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EP0902453B1 - Dispositif pour le réglage du déclencheur thermique, en particulier pour un disjoncteur de protection - Google Patents

Dispositif pour le réglage du déclencheur thermique, en particulier pour un disjoncteur de protection Download PDF

Info

Publication number
EP0902453B1
EP0902453B1 EP98113767A EP98113767A EP0902453B1 EP 0902453 B1 EP0902453 B1 EP 0902453B1 EP 98113767 A EP98113767 A EP 98113767A EP 98113767 A EP98113767 A EP 98113767A EP 0902453 B1 EP0902453 B1 EP 0902453B1
Authority
EP
European Patent Office
Prior art keywords
adjusting
screw
lever
circuit breaker
release
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
EP98113767A
Other languages
German (de)
English (en)
Other versions
EP0902453A2 (fr
EP0902453A3 (fr
Inventor
Rolf Dipl.-Ing. Goehle
Volker Schmitt
Klaus-Peter Dipl.-Ing. Eppe
Ralf Dipl.-Ing. Weber
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.)
ABB Patent GmbH
Original Assignee
ABB Patent 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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0902453A2 publication Critical patent/EP0902453A2/fr
Publication of EP0902453A3 publication Critical patent/EP0902453A3/fr
Application granted granted Critical
Publication of EP0902453B1 publication Critical patent/EP0902453B1/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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H2071/7454—Adjusting only the electrothermal mechanism with adjustable axis of transmission lever between bimetal element and trip lever

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • Circuit breaker used to shut down a network in case of overcurrent or short-circuit current serve have a thermal for tripping in an overcurrent Trigger, which is usually designed as a bimetallic strip. Because certain tolerances it is necessary after final assembly of the circuit breaker to adjust this. This is done in most cases in that the attachment point the bimetallic strip is deformed by means of an adjusting screw or the distance between the transmission lever or the transfer slider and the bimetallic strip adjusted by means of a screw mounted in the bimetal from the outside becomes.
  • the adjustment process is not reversible, d. H. not repeatable as often as desired while maintaining the same adjustment result, because certain plastic deformations are possible. If the distance between the Bimetallic and the transmission lever or trigger element is set, then will transmit a force to the bimetal via the screw, which influences the alignment constancy can.
  • the object of the invention is to provide a device of the type mentioned, a safe and constant thermal adjustment with low mounting and testing effort and allows the reversible and any number of times with the same Adjustment result is repeatable.
  • the screw is fixed immovably and rotatably guided. It is screwed in an adjusting lever, with the transmission lever or the Transmission slide is coupled, and by turning the screw and adjusting the adjusting lever, the distance between the transmission lever and the Verklinkungsstelle be adjusted in the switch lock.
  • a circuit breaker 10 In a circuit breaker 10 is an electromagnetic release 11 and a thermal release 12 shown in the form of a bimetallic strip.
  • the electromagnetic Trigger acts on the line of action via the line of action 13 and a striking pin 13a a switching mechanism 14, and the thermal release 12, the at a Fixed at the end of 15 transmits the movement of its free end 16 a transfer slide 17 which is linearly displaceable within a guide 18 is guided, also on the Verklinkungsstelle the switching mechanism 14, see below below.
  • the switching mechanism 14 is a contact lever 19th pivoted so that a contact point 20 is opened, which is in a cable 21 between two terminals 22 and 23 is located.
  • the electromagnetic release acts directly on the striking pin 13a the contact lever 19 and thus the contact point 20 a.
  • the device for adjusting the bimetallic strip 12 comprises a screw 23, the has a recess 24, about which they rotatable in a stationary holder 25 and is guided immovably.
  • the screw performs no translational relative movement during rotation Direction of its longitudinal axis based on the fixation in the holder 25 through, but is only rotated about its longitudinal axis.
  • the threaded portion 26 of the screw 23 is in an adjusting lever 27 is screwed, one end of which is mounted stationarily at 28 and the other end 29, which here has an L-shape, with the bimetallic strip 12 interacts.
  • the bimetal 12 Due to a current flow through the conduction path 21, the bimetal 12 is heated and bends counterclockwise with its free end towards the Transfer slide 17 off. About this slider it pivots the adjusting lever, which shifts the striker and hits the Verklinkungsstelle and the switch lock 14 unlatched.

Landscapes

  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Claims (1)

  1. Dispositif d'ajustage d'un déclencheur thermique (12), comprenant un verrou de maintien (14) pour l'ouverture constante d'un point de contact (20) d'un appareil de commutation d'installation 910), notamment d'un disjoncteur de protection, comprenant une vis (23) pour l'ajustage du déclencheur thermique (12) et un levier de transfert ou un coulisseau de transfert (17) pour le transfert du mouvement du déclencheur (12) au point de verrouillage du verrou de maintien (14), dans lequel la vis (23) est guidée de manière fixée en position, à rotation et sans glissement, caractérisé en ce que la vis (23) est vissée dans un levier d'ajustage (27) en forme de L, qui est accouplé au levier de transfert ou au coulisseau de transfert (17) ainsi qu'à la goupille de frappe (13a) d'un déclencheur électromagnétique (11), et en ce que la rotation de la vis (23) et par conséquent le réglage du levier d'ajustage (27) permettent d'ajuster l'espacement entre le déclencheur thermique (12) et le levier de transfert ou le coulisseau de transfert (17) et donc entre le déclencheur thermique (12) et le point de verrouillage dans le verrou de maintien (14).
EP98113767A 1997-09-11 1998-07-23 Dispositif pour le réglage du déclencheur thermique, en particulier pour un disjoncteur de protection Expired - Lifetime EP0902453B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19739821 1997-09-11
DE19739821A DE19739821A1 (de) 1997-09-11 1997-09-11 Vorrichtung zur Justierung eines thermischen Auslösers insbesondere für einen Leitungsschutzschalter

Publications (3)

Publication Number Publication Date
EP0902453A2 EP0902453A2 (fr) 1999-03-17
EP0902453A3 EP0902453A3 (fr) 1999-11-24
EP0902453B1 true EP0902453B1 (fr) 2005-11-23

Family

ID=7841927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113767A Expired - Lifetime EP0902453B1 (fr) 1997-09-11 1998-07-23 Dispositif pour le réglage du déclencheur thermique, en particulier pour un disjoncteur de protection

Country Status (3)

Country Link
EP (1) EP0902453B1 (fr)
AT (1) ATE311015T1 (fr)
DE (2) DE19739821A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19938965A1 (de) * 1999-08-17 2001-02-22 Abb Patent Gmbh Auslöseeinrichtung für einen elektrischen Installationsschalter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR669531A (fr) * 1928-02-13 1929-11-18 Schiele & Bruchsaler Ind Procédé et dispositif pour l'étalonnage et le réglage des disjoncteurs à surcharge
DE600061C (de) * 1928-02-24 1934-07-13 Schiele & Bruchsaleri Industri Eich- und Einstellvorrichtung fuer thermische Ausloeser von UEberstromschaltern
DE2717116C3 (de) * 1977-04-19 1981-03-26 Hundt & Weber Schaltgeräte GmbH, 57258 Freudenberg Mehrphasiger Schutzschalter mit thermischer Auslösung
DE3515297A1 (de) * 1985-04-27 1986-11-06 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Selbstschalter mit magnetischem und thermischem ausloeseorgan
FR2602910A1 (fr) * 1986-08-14 1988-02-19 Telemecanique Electrique Dispositif de reglage du courant thermique d'un declencheur thermique a bilame et interrupteur de protection comportant un tel dispositif

Also Published As

Publication number Publication date
ATE311015T1 (de) 2005-12-15
EP0902453A2 (fr) 1999-03-17
DE19739821A1 (de) 1999-03-18
EP0902453A3 (fr) 1999-11-24
DE59813214D1 (de) 2005-12-29

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