburg Elm Adapter fuer hauptsicherungsautomaten

Also Published As

Publication number Publication date
ATE71473T1 (de) 1992-01-15
DE3775800D1 (de) 1992-02-20
EP0238960A1 (fr) 1987-09-30

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