EP0977232A2 - Teilgehäuse für Leiter in Schutzschaltern - Google Patents

Teilgehäuse für Leiter in Schutzschaltern Download PDF

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Publication number
EP0977232A2
EP0977232A2 EP99114345A EP99114345A EP0977232A2 EP 0977232 A2 EP0977232 A2 EP 0977232A2 EP 99114345 A EP99114345 A EP 99114345A EP 99114345 A EP99114345 A EP 99114345A EP 0977232 A2 EP0977232 A2 EP 0977232A2
Authority
EP
European Patent Office
Prior art keywords
housing
circuit interrupter
combination
sub
conductor
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.)
Withdrawn
Application number
EP99114345A
Other languages
English (en)
French (fr)
Other versions
EP0977232A3 (de
Inventor
Lance Gula
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.)
Eaton Corp
Original Assignee
Eaton Corp
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 Eaton Corp filed Critical Eaton Corp
Publication of EP0977232A2 publication Critical patent/EP0977232A2/de
Publication of EP0977232A3 publication Critical patent/EP0977232A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/107—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops
    • H01H77/108—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops comprising magnetisable elements, e.g. flux concentrator, linear slot motor

Definitions

  • the subject matter of this invention is related to molded case circuit breakers, generally and in particular to plug-in sub housings for the stationary contact and associated terminal thereof.
  • Molded case circuit breakers have been know in the art for a long period of time.
  • An example of a molded case circuit breaker may be found in U.S. Patent 4,642,431 entitled "Molded Case Circuit Breaker With A Movable Electrical Contact Positioned by a Camming Spring Loaded Clip” issued February 10, 1987 to Tedesco et al., assigned to the assignee of the present inventions and incorporated by reference herein.
  • Molded case circuit breakers in most instances have stationary contacts and moveable contacts. The moveable contact when actuated by an appropriate operating mechanism or trip mechanism within the circuit breaker housing either closes upon or separates respectively from the stationary or fixed contact.
  • the stationary contact is usually connected by way of a u-shaped contact arm with an electrical terminal to which the load which is protected by the circuit breaker is externally connected.
  • the stationary contact and its associated load terminal and stationary contact arm comprise a one piece member which is inserted into the circuit breaker case during the manufacturing process. An example of such an arrangement may be found in the '431 patent.
  • a contact arm accelerator slot motor arrangement may also be provided which surrounds the region of the fixed and moveable contact arms, such that electromagnetic flux, which is induced into the slot motor, interacts with the metallic moveable contact arm during the circuit interrupter opening operation to accelerate the opening movement of the contact arm.
  • Patent 3,815,059 entitled “Circuit Interrupter Comprising Electromagnetic Opening Means” issued June 4, 1974 to Spoelman which is also assigned to the assignee of the present invention.
  • the slot motor which includes an enclosed magnetic path, is formed from an upper u-shaped member joined or abutted in a face-to-face arrangement with a lower u-shaped member.
  • the lower u-shaped member may be placed in the bite piece or crook of an insulating u-shaped member which surrounds the contact arm for the stationary contact.
  • a molded case circuit interrupter which includes a main housing having one portion therein for assisting in capturing a portion of an conductor means.
  • the main housing has also disposed therein a circuit interrupter operating means.
  • Separable contacts one fixed and one movable, are disposed within the circuit interrupter housing and operated by the circuit interrupter operating device for opening and closing the separable contacts.
  • a terminal is interconnected with the fixed contact by way of a portion of the aforementioned conductor.
  • a separate housing sub member which is insertable into cooperation with the main housing and in cooperation with the conducting member and the housing member is provided for capturing the latter mentioned conductor portion between the sub member and the mentioned portion of the main housing.
  • FIG. 1 and Figure 2 depict a molded case circuit breaker 10 embodying the teachings of the present invention.
  • Molded case circuit breaker 10 includes as part thereof a lower base portion 14. There is also an upper base portion (not shown). In some embodiments of the invention a secondary cover (also not shown) may also be utilized on the upper base portion.
  • the upper base portion is shown in the '431 incorporated-by-reference U.S. patent.
  • the slot motor assembly 54 may be similar to that shown in the '059 incorporated-by-reference U.S. patent. Basically, the slot motor assembly 54 includes a set of slot motor upper assembly plates 74 disposed upon a mandrel 75.
  • the arc extinguisher assembly 58A includes an arc chute 80A having parallel disposed arc chute plates 84A and an upper arc runner 84B.
  • the arc chute-assembly 58A is disposed in the arc chute groove 104 in base 14 as depicted in Figure 2 and is prevented from further downward movement therein by the abutment of a knee 108 therein onto a plateau 106 in the lower base portion 14.
  • upper support member 110 which is disposed between the upper most portion of the lower base portion 14 and the lower most portion of the lower based portion 14.
  • Upper support member 110 includes an upper support member slanted region 120 and an upper support member flat region 122, both of which protrude or reflect towards the bottom portion of the lower base portion 14.
  • a clearance region 124 is also provided.
  • the thusly constructed upper support member 110 forms beneath it a terminal support region 116 adjacent the bottom surface thereof on the left as viewed in the figures and a lower slot motor chamber 130 adjacent the bottom surface thereof on right.
  • Wall 115 has a small transverse opening 112 therein through which terminal 71 snugly protrudes after assembly of the entire arrangement has been completed.
  • a contact support insert member or plug-in sub-housing 132 which comprises a lower support member wall 134, side wall arrangement 144, lower slot motor groove 100A, and flat lower slot motor support surface 138.
  • a slanted lower support member surface 136 which is complimentary to the lower surface of the aforementioned slanted upper slot motor slanted region 120, is provided in the insert member 132.
  • a lower slot motor stationary contact line terminal assembly 131 which may nest or rest in the contact support insert member 132 to be lifted into a position of snug fit within the lower base portion 14 of the molded case circuit breaker 10.
  • the slanted lower slot motor surface 136 rest against the bottom of the slanted contact portion 126 which then presses upwardly against the bottom of the upper slot motor slanted region 120.
  • the bottom of the flat upward slot motor region 122 cooperates with flat lower slot motor support surface 138 to snugly secure the lower flat contact portion 128 therebetween.
  • the lower slot motor assembly 246 is complimentary with the upper portion of the slot motor assembly 54.
  • the lower slot motor assembly plates 78 cooperate with the upper slot motor assembly plates 74 to form parallel, complete magnetic circuits around the region of the separating main contacts.
  • the lower slot motor assembly 246 is disposed within the bite portion or u-shaped portion of the conductor which includes the lower flat contact portion 128 on the bottom and the stationary contact arm 68 on the top.
  • the stationary contact 64 for the circuit breaker is disposed at the end of the stationary contact arm 68.
  • Figure 1 shows all of the aforementioned separate components joined together within the lower base portion 14 to form a completed arrangement.
  • the stationary contact 64 the stationary contact arm 68, the lower flat contact portion 128, the slanted contact portion 126 and the line terminal 71.
  • the slot motor assembly 54 is made complete by the insertion of the slot motor upper assembly plates 74 onto the mandrel 75 in the groove 100 for mating up with the lower slot motor assembly 246 and the lower slot motor assembly plates 78.
  • the conductor is 131 completely and securely disposed within the circuit interrupter 10 and is bounded on the top by the upper support member 110 and on the bottom by the contact support plug-in insert member 132.
  • FIG. 4 an orthogonal view of the main circuit breaker lower base portion 14 and the separated contact support plug-in, sub-housing member 132 is depicted.
  • the lower slot motor assembly region 130 and the terminal support region 116 are clearly shown.
  • the flat lower surface of the upper support member 122 and the slanted lower surface 120 thereof are depicted.
  • the holes or openings 112 for insertion of the terminal portion 71 therethrough from the terminal support region 116 to the terminal chamber 114 through the wall 115 is depicted.
  • screws or mounting members 140 are shown for insertion into the openings 142A in the lower base portion 14 to hold the member 132 in place.

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP99114345A 1998-07-28 1999-07-21 Teilgehäuse für Leiter in Schutzschaltern Withdrawn EP0977232A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12327598A 1998-07-28 1998-07-28
US123275 1998-07-28

Publications (2)

Publication Number Publication Date
EP0977232A2 true EP0977232A2 (de) 2000-02-02
EP0977232A3 EP0977232A3 (de) 2001-03-21

Family

ID=22407713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114345A Withdrawn EP0977232A3 (de) 1998-07-28 1999-07-21 Teilgehäuse für Leiter in Schutzschaltern

Country Status (3)

Country Link
EP (1) EP0977232A3 (de)
CA (1) CA2279056A1 (de)
ID (1) ID23709A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249849A1 (de) * 2001-04-12 2002-10-16 Schneider Electric Industries SAS Elektromagnetischer Schalter mit Kontaktträgerkassetten
EP1261008A1 (de) * 2001-05-22 2002-11-27 Gewiss S.P.A. Gekapselter thermomagnetischer Schutzschalter
EP1677329A2 (de) * 2004-12-30 2006-07-05 ABB Service S.r.l Elektrisches Gerät mit festen Kontakten, beweglichen Kontakten und kontrolierbaren Löschkammern

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2174669A (en) * 1938-04-15 1939-10-03 Colt S Mfg Co Automatic circuit breaker assembly
US4377795A (en) * 1979-11-05 1983-03-22 Square D Company Circuit breaker with snap action magnetic trip actuator
US5218332A (en) * 1991-02-28 1993-06-08 Telemecanique Switch device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2174669A (en) * 1938-04-15 1939-10-03 Colt S Mfg Co Automatic circuit breaker assembly
US4377795A (en) * 1979-11-05 1983-03-22 Square D Company Circuit breaker with snap action magnetic trip actuator
US5218332A (en) * 1991-02-28 1993-06-08 Telemecanique Switch device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249849A1 (de) * 2001-04-12 2002-10-16 Schneider Electric Industries SAS Elektromagnetischer Schalter mit Kontaktträgerkassetten
FR2823595A1 (fr) * 2001-04-12 2002-10-18 Schneider Electric Ind Sa Appareil interrupteur electromagnetique a cassettes porte-contacts
EP1261008A1 (de) * 2001-05-22 2002-11-27 Gewiss S.P.A. Gekapselter thermomagnetischer Schutzschalter
EP1677329A2 (de) * 2004-12-30 2006-07-05 ABB Service S.r.l Elektrisches Gerät mit festen Kontakten, beweglichen Kontakten und kontrolierbaren Löschkammern
EP1677329A3 (de) * 2004-12-30 2007-08-15 ABB Service S.r.l Elektrisches Gerät mit festen Kontakten, beweglichen Kontakten und kontrolierbaren Löschkammern
CN1797639B (zh) * 2004-12-30 2010-05-05 Abb股份公司 具有固定触点、移动触点和可检查的弧形腔室的电气装置

Also Published As

Publication number Publication date
CA2279056A1 (en) 2000-01-28
ID23709A (id) 2000-05-11
EP0977232A3 (de) 2001-03-21

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