DE493280C - Polarized switch - Google Patents

Polarized switch

Info

Publication number
DE493280C
DE493280C DEA55113D DEA0055113D DE493280C DE 493280 C DE493280 C DE 493280C DE A55113 D DEA55113 D DE A55113D DE A0055113 D DEA0055113 D DE A0055113D DE 493280 C DE493280 C DE 493280C
Authority
DE
Germany
Prior art keywords
short circuit
relay
voltage
switch
event
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
DEA55113D
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.)
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
Publication date
Priority to DEA55113D priority Critical patent/DE493280C/en
Application granted granted Critical
Publication of DE493280C publication Critical patent/DE493280C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/08—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by reversal of dc

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Relay Circuits (AREA)

Description

Polarisierter Schalter Als Rückstromschnellschalter verwendet man zweckmäßig sogenannte Wippenrelais. Es ist bekannt, derartige Relais entweder mit permanenten Magneten oder finit fremderregten Spannungsspulen auszurüsten. Erstere haben den Nachteil, daß polarisierte permanente Magnete eine geringe Auslösekraft besitzen und im Lauf der Zeit ihre Intensität verlieren. Die Verwendung einer Hilfsquelle für die Speisung der Spannungsspule ist dagegen umständlich und nicht überall durchzuführen.Polarized switch A reverse current high-speed switch is used appropriately so-called rocker relay. It is known to use such relays either to equip permanent magnets or finite separately excited voltage coils. The former have the disadvantage that polarized permanent magnets have a low trigger force and lose their intensity over time. The use of a resource on the other hand, feeding the voltage coil is cumbersome and cannot be carried out everywhere.

Gemäß der Erfindung werden diese Nachteile dadurch vermieden, daß die Netzspannung unter Parallelschaltung eines induktiven Widerstandes zur Spannungsspule zur Speisung der Spannungsspule des Relais benutzt wird.According to the invention, these disadvantages are avoided in that the mains voltage with an inductive resistor connected in parallel to the voltage coil is used to supply the voltage coil of the relay.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung schematisch dargestellt. Auf dem Magnetkern a liegen die in Reihe und in Reihe mit den Schalterkontakten b, c liegenden Stromspulen d, e. f ist die Spannungsspule und g der als Wippe ausgebildete Anker des polarisierten Relais. Parallel zur Spannungsspule liegt der induktive Widerstand h. Dieser Widerstand hat den Zweck, das Verschwinden des durch die Spannungsspule gebildeten magnetischen Feldes nach Wegbleiben der Spannung bei einem Rückstromkurzschluß so zu verzögern, daß trotzdem eine Schnellauslösung stattfindet. Bei einem Rückstrom wird der Anker g angezogen, der über ein Gestänge den Schaltarm c in die Offenstellung bringt. Ein derartiges Relais kann nun dazu benutzt werden, daß das Öffnen des Schalters auch bei Vorwärtsstromkurzschluß mit etwas vergrößerter Abschaltzeit erfolgt. Zu diesem Zweck wird der Anker g im normalen Zustand so eingestellt, daß er sich außerhalb der magnetischen Mittellage befindet. Auf diese Weise wird das Rückstromrelais zu einem normalen Maximalstromrelais, das, nachdem das durch die Spannungsspule gebildete magnetische Feld Null geworden ist, bei einem Vorwärtsstromkurzschluß anspricht und den Schalter mit einer geringen Zeitverzögerung gegenüber Rückstromkurzschluß öffnet.An exemplary embodiment of the invention is shown schematically in the drawing. The current coils d, e lying in series and in series with the switch contacts b, c are located on the magnetic core a. f is the voltage coil and g is the armature of the polarized relay, designed as a rocker. The inductive resistance h is parallel to the voltage coil. The purpose of this resistance is to delay the disappearance of the magnetic field formed by the voltage coil after the voltage has ceased in the event of a reverse current short circuit so that rapid tripping still takes place. In the event of a reverse current, the armature g is attracted, which brings the switching arm c into the open position via a linkage. Such a relay can now be used to open the switch with a somewhat longer switch-off time even in the event of a forward current short circuit. For this purpose, the armature g is adjusted in the normal state so that it is located outside the magnetic central position. In this way, the reverse current relay becomes a normal maximum current relay which, after the magnetic field formed by the voltage coil has become zero, responds to a forward current short circuit and opens the switch with a small time delay in relation to reverse current short circuit.

Claims (2)

PATENTANSPRÜCHE: i. Polarisierter Schalter mit Strom- und Spannungsspule, dadurch gekennzeichnet, daß die Spannungsspule unter Parallelschaltung eines induktiven Widerstandes unmittelbar an der Netzspannung liegt, so daß eine Schnellauslösung auch bei momentanem Wegbleiben der Netzspannung bei einem Rückstromkurzschluß erfolgt. PATENT CLAIMS: i. Polarized switch with current and voltage coil, characterized in that the voltage coil under parallel connection of an inductive Resistance is directly connected to the mains voltage, so that a quick release takes place even if the mains voltage is momentarily absent in the event of a reverse current short circuit. 2. Schalter nach Anspruch i, dadurch gekennzeichnet, daß der Relaisanker in seiner Normalstellung außerhalb der durch die Spannungsspule erzeugten Mittellage gehalten ist, so daß das Relais als Maximalrelais bei einem Vorwärtsstromkurzschluß mit einer geringen Zeitverzögerung gegenüber einem Rückstromkurzschluß anspricht.2. Switch according to claim i, characterized in that the relay armature in its Normal position held outside the central position generated by the tension coil so that the relay acts as a maximum relay in the event of a forward current short circuit with a responds to a short time delay in relation to a reverse current short circuit.
DEA55113D Polarized switch Expired DE493280C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA55113D DE493280C (en) Polarized switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA55113D DE493280C (en) Polarized switch

Publications (1)

Publication Number Publication Date
DE493280C true DE493280C (en) 1930-03-06

Family

ID=6939833

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA55113D Expired DE493280C (en) Polarized switch

Country Status (1)

Country Link
DE (1) DE493280C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936651A2 (en) * 2006-12-20 2008-06-25 General Electric Company Current trip unit for circuit breaker
DE102009059839A1 (en) 2009-12-21 2011-06-22 Eaton Industries GmbH, 53115 Device for use with e.g. electrical switching device for detecting reversal of current direction in photovoltaic strand, has magnetically polarized armature operatively connected with actuator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936651A2 (en) * 2006-12-20 2008-06-25 General Electric Company Current trip unit for circuit breaker
EP1936651A3 (en) * 2006-12-20 2009-03-11 General Electric Company Current trip unit for circuit breaker
US7515025B2 (en) 2006-12-20 2009-04-07 General Electric Company Current trip unit for circuit breaker
US8183964B2 (en) 2006-12-20 2012-05-22 General Electric Company Current trip unit for circuit breaker
DE102009059839A1 (en) 2009-12-21 2011-06-22 Eaton Industries GmbH, 53115 Device for use with e.g. electrical switching device for detecting reversal of current direction in photovoltaic strand, has magnetically polarized armature operatively connected with actuator

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