EP1229565B1 - Procédé pour ajuster un déclencheur thermique d'un appareil de commutation électrique, en particulier un contacteur - Google Patents

Procédé pour ajuster un déclencheur thermique d'un appareil de commutation électrique, en particulier un contacteur Download PDF

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Publication number
EP1229565B1
EP1229565B1 EP20020000935 EP02000935A EP1229565B1 EP 1229565 B1 EP1229565 B1 EP 1229565B1 EP 20020000935 EP20020000935 EP 20020000935 EP 02000935 A EP02000935 A EP 02000935A EP 1229565 B1 EP1229565 B1 EP 1229565B1
Authority
EP
European Patent Office
Prior art keywords
adjusting
tripping
switching device
thermal trip
trip
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
EP20020000935
Other languages
German (de)
English (en)
Other versions
EP1229565A3 (fr
EP1229565A2 (fr
Inventor
Corell Dipl.-Ing. Göbel
Guido Dipl.-Ing. Niewöhner
Ralf Dipl.-Ing. Müller
Georgi Dipl.-Ing. Cwetanski
Jörg Ing. Stamm
Theo Thelen
Alois Becker
David Giedke
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 AG Germany
Original Assignee
ABB AG Germany
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 AG Germany filed Critical ABB AG Germany
Publication of EP1229565A2 publication Critical patent/EP1229565A2/fr
Publication of EP1229565A3 publication Critical patent/EP1229565A3/fr
Application granted granted Critical
Publication of EP1229565B1 publication Critical patent/EP1229565B1/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
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
    • 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
    • H01H71/7445—Poly-phase adjustment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with bimetal elements
    • 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
    • H01H71/145—Electrothermal mechanisms using shape memory materials

Definitions

  • the invention relates to a method for adjusting the thermal tripping system of an electrical switching device, in particular a motor protection switch.
  • the object of the invention is to provide a method for adjusting the thermal release of an electrical switching device, which is simpler and more accurate compared to known methods.
  • each bimetal is first measured by the release mechanism located at the triggering mechanism at a certain current; Then the transmission elements are manufactured and made their assembly. Furthermore, the position of the adjusting element for triggering the trigger mechanism is changed and finally carried out an adjustment of the adjustment associated scaling depending on the rated current to be monitored.
  • the single figure shows a schematic representation of a tripping system with thermostatic bimetals.
  • An electrical motor protection switch which is known per se and not described here, has three parallel bimetallic strips 10, 11 and 12, which are each associated with a phase.
  • the bimetallic strips 10, 11 and 12 bend and operate via slide 13 and 14, a lever 15 which acts on a transmission member 16 of a switching mechanism, not shown, so that a latching point located there is opened and assigned to the power conductors Contact points are permanently opened.
  • a knob 17 with a cam surface 18 which is connected to a plunger 19, on which the trigger lever 16 is rotatably supported via an axis 20.
  • the slider 14 has an elongated flat portion 21 on which perpendicular to it L-shaped projections 22, 23, and 24 are formed, the free legs 25 to 27 are in line and project in each case in the same direction.
  • the slider 13 also has an elongated portion 28, on which also L-shaped portions 29, 30 and 31 are formed, the free leg ends 32 to 34 also project in one direction, wherein in the mounted state, as shown in the figure, the leg ends 25, 32; 26; 33; 27, 34 each project in opposite directions and each take the bimetallic strip 10, 11 and 12 between them and abut against this.
  • the transmission lever or release lever 15 extends perpendicular to the elongate portions 21 and 28 and is rotatably articulated both on the slider 13 and on the slider 14.
  • the sliders 13 and 14 are manufactured individually as follows:
  • the thermostatic bimetals 10 to 12 are brought by heating with electricity in a position corresponding to the position occupied by the bimetals when the finished device is to trigger in operation. This position can be done by heating with electricity of different heights over different time intervals. It is important that the bimetals 10 to 12 finally occupy a defined position and this position is not significantly changed over a reasonable period of time.
  • the respective distances of the bimetals 10 to 12 are measured by the transmission member 16 (lever 16), wherein the trigger mechanism is brought into the release position.
  • the measurement of the bimetal can be done without contact or touch, the latter has the advantage of the later use of the bimetal to overcome force to unlatch the latching mechanism account.
  • the measuring system should exercise in this case in about the same force on the bimetals 10 to 12 as the switching mechanism.
  • the slides 13 and 14 are made, in particular, the length of the legs 25, 32; 26, 33; 27, 34 adjusted accordingly and is manufactured according to. After the production of the slide 13 and 14, these are used together with the transmission lever 15 in the switching device.
  • the bimetals are further held in position by heating with a suitable current, and then the switching device is brought to trigger by turning the adjusting knob 17, in which the plunger 19 is displaced from the cam surface 18.
  • the position of this knob at the time of triggering is matched with a rated current scale on the housing of the switching device.
  • the rated current scale is rotated about the pivot point of the knob 17.
  • each pin engages the hole on a slider 13, 14. This is not shown in the drawing.
  • the measurement of the bimetals is carried out expediently at the lower rated current.
  • the eccentric cam surface 18 should then be rotated a few degrees toward upper rated current prior to assembly of the transfer mechanism with the two sliders 13 and 14, allowing for easier assembly and subsequent deployment via rotation of the adjustment knob during the final stage of the adjustment procedure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Claims (1)

  1. Procédé pour le réglage de déclencheurs thermiques (10, 11, 12) d'un appareil de commutation électrique, en particulier d'un disjoncteur de protection de moteur, associés à chaque phase et conçus comme des bandes en bilames thermiques ou en alliage à mémoire de forme, dont les mouvements de déclenchement à une intensité nominale donnée sont transmis par des organes de transmission (15, 16) à un mécanisme déclencheur, avec un élément de réglage (17) pour le réglage de l'appareil de commutation à une intensité nominale donnée, comprenant les étapes de procédé suivantes :
    - mesure des distances entre chaque déclencheur thermique et une pièce faisant partie du mécanisme déclencheur qui se trouve en position de déclenchement, à une intensité donnée,
    - fabrication des organes de transmission (15, 16) et montage de ceux-ci en fonction des résultats de mesure,
    - modification de la position de l'élément de réglage (17) pour le déclenchement du mécanisme déclencheur,
    - adaptation de l'échelle associée à l'élément de réglage (17).
EP20020000935 2001-02-03 2002-01-16 Procédé pour ajuster un déclencheur thermique d'un appareil de commutation électrique, en particulier un contacteur Expired - Lifetime EP1229565B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10104901 2001-02-03
DE2001104901 DE10104901A1 (de) 2001-02-03 2001-02-03 Verfahren zum Justieren des thermischen Auslösesystems eines elektrischen Schaltgerätes, insbesondere eines Motorschutzschalters

Publications (3)

Publication Number Publication Date
EP1229565A2 EP1229565A2 (fr) 2002-08-07
EP1229565A3 EP1229565A3 (fr) 2004-04-21
EP1229565B1 true EP1229565B1 (fr) 2009-11-11

Family

ID=7672748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020000935 Expired - Lifetime EP1229565B1 (fr) 2001-02-03 2002-01-16 Procédé pour ajuster un déclencheur thermique d'un appareil de commutation électrique, en particulier un contacteur

Country Status (2)

Country Link
EP (1) EP1229565B1 (fr)
DE (2) DE10104901A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005104160A1 (fr) * 2004-04-23 2005-11-03 Siemens Aktiengesellschaft Declencheur de surcharge et procede de reglage de ce dernier
KR100881365B1 (ko) 2007-08-07 2009-02-02 엘에스산전 주식회사 열동형 과부하 보호장치의 트립 감도 조정 방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE359401B (fr) * 1971-12-28 1973-08-27 Asea Ab
DE3732469A1 (de) * 1987-09-23 1989-04-06 Siemens Ag Verfahren zum justieren eines bimetallausloesers
DE19548479C2 (de) * 1995-12-22 1999-09-02 Siemens Ag Thermisches Auslösesystem
DE19619295C2 (de) * 1996-05-13 2003-10-23 Siemens Ag Justierverfahren für thermische Überlastauslöser
CN1071050C (zh) * 1996-09-30 2001-09-12 西门子公司 热过载断路器的调节方法和装置

Also Published As

Publication number Publication date
DE50213981D1 (de) 2009-12-24
EP1229565A3 (fr) 2004-04-21
DE10104901A1 (de) 2002-08-08
EP1229565A2 (fr) 2002-08-07

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