EP2025049A1 - Dispositif de protection contre la surintensite de courant destine a etre utilise dans des appareils de protection contre la surtension avec declencheur mecanique supplementaire, de preference conçu comme percuteur - Google Patents

Dispositif de protection contre la surintensite de courant destine a etre utilise dans des appareils de protection contre la surtension avec declencheur mecanique supplementaire, de preference conçu comme percuteur

Info

Publication number
EP2025049A1
EP2025049A1 EP07728867A EP07728867A EP2025049A1 EP 2025049 A1 EP2025049 A1 EP 2025049A1 EP 07728867 A EP07728867 A EP 07728867A EP 07728867 A EP07728867 A EP 07728867A EP 2025049 A1 EP2025049 A1 EP 2025049A1
Authority
EP
European Patent Office
Prior art keywords
protective device
housing
functional unit
firing pin
fusible
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.)
Granted
Application number
EP07728867A
Other languages
German (de)
English (en)
Other versions
EP2025049B1 (fr
Inventor
Arnd Ehrhardt
Stefanie Schreiter
Georg Wittmann
Hans-Georg Wagner
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.)
Dehn SE and Co KG
Original Assignee
Dehn and Soehne GmbH and Co KG
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
Family has litigation
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Application filed by Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Publication of EP2025049A1 publication Critical patent/EP2025049A1/fr
Application granted granted Critical
Publication of EP2025049B1 publication Critical patent/EP2025049B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01H85/44—Structural association with a spark-gap arrester
    • 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
    • H01H85/05—Component parts thereof
    • H01H85/143—Electrical contacts; Fastening fusible members to such contacts
    • 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
    • H01H85/0411—Miniature fuses
    • H01H2085/0412—Miniature fuses specially adapted for being mounted on a printed circuit board
    • 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
    • H01H85/0411—Miniature fuses
    • H01H2085/0414—Surface mounted fuses

Definitions

  • Trigger preferably designed as a firing pin
  • the invention relates to an overcurrent protection device for use in
  • Overvoltage protection devices with additional mechanical release preferably as
  • Firing pin executed according to the preamble of claim 1.
  • Overvoltage protection devices are used in electrical and information technology
  • Overvoltage events e.g. Lightning events
  • the limitation occurs in overvoltage events by the derivation of
  • Overvoltage protection level may be due to aging or due to
  • thermal separation devices By means of thermal separation devices can be realized within their switching capacity at low leakage currents in the range of mA to some A and in the low voltage range of the varistor usually sufficient protection.
  • the varistor loaded with pulse currents above its capacity or with extremely high current and voltage gradients, the varistor can be passed through or over.
  • thermal breakdown or breakdown of the varistor may occur after a time course of a few tens of ms.
  • varistor discs often indicate the maximum nominal current value of such back-up fuses for adequate protection.
  • Conventional fuses generally respond well below their theoretical adiabatic melting integral value at momentum load.
  • the fuse In addition to the protective function of the overvoltage protection element, the response the fuse often used as a display criterion for the overload and the separation of the overvoltage protection element.
  • the power interruption or the increased voltage drop across the fuse is evaluated.
  • the electrical signal is also used for acoustic displays or the opening and closing of switches for remote signaling.
  • the use of electrical energy for signal delivery has several disadvantages. Many displays require energy and cause unwanted leakage currents. Shutdown on surge current loads of fuses is often undefined and unwanted.
  • the fusible link of fuses can have a variety of damage after the pulse load, which can lead from the separation of individual parallel bottlenecks to the total destruction of the fusible conductor, without a desired high-impedance interruption occurs.
  • Break point and the dielectric strength of the tripped fuse must be higher than the mains voltage.
  • the line withstand voltage is generally taken over by the surge protection device, even with moderate overloads. That is, the fuse is not necessarily burdened with the mains voltage even after their response. This sometimes leads to an undefined separation distance within the fuse.
  • the consumer is at risk because of a defective overvoltage protection.
  • the endangerment of the consumer is greatly increased, in particular in cases in which so-called combi absorbers are used.
  • the overvoltage protection is often implemented in only one device, ie the usual staggering of different performance surge arresters with different levels of protection and simultaneously redundant effect deleted.
  • DE 199 14 313 Al shows the protection of a so-called ignition aid of a spark gap.
  • fuses or reversible fuses are used.
  • the melting of the fuse is used with the aid of electronic circuits for optical, acoustic and / or electronic display.
  • the spark gap should be able to exert a redundant protective function with an increased protection level without an ignition aid.
  • the derivation of a display function from the turn-off of fuses is also known from DE 38 31 935, DE 197 51 470 or for example DE 32 28 471 previously known.
  • US-PS 6,157,529 discloses the interruption of a circuit by means of the disconnection of a fuse and a holding coil of a switch.
  • Ignition aids as described in DE 199 14 313 Al, are also used in combination arresters. With these arresters, the starting aid itself can be designed as an independent overvoltage protection device, which activates the short-circuit element, generally a spark gap, only at the risk of its own overload via a trigger function.
  • a Kombiabieiter is disclosed for example in DE 198 38 776 C2.
  • an advanced overcurrent protection device for use in surge protection devices with additional mechanical release indicate which has a high age-stable momentum current carrying capacity, a mechanical display function or support such a display and signal function and a high switching capacity.
  • the specified overcurrent protection device should have a small size, easy to assemble and have a high peak current resistance and a high switching voltage.
  • This combination includes a fuse suitable for pulse currents with parallel indicator fuse, which takes over a firing pin function.
  • the firing pin can serve for the mechanical triggering of an optical and / or electrical display.
  • the firing pin and the signal function can be carried out floating or floating.
  • the pulse current carrying capacity of the actual fuse becomes close to the theoretical, i. the material-specific melt integral value (Pt value) of the fusible conductor.
  • Pt value material-specific melt integral value
  • an otherwise usual over-dimensioning of the fuse can be avoided.
  • This is necessary in the prior art, since the usual fusible conductors are already overloaded significantly below the theoretical Pt value due to the dynamic current forces, the asymmetrical current distribution and the aging in pulse currents.
  • the reason for this is the geometry of the fusible conductor, the type of contacting of the fusible conductor, the current conduction to and in the fusible conductor, the fusible conductor fixation and additives which cause aging or premature overloading.
  • the small design created by the invention is in the range of conventional device protection fuses of substantially 5x20 mm. Such small devices can be mounted in a particularly simple manner on a circuit board, as an SMD component.
  • the overcurrent protection device comprises a first functional unit containing the mechanical release.
  • This first functional unit has a first Melting on.
  • a second functional unit is designed as actual overload protection and has a second melting element.
  • Each of the functional units is arranged in a housing, wherein the respective
  • Melt conductors are each arranged inside the housing and to the
  • End caps are connected electrically.
  • the first and the second functional unit are electrically connected in parallel.
  • Parallel connection is in series with the overvoltage protection device.
  • the functional units form a common mechanical composite, each housing being surrounded by a separate or both housing by a common elastic jacket.
  • the end caps of each side of the respective functional unit are connected electrically and mechanically connected in a connection extension, which allows or facilitates the already mentioned PCB assembly of the entire device.
  • a connection extension which allows or facilitates the already mentioned PCB assembly of the entire device.
  • a final cap of the first functional unit is a chamber for
  • Striker is held by the first fusible element in its rest position. With the melting of the first melting element, the spring biasing force comes to
  • the first fusible element consists of a wire, which has a high
  • the housing of the first functional unit forms an arc switching chamber, which consists of a tubular body, which laterally adjoins a cavity which forms the chamber for receiving the firing pin. Between the arc switching chamber and the cavity is one or more insulating plates are arranged, through which or which the first
  • the arc switch room is filled with an extinguishing agent.
  • the cavity with the firing pin is limited by a Stülpkappe, wherein the side facing away from the arc furnace side of the Stülpkappe forms a stop for the striking plate of the firing pin and thus a path limitation.
  • the impact plate itself can be surrounded by an insulating cap.
  • the striking plate is also designed as a punch or striker, the Displacement by a stop and a recess within a
  • the first fusible element may consist of a composite material and at least one constriction and / or a portion with different
  • the second functional unit has a hollow cylindrical housing with lateral
  • Functional unit may have the shape of a pipe or a hollow cylinder.
  • the wire or hollow cylindrical melting element of the second functional unit is by force and / or positive connection with the insides or with corresponding
  • the hollow cylinder of the second melting element may have defined bottlenecks and / or tapers.
  • the housing of the second functional unit has a filling.
  • Filling can consist of a high-density bulk material or contain compressible materials.
  • this consists of
  • the second melting element can be located in the housing guide webs,
  • Both the first and the second functional unit may be surrounded by a common outer housing or disposed in such a housing.
  • FIG. 1 shows a basic illustration of the electrical arrangement of FIG.
  • FIG. 2 is a side view of an embodiment of the
  • FIG. 3 is a sectional view through a preferred embodiment of the first
  • FIG. 6 shows the arrangement of a resistance material in the arc switching space of the first functional unit
  • FIG. 7 shows the basic structure of the second functional unit with securing band or securing wire
  • FIG. Fig. 8 is a sectional view of the embodiment similar to Fig. 7, but with
  • Fig. 1 shows a schematic representation of the invention.
  • the invention is a schematic representation of the invention.
  • a functional unit Al takes over the overload protection for the overvoltage element B and forms the actual one
  • the presented overcurrent protection device for overvoltage protection devices preferably consists of an electrically as well as geometrically, ie spatially parallel fixed assembly of two functional units 1 and 2.
  • the electrical contacting is preferably carried out together via PCB contactable terminals 6, which at the same time for mechanical joining can serve the parallel functional units 1 and 2.
  • the terminals 6 shown in Fig. 2 may have a taper, whereby the position of the firing pin relative to the board (not shown) is clearly definable.
  • Functional units also assume a parallel to the printed circuit board, not shown, or any angular position.
  • Each functional unit 1; 2 is enveloped or surrounded by an elastic jacket 4 on the circumference and by common lateral connection caps 3 and is thereby mechanically stabilized and fixed.
  • the elastic jacket 4 may be in a simple form as a tube or
  • the above measures and the fixation on the circuit board lead to an increase in the switching capacity of the functional units.
  • the first functional unit 1 realizes the desired mechanical
  • the second functional unit 2 assumes the other, already mentioned
  • the first functional unit 1 includes a mechanism for triggering the
  • Firing pin By the firing pin can at a distance to a maximum of half of
  • the height of the transmittable force can be variably adjusted and set from approximately 1 N to several 10 N at a defined distance.
  • prestressed compression springs are used for this purpose.
  • the firing pin itself can be used as a visual display in an analogous manner to a simple conventional indicator.
  • spring and gas generators or
  • the necessary high and aging stable Preload realized with wire which has a high tensile strength.
  • the Pt value of the wire is adjusted so that it is significantly smaller than the Pt value of the second functional unit. A value of less than 1% is preferred.
  • the meter resistance of the wire is significantly higher than that in the second functional unit. Preferably, larger ratios than 1: 100 are used.
  • the wire may be wound on a carrier to provide additional impedance.
  • the wire of the first functional unit remains almost unloaded under pulse load.
  • the fusible conductor is also almost distortion-free interrupted by a current which is a multiple of its current carrying capacity. This is also the case with errors due to line frequency currents.
  • Overload factors of approximately 20 to 1000 are preferred. These factors guarantee adiabatic heating of the wire and a so-called strip decay of the fusible conductor.
  • This strip decay leads to a high switching voltage.
  • the height of this tension can be influenced by the geometric design and the choice of material of the wire.
  • the magnitude of the switching voltage is also determined by the error case and the impedance ratios of the fault circuit.
  • the generated arc voltage can be increased due to the increase in the inductance of the circuit.
  • switching voltages of a few 100 V up to several kV can thus be generated even with small dimensions of the functional units. These voltages are generally sufficient to ignite in particular spark gaps with Gêttladungsglazedn.
  • the functional unit 1 consists of an arc switching chamber 17 and a cavity 16, which serves to receive the firing pin 5.
  • the arc switch chamber 17 and the cavity 16 are adjacent to each other on a common axis.
  • the arc switch chamber 17 is bounded by a fixed tube 7, for example made of ceramic, and the caps 8 and 9.
  • the fuse element 11 arranged in the interior is led through the arc switching chamber 17 and the cavity 16 to the firing pin 5.
  • a hole is provided in the cap 9.
  • the platelets 10 are preferably made of an elastic and arc-resistant insulating material. This allows easy piercing of the material and close nestling against the fusible conductor 11, whereby an undesirable gap between platelets and fusible conductor can be avoided.
  • the arc switch room can be equipped with an extinguishing agent 15, e.g. be filled from quartz sand material.
  • the cavity 16 is enclosed by a special connection cap 9.
  • the firing pin 5 has an outer shield which has a larger dimension than the cavity 16.
  • the firing pin 5 also has a bore through which the fusible conductor 11 is guided and fastened.
  • a prestressed spring 12 which serves to carry out the firing pin function.
  • FIGS. 4a to 4c show alternative design variants of the firing pin design.
  • the complete firing pin is located in the cavity of the cap 9.
  • an e.g. electrically conductive striker covered by an additional cap 13 made of insulating material.
  • the contact of the firing pin is carried out floating and the cap 13 serves as additional protection against leaking gases or dirt.
  • the stroke and the end force of the firing pin are defined by the stop on the edge of the hood cap 21.
  • the plate 10 in front of the cavity of the cap 9 can be dispensed with.
  • the seal to prevent the blowing out of plasma is realized by the design of the firing pin of FIG. 4c itself. Such a design variant is also suitable for the realization of a pyrotechnic firing pin.
  • insulating platelets 10 serve to seal the switching space, whereby leakage of ionized plasma is prevented. This plasma would not be in contrast to that are discharging behavior of the arrester and mean in the tight space conditions a hazard.
  • the insulated plate 10 also prevents a stable footing of the switching arc on the opposite terminal cap, whereby the switching capacity and thus the load on the first unit is reduced.
  • the entire implementation may consist of an insulating material.
  • the power supply via the front hollow cylinder cap and the firing pin to the wire.
  • the current can be conducted via the spring to the wire, if the spring diameter is greater than the isolated area.
  • wire feedthrough can also be used for fastening the firing pin.
  • wire wire composite materials may be used for the wire.
  • Fig. 5 shows an embodiment with a multi-composite
  • This design variant has the advantage that the melt conductor evaporates only in the region of the bottleneck. This allows the arc region to be optimally positioned within the arc quenching chamber and reduces the risk of plasma spewing out.
  • a further impedance is connected in addition to the fuse impedance, specifically in the form of a resistor 22.
  • This design variant has the advantage that the current can be limited until and also after the melting of the fuse conductor. This results in a positive switching capacity.
  • Arc switching room introduced at which the actual fusible conductor is contacted Arc switching room introduced at which the actual fusible conductor is contacted.
  • resistors or resistance materials As an alternative to introducing resistors or resistance materials, other impedances can also be used.
  • the cap material 8, 9 of the functional unit 1 consist of a resistance material.
  • a common connection cap 3 can be above the current transition to the functional unit 2 of resistance material.
  • measures or measures to increase the impedance such as bottlenecks or meanders, in the connection area between the functional units 1 and 2 are arranged.
  • the reduction of the bias voltage and the centering of the wire can be done by a solder mount in the feedthrough area.
  • the feedthrough and the solder e.g., low melting temperature, low volume
  • the feedthrough and the solder are selected so that the resulting arc detaches the attachment of the wire.
  • the wire can also be wound several times to distribute the force around the spring.
  • the bolt can be made loose or captive. Likewise, electrically conductive versions of the bolt, but also isolated variants are possible.
  • FIG. 7 shows by way of example a variant of the second functional unit.
  • This second functional unit implements the basic functions of the protection device.
  • the attachment of the fusible conductor 30 is carried out only with a minimal use or dispensing with media which in the normal state or when heated, an aging of the fusible conductor, e.g. by oxidation or by diffusion.
  • media which in the normal state or when heated, an aging of the fusible conductor, e.g. by oxidation or by diffusion.
  • Such negative media are solders, solders and other materials that tend to diffuse or react with the fusible link. This also applies to the filling medium.
  • the fusible conductor 30 is integrally formed in wire form or as a hollow cylinder to achieve a maximum pulse current carrying capacity.
  • the Hohlzy is linderform a conventional division of parallel fusible leads preferable because it despite lower switching capacity offers lower disadvantages in terms of aging and a possibly uneven current distribution.
  • the tapers can take place both in the circumference and in the layer thickness.
  • webs can be applied electrically conductive or non-conductive, whereby the arc can be divided or partially extremely constricted.
  • the waveguide can be designed as a hollow cylinder, but also as a conductive coating of a cylinder.
  • the material may e.g. be gas.
  • a high mechanical strength, a sufficient switching capacity and a high pulse current carrying capacity is given.
  • an embodiment may be useful as a hollow cylinder with internal coating.
  • Such a design also causes a uniform distribution of the pressure wave to the outer wall or to the outer housing.
  • the waveguide can also offer the possibility of integration of the firing pin despite separate arc switch room.
  • the material for the fusible conductor preference is given to using copper, silver or their alloys. When using copper, it is expedient to apply a protective layer against oxidation.
  • the guide of the fusible conductor is centrally through the housing 31.
  • the power supply to the caps 32 is made without or with little current loops.
  • the filling medium 33 is chosen so that it does not allow dynamic movements of the fusible conductor 30.
  • quartz sand is selected as the filling medium, an optimum can be achieved
  • guide webs 34 may be provided as shown in FIG. The
  • Guide webs 34 can be made insulating or as metal plates for subdividing the arc.
  • the webs 34 can be connected to each other for mechanical guidance or in a further variant parallel spaced supported on the inner wall of the housing 31.
  • so-called stone sand is used.
  • high-density bulk materials are suitable for filling.
  • filling media based on epoxy or silicone with or without curing are applicable. These materials can be added high levels of admixtures of extinguishing media, such as sand, ceramics, glass or gas-emitting substances.
  • a sand filling can additionally be used or the use of stabilizing bars or stabilizing liquids for damping movement is advantageous.
  • compressible filling media can be provided or possibilities for damping the pressure wave can be realized. On the one hand, this can be measures for equal distribution of the pressure.
  • additional elastic, but also rigid cylinder between the fusible conductor and the housing wall can be realized.
  • breaking walls and compensation chambers can be created.
  • the filling media may also contain implosive ingredients. Hollow spheres made of glass or ceramic can be used here.
  • the fusible conductor can also be guided in solids. These solids can be designed to support the extinguishing capacity gas-emitting.
  • gas donating substances are e.g. Polymers such as POM, hard gas or ceramics or substances with such admixtures for use.
  • Pulse current carrying capacity is reached, which is close to the theoretical value of the fusible conductor.
  • the described embodiment is sufficient for the requirement of overcurrent protection devices for numerous overvoltage protection devices.
  • Kombiabieiter When using the invention for Kombiabieiter may be useful due to special requirements and other weights of the requirements of the respective protective devices for their design and embodiment. If very high momentum current carrying capacities are to be achieved, this leads to significant cross sections of the fusible conductor even in the case of copper. Due to the low The size of the functional units for this application is the maximum arc switching power depending on the housing design. Simple round wires or even waveguides lead to larger diameters exceeding the load limit. To achieve a high switching capacity, it is therefore expedient to choose a varying design of the fuse conductor.
  • Pulse current resistance very high can be used as a fusible conductor a flat wire.
  • Flat wires with a ratio of width to thickness of ⁇ 4: 1 are preferably used here.
  • the realization of the fusible conductor as a flat wire also allows additional optimization possibilities.
  • the height of the peak current resistance can be controlled quite easily. This value is particularly important for the protection of varistors in so-called trigger circuits of combination arresters.
  • the position of the flat wire in the fuse influences, in addition to the geometric design of the terminals of the second functional unit, the effect of the dynamic current forces on the fusible conductor. If the flat edge of the fusible conductor is perpendicular to the current force effect and if the connection lengths of the second functional unit are as straight as possible, a very high peak current value can be controlled (see principle arrangement according to FIG. 9).
  • the overcurrent protective device responds in the latter case almost exclusively due to the current forces and not due to the adiabatic heating.
  • the thermal load is below the melting integral value.
  • the length of the power supply can be arranged in parallel one above the other
  • Functional units can already be achieved by the variation of the order of the functional units without changing the construction parts.
  • the peak current strength can be further reduced and the extinguishing capacity increased Meander or windings are incorporated.
  • the functional units 1 and 2 have high-strength housings.
  • materials for these housings special ceramics, but also wound glass fiber materials can be used.
  • each housing or both housings are jointly enclosed by an elastic cylinder. This is used as an extra protection in case of overload of the housing or gas leaks between the caps and the housing. Furthermore, the outer rollover distances are extended and critical field strength increases or endangered sliding distances avoided.
  • the material of the elastic cylinders can also consist of a gas-emitting substance or be coated with such a material. This results in the outgassing of hot gas or soot from the fuse to the gas delivery, whereby uniform manifestations are avoided and surface discharges can be prevented.
  • other parts e.g. be provided in the form of webs, which serve for Wegverheyrung.
  • the switching capacity can be further increased compared to a single functional unit.
  • the measures shown lead to a performance that could be significantly increased compared to conventional device protection fuses of the same size. This applies to both the pulse current carrying capacity and the switching capacity.
  • Figs. 11 and 12 show alternative arrangements for mounting the second functional unit 2 on a circuit board. These arrangements should lead to the lowest possible current loop formation.
  • the outer cap has solder connection tabs 40, which are also suitable for SMD mounting.
  • Fig. 12 shows a variant in which the functional unit can be soldered directly into the printed circuit board 41, solderable terminals 42 being used for this purpose.
  • the attachment of the electrically parallel functional unit 1 can also be carried out according to FIG. 13.
  • the functional unit 1 and 2 the made electrical connection via printed conductors of a board and realized if necessary via printed or discrete impedances. If the switching capacity of a simple board fuse is sufficient, the second functional unit 2 can also be designed as such a fuse.

Landscapes

  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un dispositif de protection contre la surintensité de courant destiné à être utilisé dans des appareils de protection contre la surtension avec un déclencheur mécanique supplémentaire, de préférence conçu comme percuteur. Selon l'invention, une première unité fonctionnelle contenant le déclencheur mécanique comporte un premier élément fusible. Une seconde unité fonctionnelle, conçue comme protection contre la surcharge, possède un second élément fusible. Chaque unité fonctionnelle est agencée dans un boîtier, des capots de recouvrement opposés, latéraux étant situés sur le boîtier respectif et les conducteurs fusibles se trouvant respectivement à l'intérieur du boîtier et étant raccordés électriquement aux capots de recouvrement. La première et la seconde unité fonctionnelle sont montées en parallèle électriquement, ce montage en parallèle étant monté en série avec l'appareil de protection contre la surtension. Les unités fonctionnelles forment un ensemble mécanique commun, chaque boîtier étant entouré d'une enveloppe séparée ou les deux boîtiers étant entourés d'une enveloppe élastique commune ou d'un autre boîtier, toutefois élastique.
EP07728867A 2006-06-08 2007-05-08 Dispositif de protection contre la surintensite de courant destine a etre utilise dans des appareils de protection contre la surtension avec declencheur mecanique supplementaire, de preference conçu comme percuteur Not-in-force EP2025049B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006026711 2006-06-08
DE102006034404.9A DE102006034404B4 (de) 2006-06-08 2006-07-25 Überstromschutzeinrichtung für den Einsatz mit Überspannungsschutzgeräten, mit einem zusätzlichen als Schlagbolzen ausgeführten mechanischen Auslöser
PCT/EP2007/054414 WO2007141104A1 (fr) 2006-06-08 2007-05-08 Dispositif de protection contre la surintensité de courant destiné à être utilisé dans des appareils de protection contre la surtension avec déclencheur mécanique supplémentaire, de préférence conçu comme percuteur

Publications (2)

Publication Number Publication Date
EP2025049A1 true EP2025049A1 (fr) 2009-02-18
EP2025049B1 EP2025049B1 (fr) 2013-01-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07728867A Not-in-force EP2025049B1 (fr) 2006-06-08 2007-05-08 Dispositif de protection contre la surintensite de courant destine a etre utilise dans des appareils de protection contre la surtension avec declencheur mecanique supplementaire, de preference conçu comme percuteur

Country Status (6)

Country Link
EP (1) EP2025049B1 (fr)
JP (1) JP2009540777A (fr)
CN (1) CN101461113B (fr)
DE (1) DE102006034404B4 (fr)
RU (1) RU2407127C2 (fr)
WO (1) WO2007141104A1 (fr)

Families Citing this family (22)

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DE102008049458A1 (de) 2007-10-15 2009-04-30 Dehn + Söhne Gmbh + Co. Kg Funkenstreckenanordnung für höhere Bemessungsspannungen
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Publication number Publication date
DE102006034404A1 (de) 2007-12-13
EP2025049B1 (fr) 2013-01-02
DE102006034404B4 (de) 2014-05-28
JP2009540777A (ja) 2009-11-19
WO2007141104A1 (fr) 2007-12-13
RU2407127C2 (ru) 2010-12-20
CN101461113B (zh) 2011-12-14
CN101461113A (zh) 2009-06-17
RU2008149083A (ru) 2010-07-20

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