EP1047091B1 - Fusible en particulier fusible à haute puissance - Google Patents

Fusible en particulier fusible à haute puissance Download PDF

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Publication number
EP1047091B1
EP1047091B1 EP00108424A EP00108424A EP1047091B1 EP 1047091 B1 EP1047091 B1 EP 1047091B1 EP 00108424 A EP00108424 A EP 00108424A EP 00108424 A EP00108424 A EP 00108424A EP 1047091 B1 EP1047091 B1 EP 1047091B1
Authority
EP
European Patent Office
Prior art keywords
fuse
actuation
fuse according
separation
locking
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 - Lifetime
Application number
EP00108424A
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German (de)
English (en)
Other versions
EP1047091A2 (fr
EP1047091A3 (fr
Inventor
Udo Nellen
Stefan Bünger
Martin Grote
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.)
Fritz Driescher Kg Spezialfabrik fur Elektrizitatswerksbedarf & Co GmbH
Original Assignee
Fritz Driescher Kg Spezialfabrik fur Elektrizitatswerksbedarf & Co GmbH
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 Fritz Driescher Kg Spezialfabrik fur Elektrizitatswerksbedarf & Co GmbH filed Critical Fritz Driescher Kg Spezialfabrik fur Elektrizitatswerksbedarf & Co GmbH
Publication of EP1047091A2 publication Critical patent/EP1047091A2/fr
Publication of EP1047091A3 publication Critical patent/EP1047091A3/fr
Application granted granted Critical
Publication of EP1047091B1 publication Critical patent/EP1047091B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H85/36—Means for applying mechanical tension to fusible member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/006—Opening by severing a conductor
    • 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
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V

Definitions

  • the invention relates to a fuse, in particular a high-performance fuse, with at least one fusible conductor, mechanical means Cutting the fusible conductor and mechanical means for triggering the mechanical severing.
  • a fuse in particular a high-performance fuse, with at least one fusible conductor, mechanical means Cutting the fusible conductor and mechanical means for triggering the mechanical severing.
  • Such fuses are preferred used in the medium voltage range, although they are in professional circles High-voltage fuses or high-voltage high-performance fuses to be named.
  • a fuse is used to connect a circuit to one or more their parts designed for this purpose, the circuit in which it is inserted, to interrupt.
  • the circuit parts separating fused conductors be provided or melt inserts are used, which interrupt the circuit by melting when a current exceeds a given value for a sufficiently long period of time.
  • High-voltage high-performance fuses usually made of a ceramic tube body, at its ends provided with conductive contact caps. Inside the tube body are mounted on a ceramic insulator fusible link which electrically connected to the contact caps. The whole The fusible link structure is embedded in a quartz sand pad, which is the Cooling or clearing a fuse when the fuse is activated Arc serves. Et al this is the high performance behavior reached the fuses.
  • HH fuses have a current-limiting and selective effect and dissolve Melting of the fusible conductor automatically. They will in particular for the protection of equipment, preferably in medium voltage networks energy supply companies and industry.
  • a fuse of the type mentioned is known from US 4,369,420 or DE 196 07 756 C1 known, with a current safely and detectably interrupted can be provided by means according to the preamble of claim 1 for mechanically separating the Schmelzeiters are.
  • the locking device is to release the energy storage either by a thermal or an electrical guard, in parallel are connected to the fuse element and interact with it, triggered.
  • the electrical monitor reacts to short-circuit currents, while the thermal guard against one over a certain Period of continuous overload secures.
  • the separating rod is a shear rod educated.
  • the shear rod is pivotable over one at one end mounted lever arm, which acts on a compression spring, in the direction of his Longitudinal axis drivable.
  • the lever arm is counter to the force of the compression spring by a retaining wire held around the lever arm.
  • the one end of the retaining wire is held by a selective solder joint, which is the Function of the thermal guard has.
  • the other end of the retaining wire is connected to a resistance wire.
  • the retaining wire gives the lever arm either in the case of a thermal Release free when the solder joint under the influence of small Overflowing resulting heat melts, or in the case of an electrical Tripping when due to the voltage drop at the first occurring Melting arcs within the fusible conductor a current shift takes place on the resistance wire, the latter to melt through brings.
  • This version may be in one of the contact caps be housed in the tubular body of the fuse.
  • the present invention is based on the object, the aforementioned Fuse, in particular those known from US 4,369,420 High-voltage high-performance fuse, so to further develop that the functional effectiveness and the spatial allocation of the components is optimized, without requiring additional space results.
  • the means for triggering the mechanical Cutting through a pressure capsule include.
  • the pressure capsule acts in such a way that when released triggers gas under pressure releases. This pressure acts on the means for mechanical severing of the fusible conductor so that the latter are also moved abruptly with the consequence that the fusible conductor ruptured and the circuit thus safely interrupted.
  • the pressure capsule can be designed in particular as a gas generator and, for example, a propellant charge or a pyrotechnic charge exhibit. But it is also a gas cartridge conceivable, the gas under contains very high pressure, which releases with release of the pressure capsule and then act on the means for mechanical severing can.
  • a pressure capsule By using a pressure capsule can in particular to the use of comparatively strong springs, previously used to apply the necessary Forces used for mechanical cutting of the fusible link were waived. Also can about a pressure capsule a much greater force than generated by the springs. From this results in the possibility of the means of triggering the mechanical Separating and the means for mechanical cutting more compact perform as it was previously possible. So can easily a Full-range backup for all HH fuses, their design types and Dimensions are standardized in DIN 43 625, realized.
  • the pressure capsule is triggered mechanically.
  • the mechanical release has means to trigger the mechanical severing pure locking mechanism on, which ensures that the triggering of the pressure capsule in the normal Operating state does not occur, but only when a condition to trigger the fuse is given.
  • such a lever is in his pivotally mounted middle portion, with a free arm in the operating state against a spring force of a retaining wire in blocking position is held and the other free end of the lever to trigger the mechanical severing acts on the pressure capsule.
  • the release means one in the direction of the pressure capsule movably mounted stamp on.
  • the stamp is in the operating state by at least one blocking element held against a spring force and of this when triggered Approved.
  • the stamp In contrast to the previously described lever mechanism Here is the stamp as the pressure capsule triggering element moved in a straight line instead of swinging.
  • Locking element necessary to hold the punch can be a simple one Be a bolt.
  • This embodiment can be carried out particularly space-saving be that the blocking element cooperates with a locking bush, which surrounds the stamp, with the locking bush on its inner wall Has at least one recess which releases when triggered is, whereby the blocking element releases the punch. in this connection it is important that the blocking element is mounted so that it in the escape to release the pressure capsule released recess can.
  • the blocking element may preferably be formed as a detent ball which in one substantially perpendicular to the direction of movement of the punch Level is movably mounted.
  • the locking bushing is in the operating state held by a retaining wire against a spring force, so that the Detent ball from the inner wall of the locking bush in a groove of the punch is held, and wherein the recess of the locking sleeve when triggered is displaced in the plane of movement of the detent ball.
  • To trigger is the detent ball by the voltage applied to the punch spring force in pressed the recess so that it no longer blocks the stamp.
  • the means for triggering the mechanical severing include
  • an electrical release, in particular from a Trigger wire exists.
  • the trigger wire as Holding wire formed or connected to the retaining wire is thereby the held element free, so that the mechanical cutting of the fusible conductor is triggered.
  • the release means of a thermal release in particular consist of a selective solder joint.
  • the selective solder joint melts due to continuous overload and not dissipated heat, so that this gives an effective overload protection is.
  • the retaining wire both held in an overload as well as a short circuit Element free. In this way, the backup acts as a full-range backup.
  • the means for mechanical cutting of the melt insert have prefers a shear bar with at least one groove into which or engage the fusible link, the shear rod in the direction of his Longitudinal axis is movably mounted and with one or the fusible link holding fusible conductor carrier cooperates.
  • the shear rod namely abruptly relative to Fusible conductor carrier moves, so that in the fuse carrier and the shearing rod engaging fusible link is torn. This will the fusible conductor destroyed so that another by a Electricity generated arc is safe to exclude.
  • the pressure capsule facing the end of the shear rod in be led by a recording and an expansion chamber with the Pressure capsule communicate.
  • the ignition mechanism for the pressure capsule, the pressure capsule itself, the expansion space and the shear bar along an axis, in particular be arranged along the longitudinal axis of the fuse can.
  • the separation effect can be especially for small size fuses be improved by the fact that the fuse carrier in Direction of its longitudinal axis is movably mounted and when triggered the means for mechanical severing in the direction of movement the shear rod opposite direction is moved. For this can the fuse carrier against a spring force from a locking device be held at the time of release of the pressure capsule releases the fuse carrier.
  • the fuse may preferably be a display element for displaying the triggered condition of the fuse, so that the respective state the fuse is visible.
  • the display element can also at corresponding embodiment an outside of the fuse befindaji Switch-disconnector can be actuated.
  • the display element can in particular be connected to the blocking bushing be.
  • a hook for the engagement of the Retaining wire be provided so that the locking bush through the display element is held in its blocking position in the operating state.
  • the display element can be moved arranged Schmelzleiterthere connected to the fuse carrier be, optionally also a part of the fuse carrier be.
  • the interrupted in the middle area illustrated fuse 101 has a standard design on and consists of a cylindrical, with quartz sand filled safety body 102, the front side, each with a contact cap 103, 104 is provided. At each end face of the safety body 102 is in the respective contact cap 103, 104 a sheet metal cover 105, 106th provided, which prevents leakage of quartz sand.
  • the aforementioned means for mechanical severing have a Shear rod 107, which in the event of triggering in the direction of its longitudinal axis moved abruptly, while the guided through its slots Melting conductor severed.
  • the rod is mechanically biased to pressure, wherein the energy accumulator consists of a spring 108, the over a pivotally mounted receiving plate 109 at the lower end of the Shear Staff 107 attacks.
  • the energy storage is within the lower one Contact cap 104 of the fuse arranged.
  • the shear bar 107 via a locking lock 110 in an operating position against the spring force held on a first pivotally mounted Lever 111 is hinged, the free end of the free end of a second pivotable lever 112 secured against pivoting can be.
  • the second lever 112 can both via a thermal Watchdog 113 as well as an electrical guard 114 in its operating position being held.
  • the thermal guard 113 can do this be formed by a selective solder joint, while the electric Guardian 114 receives its function through a resistance wire 115, wherein the resistance wire 115 is connected via a node 116 to one end a holding wire 117 holding the lock in operating position holding connected is and the other end of the retaining wire 117 in the selective solder joint 113 is inserted.
  • the illustrated in Figure 2 embodiment of an inventive Backup for the sake of clarity only the means shown to trigger the mechanical severing end is has a tubular body 1 made of a ceramic material on.
  • a tubular body 1 made of a ceramic material on.
  • the fuse holder is an elongated body a ceramic material with a star-shaped cross-section. Of the Melt conductor is electrically connected to the contact caps.
  • each contact cap 2 The ends of the tubular body 1 are closed, each with a contact cap 2.
  • the interior of each contact cap 2 is provided with a metal cover 3 opposite the pipe body completed to a discharge to prevent the quartz sand located in the tubular body.
  • the the fuse final outside of the contact cap 2 is with a ⁇ ff 4 for a display or release pin 5 provided.
  • a rocker 6 as a lever mechanism, which is mounted pivotably about a pivot point 7.
  • the display and Release pin 5 is by means of a compression spring 8 in the longitudinal direction of the Tubular body 1 applied to the end of the fuse directed towards spring force and engages one of the two lever arms 9, 10 of the rocker 6.
  • This lever arm 9 is against the spring force of a retaining wire 11 held in a locked position, in a loop around the lever arm 9 is guided.
  • a bore 12 for a Mounting fuse provided to the lever arm 9 during assembly of the To hold fuse in this blocking position.
  • the retaining wire 11 is on the one side at a junction 13th held by a knot.
  • the Holding wire 11 formed as a resistance wire.
  • the other end is in Area of the joint 13 soldered to a selective solder.
  • Of the Holding wire 11 is electrically connected in parallel to the fuse element.
  • the Junction 13 is connected to the sheet metal cover 3, wherein about seals 14, 15 made of plastic both a spatial seal towards the interior of the contact cap 2 as well as an electrical Insulation against the sheet metal cover 3 is guaranteed.
  • FIG. 3 shows in particular, the other lever arm 10 of the rocker 6 aligned so that it can trigger a pressure capsule 16 by opening a firing pin 17 strikes, as soon as the lever arm 9 from the retaining wire 11th is released.
  • the rocker 6 is in this case of the prestressed display and release pin 5 pivoted, with part of the display and Release pin 5 exits through the opening 4 in the contact cap 2.
  • the triggering of the backup is indicated, on the other hand can by the display and release pin 5, a switch for switching off actuated further phases or downstream operating devices become.
  • the pressure capsule 16 has a receptacle for a shear bar 18, the in the figures 2 and 3 for reasons of clarity not accurate is shown.
  • the shear rod 18 is replaced by that of the pressure capsule 16th generated gas pressure abruptly parallel to the longitudinal axis of the fuse moved away from the pressure capsule 16, so that in the shear rod 18th and the fusible link carrier engaging fusible link breaks.
  • the pressure capsule 16, the display and release pin 5 together with the compression spring 8, the rocker 6 and the junction 13 are shared by the Sheet metal cover 3 and a cup-shaped bushing 19 held so that they already pre-assembled in the contact cap 2 are fitted can.
  • the embodiment of the invention shown in FIG comes without a lever mechanism.
  • a pressure capsule 20 triggered via a plunger 21, which for this purpose a Zündstöpsel 22 depresses.
  • the punch 21 is formed as a cylindrical body and in a hollow cylinder 23 in the direction of the ignition plug 22nd movably mounted.
  • a first compression spring 24 At the side facing away from the pressure capsule 20 of the Stamp 21 engages a first compression spring 24.
  • the punch 21 is in the operating position of detent balls 25 in the blocking position held, which engage in a circumferential groove 21 on the punch 42.
  • the locking balls 25 in openings provided for this purpose 26 held in the wall of the hollow cylinder 23. So that the locking balls 25 secured against falling out of the wall of the hollow cylinder 23 are, a locking bush 27 is provided, which the hollow cylinder 23 in Area of openings 26 completely surrounds. The locking balls 25 are thus secured in position by the inner wall of the locking bushing 27.
  • the locking bush 27 is in the direction of the longitudinal axis of the hollow cylinder 23rd movably mounted, wherein a spring 28, the locking sleeve 27 of the Pushes off pressure capsule 20. Against this spring force is the locking bush 27 held by a retaining wire 29, which at one with the locking bush 27 firmly connected indicator pin 30 attacks.
  • the retaining wire 29th facing the end of the indicator pin is designed as a hook to the around the retaining wire 29 is guided.
  • the retaining wire 29 is the same as in the previously described embodiment with its one end in the form of a selective solder joint 33 in one for it provided solder socket 34 and with its other end by a Knotting 35 attached to a junction 36, the mode of action of the retaining wire 29 identical to the previously described is.
  • All of the aforementioned components of this embodiment are of a cup-shaped bushing 37, with its open side in the Contact cap 43 is pressed.
  • the shear bar 38 does not have on its outside for engagement from here shown fusible links 41 slots.

Landscapes

  • Fuses (AREA)
  • Organic Insulating Materials (AREA)
  • Shovels (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (21)

  1. Coupe-circuit, notamment coupe-circuit à fort pouvoir de coupure, comprenant au moins un conducteur fusible, des moyens pour couper mécaniquement le conducteur fusible ainsi que des moyens pour déclencher la coupure mécanique qui comprennent une capsule de pression (16, 20), caractérisé par un déclenchement mécanique de la capsule de pression (16, 20) et par un mécanisme de blocage pour les moyens de déclenchement.
  2. Coupe-circuit selon la revendication 1, caractérisé par le fait que la capsule de pression (16, 20) est un générateur de gaz.
  3. Coupe-circuit selon la revendication 1 ou 2, caractérisé par le fait que la capsule de pression (16, 20) présente une cartouche avec une charge propulsive et une charge pyrotechnique.
  4. Coupe-circuit selon la revendication 3, caractérisé par le fait que le mécanisme de blocage présente un levier (9, 10) monté de façon pivotante dans une zone centrale, qui, en état de fonctionnement, est maintenu dans une position de blocage contre la force d'un ressort par un fil de retenue (11), le fil de retenue (11) agissant sur une extrémité libre du levier (9, 10) et l'autre extrémité agissant sur la capsule de pression (16) pour le déclenchement de la coupure.
  5. Coupe-circuit selon la revendication 3 ou 4, caractérisé par le fait que les moyens pour déclencher la coupure présentent un poinçon (21) mobile en direction de la capsule de pression (20) qui, en état de fonctionnement, est maintenu contre la force d'un ressort par au moins un élément de blocage et est libéré par celui-ci pour déclencher la coupure.
  6. Coupe-circuit selon la revendication 5, caractérisé par le fait que l'élément de blocage coopère avec une douille de blocage (27) qui est disposée autour du poinçon (21), la douille de blocage (27) présentant sur sa paroi intérieure au moins une encoche (31) qui est libérée pour déclencher la coupure, moyennant quoi l'élément de blocage déverrouille le poinçon (21).
  7. Coupe-circuit selon la revendication 6, caractérisé par au moins une bille d'arrêt (25) en guise d'élément de blocage, qui est mobile dans un plan essentiellement perpendiculaire à la direction de déplacement du poinçon (21), la douille de blocage (27) étant, en état de fonctionnement, maintenue contre la force d'un ressort par un fil de retenue (29) de telle sorte que la bille d'arrêt (25) est maintenue par la paroi intérieure de la douille de blocage (27) dans une rainure (42) du poinçon (21) et que l'encoche (31) de la douille de blocage (27) est déplacée dans le plan de déplacement de la bille d'arrêt (25) lors du déclenchement de la coupure.
  8. Coupe-circuit selon l'une des revendications 1 à 7, caractérisé par le fait que les moyens pour déclencher la coupure comprennent un déclencheur électrique formé notamment par un fil.
  9. Coupe-circuit selon la revendication 8, caractérisé par le fait que le fil de déclenchement forme le fil de retenue ou est relié au fil de retenue (11, 29).
  10. Coupe-circuit selon l'une des revendications 1 à 9, caractérisé par le fait que les moyens pour déclencher la coupure comprennent un déclencheur thermique, notamment une brasure sélective (33).
  11. Coupe-circuit selon la revendication 10, caractérisé par le fait que le déclencheur thermique agit sur le fil de retenue (11, 29).
  12. Coupe-circuit selon l'une des revendications 1 à 11, caractérisé par le fait que les moyens pour couper l'élément fusible présentent une barre de cisaillement (18, 38) avec au moins une rainure dans laquelle le ou les conducteur(s) fusible(s) s'engage(nt), la barre de cisaillement (18, 38) étant mobile en direction de son axe longitudinal et interagissant avec un support de conducteurs fusibles portant le ou les conducteur(s) fusible(s).
  13. Coupe-circuit selon la revendication 12, caractérisé par le fait que la barre de cisaillement (18, 38) peut être directement sollicitée par la capsule de pression.
  14. Coupe-circuit selon la revendication 12 ou 13, caractérisé par le fait que l'extrémité de la barre de cisaillement (18, 38) tournée vers la capsule de pression (16, 20) est guidée dans un logement et en liaison avec la capsule de pression (16, 20) par une chambre d'expansion (40).
  15. Coupe-circuit selon l'une des revendications 12 à 14, caractérisé par le fait que le support de conducteurs fusibles est mobile en direction de son axe longitudinal et, lors du déclenchement des moyens de coupure, déplacé dans un sens opposé au sens de déplacement de la barre de cisaillement (18, 38).
  16. Coupe-circuit selon l'une des revendications 1 à 15, caractérisé par un élément (indicateur / percuteur) pour indiquer l'état déclenché du coupe-circuit.
  17. Coupe-circuit selon la revendication 16, caractérisé par le fait qu'il est possible d'actionner un sectionneur à coupure en charge situé à l'extérieur du coupe-circuit avec l'élément indicateur.
  18. Coupe-circuit selon la revendication 5 ou 6 et/ou selon la revendication 16 ou 17, caractérisé par le fait que l'élément indicateur est relié à la douille de blocage (27).
  19. Coupe-circuit selon la revendication 18, caractérisé par le fait que la douille de blocage (27) en état de fonctionnement est maintenue dans une position de blocage par l'élément indicateur et l'élément indicateur par le fil de retenue (29).
  20. Coupe-circuit selon l'une des revendications 15 à 17, caractérisé par le fait que l'élément indicateur est relié au support de conducteurs fusibles.
  21. Coupe-circuit selon l'une des revendications précédentes, caractérisé par le fait que les moyens pour déclencher la coupure sont disposés dans un des capuchons de contact du coupe-circuit.
EP00108424A 1999-04-19 2000-04-18 Fusible en particulier fusible à haute puissance Expired - Lifetime EP1047091B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19917425 1999-04-19
DE19917425A DE19917425A1 (de) 1999-04-19 1999-04-19 Sicherung, insbesondere Hochleistungssicherung

Publications (3)

Publication Number Publication Date
EP1047091A2 EP1047091A2 (fr) 2000-10-25
EP1047091A3 EP1047091A3 (fr) 2002-11-27
EP1047091B1 true EP1047091B1 (fr) 2005-03-30

Family

ID=7904934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108424A Expired - Lifetime EP1047091B1 (fr) 1999-04-19 2000-04-18 Fusible en particulier fusible à haute puissance

Country Status (8)

Country Link
EP (1) EP1047091B1 (fr)
AT (1) ATE292324T1 (fr)
CY (1) CY1105044T1 (fr)
DE (2) DE19917425A1 (fr)
DK (1) DK1047091T3 (fr)
ES (1) ES2239959T3 (fr)
NO (1) NO317780B1 (fr)
PT (1) PT1047091E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047256A1 (de) 2008-09-14 2010-03-25 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. Gesteuerte Hochspannungssicherung und Hochspannungsschalter-/Sicherungskombination

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011052805B4 (de) * 2011-08-18 2013-07-18 Phoenix Contact Gmbh & Co. Kg Sicherung
DE102015106867A1 (de) 2015-05-04 2016-11-10 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. Auslösung eines Erdungsschalters einer Schaltanlage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189694A (en) * 1978-02-09 1980-02-19 Westinghouse Electric Corp. Current limiting fuse with improved low current clearing capability
US4369420A (en) * 1980-05-27 1983-01-18 Westinghouse Electric Corp. Current limiting fuse with actuable external means
DE19702780C1 (de) * 1996-02-29 1998-02-05 Driescher Spezialfab Fritz Hochspannungs-Hochleistungs-Sicherung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047256A1 (de) 2008-09-14 2010-03-25 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co. Gesteuerte Hochspannungssicherung und Hochspannungsschalter-/Sicherungskombination

Also Published As

Publication number Publication date
CY1105044T1 (el) 2009-11-04
DE50009891D1 (de) 2005-05-04
NO20002066L (no) 2000-10-20
EP1047091A2 (fr) 2000-10-25
EP1047091A3 (fr) 2002-11-27
DK1047091T3 (da) 2005-07-11
ATE292324T1 (de) 2005-04-15
NO317780B1 (no) 2004-12-13
PT1047091E (pt) 2005-07-29
DE19917425A1 (de) 2000-10-26
ES2239959T3 (es) 2005-10-16
NO20002066D0 (no) 2000-04-18

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