EP0650179A1 - Déclencheur thermique de surintensité pour un appareil de commutation électrique - Google Patents

Déclencheur thermique de surintensité pour un appareil de commutation électrique Download PDF

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Publication number
EP0650179A1
EP0650179A1 EP94116279A EP94116279A EP0650179A1 EP 0650179 A1 EP0650179 A1 EP 0650179A1 EP 94116279 A EP94116279 A EP 94116279A EP 94116279 A EP94116279 A EP 94116279A EP 0650179 A1 EP0650179 A1 EP 0650179A1
Authority
EP
European Patent Office
Prior art keywords
carrier
snap disc
snap
trigger according
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.)
Withdrawn
Application number
EP94116279A
Other languages
German (de)
English (en)
Inventor
Karl Bernauer
Gerhard Mössner
Heinz Dr. Popa
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 EP0650179A1 publication Critical patent/EP0650179A1/fr
Withdrawn legal-status Critical Current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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/02—Electrothermal relays wherein the thermally-sensitive member is heated indirectly, e.g. resistively, inductively

Definitions

  • the invention relates to a thermal overcurrent release for an electrical switching device according to the preamble of claim 1.
  • a thermal release of the type mentioned is known from DE-PS 36 27 275, according to which a snap disk designed as a bimetallic metal is accommodated in a housing associated with a magnetic release and spatially and thermally coupled to it.
  • the snap disk is heated indirectly, which has the disadvantage that the time delay is very large.
  • a heat paste is provided, in particular in the practical embodiment of the subject of the cited patent specification, between the heat-generating and heat-dissipating parts, in particular between the coil former and the coil, in order to transfer heat from the coil to the coil former and thus to improve the snap disk.
  • the object of the invention is to provide a thermal release of the type mentioned, in which the problems of heat transfer are better solved.
  • the snap disk is located in the region of a carrier through which the current flows, its side, which is convexly rounded in the non-triggered operation, abutting against the carrier.
  • the carrier is a substantially flat cross member on which two L-shaped hooks are provided which cover the edges of the snap disk and hold the snap disk on the support.
  • a holding element can also be provided which covers the snap disk and, if necessary, presses against the carrier.
  • the carrier thus forms an essentially closed cavity together with the holding element.
  • the carrier can have a recess corresponding to the convex side of the snap disk, into which the snap disk lies with its convex side.
  • the carrier and / or the holding element can be designed as a heating conductor.
  • the snap disk does not only have to be circular; it can of course also be polygonal, in particular square.
  • a bimetallic snap disk 11 is placed on a carrier designed as an elongate crossmember, with its convex side 12 being directed towards the carrier.
  • Two or possibly several approximately L-shaped or hook-shaped hooks 13 and 14 are punched out of the carrier 10 and, with latches 15 and 16, encompass the edge of the snap disk 11 and hold the snap disk on the carrier.
  • the carrier is made of electrically highly conductive material and in particular of a heating conductor, so that the current I flowing through it sufficiently heats the bimetal 11 or the snap disk 11.
  • the carrier 20 has a recess 21 which has a radius R which corresponds to the radius R1 of the snap disc 11, so that when the snap disc 11 is inserted into the recess 21, the convex side 12 of the snap disc 11 touches the inner surface 22 practically completely.
  • the heat transfer from the carrier 10 to the snap disk 11 only in one due to the convexity predetermined, relatively small area
  • the heat transfer from the depression 21 via the surface 22 and the surface 12 to the snap disk 11 can take place on the entire snap disk surface 12.
  • the time delay between the increased current I through the carrier and the heating of the snap disk 11 is considerably reduced compared to the embodiment according to FIG.
  • a holder 23 which has opposite ends 24 and 25 flanges with which the holder 23 can be fastened to the carrier 20 by means of screw connections 26 and 27 or rivet connections or the like.
  • the holder also has a spherical cap-like shape like the recess 21, so that an approximately oval cavity 28 is formed between the carrier 20 in the region of the recess 21 and the holder 23, in which the snap disc 11 is located.

Landscapes

  • Thermally Actuated Switches (AREA)
EP94116279A 1993-10-22 1994-10-15 Déclencheur thermique de surintensité pour un appareil de commutation électrique Withdrawn EP0650179A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934336073 DE4336073A1 (de) 1993-10-22 1993-10-22 Thermischer Überstromauslöser für ein elektrisches Schaltgerät
DE4336073 1993-10-22

Publications (1)

Publication Number Publication Date
EP0650179A1 true EP0650179A1 (fr) 1995-04-26

Family

ID=6500768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116279A Withdrawn EP0650179A1 (fr) 1993-10-22 1994-10-15 Déclencheur thermique de surintensité pour un appareil de commutation électrique

Country Status (2)

Country Link
EP (1) EP0650179A1 (fr)
DE (1) DE4336073A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772980A1 (fr) * 1997-12-19 1999-06-25 Schneider Electric Sa Dispositif de declenchement magneto-thermique et disjoncteur equipe de ce dispositif
EP1041596A2 (fr) * 1999-03-30 2000-10-04 Heinrich Kopp Ag Dispositif de déclenchement thermique pour disjoncteur
DE202013007062U1 (de) 2013-08-07 2014-11-12 Leoni Bordnetz-Systeme Gmbh Vorrichtung zur mechanischen Verriegelung eines Ladesteckers in einer Ladedose

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259763A (en) * 1962-12-04 1966-07-05 Texas Instruments Inc Thermally responsive control means
DE1236655B (de) * 1962-05-21 1967-03-16 Martin Hornig Mikrothermorelais
US3852695A (en) * 1973-04-09 1974-12-03 L Northrup Electrical switching system
DE2709175A1 (de) * 1977-03-03 1978-09-07 Inter Control Koehler Hermann Thermostat-kombination
DE3637275C1 (en) * 1986-11-03 1988-05-05 Flohr Peter Overcurrent trip device for protection switching apparatuses

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE588077C (de) * 1933-11-13 Voigt & Haeffner Akt Ges Thermisches Relais mit einer als Waermeglied dienenden, nicht abwickelbaren Scheibe aus Bimetall
DE1033308B (de) * 1956-09-11 1958-07-03 Licentia Gmbh Elektrischer Klein-Thermoschalter
US4088976A (en) * 1975-10-14 1978-05-09 Technar, Inc. Thermally operated bimetal actuator
DE2701884A1 (de) * 1976-01-19 1977-07-21 Delta Materials Research Ltd Stromueberlastungsschutz
JPS5582893A (en) * 1978-12-14 1980-06-21 Miyawaki Steam Trap Mfg Bimetal column
YU46294B (sh) * 1985-04-12 1993-05-28 Zdarilek, Branko Termostrujni zaštitnik sa automatskim djelovanjem
KR940002671B1 (ko) * 1990-04-06 1994-03-28 가부시끼가이샤 히다찌세이사꾸쇼 과부하 보호장치
DE4142965A1 (de) * 1991-12-24 1993-07-01 Abb Patent Gmbh Thermischer ausloeser
DE4224046C2 (de) * 1992-07-21 1994-07-07 Elektroelement Izlake D D Überstromauslöser für Schutzschaltgeräte

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236655B (de) * 1962-05-21 1967-03-16 Martin Hornig Mikrothermorelais
US3259763A (en) * 1962-12-04 1966-07-05 Texas Instruments Inc Thermally responsive control means
US3852695A (en) * 1973-04-09 1974-12-03 L Northrup Electrical switching system
DE2709175A1 (de) * 1977-03-03 1978-09-07 Inter Control Koehler Hermann Thermostat-kombination
DE3637275C1 (en) * 1986-11-03 1988-05-05 Flohr Peter Overcurrent trip device for protection switching apparatuses

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772980A1 (fr) * 1997-12-19 1999-06-25 Schneider Electric Sa Dispositif de declenchement magneto-thermique et disjoncteur equipe de ce dispositif
EP0926694A1 (fr) * 1997-12-19 1999-06-30 Schneider Electric Sa Dispositif de déclenchement magnéto-thermique et disjoncteur équipé de ce dispositif
EP1041596A2 (fr) * 1999-03-30 2000-10-04 Heinrich Kopp Ag Dispositif de déclenchement thermique pour disjoncteur
EP1041596A3 (fr) * 1999-03-30 2002-01-16 Heinrich Kopp Ag Dispositif de déclenchement thermique pour disjoncteur
DE202013007062U1 (de) 2013-08-07 2014-11-12 Leoni Bordnetz-Systeme Gmbh Vorrichtung zur mechanischen Verriegelung eines Ladesteckers in einer Ladedose

Also Published As

Publication number Publication date
DE4336073A1 (de) 1995-04-27

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