DE406039C - Protection device, especially for overcurrent relays - Google Patents

Protection device, especially for overcurrent relays

Info

Publication number
DE406039C
DE406039C DEE29207D DEE0029207D DE406039C DE 406039 C DE406039 C DE 406039C DE E29207 D DEE29207 D DE E29207D DE E0029207 D DEE0029207 D DE E0029207D DE 406039 C DE406039 C DE 406039C
Authority
DE
Germany
Prior art keywords
magnet
coil
protection device
overcurrent relays
relays
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
DEE29207D
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.)
EMAG ELEK ZITAETS AKT GES
Original Assignee
EMAG ELEK ZITAETS AKT GES
Publication date
Priority to DEE29207D priority Critical patent/DE406039C/en
Application granted granted Critical
Publication of DE406039C publication Critical patent/DE406039C/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
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • H01H71/48—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts with provision for short-circuiting the electrical input to the release mechanism after release of the switch, e.g. for protection of heating wire

Landscapes

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

Description

Bei Hilfsapparaten, insbesondere bei Übersttomrelais mit Magnetspule, die eine gewisse Anzahl Amperewindungen erfordern, ist es oft nötig, den üblichen Leitungsquerschnitt zu verringern, um die Windungen, die die Spule erfordert, unterbringen zu können. Bei großen Stromkreisen sind diese Querschnittsverjüngungen nun eine gefährliche Stelle des Netzes, weil hier zuerst bei übermäßigerWith auxiliary equipment, especially with overload relays with solenoid coils, which require a certain number of ampere-turns, it is often necessary to use the usual cable cross-section decrease to accommodate the turns required by the coil. at In large electrical circuits, these cross-sectional tapers are now a dangerous place in the Network because here first at excessive

ίο Überlastung eine Verdampfung der Leitungen eintritt. Dies zu verhindern ist der Zweck der Erfindung.ίο Overload an evaporation of the lines entry. The purpose of the invention is to prevent this.

In der Zeichnung bedeutet α eine Stromleitung, b eine Spule eines Magneten c, c einen Magneten, d den Eisenanker, der in dem Bereich der Streukraftlinien des Magneten c liegt, e ist eine Kontaktstelle für die Parallelschlußleitung, f ist ein Nebenwiderstand, der gleichzeitig die Funkenbildung bei e verhindert.In the drawing, α denotes a power line, b a coil of a magnet c, c a magnet, d the iron armature, which lies in the area of the stray lines of force of the magnet c, e is a contact point for the parallel connection line, f is a shunt resistance, which is at the same time the Prevents sparking at e .

Bei normaler Überlastung, beispielsweise 2- bis ßfachem Betriebsstrom, den die Spule b, ohne Schaden zu leiden, 3 bis 5 Sekunden lang aufnehmen kann, wird nur der Anker c betätigt und damit der Stromkreis durch Unterbrechen des Schalters abgeschaltet. Tritt jedoch eine stärkere Überlastung auf, der die Spule b nicht gewachsen ist, so treten entsprechend stärkere Streulinien auf, und der Anker d wird angezogen und damit der Kontakt bei e geschlossen. Es geht dann sofort ein Teilstrom durch die- Parallelleitung über den Kontakt e, so - daß der Strom in der Spule b entsprechend reduziert wird.In the event of normal overload, for example 2 to ß times the operating current, which the coil b can absorb for 3 to 5 seconds without suffering damage, only the armature c is actuated and thus the circuit is switched off by breaking the switch. If, however, a greater overload occurs, which the coil b cannot cope with, then correspondingly greater scatter lines appear, and the armature d is attracted and thus the contact at e is closed. A partial current then immediately goes through the parallel line via contact e, so that the current in coil b is reduced accordingly.

Claims (1)

35 Patent-Anspruch:35 patent claim: Schutzeinrichtung, insbesondere für Überstromrelais mit Magnetspule zur Vermeidung der übermäßigen Erwärmung des Spulendrahtes und seiner Verbindungen, dadurch gekennzeichnet, daß ein in das Kraftlinienfeld des Magneten gelegter Hilfsanker bei Überschreiten der zulässigen Stromstärke ohne Rücksicht auf die Auslösezeit des Magneten parallel zu der Magnetspule einen Widerstand schaltet.Protective device, in particular for overcurrent relays with magnetic coils for Avoidance of excessive heating of the coil wire and its connections, characterized in that a Auxiliary armature placed in the force line field of the magnet when the permissible current strength is exceeded, regardless of the tripping time of the magnet switches a resistor in parallel with the magnet coil.
DEE29207D Protection device, especially for overcurrent relays Expired DE406039C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE29207D DE406039C (en) Protection device, especially for overcurrent relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE29207D DE406039C (en) Protection device, especially for overcurrent relays

Publications (1)

Publication Number Publication Date
DE406039C true DE406039C (en) 1924-11-20

Family

ID=7073794

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE29207D Expired DE406039C (en) Protection device, especially for overcurrent relays

Country Status (1)

Country Link
DE (1) DE406039C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252869A2 (en) * 1986-07-08 1988-01-13 Cooper Power Systems, Inc. Overload switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252869A2 (en) * 1986-07-08 1988-01-13 Cooper Power Systems, Inc. Overload switch
EP0252869A3 (en) * 1986-07-08 1990-01-03 Rte Corporation Overload switch

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