DE426792C - Device for automatic triggering of the switch on three-phase motors in the event of overcurrent and in the event of unequal load in the phase lines - Google Patents

Device for automatic triggering of the switch on three-phase motors in the event of overcurrent and in the event of unequal load in the phase lines

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Publication number
DE426792C
DE426792C DEP47658D DEP0047658D DE426792C DE 426792 C DE426792 C DE 426792C DE P47658 D DEP47658 D DE P47658D DE P0047658 D DEP0047658 D DE P0047658D DE 426792 C DE426792 C DE 426792C
Authority
DE
Germany
Prior art keywords
event
phase
switch
overcurrent
automatic triggering
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
DEP47658D
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.)
PAUL PREY
Original Assignee
PAUL PREY
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 PAUL PREY filed Critical PAUL PREY
Priority to DEP47658D priority Critical patent/DE426792C/en
Application granted granted Critical
Publication of DE426792C publication Critical patent/DE426792C/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency 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 excess current
    • H02H3/10—Emergency 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 excess current additionally responsive to some other abnormal electrical conditions

Landscapes

  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Control Of Multiple Motors (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

DEUTSCHES REICHGERMAN EMPIRE

AUSGEGEBEN AM 19. MÄRZ 1926ISSUED MARCH 19, 1926

REICHSPATENTAMTREICH PATENT OFFICE

PATENTSCHRIFTPATENT LETTERING

KLASSE 21c GRUPPE 71CLASS 21c GROUP 71

(P 47658 VIIIJ2IC*)(P 47658 VIIIJ2IC *)

Paul Prey in Magdeburg.Paul Prey in Magdeburg.

Einrichtung zum selbsttätigen Auslösen des Schalters an Drehstrom-Motoren bei Überstrom und bei Ungleichheit der Belastung in den Phasenleitungen.Device for automatic triggering of the switch on three-phase motors in the event of overcurrent and in the event of an unequal load in the phase lines.

Patentiert im Deutschen Reiche vom 1, März 1924 ab.Patented in the German Empire on March 1, 1924.

iZum Schütze von Elektromotoren werden vorteilhaft Schalter mit automatischer Auslösung verwendet. Bei Drehstrom-Motoren müssen mindestens zwei Auslöser vorhanden sein, doch empfiehlt es sich, in Netzen mitiBecome the protection of electric motors switches with automatic release are advantageously used. With three-phase motors there must be at least two triggers, but it is recommended to use in networks with

geerdetem Nullpunkt. Schalter mit drei Aus losem zu benutzen.grounded zero point. Switch with three stops to use.

Werden in solchen Netzen nur Schalter mit zwei Auslösern eingebaut, so wird, sobald die dritte ungeschützte Phase Schluß gegen Erde ίοIf only switches with two releases are installed in such networks, as soon as the third unprotected phase end to earth ίο

erhält, der Schalter nicht ansprechen können und infolgedessen der Motor „verbrennen.receives, the switch cannot respond and as a result the engine "burns up."

Die im nachstehenden beschriebene und auf der Zeichnung dargestellte Erfindung bezweckt die Schaffung eines billigen automatischen Schalters, der in gleicher Weise wirkt wie ein Schalter mit drei Auslösern.The aim of the invention described below and shown in the drawing the creation of a cheap automatic switch that works in the same way like a switch with three triggers.

iZu diesem Zweck wird in eine der Zuleitungen zum Motor ein Maximalauslöser geschaltet ίο und außerdem in die sämtüchen Zi^eitungen eine Einrichtung, die bei Ungleichheit der Ströme in den drei Phasen in Wirksamkeit tritt.For this purpose, a maximum release is switched in one of the supply lines to the motor ίο and also in all the newspapers a device that operates in the event of inequality of the currents in the three phases occurs.

In der Zeichnung ist α der Höchststromauslöser mit dem Anker b, c der Eisenkern der auf Stromungleichheit in den drei Phasen ansprechenden Vorrichtung, d der zugehörige Anker. Die letztere Vorrichtung kann beispielsweise nach Patent 392638 eingerichtet sein, bei welcher in den drei Schenkeln ein durch den Betriebsstrom des Motors hervorgerufenes magnetisches Drehfeld entsteht, das den Anker, der eine hohe Eigenschwingungszahl besitzt, festhält. In the drawing, α is the maximum current release with armature b, c is the iron core of the device responding to current imbalance in the three phases, d is the associated armature. The latter device can be set up, for example, according to patent 392638, in which a rotating magnetic field is created in the three legs by the operating current of the motor and which holds the armature, which has a high natural frequency of oscillation.

Sobald eine Stromungleichheit in den drei Phasen entsteht, oder eine Phase völlig ausfällt, lagert sich sofort dem Drehfeld ein Wechselfeld über, das den Anker in Schwingungen versetzt.As soon as there is a current imbalance in the three phases, or one phase fails completely, an alternating field is immediately superimposed on the rotating field, causing the armature to vibrate offset.

Durch die Bewegung der Anker b oder d oder b und d wird dann durch geeignete Einrichtungen, entweder mechanisch oder elektrisch, eine Ausschaltbewegung de.s Schalters e herbeigeführt.By moving armature b or d or b and d , suitable devices, either mechanically or electrically, bring about a switch-off movement of the switch e.

Claims (1)

Patent-Anspruch:Patent claim: Einrichtung zum selbsttätigen Auslösen des Schalters an Drehstrom-Motoren bei Überstrom und bei Ungleichheit der Belastung in den Phasenleitungen, dadurch gekennzeichnet, daß die Steuerung der Auslösevorrichtung des Schalters durch den Anker eines dreiphasigen Magnetsystems und durch den Anker eines einzigen, in der einen Phase mit der einen Spule des Magnetsystems in Reihe liegenden Überstromauslösers erfolgt.Device for the automatic triggering of the switch on three-phase motors at Overcurrent and unequal load in the phase lines, characterized in that the control of the Tripping device of the switch by the armature of a three-phase magnet system and through the anchor of a single one, in one phase with one Coil of the magnet system in series overcurrent release takes place.
DEP47658D 1924-03-01 1924-03-01 Device for automatic triggering of the switch on three-phase motors in the event of overcurrent and in the event of unequal load in the phase lines Expired DE426792C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP47658D DE426792C (en) 1924-03-01 1924-03-01 Device for automatic triggering of the switch on three-phase motors in the event of overcurrent and in the event of unequal load in the phase lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP47658D DE426792C (en) 1924-03-01 1924-03-01 Device for automatic triggering of the switch on three-phase motors in the event of overcurrent and in the event of unequal load in the phase lines

Publications (1)

Publication Number Publication Date
DE426792C true DE426792C (en) 1926-03-19

Family

ID=7382542

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP47658D Expired DE426792C (en) 1924-03-01 1924-03-01 Device for automatic triggering of the switch on three-phase motors in the event of overcurrent and in the event of unequal load in the phase lines

Country Status (1)

Country Link
DE (1) DE426792C (en)

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