EP0412401A2 - High-speed circuit breaker - Google Patents

High-speed circuit breaker Download PDF

Info

Publication number
EP0412401A2
EP0412401A2 EP90114614A EP90114614A EP0412401A2 EP 0412401 A2 EP0412401 A2 EP 0412401A2 EP 90114614 A EP90114614 A EP 90114614A EP 90114614 A EP90114614 A EP 90114614A EP 0412401 A2 EP0412401 A2 EP 0412401A2
Authority
EP
European Patent Office
Prior art keywords
elongator
roller
drive roller
switch according
quick switch
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.)
Withdrawn
Application number
EP90114614A
Other languages
German (de)
French (fr)
Other versions
EP0412401A3 (en
Inventor
Fritz Dipl. Pohl
Wilfried Jaehner
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0412401A2 publication Critical patent/EP0412401A2/en
Publication of EP0412401A3 publication Critical patent/EP0412401A3/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/127—Automatic release mechanisms with or without manual release using piezoelectric, electrostrictive or magnetostrictive trip units
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H01H2071/506—Latching devices between operating and release mechanism using balls or rollers in the latching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H55/00—Magnetostrictive relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H57/00—Electrostrictive relays; Piezoelectric relays

Definitions

  • the invention relates to a quick switch with a roller lock.
  • the short-circuit early detection and microprocessor-controlled quick release enables an effective current limitation and high selectivity in electrical distributions.
  • Externally controllable quick releases are required as actuators, which transmit the necessary kinetic energy to the movable contacts of the switch.
  • Common quick releases are, for example, magnetic releases in the embodiment as submersible or also hinged anchors and spring drives.
  • the tripping times of these systems are around 1 ms, since the accelerated movement of magnet armatures or pawls provides only a short distance in the initial phase.
  • the invention is based on the object of specifying an embodiment of a current-limiting high-speed switch with which the tripping time can be shortened further.
  • Energy storage devices for the drive of current-limiting quick switches generally contain spring systems.
  • the pneumatic, hydraulic and electromagnetic drives commonly used in switch technology are relatively slow.
  • the drive forces must be held by the locking mechanism of the switch lock continuously in the switched-on state of the quick switch and then released in less than 1 ms in the case of short switching times, for example with short-circuiting devices.
  • Particularly suitable for picking up large items Driving forces and their quick release after release are roller locks, in which rollers arranged side by side absorb the driving forces up to several tons. Only a relatively low release force is required to release the large driving force. To quickly release the lock, the release force occurs in a pulsed manner and forces the rollers to move mechanically.
  • the invention is now based on the knowledge that particularly fast-switching triggers can be implemented with these known roller locks in conjunction with elongators for triggering the latch mechanism.
  • the invention thus consists in the characterizing feature of claim 1.
  • Such elongators have a small stroke of, for example, 100 to 200 ⁇ m and a large force of the order of about 1 t, as well as a mechanical energy density of approximately 35 mJ / cm3 and a very short reaction time, which generally does not significantly exceed 100 ⁇ s and in particular can be less than 50 ⁇ s.
  • Both piezoelectric and magnetostrictive elongators can be provided, which either recharge in a working current version when a charging voltage is applied and thereby lengthen and by this elongation E trigger the spring energy store via the pawl mechanism, or which discharge in a quiescent current version when an applied charging voltage is interrupted and thereby shorten and release the spring mechanism and thus the drive roller through this shortening path.
  • FIG. 1 schematically illustrates an embodiment of a quick switch in which a compression spring is provided as the spring force accumulator.
  • Figure 2 shows an embodiment of the quick switch with a tension spring as a spring force accumulator.
  • FIG. 3 An overall representation of a further embodiment of the quick switch is shown in FIG. 3.
  • FIG. 4 a quick switch is shown as a section.
  • FIG. 5 schematically illustrates a variant of the embodiment according to FIG. 1 as a top view and in FIG. 6 as a side view.
  • a ratchet roller with 2 In the embodiment of a quick-action switch according to FIG. 1 with a roller lock and an elongator for unlocking the spring force accumulator, a ratchet roller with 2, a drive roller with 4, a spring force accumulator with 6, a movable contact with 8, a fixed contact with 9 and an elongator with 10 are designated .
  • the direction of movement of the ratchet roller 2 is indicated by an arrow indicated by 12.
  • a guide for the movement of the ratchet roller 2 and the drive roller 4 and the socket of the elongator 10 are only indicated as walls in the figure and are designated by 14.
  • the drive roller 4 is non-positively connected to the movable contact 8 of the switch, which is only indicated in the figure by a dash-dotted line of action 18.
  • the spring force K F of the spring force accumulator 6 is indicated by an arrow in the figure.
  • a voltage is applied to the elongator 10 in this working current embodiment in a surge-like manner, ie a voltage with a steep end flank which brings the elongator 10 to charge; the elongator 10 is thereby lengthened by the elongation E, which is shown enlarged in the figure for clarification and in the practical embodiment can be, for example, approximately 50 to 200 ⁇ m.
  • the pawl roller 2 is repelled by the force K E and initially overcomes the path s to the unstable position in which the pawl roller 2 and the drive roller 4 in the direction of the spring force K F lie one behind the other.
  • the drive roller 4 is moved in the direction of the spring force K F by the force K F of the spring force accumulator 6 and at the same time the ratchet roller is displaced.
  • the movable contact 8 of the switch is opened with the movement of the drive roller 4.
  • the opening path of the switching contact 8 is approximately as large as the diameter of the ratchet roller 2, for example at least 10 mm.
  • the elongator 10 shown schematically in FIG. 1 can be, for example, a piezoelectric elongator that works according to the longitudinal effect and is extended by the predetermined elongation E when a voltage is applied after charging. This extension is used to move the ratchet roller 2 in the direction of arrow 12. If the working voltage on the elongator 6 is interrupted, the elongator is shortened again by the amount of elongation and returns to its original length.
  • a magnetostrictive elongator 10 can also be provided, which lengthens when a magnetic field is applied.
  • the voltage source for this magnetic field is then switched on.
  • the elongator 10 is thus suddenly extended by its elongation E.
  • the ratchet roller 2 is moved in the direction of the arrow 12 and the spring force accumulator 6 is triggered and the contact 8 is opened with the movement of the drive roller 4.
  • a quiescent current operation of the elongator 10 is provided, which is due to an operating voltage not shown in the figure and is extended by a predetermined elongation E and presses with a sufficient force on the ratchet roller 2, which presses the drive roller 4 in its stable position shown, the cannot be changed by the spring force K F of the spring force accumulator 6.
  • the drive roller 4 is located by the path s below its unstable position, in which the ratchet roller 2 and the drive roller 4 are arranged one behind the other in the direction of the force K F of the elongator 10. With the interruption of the voltage applied to the elongator 10, the elongator 10 is discharged.
  • the ratchet roller 2 Due to its shortening by the elongation E, which is shown considerably enlarged for clarity in the figure, the ratchet roller 2 is displaced by the lateral component of the spring force K F and the drive roller 4, which is non-positively connected to the movable contact 8 of the switch moved up by the spring force accumulator 6 and the contacts 8 and 9 are opened.
  • a comparatively large spring force K F of the spring force accumulator 6 results in a comparatively large path of the drive roller 4 and thus a correspondingly large opening path of the movable contact 8.
  • the spring force K F can be approximately a fraction s / d of the blocking force K B, E of the elongator (K F s / d. K B, E ).
  • the ratchet roller 2, the drive roller 4 and the elongator 10 are also connected to one another in a non-positive and positive manner.
  • the spring force accumulator 6 acts via a shaft 22 and a lever 24, which is rotatably mounted about the axis 26 of the drive roller 4, on a switching shaft 28 for the movable contacts 8 of the quick switch, to which the fixed contacts 9 are assigned.
  • the spring force accumulator 6 is also released by shortening the elongator 10 after it has been discharged by interrupting an applied charging voltage.
  • the lever 24 thus transmits a corresponding rotary movement to the control shaft 28 and the movable contacts 8 are opened.
  • an elongator 10 is also provided, in which the elongator 10 returns to its original length after the interruption of an applied charging voltage, which is indicated in the figure by a negative force K E.
  • K E an applied charging voltage
  • the drive roller 4 is released and pulled up by the force K F of the spring force accumulator 6.
  • a lever 25 is provided which acts directly on the movable contact 8, which bears on the fixed contact 9 in the closed state. It is therefore not a rotational movement, but a tensile force is transmitted from the lever 25 to the movable contact 8.
  • the ratchet roller 2 is provided with guide extensions.
  • the guidance takes place starting from FIG. 1 through guide walls 15 such that the drive roller 4 can move past the latching point of the latch roller 2.
  • the drive path S A of the drive roller 4 can be considerably larger than the diameter D of the ratchet roller 2.
  • the force of a spring force accumulator is provided for driving the drive roller 4.
  • the driving force can also be supplied by another energy accumulator, for example by a gas pressure accumulator or also by a magnetic energy accumulator that contains a permanent magnet.

Landscapes

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

Abstract

The high-speed circuit breaker is provided with a roller lock which contains a latching roller and a drive roller. According to the invention, an elongator (10) is provided to release the latching mechanism. This high-speed circuit breaker can be used in switching devices for early identification of short-circuits and for microprocessor-controlled high-speed releasing. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Schnellschalter mit einem Rollenschloß.The invention relates to a quick switch with a roller lock.

Die Kurzschlußfrüherkennung und mikroprozessorgesteuerte Schnellauslösung ermöglicht in elektrischen Verteilungen eine wirkungsvolle Strombegrenzung und hohe Selektivität. Als Akto­ren werden dazu extern ansteuerbare Schnellauslöser benötigt, welche die notwendige kinetische Energie auf die beweglichen Kontakte des Schalters übertragen.The short-circuit early detection and microprocessor-controlled quick release enables an effective current limitation and high selectivity in electrical distributions. Externally controllable quick releases are required as actuators, which transmit the necessary kinetic energy to the movable contacts of the switch.

Gebräuchliche Schnellauslöser sind beispielsweise Magnetauslö­ser in der Ausführungsform als Tauch- oder auch Klappanker sowie Federantriebe. Die Auslösezeiten dieser Systeme liegen etwa bei 1 ms, da die beschleunigte Bewegung von Magnetankern oder Klinken in der Anfangsphase nur einen geringen Weg lie­fert.Common quick releases are, for example, magnetic releases in the embodiment as submersible or also hinged anchors and spring drives. The tripping times of these systems are around 1 ms, since the accelerated movement of magnet armatures or pawls provides only a short distance in the initial phase.

Der Erfindung liegt nun die Aufgabe zugrunde, eine Ausführungs­form eines strombegrenzenden Schnellschalters anzugeben, mit dem die Auslösezeit weiter verkürzt werden kann.The invention is based on the object of specifying an embodiment of a current-limiting high-speed switch with which the tripping time can be shortened further.

Kraftspeicher für den Antrieb von strombegrenzenden Schnell­schaltern enthalten im allgemeinen Federsysteme. Die in der Schaltertechnik üblicherweise verwendeten pneumatischen, hy­draulischen und elektromagnetischen Antriebe sind verhältnis­mäßig träge. Die Antriebskräfte müssen im eingeschalteten Zu­stand des Schnellschalters vom Verriegelungsmechanismus des Schalterschlosses dauernd gehalten und dann bei kurzen Schalt­zeiten, beispielsweise bei Kurzschließern, in weniger als 1 ms freigegeben werden. Besonders geeignet zur Aufnahme großer An­ triebskräfte und zu ihrer schnellen Freigabe nach der Auslösung sind Rollenschlösser, bei denen nebeneinander angeordnete Rol­len die Antriebskräfte bis zu mehreren Tonnen aufnehmen. Zur Freigabe der großen Antriebskraft ist nur eine verhältnismäßig geringe Auslösekraft erforderlich. Zum schnellen Auslösen der Verriegelung tritt die Auslösekraft impulsartig auf und er­zwingt eine mechanische Verschiebung der Rollen.Energy storage devices for the drive of current-limiting quick switches generally contain spring systems. The pneumatic, hydraulic and electromagnetic drives commonly used in switch technology are relatively slow. The drive forces must be held by the locking mechanism of the switch lock continuously in the switched-on state of the quick switch and then released in less than 1 ms in the case of short switching times, for example with short-circuiting devices. Particularly suitable for picking up large items Driving forces and their quick release after release are roller locks, in which rollers arranged side by side absorb the driving forces up to several tons. Only a relatively low release force is required to release the large driving force. To quickly release the lock, the release force occurs in a pulsed manner and forces the rollers to move mechanically.

Die Erfindung beruht nun auf der Erkenntnis, daß sich mit die­sen bekannten Rollenschlössern in Verbindung mit Elongatoren zur Auslösung des Klinkenmechanismus besonders schnellschalten­de Auslöser verwirklichen lassen. Die Erfindung besteht somit im kennzeichnenden Merkmal des Anspruches 1. Solche Elongatoren haben einen kleinen Hub von beispielsweise 100 bis 200 µm und eine große Kraft in der Größenordnung von etwa 1 t sowie eine mechanische Energiedichte von annähernd 35 mJ/cm³ und eine sehr kurze Reaktionszeit, die im allgemeinen 100 µs nicht wesentlich überschreitet und insbesondere weniger als 50 µs betragen kann.The invention is now based on the knowledge that particularly fast-switching triggers can be implemented with these known roller locks in conjunction with elongators for triggering the latch mechanism. The invention thus consists in the characterizing feature of claim 1. Such elongators have a small stroke of, for example, 100 to 200 µm and a large force of the order of about 1 t, as well as a mechanical energy density of approximately 35 mJ / cm³ and a very short reaction time, which generally does not significantly exceed 100 µs and in particular can be less than 50 µs.

Es können sowohl piezoelektrische als auch magnetostriktive Elongatoren vorgesehen sein, die entweder in einer Arbeits­stromausführung beim Anlegen einer Ladespannung sich aufladen und dadurch verlängern und durch diese Elongation E den Feder­kraftspeicher über den Klinkenmechanismus auslösen oder die in einer Ruhestromausführung beim Unterbrechen einer angelegten Ladespannung sich entladen und dadurch verkürzen und durch diesen Verkürzungsweg den Federkraftspeicher und damit die An­triebsrolle freigeben.Both piezoelectric and magnetostrictive elongators can be provided, which either recharge in a working current version when a charging voltage is applied and thereby lengthen and by this elongation E trigger the spring energy store via the pawl mechanism, or which discharge in a quiescent current version when an applied charging voltage is interrupted and thereby shorten and release the spring mechanism and thus the drive roller through this shortening path.

Zur weiteren Erläuterung der Erfindung wird auf die Zeichnung Bezug genommen, in deren Figur 1 eine Ausführungsform eines Schnellschalters schematisch veranschaulicht ist, bei dem als Federkraftspeicher eine Druckfeder vorgesehen ist. Figur 2 zeigt eine Ausführungsform des Schnellschalters mit einer Zug­feder als Federkraftspeicher. Eine Gesamtdarstellung einer wei­teren Ausführungsform des Schnellschalters zeigt Figur 3. In Figur 4 ist ein Schnellschalter als Schnitt dargestellt. In Figur 5 ist eine Variante der Ausführungsform gemäß Figur 1 als Draufsicht und in Figur 6 als Seitenansicht schematisch veran­schaulicht.To further explain the invention, reference is made to the drawing, in which FIG. 1 schematically illustrates an embodiment of a quick switch in which a compression spring is provided as the spring force accumulator. Figure 2 shows an embodiment of the quick switch with a tension spring as a spring force accumulator. An overall representation of a further embodiment of the quick switch is shown in FIG. 3. In FIG. 4, a quick switch is shown as a section. FIG. 5 schematically illustrates a variant of the embodiment according to FIG. 1 as a top view and in FIG. 6 as a side view.

In der Ausführungsform eines Schnellschalters gemäß Figur 1 mit einem Rollenschloß und einem Elongator zur Entriegelung des Fe­derkraftspeichers sind eine Klinkenrolle mit 2, eine Antriebs­rolle mit 4, ein Federkraftspeicher mit 6, ein beweglicher Kon­takt mit 8, ein Festkontakt mit 9 und ein Elongator mit 10 be­zeichnet. Die Bewegungsrichtung der Klinkenrolle 2 ist durch einen mit 12 bezeichneten Richtungspfeil angedeutet. Eine Füh­rung für die Bewegung der Klinkenrolle 2 und der Antriebsrolle 4 sowie die Fassung des Elongators 10 sind in der Figur ledig­lich als Wände angedeutet und mit 14 bezeichnet.In the embodiment of a quick-action switch according to FIG. 1 with a roller lock and an elongator for unlocking the spring force accumulator, a ratchet roller with 2, a drive roller with 4, a spring force accumulator with 6, a movable contact with 8, a fixed contact with 9 and an elongator with 10 are designated . The direction of movement of the ratchet roller 2 is indicated by an arrow indicated by 12. A guide for the movement of the ratchet roller 2 and the drive roller 4 and the socket of the elongator 10 are only indicated as walls in the figure and are designated by 14.

Die Antriebsrolle 4 ist mit dem beweglichen Kontakt 8 des Schalters kraftschlüssig verbunden, was in der Figur lediglich durch eine strichpunktierte Wirkungslinie 18 angedeutet ist. Die Federkraft KF des Federkraftspeichers 6 ist in der Figur durch einen Pfeil angedeutet.The drive roller 4 is non-positively connected to the movable contact 8 of the switch, which is only indicated in the figure by a dash-dotted line of action 18. The spring force K F of the spring force accumulator 6 is indicated by an arrow in the figure.

Zur Auslösung des Federkraftspeichers 6 wird an den Elongator 10 in dieser Arbeitsstrom-Ausführung stoßartig eine Spannung angelegt, d.h. eine Spannung mit steiler Stirnflanke, die den Elongator 10 zur Aufladung bringt; dadurch wird der Elongator 10 um die Elongation E, die in der Figur zur Verdeutlichung vergrößert dargestellt ist und in der praktischen Ausführungs­form beispielsweise etwa 50 bis 200 µm betragen kann, verlän­gert. Durch die Kraft KE wird die Klinkenrolle 2 abgestoßen und überwindet zunächst den Weg s bis zur labilen Lage, in der die Klinkenrolle 2 und die Antriebsrolle 4 in Richtung der Feder­ kraft KF hintereinanderliegen. Sobald diese labile Lage über­wunden ist, wird durch die Kraft KF des Federkraftspeichers 6 die Antriebsrolle 4 in Richtung der Federkraft KF bewegt und zugleich die Klinkenrolle verdrängt. Zugleich wird mit der Be­wegung der Antriebsrolle 4 auch der bewegliche Kontakt 8 des Schalters geöffnet. Der Öffnungsweg des Schaltkontakts 8 ist etwa so groß wie der Durchmesser der Klinkenrolle 2 von bei­spielsweise wenigstens 10 mm.In order to trigger the spring force accumulator 6, a voltage is applied to the elongator 10 in this working current embodiment in a surge-like manner, ie a voltage with a steep end flank which brings the elongator 10 to charge; the elongator 10 is thereby lengthened by the elongation E, which is shown enlarged in the figure for clarification and in the practical embodiment can be, for example, approximately 50 to 200 μm. The pawl roller 2 is repelled by the force K E and initially overcomes the path s to the unstable position in which the pawl roller 2 and the drive roller 4 in the direction of the spring force K F lie one behind the other. As soon as this unstable situation is overcome, the drive roller 4 is moved in the direction of the spring force K F by the force K F of the spring force accumulator 6 and at the same time the ratchet roller is displaced. At the same time, the movable contact 8 of the switch is opened with the movement of the drive roller 4. The opening path of the switching contact 8 is approximately as large as the diameter of the ratchet roller 2, for example at least 10 mm.

Der in Figur 1 schematisch dargestellte Elongator 10 kann bei­spielsweise ein piezoelektrischer Elongator sein, der nach dem Längseffekt arbeitet und beim Anlegen einer Spannung nach der Aufladung sich um die vorbestimmte Elongation E verlängert. Diese Verlängerung wird ausgenutzt, um die Klinkenrolle 2 in Richtung des Pfeiles 12 zu bewegen. Wird die Arbeitsspannung am Elongator 6 unterbrochen, so verkürzt sich der Elongator wieder um den Betrag der Elongation und kehrt zu seiner Ausgangslänge zurück.The elongator 10 shown schematically in FIG. 1 can be, for example, a piezoelectric elongator that works according to the longitudinal effect and is extended by the predetermined elongation E when a voltage is applied after charging. This extension is used to move the ratchet roller 2 in the direction of arrow 12. If the working voltage on the elongator 6 is interrupted, the elongator is shortened again by the amount of elongation and returns to its original length.

In einer besonderen Ausführungsform des Schnellschalters kann auch ein magnetostriktiver Elongator 10 vorgesehen sein, der sich beim Anlegen eines Magnetfeldes verlängert. Zum Auslösen des Schalters, d.h. zur Bewegung der Klinkenrolle 2, wird dann die Spannungsquelle für dieses Magnetfeld eingeschaltet. Damit verlängert sich der Elongator 10 stoßartig um seine Elongation E. Durch diese Stoßbewegung wird die Klinkenrolle 2 in Richtung des Pfeils 12 bewegt und der Federkraftspeicher 6 ausgelöst und mit der Bewegung der Antriebsrolle 4 der Kontakt 8 geöffnet.In a special embodiment of the quick switch, a magnetostrictive elongator 10 can also be provided, which lengthens when a magnetic field is applied. To trigger the switch, i.e. to move the ratchet roller 2, the voltage source for this magnetic field is then switched on. The elongator 10 is thus suddenly extended by its elongation E. By means of this impact movement, the ratchet roller 2 is moved in the direction of the arrow 12 and the spring force accumulator 6 is triggered and the contact 8 is opened with the movement of the drive roller 4.

In der Ausführungsform eines Schnellschalters gemäß Figur 2 ist ein Ruhestrombetrieb des Elongators 10 vorgesehen, der an einer in der Figur nicht dargestellten Arbeitsspannung liegt und um eine vorbestimmte Elongation E verlängert ist und mit einer ausreichenden Kraft auf die Klinkenrolle 2 drückt, welche die Antriebsrolle 4 in ihrer dargestellten stabilen Lage hält, die von der Federkraft KF des Federkraftspeichers 6 nicht verändert werden kann. Die Antriebsrolle 4 befindet sich um den Weg s unterhalb ihrer labilen Lage, in der die Klinkenrolle 2 und die Antriebsrolle 4 in Richtung der Kraft KF des Elongators 10 hin­tereinander angeordnet sind. Mit der Unterbrechung der am Elon­gator 10 anliegenden Spannung wird der Elongator 10 entladen. Durch seine Verkürzung um die Elongation E, die zur Verdeutli­chung in der Figur erheblich vergrößert dargestellt ist, wird die Klinkenrolle 2 durch die seitliche Komponente der Feder­kraft KF verdrängt und die Antriebsrolle 4, die mit dem beweg­lichen Kontakt 8 des Schalters kraftschlüssig verbunden ist, wird durch den Federkraftspeicher 6 nach oben bewegt und die Kontakte 8 und 9 werden geöffnet. In dieser Ausführungsform erhält man zu einer verhältnismäßig großen Federkraft KF des Federkraftspeichers 6 einen verhältnismäßig großen Weg der Antriebsrolle 4 und damit einen entsprechend großen Öffnungsweg des beweglichen Kontakts 8. Bei gleichem Durchmesser d der Rollen 2 und 4 kann die Federkraft KF annähernd den Bruchteil s/d der Blockierkraft KB,E des Elongators erreichen (KF

Figure imgb0001
s/d. KB,E).In the embodiment of a quick switch according to FIG. 2, a quiescent current operation of the elongator 10 is provided, which is due to an operating voltage not shown in the figure and is extended by a predetermined elongation E and presses with a sufficient force on the ratchet roller 2, which presses the drive roller 4 in its stable position shown, the cannot be changed by the spring force K F of the spring force accumulator 6. The drive roller 4 is located by the path s below its unstable position, in which the ratchet roller 2 and the drive roller 4 are arranged one behind the other in the direction of the force K F of the elongator 10. With the interruption of the voltage applied to the elongator 10, the elongator 10 is discharged. Due to its shortening by the elongation E, which is shown considerably enlarged for clarity in the figure, the ratchet roller 2 is displaced by the lateral component of the spring force K F and the drive roller 4, which is non-positively connected to the movable contact 8 of the switch moved up by the spring force accumulator 6 and the contacts 8 and 9 are opened. In this embodiment, a comparatively large spring force K F of the spring force accumulator 6 results in a comparatively large path of the drive roller 4 and thus a correspondingly large opening path of the movable contact 8. With the same diameter d of the rollers 2 and 4, the spring force K F can be approximately a fraction s / d of the blocking force K B, E of the elongator (K F
Figure imgb0001
s / d. K B, E ).

In der perspektivischen Ansicht gemäß Figur 3 sind ebenfalls die Klinkenrolle 2, die Antriebsrolle 4 und der Elongator 10 kraft- und formschlüssig miteinander verbunden. Der Federkraft­speicher 6 wirkt über eine Welle 22 und einen Hebel 24, der um die Achse 26 der Antriebsrolle 4 drehbar gelagert ist, auf eine Schaltwelle 28 für die beweglichen Kontakte 8 des Schnellschal­ters, denen die Festkontakte 9 zugeordnet sind.In the perspective view according to FIG. 3, the ratchet roller 2, the drive roller 4 and the elongator 10 are also connected to one another in a non-positive and positive manner. The spring force accumulator 6 acts via a shaft 22 and a lever 24, which is rotatably mounted about the axis 26 of the drive roller 4, on a switching shaft 28 for the movable contacts 8 of the quick switch, to which the fixed contacts 9 are assigned.

In dieser Ausführungsform wird der Federkraftspeicher 6 eben­falls durch Verkürzung des Elongators 10 nach seiner Entladung durch Unterbrechen einer angelegten Ladespannung freigegeben. Eine Kraftkomponente des Federkraftspeichers 6, die von der Achse 26 der Antriebsrolle 4 auf die Klinkenrolle 2 wirkt, schiebt diese Klinkenrolle 2 um den Verkürzungsweg des Elonga­ tors 10 beiseite und die Antriebsrolle 4 wird vom Federkraft­speicher 6 angezogen. Damit überträgt der Hebel 24 eine ent­sprechende Drehbewegung auf die Schaltwelle 28 und die beweg­lichen Kontakte 8 werden geöffnet.In this embodiment, the spring force accumulator 6 is also released by shortening the elongator 10 after it has been discharged by interrupting an applied charging voltage. A force component of the spring force accumulator 6, which acts on the ratchet roller 2 from the axis 26 of the drive roller 4, pushes this ratchet roller 2 by the shortening path of the elonga tors 10 aside and the drive roller 4 is attracted by the spring energy store 6. The lever 24 thus transmits a corresponding rotary movement to the control shaft 28 and the movable contacts 8 are opened.

In der Ausführungsform des Schnellschalters gemäß Figur 4 ist ebenfalls ein Elongator 10 vorgesehen, bei dem nach der Unter­brechung einer angelegten Ladespannung der Elongator 10 wieder zu seiner ursprünglichen Länge zurückkehrt, was in der Figur durch eine negative Kraft KE angedeutet ist. Damit wird die Antriebsrolle 4 freigegeben und durch die Kraft KF des Feder­kraftspeichers 6 nach oben gezogen. In dieser Ausführungsform ist ein Hebel 25 vorgesehen, der direkt auf den beweglichen Kontakt 8 wirkt, der im geschlossenen Zustand am Festkontakt 9 anliegt. Es wird somit nicht eine Drehbewegung, sondern eine Zugkraft vom Hebel 25 auf den beweglichen Kontakt 8 übertragen.In the embodiment of the high-speed switch according to FIG. 4, an elongator 10 is also provided, in which the elongator 10 returns to its original length after the interruption of an applied charging voltage, which is indicated in the figure by a negative force K E. Thus, the drive roller 4 is released and pulled up by the force K F of the spring force accumulator 6. In this embodiment, a lever 25 is provided which acts directly on the movable contact 8, which bears on the fixed contact 9 in the closed state. It is therefore not a rotational movement, but a tensile force is transmitted from the lever 25 to the movable contact 8.

Unter Umständen kann es zweckmäßig sein, den Federkraftspeicher 6 gemäß Figur 4 nicht auf die Antriebsrolle 4, sondern direkt auf den Hebelarm des beweglichen Kontaktes 8 einwirken zu las­sen.Under certain circumstances, it may be expedient not to let the spring force accumulator 6 according to FIG. 4 act on the drive roller 4, but rather directly on the lever arm of the movable contact 8.

In einer besonderen Ausführungsform der Klinkenrolle gemäß den Figuren 5 und 6 ist die Klinkenrolle 2 mit Führungsfortsätzen versehen. In dieser Ausführungsform erfolgt die Führung aus­gehend von der Figur 1 durch Führungswände 15 derart, daß sich die Antriebsrolle 4 an der Verklinkungsstelle der Klinkenrolle 2 vorbeibewegen kann. Der Antriebsweg SA der Antriebsrolle 4 kann dadurch gemäß Figur 6 erheblich größer sein als der Durch­messer D der Klinkenrolle 2.In a special embodiment of the ratchet roller according to FIGS. 5 and 6, the ratchet roller 2 is provided with guide extensions. In this embodiment, the guidance takes place starting from FIG. 1 through guide walls 15 such that the drive roller 4 can move past the latching point of the latch roller 2. 6, the drive path S A of the drive roller 4 can be considerably larger than the diameter D of the ratchet roller 2.

Im Ausführungsbeispiel ist zum Antrieb der Antriebsrolle 4 die Kraft eines Federkraftspeichers vorgesehen. Die Antriebskraft kann jedoch auch von einem anderen Kraftspeicher geliefert wer­den, beispielsweise von einem Gasdruckspeicher oder auch von einem Magnetkraftspeicher, der einen Permanentmagneten enthält.In the exemplary embodiment, the force of a spring force accumulator is provided for driving the drive roller 4. However, the driving force can also be supplied by another energy accumulator, for example by a gas pressure accumulator or also by a magnetic energy accumulator that contains a permanent magnet.

Claims (12)

1. Schnellschalter mit einem Rollenschloß, dadurch gekennzeichnet, daß zur Auslösung des Schalters ein Elongator (10) vorgesehen ist.1. Quick switch with a roller lock, characterized in that an elongator (10) is provided for triggering the switch. 2. Schnellschalter nach Anspruch 1, gekennzeich­net durch einen piezoelektrischen Elongator (10).2. Quick switch according to claim 1, characterized by a piezoelectric elongator (10). 3. Schnellschalter nach Anspruch 1, gekennzeich­net durch einen magnetostriktiven Elongator (10).3. Quick switch according to claim 1, characterized by a magnetostrictive elongator (10). 4. Schnellschalter nach Anspruch 1, gekennzeich­net durch folgende Merkmale: a) mit wenigstens einem beweglichen Kontakt (8) ist eine An­triebsrolle (4) kraftschlüssig verbunden, b) zur Bewegung der Antriebsrolle (4) ist ein Kraftspeicher (6) vorgesehen, dessen Kraft KF wenigstens annähernd senkrecht zur Achse der Antriebsrolle (4) gerichtet ist, c) die Antriebsrolle (4) ist mit einer achsparallel angeordne­ten Klinkenrolle (2) formschlüssig verbunden, d) zur Entklinkung ist die Formänderung des Elongators (10) vorgesehen, der mit dem Mantel der Klinkenrolle (2) form­und kraftschlüssig verbunden ist und dessen Kraft KE an­nähernd senkrecht zur Achse der Klinkenrolle (2) gerichtet ist. 4. Fast switch according to claim 1, characterized by the following features: a) a drive roller (4) is non-positively connected to at least one movable contact (8), b) an energy accumulator (6) is provided for moving the drive roller (4), the force K F of which is directed at least approximately perpendicular to the axis of the drive roller (4), c) the drive roller (4) is positively connected to an axially parallel ratchet roller (2), d) for unlatching the change in shape of the elongator (10) is provided, which is connected to the jacket of the ratchet roller (2) in a positive and non-positive manner and whose force K E is approximately perpendicular to the axis of the ratchet roller (2). 5. Schnellschalter nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Klinkenrolle (2) mit Führungsfortsätzen (16, 17) versehen ist und die hierfür vor­gesehenen Führungen (15) die Bewegung der Antriebsrolle (2) nicht begrenzen.5. Quick switch according to claim 2 or 3, characterized in that the ratchet roller (2) is provided with guide extensions (16, 17) and the guides (15) provided for this purpose do not limit the movement of the drive roller (2). 6. Schnellschalter nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß ein Elongator (10) in Ar­ beitsstromausführung vorgesehen ist, dessen Elongation E die Auslösekraft KE liefert (Figur 1).6. Quick switch according to claim 2 or 3, characterized in that an elongator (10) in Ar beitsstromausführung is provided, the elongation E provides the triggering force K E (Figure 1). 7. Schnellschalter nach Anspruch 2, dadurch ge­kennzeichnet, daß ein Elongator (10) in Ruhe­stromausführung vorgesehen ist, bei dem zur Auslösung eine Ladespannung abschaltbar ist, die eine Verkürzung des Elonga­tors (10) um die Elongation E bewirkt (Figur 2).7. Quick switch according to claim 2, characterized in that an elongator (10) is provided in the quiescent current version, in which a charging voltage can be switched off for triggering, which causes a shortening of the elongator (10) by the elongation E (Figure 2). 8. Schnellschalter nach Anspruch 5, dadurch ge­kennzeichnet, daß als Kraftspeicher (6) ein Fe­derkraftspeicher vorgesehen ist.8. Quick switch according to claim 5, characterized in that a spring force accumulator is provided as the energy accumulator (6). 9. Schnellschalter nach Anspruch 8, dadurch ge­kennzeichnet, daß als Kraftspeicher (6) ein Fe­derelement vorgesehen ist, dessen Federkraft KF senkrecht zur Achse der Antriebsrolle (2) gerichtet ist.9. Quick switch according to claim 8, characterized in that a spring element is provided as the energy store (6), the spring force K F is directed perpendicular to the axis of the drive roller (2). 10. Schnellschalter nach Anspruch 8, dadurch ge­kennzeichnet, daß als Kraftspeicher (6) ein Fe­derelement vorgesehen ist, dessen Federkraft KF auf die An­triebsrolle (4) wirkt.10. Quick switch according to claim 8, characterized in that a spring element is provided as the energy store (6), the spring force K F acts on the drive roller (4). 11. Schnellschalter nach Anspruch 8, dadurch ge­kennzeichnet, daß als Kraftspeicher (6) ein Fe­derelement vorgesehen ist, das auf einen Hebel (24) einwirkt, der um die Achse (26) der Antriebsrolle (4) drehbar gelagert ist und der über eine Schaltwelle (28) auf den beweglichen Kontakt (8) einwirkt (Figur 3).11. Quick switch according to claim 8, characterized in that a spring element is provided as the energy store (6), which acts on a lever (24) which is rotatably mounted about the axis (26) of the drive roller (4) and which has a control shaft (28) acts on the movable contact (8) (Figure 3). 12. Schnellschalter nach Anspruch 8, dadurch ge­kennzeichnet, daß als Kraftspeicher (6) ein Fe­derelement vorgesehen ist, dessen Federkraft KF auf die An­triebsrolle (4) einwirkt, die durch einen Hebel (24) kraft- und formschlüssig mit dem beweglichen Kontakt (8) verbunden ist (Figur 4).12. Quick switch according to claim 8, characterized in that a spring element is provided as the energy store (6), the spring force K F acts on the drive roller (4), which is non-positively and positively by a lever (24) with the movable contact (8 ) is connected (Figure 4).
EP19900114614 1989-08-10 1990-07-30 High-speed circuit breaker Withdrawn EP0412401A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3926476 1989-08-10
DE3926476 1989-08-10

Publications (2)

Publication Number Publication Date
EP0412401A2 true EP0412401A2 (en) 1991-02-13
EP0412401A3 EP0412401A3 (en) 1992-01-22

Family

ID=6386891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900114614 Withdrawn EP0412401A3 (en) 1989-08-10 1990-07-30 High-speed circuit breaker

Country Status (1)

Country Link
EP (1) EP0412401A3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517049A1 (en) * 1991-06-03 1992-12-09 ABBPATENT GmbH Leakage current release with permanent magnet
EP0548732A2 (en) * 1991-12-24 1993-06-30 ABBPATENT GmbH Earth leakage circuit breaker
EP0548731A2 (en) * 1991-12-24 1993-06-30 ABBPATENT GmbH Earth leakage and/or differential current circuit breaker
DE4443520A1 (en) * 1994-12-07 1996-06-13 Abb Patent Gmbh Fault-current circuit breaker
WO2001050490A1 (en) * 1999-12-31 2001-07-12 Abb Service S.R.L. Power switch
DE102016218242A1 (en) 2016-09-22 2018-03-22 Siemens Aktiengesellschaft DC overvoltage protection for an energy system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264733A (en) * 1948-06-17 1949-10-31 Lindner Karl Installation auto switch.
US2820118A (en) * 1953-10-02 1958-01-14 Bbc Brown Boveri & Cie Circuit closer
DE1119982B (en) * 1957-06-08 1961-12-21 Calor Emag Elektrizitaets Ag Trip device for electrical quick switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264733A (en) * 1948-06-17 1949-10-31 Lindner Karl Installation auto switch.
US2820118A (en) * 1953-10-02 1958-01-14 Bbc Brown Boveri & Cie Circuit closer
DE1119982B (en) * 1957-06-08 1961-12-21 Calor Emag Elektrizitaets Ag Trip device for electrical quick switch

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
N.E.C. Research and Development no. 70, Juli 1983, Tokyo, Japan Seite 125 "Tiny Piezo Ceramic Actuators" *
Research Disclosure, RD29156, no. 291, Juli 1988, New York, NY, USA Seite 512 "Operating device for circuit breakers" *
Richter - v. Voss: "Bauelemente der Feinmechanik" 1949, Verlag Technik Gmbh, Berlin, Deutschland *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517049A1 (en) * 1991-06-03 1992-12-09 ABBPATENT GmbH Leakage current release with permanent magnet
EP0548732A2 (en) * 1991-12-24 1993-06-30 ABBPATENT GmbH Earth leakage circuit breaker
EP0548731A2 (en) * 1991-12-24 1993-06-30 ABBPATENT GmbH Earth leakage and/or differential current circuit breaker
EP0548731A3 (en) * 1991-12-24 1994-01-26 Abb Patent Gmbh
EP0548732A3 (en) * 1991-12-24 1994-01-26 Abb Patent Gmbh
DE4443520A1 (en) * 1994-12-07 1996-06-13 Abb Patent Gmbh Fault-current circuit breaker
WO2001050490A1 (en) * 1999-12-31 2001-07-12 Abb Service S.R.L. Power switch
DE102016218242A1 (en) 2016-09-22 2018-03-22 Siemens Aktiengesellschaft DC overvoltage protection for an energy system

Also Published As

Publication number Publication date
EP0412401A3 (en) 1992-01-22

Similar Documents

Publication Publication Date Title
EP0657326A1 (en) Roll bars for motor cars
EP2864995B1 (en) Switching device with electromagnetic latching mechanism
DE2728485A1 (en) ELECTROMAGNETIC POWERED IMPACT DEVICE
EP3224851B1 (en) Fast triggering arrangement for cutting a current path in a switching device
EP3284097B1 (en) Quickly closing switch element
DE2717958A1 (en) DRIVE DEVICE FOR ELECTRIC SWITCHGEAR WITH PRESSURE CONTACTS
EP2394286A1 (en) Tripping apparatus, particularly for circuit breakers
EP0412401A2 (en) High-speed circuit breaker
DE1301181B (en) Magnetic actuation device
EP0070248B1 (en) Isolating switch
WO2001084579A1 (en) Magnetic release for opening a contact system
DE1120929B (en) Electric door lock for motor vehicle doors, especially mortise lock
DE2914743A1 (en) Sensitive small switching mechanism - has single lever performing two increases in force so that mechanism can be operated by few grams
DE1613974A1 (en) Circuit breaker
EP3282464B1 (en) Jump drive and switching device with jump drive
EP0148112A1 (en) Switch with a selective tripping device
DE569637C (en) Energy storage device, especially for operating electrical switches
EP1473753A1 (en) Electromagnetic switch device
DE2648468A1 (en) SWITCHING DEVICE
EP0628977B1 (en) Multipolar circuit-breaker
DE2655359C2 (en) Undervoltage release for an electrical circuit breaker
DE1906369A1 (en) Current-limiting switch with impact armature
DE954715C (en) Electromagnetically actuated release device for switches, especially installation switches
DE2557223C3 (en) Electromagnetic release device for interrupting an electrical circuit
DE3000681A1 (en) Contact actuating device for relays - has actuating stops for sprung contacts in actuating plane and on either side of sprung contact terminal

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901205

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE GB SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE GB SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920723