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DE290434C - - Google Patents

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Publication number
DE290434C
DE290434C DENDAT290434D DE290434DA DE290434C DE 290434 C DE290434 C DE 290434C DE NDAT290434 D DENDAT290434 D DE NDAT290434D DE 290434D A DE290434D A DE 290434DA DE 290434 C DE290434 C DE 290434C
Authority
DE
Germany
Prior art keywords
soon
motor
auxiliary
switch
energy
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.)
Active
Application number
DENDAT290434D
Other languages
German (de)
Publication of DE290434C publication Critical patent/DE290434C/de
Active legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/066Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems characterised by the use of dynamo-electric machines

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Multiple Motors (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die Eigenart mancher Fabrikbetriebe erfordert es, daß die Arbeitsmaschinen auf keinen Fall stehenbleiben. Beispielsweise hängt bei chemischen Fabriken viel von der ununterbrochenen Wirksamkeit der Ventilatoren ab. Würden diese auch nur für kurze Zeit stillstehen, so würden nicht allein Störungen, sondern auch erhebliche Verluste an Material entstehen. Indessen muß immer damit gerechnet werden, daß der Strom für die Antriebsmotoren einmal ausbleibt. Besonders wenn er von fremden Zentralen bezogen wird, ist es unbequem, die sichere Aufrechterhaltung des Betriebes nicht selbst überwachen zu können.The peculiarity of some factories requires that the work machines on none Fall stand still. For example, in chemical factories a lot depends on uninterrupted operation Effectiveness of the fans. If they would stand still even for a short time, this would not only result in disruptions, but also considerable losses of material. However, it must always be expected that the power for the drive motors fails once. Especially if it is obtained from third-party headquarters it is inconvenient not to supervise the safe maintenance of the business yourself can.

Durch die Erfindung soll daher der von fremder Zentrale mit Energie versorgte Motor vor unbeabsichtigtem Stehenbleiben unter allen Umständen geschützt werden. Ein Ausführungsbeispiel ist in der Zeichnung dargestellt. Die Arbeitsmaschine α wird bei ordnungsmäßigem Betrieb durch den Drehstrommotor M angetrieben, der von einer Überlandzentrale mit Strom versorgt wird. Ein selbsttätiger Ausschalter 5 schaltet ihn von seinen Stromzuführungsleitungen selbsttätig ab, sobald die Leitungen nicht mehr genügende Spannung führen. Gleichzeitig mit dem Ausschalten von S wird ein Hilfsschalter h eingelegt, durch den ein Hilfsstromkreis geschlossen wird, der durch einen Elektromagneten den doppelpoligen Schalter s schließt. Dieser verbindet einen Hilfsmotor m mit den Polen der Reservebatterie b. The invention is therefore intended to protect the motor supplied with energy from an external control center from unintentional stopping under all circumstances. An exemplary embodiment is shown in the drawing. In normal operation, the work machine α is driven by the three-phase motor M , which is supplied with electricity from an intercity center. An automatic off switch 5 automatically switches it off from its power supply lines as soon as the lines no longer carry sufficient voltage. At the same time as S is switched off, an auxiliary switch h is inserted, by means of which an auxiliary circuit is closed, which closes the double-pole switch s by means of an electromagnet. This connects an auxiliary motor m to the poles of the reserve battery b.

Der Hilfsmotor m sitzt mit auf der Welle der Arbeitsmaschine α und läuft auch bei regelrechtem Betrieb dauernd mit. Er übernimmt daher, sobald der Schalter s den Strom schließt, den Antrieb ohne Zeitverlust. Da er schon die volle Geschwindigkeit besitzt, sind Anlaßwiderstände beim Einschalten unnötig. Seine Erregung kann gleichzeitig mit dem Anker eingeschaltet werden oder ganz kurze Zeit vorher zwecks Berücksichtigung der Selbstinduktion.The auxiliary motor m sits on the shaft of the working machine α and also runs continuously with normal operation. As soon as the switch s closes the power, it takes over the drive without any loss of time. Since it already has full speed, starting resistors are unnecessary when switching on. Its excitation can be switched on at the same time as the armature or a very short time beforehand in order to take into account the self-induction.

Claims (1)

Patent-Anspruch:Patent claim: Sicherung von elektromotorisch angetriebenen Arbeitsmaschinen gegen unbeabsichtigten Stillstand, gekennzeichnet durch einen gewöhnlich leer mitlaufenden Hilfsmotor (m), der selbsttätig an eine Reservestromquelle (b) angeschlossen wird, sobald die Energie für den Hauptantriebsmotor (M) ausbleibt.Securing of working machines driven by electric motors against unintentional standstill, characterized by an auxiliary motor (m) which usually runs idle, which is automatically connected to a reserve power source (b) as soon as the energy for the main drive motor (M) fails. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT290434D Active DE290434C (en)

Publications (1)

Publication Number Publication Date
DE290434C true DE290434C (en)

Family

ID=545395

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT290434D Active DE290434C (en)

Country Status (1)

Country Link
DE (1) DE290434C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761592A (en) * 1986-03-14 1988-08-02 Grundfos International A/S Electric motor with overload protection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761592A (en) * 1986-03-14 1988-08-02 Grundfos International A/S Electric motor with overload protection circuit

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