DE915957C - Bimetal release heated by a transducer - Google Patents

Bimetal release heated by a transducer

Info

Publication number
DE915957C
DE915957C DES6100D DES0006100D DE915957C DE 915957 C DE915957 C DE 915957C DE S6100 D DES6100 D DE S6100D DE S0006100 D DES0006100 D DE S0006100D DE 915957 C DE915957 C DE 915957C
Authority
DE
Germany
Prior art keywords
transducer
secondary winding
heated
bimetallic
strip
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
Application number
DES6100D
Other languages
German (de)
Inventor
Dipl-Ing Kurt Buechner
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES6100D priority Critical patent/DE915957C/en
Application granted granted Critical
Publication of DE915957C publication Critical patent/DE915957C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/14Electrothermal mechanisms
    • H01H71/16Electrothermal mechanisms with bimetal element
    • H01H71/164Heating elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/14Electrothermal mechanisms
    • H01H71/16Electrothermal mechanisms with bimetal element
    • H01H71/164Heating elements
    • H01H2071/165Heating elements the bimetal being inductively heated, e.g. load current does not pass through bimetal

Landscapes

  • Thermally Actuated Switches (AREA)

Description

Die Erfindung bezieht sich auf einen durch einen Meßwandl:e.r beheizten, um den Wandlerkern herumgelegten, zum Auslösten elektrischer Schalter dienenden Bimetallstreifen, der direkt ausschließlich durch die Verlustwärme der kurzgeschlossenen Sekundärwicklung des Meßwandlers beheizt wird.The invention relates to a heated by a Messwandl: e.r, around the converter core, serving to trigger electrical switches Bimetal strip that is directly produced exclusively by the heat loss of the short-circuited Secondary winding of the transducer is heated.

Die Erfindung gestattet die bei einem solchen Bimetallauslöser vorgeschlagene unmittelbare Beheizung des Bimetallstreifens durch die an der Sekundärwicklung ierzeugte Wärme dadurch noch weiterhin zu fördern, daß der um den Wandlerkern herumgelegte Bimetalliatreifen als ein in sich geschlossener, vom Magnetstrom des Wandlers durchseitzter Kurzschlußring ausgebildet und so an der Sekundärwicklung des Meßwandlers befestigt und angeordnet ist, daß der Ausschlag des Bimetallstreifens gegenüber der Sekundärwicklung so gering ist, daß die Wärme von der Seku!ndärwicklung. auf den Bimetall'streifen auch während des Ansprechens nicht nur durch direkte Wärmeleitung über die Befestigungsstelle und die _ umsiebende Luft, sondern noch in weitgehendem Maße durch Strahlung übertragen wird.The invention allows the proposed for such a bimetal release direct heating of the bimetallic strip by the generated on the secondary winding To further promote heat by the fact that the one around the converter core Bimetal tire as a self-contained, permeated by the magnetic current of the converter Formed short-circuit ring and so attached to the secondary winding of the transducer and it is arranged that the deflection of the bimetal strip with respect to the secondary winding is so little that the heat from the secondary winding. on the bimetallic strip even during the response, not only through direct heat conduction via the attachment point and the sifting air, but still largely transmitted by radiation will.

Es ist zwar bereits bekannt, ein Heizelement als Kurzschlußring auszubilden. Der Kurzschlußring besteht hierbei jedoch aus einem Rohr, das Quecksilber oder irgendeine andere auszudehnende oder zu verdampfende Flüssigkeit enthält. Auf dem Magnetkern :sind hierbei seine goder mehrere Kurzschlußwindunggen vorgesehen, die zur Veränderung der Schaltzeit mit Hilfe seiner zusätzlichen, Vorrichtung verstellt werden.It is already known to design a heating element as a short-circuit ring. The short-circuit ring here consists of a tube, the mercury or some Contains other liquid to be expanded or evaporated. On the magnetic core : here are his goder several short-circuit windings intended for the change the switching time can be adjusted with the help of its additional device.

In der Zeichnung wist Bein- Ausführungsbeispiel nach der Erfindung dargestellt.In the drawing leg embodiment according to the invention shown.

Fig. i und 2 zeigen die Anbrdnung im Schnitt und in Ansicht.Figs. I and 2 show the attachment in section and in elevation.

Durch das Fenster einfies aus lamellierten Blechen bestehenden Eisenkernes 2 ist der insbesondere stabförmige Primärleiter i hindurchgeführt. Einer der Magnetschenkel des Eisenkernes 2 ist von einem als Sekundärwicklung (Niedervolitwicklung) dienendem Kurzschlußring 3 umgeben. An dem Kurzschlußring ist ein z. B. durch Stanzen hergestelltes Bimetall 4 vorgesehen, das im kalten Zustand mit seiner ganzen Fläche auf dem Kurzschlußring aufliegt. Dias um den Magnetschenkel des Meßwandlers (Stromwandlers) herumgelegte Bimetall4 ist an seiner Stel'die mit dem Kurzschlußring z. B. mit Hilfe von Nieten, Schraubenoder durch Schweißen b:zw. Löten verbunden.An iron core made of laminated sheet metal was inserted through the window 2 the in particular rod-shaped primary conductor i is passed through. One of the magnetic legs of the iron core 2 is of a secondary winding (low voltage winding) serving Short-circuit ring 3 surround. On the short-circuit ring is a z. B. manufactured by stamping Bimetal 4 is provided, which in the cold state with its entire surface on the short-circuit ring rests. Slides placed around the magnetic leg of the transducer (current transformer) Bimetall4 is at its Stel'die with the short-circuit ring z. B. with the help of rivets, Screwing or welding b: betw. Soldering connected.

Der den Magnetschenkel umschließende Bimetallring wird somit vom Magnetfluh des Meßw andlers durchflossen, so daß außer der guten Wärmeübertragung vom Kurzschlußring nach dem Bimetall dieses durch die in ihm erzeugten Wirbelströme zusätzlich erhitzt wird.The bimetallic ring surrounding the magnet leg is thus from the Magnetfluh of the transducer, so that in addition to the good heat transfer from the short-circuit ring after the bimetal, this is additionally heated by the eddy currents generated in it will.

Fig. 2 zeigt den Bimetallring 4 in warmem Zustand. Der Ausschlag des Bimeta,llringes ist leim Ansprechen somit so gering, daß die Wärme von der Sekundärwicklung auf dien Bimetallstreifen auch während des Anspre;chens nicht nur durch direkte Wärmeleitung über die Befestigungsstelle und die umgebende Luft, sondern auch in weitgehendem Maße durch Strahlung übertragen wird.Fig. 2 shows the bimetal ring 4 in a warm state. The rash of the Bimeta, llringes is so low in response that the heat from the secondary winding on the bimetallic strips also during the addressing not only through direct Heat conduction through the attachment point and the surrounding air, but also in is largely transmitted by radiation.

Claims (1)

PATENTANSPRUCH: Durch einen Meßwandler beheizter Bimetallauslöser für elektrische Schalter, bei dem der vom Wandlerkern getrennte Bimetallstreifen direkt ausschließlich durch die Verlustwärme der Sekundärwicklung dies Wandlers beheizt wird; dadurch gekennzeichnet, daß der herumgelegte Bimetallstreifen als in sich geschlossener, vom Ma gnetfluß des Meßwandlers durchsetzter Kurzschlußring ausgebildet und so .an der Sekundärwicklung des Stromwandlers befestigt und angeordnet ist, daß der Ausschlag des Bimetallstreifens gegenüber der Sekundärwicklung derart gering ist, daß die Wärme von der Sekundärwicklung auf den Birnetallstreifen auch während des Ans!prechens nicht nur durch direkte Wärmeleitung über die Befestigungsstelle und die umgebende Luft, sondern noch in weitgehendem Maße durch Strahlung übertragen wird. Angezogene Druckschriften: Deutsche Patentschrift Nr: 3o9 62i; britische Patentschrift Nr. 271 439.PATENT CLAIM: Bimetallic release for electrical switches heated by a transducer, in which the bimetallic strip separated from the transducer core is heated directly exclusively by the heat loss from the secondary winding of this transducer; characterized in that the wrapped bimetallic strip is designed as a self-contained short-circuit ring penetrated by the magnetic flux of the transducer and is attached and arranged so .an the secondary winding of the current transformer that the deflection of the bimetal strip relative to the secondary winding is so small that the heat from the Secondary winding on the pear-shaped metal strip, even during contact, is not only transmitted by direct heat conduction via the fastening point and the surrounding air, but also to a large extent by radiation. Referenced publications: German patent specification No. 3o9 62i; British Pat. No. 271,439.
DES6100D 1940-03-29 1940-03-29 Bimetal release heated by a transducer Expired DE915957C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES6100D DE915957C (en) 1940-03-29 1940-03-29 Bimetal release heated by a transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES6100D DE915957C (en) 1940-03-29 1940-03-29 Bimetal release heated by a transducer

Publications (1)

Publication Number Publication Date
DE915957C true DE915957C (en) 1954-08-02

Family

ID=7471791

Family Applications (1)

Application Number Title Priority Date Filing Date
DES6100D Expired DE915957C (en) 1940-03-29 1940-03-29 Bimetal release heated by a transducer

Country Status (1)

Country Link
DE (1) DE915957C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2830079A1 (en) * 2013-07-26 2015-01-28 Siemens Aktiengesellschaft Bimetal unit, trip unit, circuit breaker, series of circuit breakers, and method for calibrating circuit breaker
WO2017173813A1 (en) * 2016-04-05 2017-10-12 浙江正泰电器股份有限公司 Thermal tripping apparatus for moulded case circuit breaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309621C (en) *
GB271439A (en) * 1926-05-20 1928-02-09 Gen Electric Improvements in and relating to thermal and magnetic protective or indicating devices for electric circuits

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309621C (en) *
GB271439A (en) * 1926-05-20 1928-02-09 Gen Electric Improvements in and relating to thermal and magnetic protective or indicating devices for electric circuits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2830079A1 (en) * 2013-07-26 2015-01-28 Siemens Aktiengesellschaft Bimetal unit, trip unit, circuit breaker, series of circuit breakers, and method for calibrating circuit breaker
WO2017173813A1 (en) * 2016-04-05 2017-10-12 浙江正泰电器股份有限公司 Thermal tripping apparatus for moulded case circuit breaker

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