DE436073C - Electromagnetic current limiter with a resistor connected in parallel to its main contacts - Google Patents

Electromagnetic current limiter with a resistor connected in parallel to its main contacts

Info

Publication number
DE436073C
DE436073C DEA45171D DEA0045171D DE436073C DE 436073 C DE436073 C DE 436073C DE A45171 D DEA45171 D DE A45171D DE A0045171 D DEA0045171 D DE A0045171D DE 436073 C DE436073 C DE 436073C
Authority
DE
Germany
Prior art keywords
current limiter
main contacts
parallel
resistor connected
electromagnetic current
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
DEA45171D
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.)
AEG AG
Original Assignee
AEG 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 AEG AG filed Critical AEG AG
Priority to DEA45171D priority Critical patent/DE436073C/en
Application granted granted Critical
Publication of DE436073C publication Critical patent/DE436073C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H75/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of power reset mechanism
    • H01H75/02—Details
    • H01H75/04—Reset mechanisms for automatically reclosing a limited number of times
    • H01H75/06—Reset mechanisms for automatically reclosing a limited number of times effecting one reclosing action only

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Description

DEUTSCHES REICHGERMAN EMPIRE

AUSGEGEBEN AM 23. OKTOBER 1926ISSUED OCTOBER 23, 1926

REICHSPATENTAMTREICH PATENT OFFICE

PATENTSCHRIFTPATENT LETTERING

KLASSE 21 c GRUPPE 68CLASS 21 c GROUP 68

(A 45i7i(A 45i 7 i

Firma Allgemeine Elektricitäts-Gesellschaft in Berlin.General Electricity Company in Berlin.

Elektromagnetischer Strombegrenzer mit parallel zu seinen HauptkontaktenElectromagnetic current limiter with parallel to its main contacts

geschaltetem Widerstand.switched resistor.

Patentiert im Deutschen Reiche vom 9. Juni 1925 ab.Patented in the German Empire on June 9, 1925.

Die Erfindung bezieht sich auf einenThe invention relates to a

elektromagnetischen Strombegrenzer, der in die Installation eingebaut wird, um eine über ein bestimmtes Maß hinausgehende Stromabnähme durch den Verbraucher zu verhindern.electromagnetic current limiter that is built into the installation to prevent an over to prevent a certain amount of excess power consumption by the consumer.

Es hat sich nun herausgestellt, daß in ungenügend bemessenen Netzen und bei zu kleinen Transformatoren durch gleichzeitiges Arbeiten mehrerer Strombegrenzer starke Netzschwankungen auftreten, die von dem plötzlichenIt has now been found that in insufficiently dimensioned networks and too small Transformers due to the simultaneous operation of several current limiters strong network fluctuations occur by the sudden

Ab- und Zuschalten größerer Ströme herrühren. Switching larger currents off and on.

Es sind nun bereits Anordnungen bekannt, bei denen parallel zu den Hauptkontakten des Strombegrenzers ein Ohmscher oder induktiver Widerstand geschaltet wird zum Zwecke, eine völlige Unterbrechung des Stromes durch den Strombegrenzer zu verhindern und den Strom nur auf bestimmte Bruchteile des Maximalwertes herabzumindern. Derartige Anordnungen haben aber den Nachteil, daß bei Überstrom infolge des häufigen Ein- und Ausschaltens die Kontakte des Strombegrenzers stark beansprucht werden.There are now arrangements are known in which parallel to the main contacts of the Current limiter an ohmic or inductive resistor is switched for the purpose of to prevent a complete interruption of the current through the current limiter and the Reduce current only to certain fractions of the maximum value. Such arrangements but have the disadvantage that in the event of overcurrent as a result of the frequent switching on and off the contacts of the current limiter are heavily used.

Um diesen Übelstand zu vermeiden, wird gemäß der Erfindung der Strombegrenzer mit eimer Verklinkung für die Hauptkontakte versehen, die von dem durch den Widerstand fließenden Strom gesteuert wird und den Hauptstrom so lange unterbricht, bis der Überstrom abgeschaltet ist.In order to avoid this inconvenience, the current limiter is according to the invention with bucket latch for the main contacts provided by the one through the resistor flowing current is controlled and interrupts the main current until the Overcurrent is switched off.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.An exemplary embodiment of the invention is shown in the drawing.

In Reihe mit der Drosselspule D liegt die Spule iV eines Elektromagneten, dessen Eisenkern beliebig angeordnet ist. K. ist ein unter der Wirkung einer Feder/7 stehender Sperrhebel, dessen zweiter Schenkel .4 bei stromlosem Elektromagneten N durch dessen Eisenkern nach unten gedrückt wird und die Feder F gespannt hält.In series with the choke coil D is the coil iV of an electromagnet, the iron core of which is arranged as desired. K. is a locking lever under the action of a spring / 7 , the second leg of which .4 is pressed down by its iron core when the electromagnet N is de-energized and keeps the spring F tensioned.

Überschreitet der Strom die zulässigeIf the current exceeds the permissible

Grenze, so öffnet unter der Wirkung der Magnetspule M der Strombegrenzer die Hauptkontakte//. Das Netz erhält nun seinen Strom über die Drosselspule D und die Magnetspule N. Dadurch wird der Netzstrom auf etwa die Hälfte seines Maximalwertes gedrosselt. Dieser Strom reicht aber bei starker Belastung des Netzes aus, um den Kern des Magneten entgegen seinem Eigengewicht nach oben zu ziehen. Dadurch wird der Sperrhebel K unter der Wirkung der Feder/7 nach links gezogen und verhindert in dieser Stellung ein Schließen der Hauptkontakte H. Beim Zurückgehen der Belastung unter das für das Ansprechen des Strombegrenzers wesentliche Maß fällt der Kern des Elektromagneten N unter der Wirkung seines Eigengewichtes ab, zieht den Schenkel A nach unten und entfernt dadurch den Sperrhebel K aus der Bewegungsbahn des die Hauptkontakte tragenden Hebels, so daß sich die letzteren wieder schließen können. Gegebenenfalls kann auch der Eisenkern der Drosselspule D gleichzeitig zur Steuerung des Sperrhebels verwendet werden.Limit, the current limiter opens the main contacts // under the action of the magnetic coil M. The network now receives its current via the choke coil D and the magnetic coil N. As a result, the network current is throttled to about half of its maximum value. However, when the network is heavily loaded, this current is sufficient to pull the core of the magnet upwards against its own weight. As a result, the locking lever K is pulled to the left under the action of the spring / 7 and prevents the main contacts H from closing in this position off, pulls the leg A downwards and thereby removes the locking lever K from the path of movement of the lever carrying the main contacts, so that the latter can close again. If necessary, the iron core of the choke coil D can also be used at the same time to control the locking lever.

Claims (1)

Patent-Anspruch :Patent claim: Elektromagnetischer Strombegrenzer mit parallel zu seinen Hauptkontakten geschaltetem Widerstand, der bei Überstrom eingeschaltet wird, gekennzeichnet durch eine Verklinkung, die durch eine im Stromkreis des Widerstandes liegende elektromagnetische Schaltvorrichtung derart gesteuert wird, daß sie die Hauptkontakte des Strombegrenzers so lange gegen eine Schaltbewegung sperrt, bis der Überstrom abgeschaltet ist.Electromagnetic current limiter with connected in parallel to its main contacts Resistance, which is switched on in the event of an overcurrent, characterized by a latch, which is connected by an in the circuit of the resistance lying electromagnetic switching device controlled in this way is that it blocks the main contacts of the current limiter against a switching movement until the overcurrent is switched off.
DEA45171D 1925-06-09 1925-06-09 Electromagnetic current limiter with a resistor connected in parallel to its main contacts Expired DE436073C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA45171D DE436073C (en) 1925-06-09 1925-06-09 Electromagnetic current limiter with a resistor connected in parallel to its main contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA45171D DE436073C (en) 1925-06-09 1925-06-09 Electromagnetic current limiter with a resistor connected in parallel to its main contacts

Publications (1)

Publication Number Publication Date
DE436073C true DE436073C (en) 1926-10-23

Family

ID=6934576

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA45171D Expired DE436073C (en) 1925-06-09 1925-06-09 Electromagnetic current limiter with a resistor connected in parallel to its main contacts

Country Status (1)

Country Link
DE (1) DE436073C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741044C (en) * 1940-09-26 1943-11-03 Ing Karl Kesl Electrical circuit arrangement
US2686238A (en) * 1950-03-30 1954-08-10 Mcgraw Electric Co Series capacitor protective device
DE1074728B (en) * 1960-02-04 Heliowatt Werke Elektrizitäts-Aktiengesellschaft, Berlin - Charlottenburg Electromagnetic current limiter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074728B (en) * 1960-02-04 Heliowatt Werke Elektrizitäts-Aktiengesellschaft, Berlin - Charlottenburg Electromagnetic current limiter
DE741044C (en) * 1940-09-26 1943-11-03 Ing Karl Kesl Electrical circuit arrangement
US2686238A (en) * 1950-03-30 1954-08-10 Mcgraw Electric Co Series capacitor protective device

Similar Documents

Publication Publication Date Title
DE436073C (en) Electromagnetic current limiter with a resistor connected in parallel to its main contacts
DE855602C (en) Arrangement to limit overcurrents in electrical circuits, especially high-voltage networks
DE684638C (en) Overcurrent relay arrangement
DE597524C (en) Electrical protection device
DE711309C (en) Arrangement for permanent charging of buffer batteries
DE1033759B (en) Compressed air switch with auxiliary interruption point for parallel resistors
DE558161C (en) Switching relay arrangement using an electron tube whose grid is controlled by a tactile contactor and whose anode current causes the intended switching effect directly or indirectly via a relay
DE493280C (en) Polarized switch
DE670514C (en) Arrangement for supplying busbars
DE707992C (en) Protection circuit
DE2423479C2 (en) Circuit arrangement in alternating current circuits in telecommunications
DE514898C (en) Circuit arrangement for the power supply of telephone systems with automatic regulation of the buffer current
DE524995C (en) Electromagnet, especially for telecommunication systems, with movably mounted armature and magnetic core
DE550869C (en) Alternating current electromagnet, in which a choke is switched on in the circuit of its magnet winding
DE548197C (en) Arrangement of automatic off switches to reduce power consumption
DE462981C (en) Electromagnetic switch-on device for connecting two independently powered circuits
DE446874C (en) Overcurrent switch
DE943002C (en) Device for interrupting or regulating direct and alternating current
DE684249C (en) Electric switch with fault current release, especially as protection against contact
DE420816C (en) Circuit arrangement for selective disconnection of parallel cables
DE640913C (en) Protective arrangement for the quick selective display of changes in impedance on electrical lines or for the rapid shutdown of faulty electrical lines
AT131032B (en) Arrangement for the most spark-free disconnection of inductances.
DE606544C (en) Distance protection device depending on the line resistance
DE421524C (en) Device for eliminating malfunctions caused by double earth faults in three-phase networks
DE543331C (en) Device for limiting surge and permanent short-circuit currents