EP1296340B1 - Couvercle pour des pinces d'interconnexion d'un appareil de commutation électrique polyphase - Google Patents

Couvercle pour des pinces d'interconnexion d'un appareil de commutation électrique polyphase Download PDF

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Publication number
EP1296340B1
EP1296340B1 EP01126643A EP01126643A EP1296340B1 EP 1296340 B1 EP1296340 B1 EP 1296340B1 EP 01126643 A EP01126643 A EP 01126643A EP 01126643 A EP01126643 A EP 01126643A EP 1296340 B1 EP1296340 B1 EP 1296340B1
Authority
EP
European Patent Office
Prior art keywords
terminal cover
insulating case
leading
connecting terminals
switching device
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
EP01126643A
Other languages
German (de)
English (en)
Other versions
EP1296340A1 (fr
Inventor
Willy Feller
Hans-Jürgen Dr. Haars
Patrik Kalt
Sandro Liberto
Hans Dr. Weichert
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Rockwell Automation 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 Rockwell Automation AG filed Critical Rockwell Automation AG
Publication of EP1296340A1 publication Critical patent/EP1296340A1/fr
Application granted granted Critical
Publication of EP1296340B1 publication Critical patent/EP1296340B1/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
    • 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
    • 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
    • H01H73/20—Terminals; Connections
    • 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
    • H01H2071/0242—Assembling parts of a circuit breaker by using snap mounting techniques
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate

Definitions

  • the present invention relates to a terminal cover for the terminals of a polyphase electrical switching device with in a common housing for all phases insulating material of the switching device mounted electrical terminals, which are used for the attachment of electrical lines in the terminals, perpendicular to the lines of the surface of the Isolierstoffgeophuses are equipped with recesses accessible clamping screws.
  • cover device for securing terminals of electrical installation devices.
  • the cover device is approximately L-shaped in cross section. This cover is held with at least one behind projections or recesses on the installation device cross resilient nose on the installation device. This cover device serves as protection against contact for the terminals and does not increase the dielectric strength between the terminals of adjacent phases of the installation device.
  • the object of the present invention is to propose a terminal cover for the terminals of a polyphase electrical switching device, which causes the increase of the dielectric strength between the terminals of adjacent phases of the switching device and so meets the requirements of the various standards, e.g. The US standard UL508, in terms of dielectric strength between adjacent terminals of an electrical switching device corresponds and is economically advantageous.
  • Terminal cover closely abuts on its side facing the insulating material in the edge region of the leading to the terminal connection openings on the insulating housing with a negligible air gap that the terminal cover is provided on its surface facing away from the insulating material between the cap openings leading to the terminals with protruding, the necessary Kriechweg securing ribs.
  • Various standards require testing the dielectric strength between the adjacent terminals of an electrical switching device.
  • the terminal cover can be permanently attached to the finished switching device before connecting the electrical lines by snap connections.
  • Various standards require that a terminal cover on the insulating housing must be permanently attached. This is achieved by the intended, non-releasable snap connections.
  • the terminal cover advantageously has, on its side facing the insulating housing, at least one holding extension engaging behind the insulating housing and at least one snap-action nose engaging behind a projection of the insulating housing. This arrangement allows the permanent attachment of the terminal cover on the insulating material without screw, which is particularly advantageous for relatively small switching devices.
  • the L-shaped terminal cover cap can be screwed in the region of the recesses leading to the terminals on the insulating housing and with the leg perpendicular thereto on the insulating housing with at least one be on the insulating housing engaging behind retaining stop and secured with at least one engaging on a projection of the insulating housing snap-action nose.
  • the snap-on nose acting on the insulating housing secures the permanent attachment of the terminal cover cap to the insulating housing.
  • the terminal cover cap may have separating recesses projecting into the cavity of the recesses leading to the terminals of adjacent phases.
  • the dividing extensions engaging in the cavity of the recesses leading to the terminals serve as an electrical barrier and increase the limit of the minimum test voltage required for the switching device.
  • FIG 1 a relatively small electrical switching device is shown in perspective.
  • the switching device with switching contact pieces, contact actuating mechanism and terminals is housed in an insulating material 1.
  • the unillustrated electrical lines can be inserted through the connection openings 5, 6, 7 to the terminals.
  • the measures provided for fixing the electrical wires in the terminals, perpendicular to the lines clamping screws are accessible from the surface of the insulating housing 1 through the recesses 2, 3, 4.
  • the leakage path between the terminals on the surface of the insulating material is insufficient to maintain the test voltage prescribed in various standards. That brings in the Figures 2, 3 and 4 shown terminal cover 8 remedy.
  • FIGS. 2 and 3 show the terminal cover 8 from the side facing away from the insulating material 1 side.
  • FIGS. 2 and 3 show the terminal cover 8 from the side facing away from the insulating material 1 side.
  • the through the recesses 5, 6, 7 leading to the terminals not shown recesses 9, 10, 11 and between the well visible in Figure 4 cap openings 12, 13, 14 lying, multi-layered ribs 15, 16 are good recognizable.
  • the two side ribs 17, 18 increase the creepage distance to the outer terminals of an adjacent switching device, not shown, and form the lateral termination of the terminal cover cap eighth
  • the L-shaped, attached to the switching device terminal cover 8 extends with its one leg on the leading to the clamping screws recesses 2, 3, 4 and with the other leg on the connection terminals leading to the connection openings 5, 6, 7.
  • Fig. 4 shows two retaining extensions 19, 20, which are introduced during assembly of the terminal cover 8 on the switching device in the mounted in the insulating housing 1 holding openings 21.
  • the visible in Figure 4 snap-on nose 22 at the end of a groove lying projection 23 of the insulating 1 and ensures a permanent connection between the terminal cover 8 and the insulating 1.
  • This permanent connection is prescribed in various standards ,
  • the terminal cover 8 is located with the insulating housing 1 facing edge portions of the cap openings 9, 10, 11 at the edge regions of the connection openings 5, 6, 7 of the insulating material 1 closely. These tight around the connection openings 5, 6, 7 adjacent parts of the terminal cover 8 increase the electrical resistance between the terminals of the electrical device detectable, so that the required in the various provisions electrical resistance between the terminals of an electrical switching device using the terminal cover 8 is reached ,
  • Trennfort systems 24 are formed on the terminal cover, which protrude into the existing in the insulating 1 recesses 5, 6, 7 and so contribute to Kriechwegverinrung.
  • the Dividing extensions 24 may have different shapes and correspondingly protrude into only a part or the entire circumference of the recesses 5, 6, 7 in this.
  • the terminal cover 32 shown in FIGS. 6, 7 and 8 is intended for a larger switching device.
  • the basic arrangement is similar to what has been described previously for a smaller switching device.
  • the most important difference between the two arrangements is that in this arrangement, the terminal cover 32 is secured to the insulating housing 25 not only by a snap connection but also by a screw connection.
  • the insulating housing 25 in Fig.5 also encloses the switching contact pieces, the contact actuating mechanism and the terminals.
  • the electrical lines, not shown, are inserted through the connection openings 29, 30, 31 to the terminals and clamped there with the accessible through the recesses 26, 27, 28 clamping screws. With the help of the terminal cover 32, the electrical strength between the terminals is increased even with this arrangement.
  • FIG. 8 shows this terminal cover cap 32 from the side facing the insulating housing 25. 8 shows the cap openings 50, 51, 52 serving to supply the electrical lines to the terminals.
  • the terminal cover cap 32 is shown from the side facing away from the insulating housing.
  • the protruding ribs 36, 37 which serve to extend the creepage distance between adjacent terminals and thus to increase the electrical strength.
  • the lateral end ribs 38,39 are also clearly visible.
  • the L-shaped, attached to the switching device terminal cover 32 extends with its one leg on the connection terminals leading to the terminal openings 29, 30, 31. This leg is screwed when mounting the terminal cover 32 with the screws 40 on the insulating housing 25. This leg carries on its side facing the insulating material 25 side two retaining stops 41, 42, which in the assembly in the two on the insulating housing 25 integrally formed nips 43, 44 engage. When mounting the terminal cover 32 this is pressed after introduction of the retaining stops 41, 42 in the nips 43, 44 in the direction of arrow 49 on the Isolierstoffgepuruse 25 until the molded on the inside of the other leg of the L-shaped terminal cover 32 snap-in nose 45 behind the on End of a groove lying projection 46 engages. This snap connection secures the permanent connection between the terminal cover tape 32 and the insulating housing 25. To secure the terminal cover cap 32, the screws 40 which hold the terminal cover cap 32 on the insulating housing 25 serve.
  • the Klemmabdeckkappe 32 is with the insulating material 25 facing edge portions of the cap openings 50, 51, 52 at the edge regions of the connection openings 29, 30, 31 of the insulating housing 25 close.
  • the close-fitting Isolierstoffmaschine increase between the terminals of the electrical switching device, the electrical resistance in comparison with the electrical strength without terminal cover cap 32nd
  • the provided with a positioning pin arm 47 of the terminal cover 32 serves only as an assembly aid.
  • terminal cover caps 8 and 32 can be mounted on both connection sides of a symmetrically designed, electrical switching device.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Motor Or Generator Frames (AREA)

Claims (5)

  1. Couvercle de bornes (8, 32) pour les bornes de connexion d'un commutateur électrique polyphasé avec des bornes de connexion électriques logées dans un boîtier en matériau isolant (1, 25) commun pour toutes les phases, lesquelles sont pourvues de vis de serrage servant à la fixation de lignes électriques dans les bornes de connexion, perpendiculaires aux lignes et accessibles depuis la surface du boîtier en matériau isolant (1, 25) par des évidements (2, 3, 4, 26, 27, 28), caractérisé en ce que pour garantir la tenue électrique entre les bornes de fixation de phases contiguës, le couvercle de bornes (8, 32) en forme de L, s'étendant par une première branche au-dessus des évidements (2, 3, 4, 26, 27, 28) menant aux vis de serrage et par l'autre branche au-dessus des orifices de connexion (5, 6, 7, 29, 30, 31) menant aux bornes de connexion, repose étroitement par son côté tourné vers le boîtier en matériau isolant (1, 25) contre la zone de bordure des orifices de connexion (5, 6, 7, 29, 30, 31) menant aux bornes de connexion, avec un interstice de grandeur négligeable, et en ce que le couvercle de bornes (8, 32) est pourvu de nervures (15, 16, 36, 37) fixant le cheminement exigé sur sa surface opposée au boîtier en matériau isolant (1, 25), entre les orifices de couvercle (9, 10, 11, 50, 51, 52) menant aux bornes de connexion.
  2. Couvercle de bornes selon la revendication 1, caractérisé en ce que le couvercle de bornes (8, 32) est monté de manière inamovible par des assemblages par encliquetage sur le commutateur fini avant la connexion des lignes électriques.
  3. Couvercle de bornes selon l'une des revendications 1 ou 2, caractérisé en ce que le couvercle de bornes (8) comporte sur son côté tourné vers le boîtier en matériau isolant (1) au moins une saillie de maintien (19, 20) dans le boîtier en matériau isolant (1) et au moins un taquet d'encliquetage (22) s'enclenchant sur une projection (23) du boîtier en matériau isolant (1).
  4. Couvercle de bornes selon l'une des revendications 1 ou 2, caractérisé en ce que le couvercle de bornes (32) en forme de L est vissé sur le boîtier en matériau isolant (25) au niveau des évidements (29, 30, 31) menant aux bornes de connexion et est fixé sur le boîtier en matériau isolant (25) par la branche perpendiculaire à la branche vissée, par au moins une saillie de maintien (41, 42) s'enclenchant sur le boîtier en matériau isolant (25) et par au moins un taquet d'encliquetage (45) s'enclenchant sur une projection (46) du boîtier en matériau isolant (25).
  5. Couvercle de bornes selon l'une des revendications 1 à 4, caractérisé en ce que le couvercle de bornes (8) comporte des saillies de séparation (24) dirigées vers l'intérieur dans la cavité des évidements (5, 6, 7) menant aux phases contiguës aux bornes de connexion.
EP01126643A 2001-09-24 2001-11-08 Couvercle pour des pinces d'interconnexion d'un appareil de commutation électrique polyphase Expired - Lifetime EP1296340B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01759/01A CH695404A5 (de) 2001-09-24 2001-09-24 Klemmenabdeckkappe für die Anschlussklemmen eines mehrphasigen elektrischen Schaltgerätes.
CH17592001 2001-09-24

Publications (2)

Publication Number Publication Date
EP1296340A1 EP1296340A1 (fr) 2003-03-26
EP1296340B1 true EP1296340B1 (fr) 2007-03-07

Family

ID=4566168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01126643A Expired - Lifetime EP1296340B1 (fr) 2001-09-24 2001-11-08 Couvercle pour des pinces d'interconnexion d'un appareil de commutation électrique polyphase

Country Status (6)

Country Link
US (1) US6767242B2 (fr)
EP (1) EP1296340B1 (fr)
JP (1) JP2003178636A (fr)
AT (1) ATE356417T1 (fr)
CH (1) CH695404A5 (fr)
DE (1) DE50112163D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4492210B2 (ja) 2004-05-19 2010-06-30 富士電機機器制御株式会社 回路遮断器および端子カバー
US8169283B2 (en) * 2010-03-03 2012-05-01 Schneider Electric USA, Inc. Circuit breaker trip unit support
DE102010032522A1 (de) 2010-07-28 2012-02-02 Siemens Aktiengesellschaft Klemmanordnung für einen Leistungsschalter in Federzugtechnik
DE102011082191B4 (de) * 2011-09-06 2021-06-24 Siemens Aktiengesellschaft Isolationsvorrichtung, Schutzschaltgerät und Sammelschienen-verbund
JP5910243B2 (ja) * 2012-03-29 2016-04-27 ブラザー工業株式会社 工作機械用制御装置
CN103745886B (zh) * 2014-01-14 2015-11-25 德力西电气有限公司 一种增加接触器绝缘性能的防护罩及外壳结构
JP6468067B2 (ja) * 2015-05-13 2019-02-13 三菱電機株式会社 端子カバーおよび開閉装置
FR3039008B1 (fr) * 2015-07-16 2019-06-14 Safran Electrical & Power Dispositif de connexion electrique raccordable a plusieurs cables avec protection contre les dommages par corps etrangers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042029A1 (de) * 1980-11-07 1982-06-16 Brown, Boveri & Cie Ag, 6800 Mannheim Abdeckvorrichtung zur sicherung von anschlussklemmen von elektrischen installationsgeraeten
GB2099631B (en) * 1981-04-15 1985-04-03 Mitsubishi Electric Corp Electric circuit breaker with a terminal cover
DE3536213A1 (de) * 1985-10-10 1987-04-16 Siemens Ag Sicherungslasttrennschalter
DE3608535C1 (en) * 1986-03-14 1987-05-14 Wieland Elek Sche Ind Gmbh F Electrical terminal block having a name-plate support
MX9307660A (es) * 1992-12-03 1994-08-31 Communications Tech Corp Bloque terminal de desplazamiento con aislamiento sellado.
DE29505046U1 (de) * 1995-03-24 1996-07-18 Klöckner-Moeller GmbH, 53115 Bonn Niederspannungs-Schaltgerät mit Berührungsschutz
US5831498A (en) * 1997-04-30 1998-11-03 Eaton Corporation Molded case circuit breaker with adapter for use with ring lug terminations
JP3681576B2 (ja) * 1999-06-02 2005-08-10 矢崎総業株式会社 コネクタ用カバーの装着構造
US6325675B1 (en) * 2000-01-14 2001-12-04 Ilsco Corporation Electrical-connector insulating cover having a hinged access cover
US6238234B1 (en) * 2000-02-26 2001-05-29 Marconi Communications, Inc. Terminal block with reduced dielectric material

Also Published As

Publication number Publication date
US20030068923A1 (en) 2003-04-10
JP2003178636A (ja) 2003-06-27
EP1296340A1 (fr) 2003-03-26
CH695404A5 (de) 2006-04-28
DE50112163D1 (de) 2007-04-19
ATE356417T1 (de) 2007-03-15
US6767242B2 (en) 2004-07-27

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