EP0902453A2 - 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

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Publication number
EP0902453A2
EP0902453A2 EP98113767A EP98113767A EP0902453A2 EP 0902453 A2 EP0902453 A2 EP 0902453A2 EP 98113767 A EP98113767 A EP 98113767A EP 98113767 A EP98113767 A EP 98113767A EP 0902453 A2 EP0902453 A2 EP 0902453A2
Authority
EP
European Patent Office
Prior art keywords
adjusting
screw
lever
slide
circuit breaker
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.)
Granted
Application number
EP98113767A
Other languages
German (de)
English (en)
Other versions
EP0902453A3 (fr
EP0902453B1 (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.
  • the adjustment process is not reversible, d. H. not repeatable any number of times with the same adjustment result, because certain plastic deformations are possible. If the distance between the Bimetal and the transmission lever or trigger element is set, then transmit a force to the bimetal via the screw, which affects the constancy of adjustment can.
  • the object of the invention is to provide a device of the type mentioned in the introduction, a safe and constant thermal adjustment with low assembly and enables technical testing effort and is reversible and as often as desired with the same Adjustment result is repeatable.
  • the screw is non-displaceably and rotatably guided. It is screwed into an adjusting lever that is connected to the transmission lever or the Transfer slide is coupled, and by turning the screw and adjusting the adjustment lever can be the distance between the transmission lever and the latching point be adjusted in the key switch.
  • a circuit breaker 10 In a circuit breaker 10 is an electromagnetic release 11 and thermal trigger 12 shown in the form of a thermal bimetal.
  • the electromagnetic The trigger acts via the line of action 13 and a striking pin 13a on the latching point a key switch 14, and the thermal trigger 12, the one End 15 is clamped stationary, transmits the movement of its free end 16 a transfer slide 17 which is linearly displaceable within a guide 18 is guided, also to the latching point of the key switch 14, see further below.
  • a contact lever 19 pivoted so that a contact point 20 is opened, which is in a cable run 21 is located between two terminals 22 and 23.
  • the electromagnetic trigger acts directly on the striking pin 13a the contact lever 19 and thus on the contact point 20.
  • the device for adjusting the bimetallic strip 12 comprises a screw 23 which has a recess 24, via which it can be rotated in a stationary holder 25 and is guided immovably.
  • the screw does not cause any translatory relative movement when turning Direction of its longitudinal axis based on the fixation in the holder 25, but will just rotated about its longitudinal axis.
  • the threaded portion 26 of the screw 23 is in screwed an adjusting lever 27, one end of which is fixed at 28 and the other end 29, which here has an L-shape, with the bimetal 12 cooperates.
  • the adjusting lever 27 is screw 27 pivoted clockwise about the fixed axis of rotation 28, whereby the free end 16 of the bimetallic metal 12 comes into contact with the slide 17.
  • the adjusting lever 27 moves the striking pin on the Latching point of the rear derailleur and unlatches it. From this point on the Screw 23 turned back a certain number of turns. Because of of the outside diameter and the pitch of the thread in the threaded section 26 can between the latching point in the switching mechanism 14, the striker 13a, the slide 17, the transmission lever 27 and the bimetallic 12 a certain Distance can be achieved; this particular distance defines the lead of the Thermobimetal 12 for thermal tripping.
  • the bimetal 12 heats up due to a current flow through the conduction path 21 and bends counterclockwise with its free end towards that Transfer slide 17 from. It pivots the adjustment lever over this slide, which moves the striker and hits the latch and the key switch 14 unlatched.

Landscapes

  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)
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 true EP0902453A2 (fr) 1999-03-17
EP0902453A3 EP0902453A3 (fr) 1999-11-24
EP0902453B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1077462A3 (fr) * 1999-08-17 2002-12-11 ABB PATENT GmbH Déclencheur pour un disjoncteur

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1077462A3 (fr) * 1999-08-17 2002-12-11 ABB PATENT GmbH Déclencheur pour un disjoncteur

Also Published As

Publication number Publication date
ATE311015T1 (de) 2005-12-15
DE59813214D1 (de) 2005-12-29
DE19739821A1 (de) 1999-03-18
EP0902453A3 (fr) 1999-11-24
EP0902453B1 (fr) 2005-11-23

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