DE535376C - Thermally acting overcurrent release for alternating current - Google Patents

Thermally acting overcurrent release for alternating current

Info

Publication number
DE535376C
DE535376C DEK114792D DEK0114792D DE535376C DE 535376 C DE535376 C DE 535376C DE K114792 D DEK114792 D DE K114792D DE K0114792 D DEK0114792 D DE K0114792D DE 535376 C DE535376 C DE 535376C
Authority
DE
Germany
Prior art keywords
alternating current
overcurrent release
thermally acting
coil
thermally
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
DEK114792D
Other languages
German (de)
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.)
KLOECKNER KOMM GES F
Original Assignee
KLOECKNER KOMM GES F
Publication date
Priority to DEK114792D priority Critical patent/DE535376C/en
Application granted granted Critical
Publication of DE535376C publication Critical patent/DE535376C/en
Expired legal-status Critical Current

Links

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
    • H01H71/18—Electrothermal mechanisms with expanding rod, strip, or wire

Landscapes

  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Description

535535

Es ist bekannt, Überstromwärmezeitauslöser der verschiedensten Art durch Vermittlung von Transformatoren zu erwärmen. Bei einer solchen Anordnung· sind beträchtliche Äuslösezeiten zu erzielen, auch noch bei höheren Überlastungen. Doch steht dem der Nachteil gegenüber, daß zwei Stromkreise notwendig sind und die ganze Ausführung teuer kommt. Um diesem Übelstand abzuhelfen, hat manIt is known that overcurrent heat time releases of the most varied of types are mediated from transformers to heat. With such an arrangement there are considerable release times to be achieved, even with higher overloads. But there is the disadvantage compared to the fact that two circuits are necessary and the whole implementation is expensive. To remedy this evil one has

ίο ein Auslöseelement, z. B. einen Bimetallstreifen, der aus einem magnetisierharen Metall besteht, innerhalb einer Spule angeordnet und so die Wicklung als Heizelement benutzt. Die Heizung des Bimetallstreifens erfolgt hierbei ,mittelbar durch die Magnetisierungsverluste und unmittelbar durch die induzierten Ströme.ίο a trigger element, e.g. B. a bimetal strip, which consists of a magnetizable metal, arranged within a coil and so used the winding as a heating element. The bimetal strip is heated here, indirectly through the magnetization losses and directly through the induced Currents.

Die vorliegende "Erfindung bedeutet gegenüber diesen bekannten Ausführungen eineThe present "invention means opposite these known designs a

ao wesentliche Vereinfachung im konstruktiven Aufhau, da als Ausdehnungselement ein Schenkel eines Magneten selbst verwandt wird. Die Auslösevorrichtung erhält damit die geringste Zahl der überhaupt notwendigen Konstruktionsteile und gestattet ferner in einfachster Weise noch die Verbindung mit einer an sich bekannten Schnellauslösung für hohe Überströme. Ein besonderer ,Sekundärkreis braucht nicht vorhanden zu sein. Trotzdem erfolgt die Beheizung vollkommen indirekt, so daß auch die Schwierigkeiten der Isolation, die bei direkt beheizten Wärtneausdehnungselementen immer auftreten, ganz und gar entfallen. ao essential simplification in the constructive structure, since a leg is used as the expansion element a magnet itself is used. The tripping device thus receives the least Number of construction parts necessary at all and also allows in the simplest Wise the connection with a known quick release for high overcurrents. A special, secondary circuit does not need to be present. Still done the heating completely indirect, so that also the difficulties of the insulation, the always occur with directly heated expansion elements, completely omitted.

Die Abbildung zeigt einen solchen Auslöser. Die Ausdehnung des einen Schenkels 3 des Magneten 1 wird durch Einwirkung auf den Hebel 8 zur Auslösung des Schalters 4 benutzt. ,Ein Kurzschlußanker7 kann bei hohen Stromstärken unmittelbare Abschaltung bewirken, ohne daß es eines weiteren Magneten bedarf.The illustration shows such a trigger. The expansion of one leg 3 of the magnet 1 is used to trigger the switch 4 by acting on the lever 8. , A short-circuit armature7 can cause immediate disconnection at high currents, without the need for another magnet.

Claims (2)

Patentansprüche:Patent claims: 1. Thermisch wirkender Überstromauslöser für Wechselstrom, dadurch gekennzeichnet, daß ein Eisenkörper durch eine vom zu überwachenden Strom gespeiste Spule erregt wird und die Eisenmasse ganz oder teilweise, z. B. ein Magnetschenkel, durch entsprechende Anordnung und Ausbildung als Auslösieelement wirkt, wobei die Ausdehnung durch die im Magneten !entstehenden Wärmeverluste hervorgerufen wird. - ■1. Thermal overcurrent release for alternating current, characterized in that an iron body is replaced by a coil fed by the current to be monitored is energized and the iron mass wholly or partially, e.g. B. a magnetic leg, acts as a release element through appropriate arrangement and design, the expansion being caused by the heat losses occurring in the magnet! will. - ■ 2. Thermisch wirkender Überstromauslöser nach Anspruch 1, dadurch gekennzeichnet, daß außer dem thermisch wirkenden Auslöser auch noch ein magnetisch wirkender vorhanden' ist, der von der2. Thermally acting overcurrent release according to claim 1, characterized in that that in addition to the thermally acting trigger there is also a magnetically acting one ', which is of the ■ gleichen Spule oder vom Streufluß dieser Spule erregt wird.■ the same coil or the leakage flux of this coil is excited.
DEK114792D Thermally acting overcurrent release for alternating current Expired DE535376C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK114792D DE535376C (en) Thermally acting overcurrent release for alternating current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK114792D DE535376C (en) Thermally acting overcurrent release for alternating current

Publications (1)

Publication Number Publication Date
DE535376C true DE535376C (en) 1931-10-08

Family

ID=7243111

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK114792D Expired DE535376C (en) Thermally acting overcurrent release for alternating current

Country Status (1)

Country Link
DE (1) DE535376C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950482C (en) * 1942-08-02 1956-10-11 Siemens Ag Display device for back currents or overcurrents
DE963348C (en) * 1944-02-02 1957-05-09 Siemens Ag Release device with a thermally delayed bimetal and an undelayed electromagnetic quick release
DE1244515B (en) * 1960-06-09 1967-07-13 C E Johanssoni Forster Messaut Device for the reproducible generation of small, predeterminable displacements, especially on measuring and machine tools

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950482C (en) * 1942-08-02 1956-10-11 Siemens Ag Display device for back currents or overcurrents
DE963348C (en) * 1944-02-02 1957-05-09 Siemens Ag Release device with a thermally delayed bimetal and an undelayed electromagnetic quick release
DE1244515B (en) * 1960-06-09 1967-07-13 C E Johanssoni Forster Messaut Device for the reproducible generation of small, predeterminable displacements, especially on measuring and machine tools

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