EP0155373A2 - High-voltage high-power fuse - Google Patents

High-voltage high-power fuse Download PDF

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Publication number
EP0155373A2
EP0155373A2 EP84114942A EP84114942A EP0155373A2 EP 0155373 A2 EP0155373 A2 EP 0155373A2 EP 84114942 A EP84114942 A EP 84114942A EP 84114942 A EP84114942 A EP 84114942A EP 0155373 A2 EP0155373 A2 EP 0155373A2
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EP
European Patent Office
Prior art keywords
pin
fuse
release
cap
pawl
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Application number
EP84114942A
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German (de)
French (fr)
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EP0155373B1 (en
EP0155373A3 (en
Inventor
Dietrich Dipl.-Ing. Mooz
Rolf Dirks
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Felten and Guilleaume Energietechnik AG
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Felten and Guilleaume Energietechnik AG
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Priority to AT84114942T priority Critical patent/ATE47250T1/en
Publication of EP0155373A2 publication Critical patent/EP0155373A2/en
Publication of EP0155373A3 publication Critical patent/EP0155373A3/en
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Publication of EP0155373B1 publication Critical patent/EP0155373B1/en
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    • 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
    • H01H71/14—Electrothermal mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H01H85/303—Movable indicating elements
    • H01H85/306—Movable indicating elements acting on an auxiliary switch or contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0258—Structural association of a fuse or a fuse holder with a bimetallic element

Definitions

  • the invention relates to a high-voltage high-performance (HH) fuse according to the preamble of claim 1.
  • HV fuses are devices for the one-time interruption of short-circuit currents in indoor and outdoor switchgear. These fuses are therefore suitable as short-circuit protection against voltage transformers, capacitors, cable branches, transformers and similar devices. They protect downstream devices and lines from the thermal and dynamic effects of large short-circuit currents, which they interrupt as current-limiting fuses when the current rises.
  • the HV fuses are only used for short-circuit protection, the overload protection is taken over by overcurrent devices on the secondary side (low voltage).
  • overcurrent devices on the secondary side (low voltage).
  • the HV fuses cannot switch off currents below their triple nominal current.
  • full-range fuses are now being offered, which represent a combination of a HV fuse and an overload fuse.
  • this combination is very complex.
  • switch-disconnectors are combined with HV HRC fuses. Since the load-break switch safely masters the currents below three times the nominal fuse current, the object of the invention is to equip a HV fuse in addition to the short-circuit device with an overload device which is capable of overcurrent occurring through the load-break switch connected upstream of the HV fuse switch off.
  • this object is achieved by the measures specified in the main claim and a secondary claim.
  • the trigger pin is triggered by a simple bimetal release when an overcurrent occurs and the upstream switch disconnector is released.
  • overcurrents are switched off by the switch disconnector and the HV HRC fuse did not need to be equipped with its own switching capacity.
  • the device can be used several times by resetting the release pin after the bimetal release has cooled down.
  • the unlatching of Lasttr B nnschalters takes place at an overcurrent by the release pin and at short-circuit by the striker of the fuse.
  • the second solution provides a common trigger pin which responds in the event of an overcurrent by the bimetal trigger and in the event of a short circuit by the striker.
  • the overload device is integrated in a cap of the fuse, so that the fuse fits into the fuse holder without additional measures.
  • a special embodiment of the fuse is that the cap with the overload device is designed so that it can be plugged onto a standard fuse (claim 5). It is advantageous here that the overload device after Blowing the fuse for an intact fuse is reusable.
  • a HV fuse 1 the most important components of a HV fuse 1 are a main fuse element 2 and a secondary fuse element 4 connected in parallel therewith.
  • the main fuse element consists of two parallel conductors which are wound helically on a ceramic carrier 3 to achieve the conductor length required for the mains voltage.
  • the secondary fuse element is usually a resistance wire connected in parallel to the main fuse element, which is inserted in the interior of the ceramic carrier. This resistance wire triggers an interruption detector during melting, which is designed as a striking pin 5.
  • the entire arrangement of the fuse is located in an insulating body 6, which is sealed airtight on both sides by caps 7, which are designed as connecting contacts for the fuse holder.
  • a bimetallic release 8 is used, which consists of a metal strip. This metal strip is bent at an angle at its ends, one part of the fastening on the inside of the cap top surface and the other part bent at an angle serving to receive a pawl 9.
  • the firing pin has the task of opening the switch disconnector after a short circuit. For this purpose, he passes through an outlet opening 10 on the cap, actuates a lever and hereby opens the upstream switch disconnector. In the event of a short circuit, the fuse must then be replaced.
  • the striking pin is surrounded in the cap area by a tubular release pin 11 1. It has the task of tripping in the event of an overcurrent (overload), covering the same path as the striker and fulfilling the same function when opening the upstream switch disconnector as the striker. Both pins work completely independently of each other, but with the aim of switching off the switch disconnector.
  • the trigger pin has on its outer periphery a locking device 12, which serves as a locking point of the pawl 9. The release pin is locked against the pressure of a spring 13 tensioned on the block.
  • the bimetallic release is connected to the fusible conductors via a flexible line 14.
  • a trigger pin 110 is provided, which surrounds a striker pin 50, which is shorter than the length of the trigger pin, as a hollow body.
  • Another pawl 16 is arranged on the bimetallic release 8 above the pawl 9. The pawl 16 is chamfered to secure and engages in a recess of the trigger pin. In the event of a short circuit, the striker pin rests against the pawl and presses the bimetal trigger outwards, causing the trigger pin to snap outwards. When returning len can be determined whether the Sahlagstatt triggered nat or not.
  • the bimetallic release can also be accommodated in a cap 70 which is designed as a plug-in part for a standard fuse.
  • the plug-in part with an insulating tube 17, which has the length of the cap and the securing attachment 18, is plugged or screwed onto the securing attachment.
  • the cap contains, in addition to the release pin 1 1 nor a solid extension pin 111. This is pressed out in the event of short circuiting the striker pin 5, Waehrens in the case of excess current tripping pin through the tubular Auslose- occurs. 11

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  • Fuses (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

An HRC-fuse as an insulating body surrounding a main fusible conductor and an auxiliary fusible conductor connected to a spring biased impact pin. A conductive cap serving as a terminal for the fusible conductors is arranged on the insulating body and is provided with an outlet opening opposite the impact pin. A tripping hollow pin or sleeve coaxially surrounds at least a part of the impact pin and passes through the outlet opening. A bimetal release pawl is arranged in the one cap parallel to the pin and being electrically connected to the fusible conductors. The pawl engages a rest on the tripping sleeve to counteract a biasing spring. The impact pin and the tripping sleeve are triggered independently one from the other either by a short-circuit current melting the auxiliary conductor, or by an overload which heats up the bimetal release and triggers the sleeve. Both the tripping sleeve and the impact pin act on a load interruptor arranged opposite the outlet opening.

Description

Die Erfindung betrifft eine Hochspannungs-Hochleistungs (HH)-Sicherung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a high-voltage high-performance (HH) fuse according to the preamble of claim 1.

HH-Sicherungen sind Einrichtungen zum einmaligen Unterbrechen von Kurzschlußströmen in Innenraum- und Freiluft-Schaltanlagen. Diese Sicherungen eignen sich daher als Kurzschlußschutz vor Spannungswandlern, Kondensatoren, Kabelabzweigen, Transformatoren und ähnlichen Einrichtungen. Sie schützen nachgeschaltete Geräte und Leitungen vor den thermischen und dynamischen Auswirkungen großer Kurzschlußströme, die sie als strombegrenzende Sicherungen schon im Stromanstieg unterbrechen.HV fuses are devices for the one-time interruption of short-circuit currents in indoor and outdoor switchgear. These fuses are therefore suitable as short-circuit protection against voltage transformers, capacitors, cable branches, transformers and similar devices. They protect downstream devices and lines from the thermal and dynamic effects of large short-circuit currents, which they interrupt as current-limiting fuses when the current rises.

Die HH-Sicherungen dienen nur dem Kurzschlußschutz, der uberlastschutz wird von Überstromorganen auf der Sekundärseite (Niederspannung) übernommen. Beim Versagen dieser Sekundärorgane oder bei Fehlern vorgeschalteter Einrichtungen, wie z. B. im Verteiler-Transformator besteht eine gefährliche Lücke in einem allumfassenden Schutzbereich, da die HH-Sicherungen Ströme unter ihrem dreifachen Nennstrom nicht abschalten können. Um diese Lücke zu schließen, werden neuerdings sogenannte Vollbereichssicherungen angeboten, die eine Kombination einer HH-Sicherung mit einer Überlastsicherung darstellen. Diese Kombination ist jedoch sehr aufwendig.The HV fuses are only used for short-circuit protection, the overload protection is taken over by overcurrent devices on the secondary side (low voltage). In the event of failure of these secondary organs or in the event of faults in upstream equipment, such as. B. in the distribution transformer there is a dangerous gap in an all-encompassing protection area, since the HV fuses cannot switch off currents below their triple nominal current. To close this gap, so-called full-range fuses are now being offered, which represent a combination of a HV fuse and an overload fuse. However, this combination is very complex.

Zum Anschluß von Verteiler-Transformatoren an das Mittelspannungsnetz werden im allgemeinen Lasttrennschalter mit HH-Sicherungen kombiniert. Da der Lasttrennschalter die Ströme unter dem dreifachen Sicherungs-Nennstrom sicher beherrscht, liegt der Erfindung die Aufgabe zugrunde, eine HH-Sicherung neben der Kurzschlußeinrichtung mit einer Überlasteinrichtung auszustatten, die in der Lage ist, einen auftretenden Überstrom durch den der HH-Sicherung vorgeschalteten Lasttrennschalter abzuschalten.For connecting distribution transformers to the medium In general, switch-disconnectors are combined with HV HRC fuses. Since the load-break switch safely masters the currents below three times the nominal fuse current, the object of the invention is to equip a HV fuse in addition to the short-circuit device with an overload device which is capable of overcurrent occurring through the load-break switch connected upstream of the HV fuse switch off.

Diese Aufgabe wird erfindungsgemäß durch die im Hauptanspruch und einem Nebenanspruch angegebenen Maßnahmen gelöst.According to the invention, this object is achieved by the measures specified in the main claim and a secondary claim.

Die mit der Erfindung erzielten Vorteile bestehen darin, daß der Auslösestift bei Auftreten eines Überstromes durch einen einfachen Bimetallauslöser ausgelöst wird und der vorgeschaltete Lasttrennschalter entklinkt wird. Dadurch werden Überströme vom Lasttrennschalter abgeschaltet und die HH-Sicherung brauchte hierfür nicht mit einem eigenen Schaltvermögen ausgerüstet zu werden. Außerdem ist die Einrichtung durch Rückstellen des Auslösestifts nach Abkühlung des Bimetallauslösers mehrfach verwendbar. Nach einer ersten Lösung erfolgt die Entklinkung des LasttrBnnschalters bei einem Überstrom durch den Auslösestift und bei Kurzschluß durch den Schlagstift der Sicherung. Die zweite Lösung sieht einen gemeinsamen Auslösestift vor, der bei Überstrom durch den Bimetallauslöser und bei Kurzschluß durch den Schlagstift anspricht. In beiden Fällen ist die Überlasteinrichtung in einer Kappe der Sicherung integriert, womit die Sicherung in den Sicherungshalter ohne zusätzliche Maßnahmen paßt.The advantages achieved by the invention are that the trigger pin is triggered by a simple bimetal release when an overcurrent occurs and the upstream switch disconnector is released. As a result, overcurrents are switched off by the switch disconnector and the HV HRC fuse did not need to be equipped with its own switching capacity. In addition, the device can be used several times by resetting the release pin after the bimetal release has cooled down. According to a first solution, the unlatching of Lasttr B nnschalters takes place at an overcurrent by the release pin and at short-circuit by the striker of the fuse. The second solution provides a common trigger pin which responds in the event of an overcurrent by the bimetal trigger and in the event of a short circuit by the striker. In both cases, the overload device is integrated in a cap of the fuse, so that the fuse fits into the fuse holder without additional measures.

Vorteilhafte und zweckmäßige Ausgestaltungen des Gegenstandes nach dem Haupt- und Nebenanspruch sind den Unteransprüchen zu entnehmen.Advantageous and expedient refinements of the subject according to the main and secondary claims can be found in the subclaims.

Eine tesondere Ausführungsform der Sicherung besteht darin, daß die Kappe mit der Überlasteinrichtung so ausgebildet ist, daß sie auf eine Normsicherung aufsteckbar ist (Anspruch 5). Hierbei ist vorteilhaft, daß die Überlasteinrichtung nach Durchbrennen der Sicherung für eine intakte Sicherung wieder verwendbar ist.A special embodiment of the fuse is that the cap with the overload device is designed so that it can be plugged onto a standard fuse (claim 5). It is advantageous here that the overload device after Blowing the fuse for an intact fuse is reusable.

Ausführungsbeispiele der Erfindung sind in Zeichnungen dargestellt und werden im folgenden näher erläutert. Es zeigen

  • Fig. 1 einen Bimetallauslöser in der Kappe einer Norm-HH-Sicherung, mit nach außen getrennt wirkenden Auslöse-und Schlagstiften, in Seitenansicht und im Schnitt
  • Fig. 2 einen Bimetallauslöser in der Kappe einer Norm-EH-Sicherung mit nach außen gemeinsam wirkendem Auslösestift für Überlast und Kurzschluß, in Seitenansicht und im Schnitt
  • Fig. 3 einen Bimetallauslöser in einer als Aufsteckteil füreine Norm-HH-Sicherung ausgebildeten Kappe, mit nach außen getrennt wirkenden Auslöse- und Schlagstiften in Seitenansicht und im Schnitt.
Embodiments of the invention are shown in drawings and are explained in more detail below. Show it
  • Fig. 1 shows a bimetallic release in the cap of a standard HV fuse, with release and striking pins acting separately on the outside, in side view and in section
  • Fig. 2 shows a bimetallic release in the cap of a standard EH fuse with an externally acting release pin for overload and short circuit, in side view and in section
  • Fig. 3 shows a bimetallic release in a cap designed as a plug-on part for a standard HH fuse, with release and impact pins acting separately on the outside in side view and in section.

Wie die Figurlzeigt, sind die wichtigsten Bestandteile einer HH-Sicherung 1 ein Hauptschmelzleiter 2 und ein hierzu parallel geschalteter Nebenschmelzleiter 4. Der Hauptschmelzleiter besteht aus zwei parallelen Leitern, die zur Erzielung der für die Netzspannung notwendigen Leiterlänge schraubenförmig auf einem Keramikträger 3 aufgewickelt sind. Der Nebenschmelzleiter ist in der Regel ein zum Hauptschmelzleiter parallel geschalteter Widerstandsdraht, der in dem Innern des Keramikträgers eingesetzt ist. Dieser Widerstandsdraht löst beim Schmelzen einen Unterbrechungsmelder aus, der als Schlagstift 5 ausgebildet ist. Die gesamte Anordnung der Sicherung befindet sich in einem Isolierkörper 6, der beidseitig luftdicht durch Kappen 7 verschlossen ist, die als Anschlußkontakte für den Sicherungshalter ausgebildet sind. In einer dieser Kappen ist ein Bimetallauslöser 8 eingesetzt, der aus einem Metallstreifen besteht. Dieser Metallstreifen ist an seinen Enden winklig abgebogen, wobei das eine Teil der Befestigung an der Innenseite der Kappendeckfläche und das andere winklig abgebogene Teil der Aufnahme einer Klinke 9 dient.As the figure shows, the most important components of a HV fuse 1 are a main fuse element 2 and a secondary fuse element 4 connected in parallel therewith. The main fuse element consists of two parallel conductors which are wound helically on a ceramic carrier 3 to achieve the conductor length required for the mains voltage. The secondary fuse element is usually a resistance wire connected in parallel to the main fuse element, which is inserted in the interior of the ceramic carrier. This resistance wire triggers an interruption detector during melting, which is designed as a striking pin 5. The entire arrangement of the fuse is located in an insulating body 6, which is sealed airtight on both sides by caps 7, which are designed as connecting contacts for the fuse holder. In one of these caps, a bimetallic release 8 is used, which consists of a metal strip. This metal strip is bent at an angle at its ends, one part of the fastening on the inside of the cap top surface and the other part bent at an angle serving to receive a pawl 9.

Der Schlagstift hat die Aufgabe, nach einem Kurzschluß den Lasttrennschalter zu öffnen. Hierzu tritt er durch eine Austrittsöffnung 10 an der Kappe, betätigt einen Hebel und öffnet hiermit den vorgeschalteten Lasttrennschalter. In einem Kurzschlußfall muß dann die Sicherung erneuert werden.The firing pin has the task of opening the switch disconnector after a short circuit. For this purpose, he passes through an outlet opening 10 on the cap, actuates a lever and hereby opens the upstream switch disconnector. In the event of a short circuit, the fuse must then be replaced.

Der Schlagstift ist im Kappenbereich von einem rohrförmigen Auslösestift 11 1 umgeben. Er hat die Aufgabe, bei einem Überstrom (Überlast) auszulösen, wobei er den gleichen Weg wie der Schlagstift zurücklegt und die gleiche Funktion bei der Öffnung des vorgeschalteten Lasttrennschalters erfüllt wie der Schlagstift. Beide Stifte arbeiten völlig unabhängig voneinander, jedoch mit dem Ziel, den Lasttrennschalter auszuschalten. Der Auslösestift besitzt an seinem äußeren Umfang eine Rastvorrichtung 12, die der Klinke 9 als Einrastpunkt dient. Die Verrastung des Auslösestifts erfolgt gegen den Druck einer auf Block gespannten Feder 13. Der Bimetallauslöser ist über eine flexible Leitung 14 mit den Schmelzleitern verbunden.The striking pin is surrounded in the cap area by a tubular release pin 11 1. It has the task of tripping in the event of an overcurrent (overload), covering the same path as the striker and fulfilling the same function when opening the upstream switch disconnector as the striker. Both pins work completely independently of each other, but with the aim of switching off the switch disconnector. The trigger pin has on its outer periphery a locking device 12, which serves as a locking point of the pawl 9. The release pin is locked against the pressure of a spring 13 tensioned on the block. The bimetallic release is connected to the fusible conductors via a flexible line 14.

Im Überstrom erwärmt sich der Bimetallauslöser und verschwenkt dabei zum Kappenrand. Mit dieser Bewegung wird die Klinke 9 von der Rastvorrichtung abgezogen und der Auslösestift schnellt nach außen.In the overcurrent, the bimetal release heats up and pivots to the edge of the cap. With this movement, the pawl 9 is pulled off the locking device and the trigger pin swings outwards.

Die genaue Einstellung des Bimetallauslösers ist mittels einer Einstellschraube 15 in einem bestimmten Toleranzbereich möglich. Dadurch läßt sich die Zuordnung Bimetallstrom zu Sicherungsnennstrom variieren. Nach Figur 2 ist ein Auslösestift 110 vorgesehen, der als Hohlkörper einen gegenüber der Länge des Auslösestifts verkürzten Schlagstift 50 umgibt. Oberhalb der Klinke 9 ist eine weitere Klinke 16 am Bimetallauslöser 8 angeordnet. Die Klinke 16 ist zur Sicherung hin abgeschrägt und greift in eine Ausparung des Auslösestifts. Im Kurzschlußfall stöht der Schlag- stift gegen die Klinke und drückt den Bimetallauslöser nach auken, wodurch der Auslösestift nach außen schnellt. Beim Rück-

Figure imgb0001
len kann festgestellt werden, ob der Sahlagstift ausgelöst nat oder nicht.The exact setting of the bimetallic release is possible by means of an adjusting screw 15 within a certain tolerance range. This allows the assignment of the bimetal current to the nominal fuse current to be varied. According to FIG. 2, a trigger pin 110 is provided, which surrounds a striker pin 50, which is shorter than the length of the trigger pin, as a hollow body. Another pawl 16 is arranged on the bimetallic release 8 above the pawl 9. The pawl 16 is chamfered to secure and engages in a recess of the trigger pin. In the event of a short circuit, the striker pin rests against the pawl and presses the bimetal trigger outwards, causing the trigger pin to snap outwards. When returning
Figure imgb0001
len can be determined whether the Sahlagstift triggered nat or not.

Im Überstromfall erfolgt die Auslösung des Auslösestifts unter den gleichen Bedingungen wie nach Fig. 1.In the event of an overcurrent, the tripping pin is triggered under the same conditions as in FIG. 1.

Nach Fig. 3 kann der Bimetallauslöser auch in einer Kappe 70 untergebracht werden, die als Steckteil für eine Normsicherung ausgebildet ist. Hierbei wird das Steckteil mit einem Isolierrohr 17, das die Länge der Kappe und des Sicherungsansatzes 18 aufweist, auf den Sicherungsansatz aufgesteckt bzw. aufgeschraubt. Die Kappe enthält neben dem Auslösestift 11 noch einen massiven Verlängerungsstift 111. Dieser wird im Kurzschlußfall vom Schlagstift 5 herausgedrückt, währens im Überstromfall eine Auslösung durch den rohrförmigen Auslose- stift 11 erfolgt.3, the bimetallic release can also be accommodated in a cap 70 which is designed as a plug-in part for a standard fuse. Here, the plug-in part with an insulating tube 17, which has the length of the cap and the securing attachment 18, is plugged or screwed onto the securing attachment. The cap contains, in addition to the release pin 1 1 nor a solid extension pin 111. This is pressed out in the event of short circuiting the striker pin 5, Waehrens in the case of excess current tripping pin through the tubular Auslose- occurs. 11

Claims (6)

1. Hochspannungs-Hochleistungs(HH)-Sicherung mit einem Hauptschmelzleiter für die Unterbrechung des Kurzschlußstromes, mit einem Nebenschmelzleiter für die Auslösung eines unter Federkraft stehenden Schlagstifts, und mit einem beide Schmelzleiter umgebenden Isolierkörper, der beidseitig mit Kappen luftdicht verschlossen ist, die als Anschlußkontakte zwischen den Schmelzleitern und den Außenanschlüssen ausgebildet sind, dadurch gekennzeichnet , daß der Schlagstift (5) im Bereich einer Kappe (7) von einem rohrförmig ausgebildeten Auslösestift (11 ) umgeben ist, der wie der Schlagstift bis zur Austrittsöffnung (10) der Kappe geführt ist, und daß in dieser Kappe ein Bimetallauslöser (8) in den Stromkreis der HH-Sicherung (1) eingesetzt ist, der mit einer den Auslösestift verrastenden und unter Federspannung stehenden Klinke (9) versehen ist, und daß der Bimetallauslöser derart eingestellt ist, daß er bei Auftreten eines Überstromes den Auslösestift entklinkt, der seinerseits einen vorgeschalteten Lasttrennschalter öffnet.1.High-voltage high-performance (HH) fuse with a main fuse element for interrupting the short-circuit current, with a secondary fuse element for triggering a spring pin under spring force, and with an insulating body surrounding both fuse elements, which is sealed airtight on both sides with caps, which act as connection contacts are formed between the fusible conductors and the external connections, characterized in that the striking pin (5) is surrounded in the area of a cap (7) by a tubular trigger pin (11) which, like the striking pin, is guided to the outlet opening (10) of the cap , and that in this cap, a bimetallic release (8) is inserted into the circuit of the HV fuse (1), which is provided with a latch which locks the release pin and is under spring tension (9), and that the bimetallic release is set such that he releases the trigger pin when an overcurrent occurs, which in turn precedes one old switch disconnector opens. 2. Hochspannungs-Hochleistungs(HH)-Sicherung mit einem Hauptschmelzleiter für die Unterbrechung des Kurzschlußstromes, mit einem Nebenschmelzleiter für die Auslösung eines unter Federkraft stehenden Schlagstifts, und mit einem beide Schmelzleiter umgebenden Isolierkörper, der beidseitig mit Kappen luftdicht verschlossen ist, die als Anschlußkontakte zwischen den Schmelzleitern und den Außenanschlüssen ausgebildet sind, dadurch gekennzeichnet , daß der Schlagstift (50) im Bereich einer Kappe (7) von einem rohrförmig ausgebildeten Auslösestift (110) umgeben ist, und daß der Schlagstift gegenüber dem Auslösestift eine verkürzte Länge aufweist, und daß der Bimetallauslöser (8) neben der ersten Klinke (9) eine zweite KLinke (16) aufweist, die in eine Aussparung des rohrförmigen Auslösestifts eingreift, und daß bei einem Überstrom die erste Klinke (9) und bei einem Kurzschluß die zweite vom Schlagstift beauf-
Figure imgb0002
Klinke (16) den Auslösestift freigibt..2. High-voltage high-performance (HH) fuse with a main fuse for interrupting the short-circuit current, with a secondary fuse for triggering a spring-loaded impact pin, and with an insulating body surrounding both fuses, which is on both sides Caps are sealed airtight, which are designed as connecting contacts between the fusible conductors and the external connections, characterized in that the striking pin (50) in the area of a cap (7) is surrounded by a tubular trigger pin (110), and that the striking pin opposite the Tripping pin has a shortened length, and that the bimetallic release (8) next to the first pawl (9) has a second pawl (16) which engages in a recess in the tubular release pin, and that in the event of an overcurrent, the first pawl (9) and one short circuit the second one fired by the firing pin
Figure imgb0002
Pawl (16) releases the release pin. 3. Sicherung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet , daß der Bimetallauslöser (8) in Form eines zum Auslösestift (11 bzw. 110) parallel verlaufenden Streifens ausgebildet ist, dessen Länge derart bemessen ist, daß die am freien Ende des Streifens angebrachte Klinke (9) den Auslösestift gegen den Druck der auf Block gespannten Feder (13) festhält, wobei die Klinke an einer am Umfang im Bereich des offenen Endes angebrachten Rastvorrichtu-(12) des Auslösestifts eingreift.3. Fuse according to one of claims 1 to 2, characterized in that the bimetallic release (8) is designed in the form of a strip extending parallel to the release pin (11 or 110), the length of which is dimensioned such that the at the free end of the strip attached pawl (9) holds the release pin against the pressure of the spring (13) tensioned on the block, the pawl engaging on a detent device (12) of the release pin attached to the circumference in the region of the open end. 4. Sicherung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet , daß der Ansprechwert der Klinke (9) mittels einer von außerhalb der Kappe (7) zu betätigender Schraube (15) einstellbar ist.4. Fuse according to one of claims 1 to 3, characterized in that the response value of the pawl (9) is adjustable by means of a screw (15) to be actuated from outside the cap (7). 5. Sicherung nach einem der Ansprüche 1,3 und 4, dadurch gekennzeichnet, daß der Schlagstift (5) um einen massiven Auslösestift (111) in Kappengröße verlängert ist, und daß die Kappe (70) mit dem Bimetallauslöser (8) mittels eines Isolierrohres (17) auf den Ansatz (18) der Sicherung aufgeschoben ist.5. Fuse according to one of claims 1, 3 and 4, characterized in that the striker pin (5) is extended by a massive release pin (111) in cap size, and in that the cap (70) with the bimetallic release (8) by means of an insulating tube (17) is pushed onto the attachment (18) of the fuse. 6. Sicherung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet , daß die Kappe (70) mit dem Bimetallauslöser (8) mit der Sicherung (1) verschraubbar und zwischen verschiedenen Sicherungen tauschbar ist.6. Fuse according to one of claims 1 to 5, characterized in that the cap (70) with the bimetallic release (8) with the fuse (1) can be screwed and exchanged between different fuses.
EP84114942A 1984-03-17 1984-12-07 High-voltage high-power fuse Expired EP0155373B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114942T ATE47250T1 (en) 1984-03-17 1984-12-07 HIGH VOLTAGE, HIGH POWER FUSE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843409957 DE3409957A1 (en) 1984-03-17 1984-03-17 HIGH VOLTAGE HIGH PERFORMANCE FUSE
DE3409957 1984-03-17

Publications (3)

Publication Number Publication Date
EP0155373A2 true EP0155373A2 (en) 1985-09-25
EP0155373A3 EP0155373A3 (en) 1987-04-22
EP0155373B1 EP0155373B1 (en) 1989-10-11

Family

ID=6230897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114942A Expired EP0155373B1 (en) 1984-03-17 1984-12-07 High-voltage high-power fuse

Country Status (5)

Country Link
US (1) US4617544A (en)
EP (1) EP0155373B1 (en)
JP (1) JPS60211735A (en)
AT (1) ATE47250T1 (en)
DE (2) DE3409957A1 (en)

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EP0881654A1 (en) * 1997-05-27 1998-12-02 Schneider Electric Sa Electric fuse
WO2010105648A1 (en) * 2009-03-16 2010-09-23 Siba Fuses Gmbh & Co. Kg Full-range fuse insert

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DE3607596A1 (en) * 1986-03-07 1987-09-10 Ritz Messwandler Kg High-voltage fuse
US4766408A (en) * 1987-09-03 1988-08-23 Westinghouse Electric Corp. Current limiting fuse with indicator
US6133818A (en) * 1999-08-11 2000-10-17 Space Systems/Loral, Inc. Redundant fuse wire release device
US7210383B2 (en) 2000-08-14 2007-05-01 Sd3, Llc Detection system for power equipment
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US7610836B2 (en) * 2000-08-14 2009-11-03 Sd3, Llc Replaceable brake mechanism for power equipment
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US7055417B1 (en) * 1999-10-01 2006-06-06 Sd3, Llc Safety system for power equipment
US7350445B2 (en) * 2003-08-20 2008-04-01 Sd3, Llc Brake cartridge for power equipment
US7399453B2 (en) * 2001-11-15 2008-07-15 Powerspan Corp. Discharge reactor fuse link
CA2380146C (en) * 2002-03-02 2011-01-04 S&C Electric Company High voltage fuse
EP1369890A1 (en) * 2002-06-07 2003-12-10 Abb Research Ltd. Indicator striker device for high voltage fuse
CN101138062B (en) 2004-09-15 2010-08-11 力特保险丝有限公司 High voltage/high current fuse
US9085377B2 (en) * 2011-05-17 2015-07-21 Space Systems/Loral, Llc Redundant fuse wire release device
US9490096B2 (en) 2013-03-14 2016-11-08 Mersen Usa Newburyport-Ma, Llc Medium voltage controllable fuse
US9324533B2 (en) 2013-03-14 2016-04-26 Mersen Usa Newburyport-Ma, Llc Medium voltage controllable fuse
DE102022002431A1 (en) 2022-07-05 2024-01-11 Siba Fuses Gmbh Using a HH fuse for a drop-out backup system

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US2982834A (en) * 1957-12-27 1961-05-02 Ite Circuit Breaker Ltd Dual element fuse device
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FR1461736A (en) * 1965-11-12 1966-02-25 Siemens Ag Fuse-type circuit breaker, in particular high-voltage current-limiting circuit breaker, comprising a percussion device for triggering a switch
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JPS5276509A (en) * 1975-12-23 1977-06-28 Toshiba Corp Fuse provided with overload detecting unit

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BE668548A (en) * 1964-08-21 1965-12-16
FR1461736A (en) * 1965-11-12 1966-02-25 Siemens Ag Fuse-type circuit breaker, in particular high-voltage current-limiting circuit breaker, comprising a percussion device for triggering a switch
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US3593249A (en) * 1969-05-22 1971-07-13 Bel Aire Sales Corp Circuit breaker with bimetallic element
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EP0881654A1 (en) * 1997-05-27 1998-12-02 Schneider Electric Sa Electric fuse
FR2764108A1 (en) * 1997-05-27 1998-12-04 Schneider Electric Sa ELECTRIC FUSE
WO2010105648A1 (en) * 2009-03-16 2010-09-23 Siba Fuses Gmbh & Co. Kg Full-range fuse insert

Also Published As

Publication number Publication date
US4617544A (en) 1986-10-14
JPS6153813B2 (en) 1986-11-19
DE3409957C2 (en) 1989-02-09
JPS60211735A (en) 1985-10-24
ATE47250T1 (en) 1989-10-15
DE3409957A1 (en) 1985-09-19
EP0155373B1 (en) 1989-10-11
EP0155373A3 (en) 1987-04-22
DE3480142D1 (en) 1989-11-16

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