DE435866C - Automatic switch for three-phase motors to switch off when a phase is missing - Google Patents

Automatic switch for three-phase motors to switch off when a phase is missing

Info

Publication number
DE435866C
DE435866C DEA42363D DEA0042363D DE435866C DE 435866 C DE435866 C DE 435866C DE A42363 D DEA42363 D DE A42363D DE A0042363 D DEA0042363 D DE A0042363D DE 435866 C DE435866 C DE 435866C
Authority
DE
Germany
Prior art keywords
switch
phase
missing
contacts
motors
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
DEA42363D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEA42363D priority Critical patent/DE435866C/en
Application granted granted Critical
Publication of DE435866C publication Critical patent/DE435866C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/12Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load
    • H02H3/13Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load for multiphase applications, e.g. phase interruption

Landscapes

  • Motor And Converter Starters (AREA)

Description

DEUTSCHES REICHGERMAN EMPIRE

AUSGEGEBEN AM 21. OKTOBER 1926ISSUED OCTOBER 21, 1926

REICHSPATENTAMTREICH PATENT OFFICE

PATENTSCHRIFTPATENT LETTERING

- JVl 435866 KLASSE 21 c GRUPPE 71- JVl 435866 CLASS 21c GROUP 71

(A (A. 42363 42363 VIIII21C5)VIIII21C 5 )

Otto Aue in Frankenthal, Pfalz,Otto Aue in Frankenthal, Palatinate,

Selbsttätiger Schalter für Drehstrommotoren zum Abschalten beim Ausbleiben einer Phase. Patentiert im Deutschen Reiche vom 1. Juni 1924 ab. Automatic switch for three-phase motors to switch off if a phase is missing. Patented in the German Empire on June 1, 1924.

Die Erfindung bezieht sich auf einenThe invention relates to a

selbsttätigen Schalter für Drehstrommotoren zum Abschalten beim Ausbleiben einer Phase. Das Wesen der Erfindung besteht darin, daß die beweglichen Kontakte desautomatic switch for three-phase motors to switch off if a Phase. The essence of the invention is that the movable contacts of the

Schalters auf einer Isoliertraverse angeordnet sind, die beiderends von den mit ihr gelenkig verbundenen Solenoidkernen zweier Phasenstromspulen entgegen dem Eigengewicht des Traversengestänges in Kontakt-Switches are arranged on an insulating crossbar, which is articulated at both ends with it connected solenoid cores of two phase current coils against the weight of the crossbar in contact

lage mit den festen Kontakten des Schalters gehalten wird. ' Der ■ Schalter zeichnet sich durch große Einfacheit und sichere Wirkungsweise aus.position with the fixed contacts of the switch. 'The ■ switch stands out through great simplicity and safe mode of operation.

S Die Abbildung veranschaulicht den Schalter in der Ausschaltstellung. Er wird zwischen die dreipolige Sicherung und den Motor eingebaut. Es bezeichnen Ü, V-, W die beweglichen Kontakte des Schalters, dieS The illustration shows the switch in the off position. It is installed between the three-pole fuse and the motor. Ü, V-, W denote the moving contacts of the switch, the

to fest an einer Isoliertraverse JD sitzen. X, Y1 Z sind die festen Kontakte, die zum nicht gezeichneten Motor führen. Mit A und B sind zwei Stromspulen bezeichnet, die in den beiden äußeren Phasen liegen. Die Spulen A und B sind einerseits an die Kontakte U und W angeschlossen und führen anderseits zu einem von Hand aus zu betätigenden Ausschalter C. Die Kerne der Spulen A und B sind mit den Enden der Iso-to sit firmly on an insulating traverse JD. X, Y 1 Z are the fixed contacts that lead to the motor (not shown). A and B denote two current coils which are in the two outer phases. The coils A and B are connected on the one hand to the contacts U and W and on the other hand lead to a manually operated switch C. The cores of the coils A and B are connected to the ends of the insulating

ao liertraverse D bei e1 und e11 gelenkig verbunden. ao liertraverse D articulated at e 1 and e 11.

Die Wirkungsweise ist folgende: Zunächst wird der Handschalter C eingeschaltet. Alsdann wird durch eine geeignete VorrichtungThe mode of operation is as follows: First, the hand switch C is switched on. Then by a suitable device

«5 die Traverse D angehoben, bis ihre Kontakte U1 V1 W die festen Kontakte X1 Y1 Z berühren. In diesem Augenblick fließt auch Strom durch die Spulen A und B. Diese ziehen ihre Kerne ein und sichern so entgegen dem Gewicht des Traversengestänges die Schließung der Kontakte U, V, W mit den Kontakten X, Y, Z. Die Vorrichtung zum Anheben der Traverse ist jetzt ausgeschaltet. Schmelzen in den Phasenleitungen A und B beide Sicherungen durch, so fällt die Isoliertraverse D geradlinig herunter. Schmilzt aber nur eine Sicherung (z. B. in der Phase B) durch, so fällt zunächst nur die entsprechende Seite der Traverse D ab, weil nur die Spule B stromlos wird. Die Schräglage der Traverse bewirkt aber eine Trennung der Kontakte U und X, so daß auch die Spule A stromlos wird und somit der Schalter den Motor abschaltet.«5 the traverse D is raised until its contacts U 1 V 1 W touch the fixed contacts X 1 Y 1 Z. At this moment, current also flows through the coils A and B. These pull in their cores and thus secure the closure of the contacts U, V, W with the contacts X, Y, Z against the weight of the truss rod. The device for lifting the truss is now off. If both fuses melt in the phase lines A and B , the insulating crosspiece D falls down in a straight line. However, if only one fuse blows (e.g. in phase B), only the corresponding side of the crossbeam D will initially drop because only the coil B is de-energized. The inclined position of the traverse causes the contacts U and X to be separated, so that the coil A is also de-energized and the switch thus switches off the motor.

Claims (1)

Patent-Anspruch :Patent claim: Selbsttätiger Schalter für Drehstrommotoren zum Abschalten beim Ausbleiben einer Phase, dadurch gekennzeichnet, daß die !beweglichen Kontakte (U, V1 W) des Schalters auf einer Isoliertraverse (D) angeordnet sind, die beiderends von den mit ihr gelenkig verbundenen Solenoidkernen zweier Phasenströmspulen (A, B) getragen und von diesen normal entgegen dem Eigengewicht des Traversengestänges in Kontaktlage mit den festen Kontakten (X1 Y, Z) des Schalters gehalten wirdLAutomatic switch for three-phase motors to switch off when a phase is absent, characterized in that the! Movable contacts (U, V 1 W) of the switch are arranged on an insulating cross-piece (D), which are connected at both ends to the solenoid cores of two phase current coils (A , B) and is held by these normally against the weight of the crossbar in contact with the fixed contacts (X 1 Y, Z) of the switch L.
DEA42363D 1924-06-01 1924-06-01 Automatic switch for three-phase motors to switch off when a phase is missing Expired DE435866C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA42363D DE435866C (en) 1924-06-01 1924-06-01 Automatic switch for three-phase motors to switch off when a phase is missing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA42363D DE435866C (en) 1924-06-01 1924-06-01 Automatic switch for three-phase motors to switch off when a phase is missing

Publications (1)

Publication Number Publication Date
DE435866C true DE435866C (en) 1926-10-21

Family

ID=6933044

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA42363D Expired DE435866C (en) 1924-06-01 1924-06-01 Automatic switch for three-phase motors to switch off when a phase is missing

Country Status (1)

Country Link
DE (1) DE435866C (en)

Similar Documents

Publication Publication Date Title
DE435866C (en) Automatic switch for three-phase motors to switch off when a phase is missing
DE597445C (en) Overcurrent release for electrical switches
DE395689C (en) Automatic switch with overcurrent release
DE402166C (en) Safety device for three-phase motors
DE417451C (en) Safety starter switch for three-phase motors
DE598887C (en) Electromagnetic overcurrent release with delay device for asynchronous motors
DE520924C (en) Selective protection for multi-phase networks
DE426261C (en) Circuit breaker for induction motors
DE450816C (en) Quick switch with holding magnet
DE421524C (en) Device for eliminating malfunctions caused by double earth faults in three-phase networks
DE960299C (en) Overcurrent protection switch
DE544781C (en) Device for selective protection in direct current systems
DE558580C (en) Arrangement of two distance relays to protect a three-phase line
DE503736C (en) Protective device for electrical machines, apparatus or the like with star-connected windings
DE479113C (en) Selectively acting reverse current protection device for rectifier systems with several units connected in parallel
DE372775C (en) Device for the protection of motors with high starting currents by maximum current relays
DE546919C (en) Switching and protection device for remote-controlled electric motors, e.g. B. pump motors
DE604526C (en) Protective relay with an excitation device that depends on a mains voltage
DE581352C (en) Protective device for multi-phase AC machines, especially single armature converters
DE447623C (en) Overcurrent release device
DE568689C (en) Switching arrangement in electrical distribution systems that are divided into individual network sections
DE603510C (en) Switches, especially for automatic switchgear, with upstream and main contacts
DE420454C (en) Switching arrangement for the protection of three-wire DC systems
DE477040C (en) Device for selective shutdown in the event of an earth fault
DE381045C (en) Device for local delimitation of the fault area in line networks depending on the voltage drop