EP0358287B1 - Elément-moteur pour un disjoncteur électrique multipolaire de puissance basse tension - Google Patents

Elément-moteur pour un disjoncteur électrique multipolaire de puissance basse tension Download PDF

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Publication number
EP0358287B1
EP0358287B1 EP89250027A EP89250027A EP0358287B1 EP 0358287 B1 EP0358287 B1 EP 0358287B1 EP 89250027 A EP89250027 A EP 89250027A EP 89250027 A EP89250027 A EP 89250027A EP 0358287 B1 EP0358287 B1 EP 0358287B1
Authority
EP
European Patent Office
Prior art keywords
metal body
actuator module
module according
insulating material
parts
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
EP89250027A
Other languages
German (de)
English (en)
Other versions
EP0358287A3 (fr
EP0358287A2 (fr
Inventor
Clifford A. Buxton
David A. Leone
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 EP0358287A2 publication Critical patent/EP0358287A2/fr
Publication of EP0358287A3 publication Critical patent/EP0358287A3/fr
Application granted granted Critical
Publication of EP0358287B1 publication Critical patent/EP0358287B1/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
    • H01H73/04—Contacts
    • 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
    • H01H9/0072—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 particular to three-phase switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • 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
    • H01H2009/0088—Details of rotatable shafts common to more than one pole or switch unit
    • 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
    • H01H2009/0094—Details of rotatable shafts which are subdivided; details of the coupling means thereof

Definitions

  • the invention relates to a drive component with arm parts for articulated connection with a drive device for the simultaneous actuation of movable contact levers of a multi-pole low-voltage circuit breaker, with an inner metal body which is essentially dimensioned according to the length of the drive component and an outer jacket body made of insulating material which is firmly connected to this, as a carrier of Holders for contact levers and insulating shields arranged between the poles to protect against flashovers between neighboring poles.
  • a drive component of this type is known for example from DE-B-27 57 696 (closest prior art).
  • the drive component serves as a control shaft, i.e. H. the drive component also performs the function of the swivel axis when the movable contact levers are switched on and off.
  • drive components of the type considered here can also be used as a purely insulating and supporting element for contact arrangements as a switching crossbar, the pivot axis not coinciding with the longitudinal axis of the drive component. Examples of such switch beams are found in US-A-4 137 437, 4 524 339 and 4 580 021.
  • the invention has for its object to design the drive component so that it has a high mechanical strength with the lowest possible weight and that the occurrence of leakage currents or arcing is counteracted more effectively than before.
  • the metal body is formed over its entire length with a thin-walled angled cross-sectional shape, that the arm parts are attached to the metal body and that the insulating shields are part of the jacket body made of insulating material.
  • the metal body has a design to improve the adhesive connection between the metal body and the jacket body.
  • the opening of openings on the metal body for the passage of the insulating material of the jacket body has proven to be particularly advantageous.
  • the desired high mechanical strength of the drive component can advantageously be achieved in that the metal body has a profile part with a U-shaped cross section.
  • a further increase in strength can be achieved in that two U-profile parts connected to one another with their central parts are used to form a metal body with an I-profile.
  • the middle parts of the connected U-shaped profile parts can have corresponding openings for the passage of the insulating material of the jacket body.
  • webs can be provided which extend from at least one edge of each of the corresponding openings.
  • a rectangular hollow profile in particular a hollow profile with a square shape, is also suitable for forming the metal body.
  • Figures 1 and 2 show in two plan views rotated 90 ° against each other a switching crossbeam for a low-voltage circuit breaker.
  • FIG. 3 shows an end view of the switching crossbar according to FIGS. 1 and 2.
  • FIGS. 4 and 5 also show a metal body contained in the switching crossbar according to FIGS. 1 and 2 in two plan views rotated by 90 ° with respect to one another.
  • FIG. 6 shows an end view of the metal body according to FIGS. 4 and 5.
  • FIG. 7 also shows a metal body with a square profile part in an end view.
  • a switch cross member 10 is shown as a drive component in a three-pole low-voltage circuit breaker of compact design with molded housing.
  • the switching crossbar 10 comprises a jacket body 12 made of an insulating plastic and an inner metal body 14.
  • the jacket part 12 has insulating material shields 16, two of which are arranged on both sides of a drive arm 18 which is provided as an arm part and is used for the articulated connection to a drive device of the circuit breaker. At the ends of the switching crossmember 10 and in the space between the two pairs of insulating shields 16, the jacket body 12 forms holders 20 for attaching contact levers. In the area of the drive arms 18 and between the associated insulating shields 16, the casing body 12 forms sections with a smaller cross section.
  • the holders 20 each have holes 24 for the attachment of contact levers, holes 26 for tension springs and openings 28 and 30 for compression springs.
  • the holes 24 are used to fasten a carrier of the contact levers to the switching crossmember 10.
  • the holes 28 serve to receive contact force springs for the main contacts in accordance with the number of contact levers belonging to each pole.
  • the respective one opening 30 in each of the holders 20 serves to receive a compression spring, which is provided as a contact force spring for the erosion or pre-contacts.
  • the compression springs cause an essentially uniform distribution of the force on the contact pieces on the contact levers.
  • the contact carrier is attached to the switching crossbar in such a way that the switching crossbar 10 can be moved to a limited extent relative to the contact carrier. to allow compression of the compression springs when closing.
  • the tension springs to be fitted in the holes 24 serve to provide the opening force on the switching crossmember 10 in such a way that the contact arrangements are opened.
  • FIGS. 4, 5 and 6 show details of the metal body 14 contained in the switching crossbar 10 according to FIGS. 1, 2 and 3. It can be seen in particular from FIGS. 1 and 2 that the metal body 14 is dimensioned somewhat shorter than the switching crossmember 10, as a result of which the end faces of the metal body are also covered by the insulating plastic of the jacket part 12.
  • the metal body 14 has the drive arms 18, which consist of two mutually arranged angle pieces 36. In each of the elbows 36 there is an opening for a pin, which is used to connect the switch crossbar to the drive device of the circuit breaker.
  • the metal body 14 In cross section, the metal body 14 is essentially I-shaped. In order to provide this cross-sectional shape, two U-shaped or C-shaped profile parts 32 are connected to one another with their central parts. The elbows 36 rest on the adjacent legs of the two profile parts 32 and close with them approximately flush.
  • the metal body 14 is provided with openings 33 which are correspondingly provided in the middle parts of both profile parts 32.
  • a web 34 is arranged, for. B. by bending out of the opening 33 to achieve a firm anchoring of the insulating plastic on the metal body 14.
  • An arrangement of openings 33 and webs 34 is located in the area of each of the three holders 20.
  • FIG. 7 also shows that a rectangular or square profile part 38 is also suitable, which corresponds approximately to the total cross section of the two profile parts 32 in FIG. 6.

Landscapes

  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (8)

  1. Elément d'entraînement (10) comportant des parties formant bras (18) pour établir une liaison articulée avec un dispositif d'entraînement servant à actionner simultanément des leviers de contact mobiles d'un disjoncteur basse tension multipolaire, comportant une pièce (14) métallique intérieure dimensionnée de manière à correspondre essentiellement à la longueur de l'élément d'entraînement (10), et une pièce enveloppe (12) extérieure reliée rigidement à cette pièce métallique, en matière isolante et servant de support d'éléments de retenue (20) de levier de contact, ainsi que des blindages (16) en matière isolante disposés entre les pôles et destinés à donner une protection vis-à-vis de claquages entre des pôles voisins, caractérisé par le fait que la pièce métallique (14) a, sur toute sa longueur, une forme de section transversale coudée à paroi mince, que les parties formant bras (18) sont fixées à la pièce (14) métallique et que les blindages (16) en matière isolante font partie de la pièce enveloppe (12) en matière isolante.
  2. Elément d'entraînement suivant la revendication 1, caractérisé par le fait que la pièce métallique (14) a un agencement permettant d'améliorer la liaison par adhérence entre la pièce métallique (14) et la pièce enveloppe (12).
  3. Elément d'entraînement suivant la revendication 2, caractérisé par le fait que la pièce métallique (14) a des ouvertures (33) pour le passage de la matière isolante de la pièce enveloppe (12).
  4. Elément d'entraînement suivant l'une des revendications précédentes, caractérisé par le fait que la pièce (14) métallique a une partie profilée (32) de section transversale en forme de U.
  5. Elément d'entraînement suivant la revendication 4, caractérisé par le fait que la pièce (14) métallique est constituée de deux pièces (32) profilées en U, reliées entre elles par leurs parties centrales pour former un profilé en I.
  6. Elément d'entraînement suivant la revendication 5, caractérisé par le fait que les parties centrales des pièces (32) profilées en U reliées ont des ouvertures (33) correspondantes pour le passage de la matière isolante de la pièce enveloppe (12).
  7. Elément d'entraînement suivant la revendication 6, caractérisé par le fait qu'une barrette (34) s'étend à partir d'au moins un bord de chacune des ouvertures (33).
  8. Elément d'entraînement suivant la revendication 1, caractérisé par le fait que la pièce métallique a la forme d'une pièce (38) profilée creuse rectangulaire .
EP89250027A 1988-09-08 1989-09-07 Elément-moteur pour un disjoncteur électrique multipolaire de puissance basse tension Expired - Lifetime EP0358287B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US242091 1988-09-08
US07/242,091 US4866225A (en) 1988-09-08 1988-09-08 Insulated light weight metallic crossbar in polyphase circuit breaker assemblies for inhibiting arcing

Publications (3)

Publication Number Publication Date
EP0358287A2 EP0358287A2 (fr) 1990-03-14
EP0358287A3 EP0358287A3 (fr) 1991-11-06
EP0358287B1 true EP0358287B1 (fr) 1994-11-30

Family

ID=22913414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250027A Expired - Lifetime EP0358287B1 (fr) 1988-09-08 1989-09-07 Elément-moteur pour un disjoncteur électrique multipolaire de puissance basse tension

Country Status (6)

Country Link
US (1) US4866225A (fr)
EP (1) EP0358287B1 (fr)
JP (1) JPH02117023A (fr)
CA (1) CA1330818C (fr)
DE (1) DE58908680D1 (fr)
ES (1) ES2064427T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434259A1 (fr) * 1989-12-19 1991-06-26 Nomix-Chipman Limited Contrôle électronique de débit d'un fluide
DE10062761A1 (de) * 2000-12-13 2002-06-20 Siemens Ag Bewegbarer Kontaktträger zur Aufnahme von Kontakthebeln für Niederspannungs-Leistungsschalter
WO2002082481A1 (fr) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Ensemble contact de commutation pour un commutateur electrique
DE10222010C1 (de) * 2002-05-17 2003-11-20 Moeller Gmbh Leistungsschalter für hohe Ströme und Niederspannung
DE10222011C1 (de) * 2002-05-17 2003-11-20 Moeller Gmbh Leistungsschalter für hohe Ströme und Niederspannung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE828415C (de) * 1949-07-05 1952-01-17 Peterreins & Co K G Elektrischer Schalter
US3073927A (en) * 1959-10-16 1963-01-15 Westinghouse Electric Corp Circuit breakers
DE1154553B (de) * 1961-06-27 1963-09-19 Licentia Gmbh Kontakttraeger mit beweglichen Kontakten, z. B. bei elektrischen Leistungsschaltern
US3422381A (en) * 1966-02-16 1969-01-14 Westinghouse Electric Corp Multi-pole circuit breaker with common trip bar
US3657723A (en) * 1970-04-09 1972-04-18 Square D Co Segmented insulator for contact blade drive bar of a manual switch
US3946346A (en) * 1974-04-29 1976-03-23 Square D Company Current limiting circuit breaker
US4137437A (en) * 1977-06-03 1979-01-30 Westinghouse Electric Corp. Circuit breaker having improved movable crossbar and spring holder
DE2757696C2 (de) * 1977-12-22 1984-10-04 Siemens AG, 1000 Berlin und 8000 München Mehrpoliger Niederspannungs-Leistungsschalter mit einer Kontaktarme tragenden Schaltwelle
US4227161A (en) * 1978-10-16 1980-10-07 Westinghouse Electric Corp. Current limiting circuit breaker with pivoting contact arm
FR2484136A1 (fr) * 1980-06-06 1981-12-11 Merlin Gerin Contacts electriques perfectionnes pour disjoncteurs multipolaires a basse tension et procede de fabrication des contacts
US4524339A (en) * 1983-05-09 1985-06-18 Square D Company Contact control arrangement for high amperage molded case circuit breaker
JPS60175335A (ja) * 1984-02-20 1985-09-09 富士電機株式会社 回路遮断器
US4642431A (en) * 1985-07-18 1987-02-10 Westinghouse Electric Corp. Molded case circuit breaker with a movable electrical contact positioned by a camming spring loaded clip

Also Published As

Publication number Publication date
CA1330818C (fr) 1994-07-19
US4866225A (en) 1989-09-12
ES2064427T3 (es) 1995-02-01
EP0358287A3 (fr) 1991-11-06
DE58908680D1 (de) 1995-01-12
JPH02117023A (ja) 1990-05-01
EP0358287A2 (fr) 1990-03-14

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