EP3580772B1 - Fusible conçu pour des applications basse tension - Google Patents

Fusible conçu pour des applications basse tension Download PDF

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Publication number
EP3580772B1
EP3580772B1 EP18702984.8A EP18702984A EP3580772B1 EP 3580772 B1 EP3580772 B1 EP 3580772B1 EP 18702984 A EP18702984 A EP 18702984A EP 3580772 B1 EP3580772 B1 EP 3580772B1
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EP
European Patent Office
Prior art keywords
fuse
short
circuit
safety fuse
housing
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.)
Active
Application number
EP18702984.8A
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German (de)
English (en)
Other versions
EP3580772A1 (fr
Inventor
Arnd Ehrhardt
Torsten Schwandner
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.)
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Publication date
Application filed by Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Priority to SI201830335T priority Critical patent/SI3580772T1/sl
Publication of EP3580772A1 publication Critical patent/EP3580772A1/fr
Application granted granted Critical
Publication of EP3580772B1 publication Critical patent/EP3580772B1/fr
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Anticipated expiration legal-status Critical

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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
    • H01H85/0039—Means for influencing the rupture process of the fusible element
    • H01H85/0047—Heating means
    • H01H85/0065—Heat reflective or insulating layer on the fusible element
    • 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
    • H01H85/0039—Means for influencing the rupture process of the fusible element
    • H01H85/0047—Heating means
    • 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
    • H01H85/0039—Means for influencing the rupture process of the fusible element
    • H01H85/0047—Heating means
    • H01H85/0056—Heat conducting or heat absorbing means associated with the fusible member, e.g. for providing time delay
    • 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
    • H01H85/055—Fusible members
    • H01H85/12—Two or more separate fusible members in parallel

Definitions

  • the invention is based on a fuse for low-voltage applications to protect devices that can be connected to a supply network, in particular overvoltage protection devices such as spark gaps or varistors, consisting of at least one fusible link located between two contacts in a fuse housing and a short-circuit auxiliary contact with an internal isolating gap to the fusible link according to claim 1.
  • overvoltage protection devices such as spark gaps or varistors
  • fuses are used as backup protection for surge arresters in the so-called shunt branch.
  • a corresponding fuse must guarantee protection in the event of a short circuit.
  • the use of the "short-circuit” method can solve the problem of the volatile short-circuit values mentioned above to a very limited extent. Rather, the “short circuit” method converts an undefined impedance of the overvoltage protection device into a defined impedance in the event of a fault. This can be seen in the same way as a short-circuiter that is connected in parallel to the overvoltage protection. In the case of a low-resistance metallic connection, the fuse can withstand the short-circuit current of the network are loaded and only if this is sufficiently large, a defined shutdown takes place by the fuse. This is not always the case in networks with volatile short-circuit currents.
  • the fuse In the event of a low-resistance short circuit, the fuse is loaded with the maximum available short-circuit current. In the event of an impedance-related short circuit, the current load on the fuse drops, which means that shutdown at low currents is questionable.
  • the arc or arc erosion to the fusible conductor has an impedance-like effect, which limits the current. This may result in a delayed disconnection or only further local damage to the fusible conductor, as a result of which very long arcing times or a destruction of the fuse by the arc extension occur, with the consequence of higher residual risks.
  • circuit breakers with tripping characteristics is an alternative here, but these switches are significantly more expensive than fuses and so, for reasons of cost, are not suitable for all applications.
  • the special properties of a fuse basically allow only very few design options with regard to a variation or setting of the protection area of the fuse.
  • the DE 10 2008 047 256 A1 discloses a high-voltage fuse with a controllable drive for a shear bar, which destroys several bottlenecks.
  • the control can be carried out from a separate control depending on the fault current.
  • the DE 10 2014 215 279 A1 discloses a fuse for a device to be protected which is connected in series with the fuse.
  • the melting of a fusible conductor is determined by its material and geometric properties, so that, depending on the material and / or geometry of the fusible conductor, a respective amount of heat Q is necessary for the evaporation of the fusible conductor.
  • the DE 10 2014 215 279 A1 to a further development of a fuse in such a way that additional contacts are provided, one of the additional contacts representing a trigger contact in order to cause the fusible conductor to melt directly or indirectly.
  • the fusible conductor can have a predetermined breaking point in the area of one of the further contacts.
  • the fusible conductor is surrounded at least in sections with an extinguishing medium, in particular with sand.
  • An arc is ignited between the additional contact and the fusible link, creating a current flow in an auxiliary path parallel to the device to be protected.
  • This parallel path relieves the device to be protected and increases the current load on the fusible conductor. This can then lead to a faster power cut-off by the fuse.
  • the effect is similar here those known separate short-circuiters.
  • the impedance of the path is increased, among other things, by the relatively long arc, which bridges the separating distance between the auxiliary contact and the fusible conductor, so that the effectiveness of the current increase remains limited. A disconnection of the fuse cannot therefore be guaranteed under all conditions.
  • the DE 10 2013 005 783 A1 shows a device for generating a safe, low-resistance electrical short circuit independent of the operating voltage.
  • This device is based on two electrical, in particular plate-shaped connection parts, which carry a different potential.
  • An insulation path is formed between the connection parts.
  • the short circuit can be implemented by at least partially penetrating or destroying the insulation path.
  • connection parts are arranged closely adjacent and including the isolation path.
  • the isolation path is designed as an isolation film or a film-like coating. Furthermore, there is an exothermic mass in the immediate vicinity of the insulation section, which releases its exothermic energy when energized and leads to melting or deformation of the insulation section, so that the potential separation between the connection parts is canceled and the desired short circuit occurs.
  • DE 10 2013 005 783 A1 requires a coordinated, separate, external overcurrent protection device to interrupt the short circuit.
  • the fuse consists of at least one fusible link located between two contacts and arranged in a fuse housing, as well as a short-circuit auxiliary contact with an internal isolating distance to the fusible link.
  • the fuse to be specified should can be implemented in a space-saving and cost-effective manner and have the option of triggering a short-circuit current via the auxiliary connection or auxiliary contact. External, short-circuit-resistant switches should be dispensed with.
  • the fuse according to the invention is intended for use in the shunt branch in combination with overvoltage protection devices.
  • the possibility of active control of the short-circuit auxiliary path takes place by destroying an insulation element, in particular in the form of an insulation film, with recourse to an exothermic reaction.
  • the insulation element used in particular the insulation film, meets the necessary electrical requirements for an insulation path for use in the shunt branch, so that no additional external switching devices are necessary.
  • both a metallic, low-resistance short circuit between the fusible conductor or conductors and the auxiliary contact, but also a short circuit with impedance and spark formation, can be implemented.
  • the insulation element is protected from thermal damage in the event of pulse loads due to the heating of the fusible conductor or conductors.
  • the fuse according to the invention can have one or more parallel fusible conductors.
  • the fusible conductors can be surrounded by an extinguishing medium within the fuse housing.
  • the fusible link (s) can have conventional bottlenecks.
  • the fuse according to the invention is also the possibility of additionally designing the fuse according to the invention as a triggerable fuse, with a trigger device being activated for the controlled disconnection of the fusible conductor in the event of malfunctions or overload states of the respectively connected device.
  • a section of the fusible conductor in the fuse housing can be designed to be exposed, with a mechanical separating element being able to be introduced into the extinguishing agent-free area via an access in the housing in order to mechanically destroy the at least one fusible conductor independently of its melting integral, depending on the trigger device.
  • Such a separating element can be designed as a blade or a cutting edge. It is also possible to drive the separating element from a bridge igniter in the direction of the fusible link.
  • the at least one fusible conductor can have a large number of known electrical bottlenecks, as already mentioned above, which are designed for the nominal load of the respective fuse. Further, additional geometric constrictions can be provided which, when subjected to tension, can be separated by tearing as a function of the trigger unit.
  • the fuse link there is at least one inside the fuse housing Externally activated switching device designed to overcome the isolating distance in order to trigger a low-resistance or impedance short circuit.
  • the switching device has an insulation element which forms the isolating distance and which undergoes a change of state due to an exothermic activator and the activator is connected to at least one control connection.
  • the insulation element can be designed as an insulation film.
  • the exothermic activator can also be implemented as a film, here as a reaction film, the reaction film being connected to an ignition device.
  • the exothermic activator can have a bridge igniter which directly or indirectly destroys the insulation element.
  • the bridge igniter can also drive a conductive element to overcome the isolating distance, whereby the desired short circuit can be triggered.
  • the ignition device preferably has an ignition element which heats up when a current flows, the ignition element being connected to the at least one control connection.
  • a plurality of fusible conductors can be formed parallel to one another in the fuse housing, the plurality of fusible conductors being guided through a disk located in the housing and supported on the fuse housing.
  • the switching device can then be located on or on the pane.
  • the fusible conductor or conductors have sections with a reduced area and / or a reduced cross-section over their respective length expansion.
  • the switching device according to the invention is, however, located outside of these sections which are reduced in terms of area and / or cross-section.
  • cap-shaped contacts are preferably used on the end face, the short-circuit auxiliary contact being guided over one of the cap-shaped contacts.
  • an isolated, separated area can be formed in the respective cap, which area forms the auxiliary contact.
  • overvoltage protection devices or overvoltage protection elements use spark gaps or varistors, suppressor diodes, gas discharge tubes, capacitors and non-linear resistors and combinations thereof.
  • the previously known elements generally have a non-linear response behavior or a non-linear characteristic curve. If the overvoltage protection elements respond frequently or if there is an overload due to excessively high or long-lasting overvoltages or overcurrents, the corresponding overvoltage protection devices may gradually age or be destroyed.
  • the causes of such an overload are varied and often specific to the respective type of protective device.
  • varistors When using varistors as overvoltage protection elements, there is a risk that they will be destroyed over a long period of time by very small leakage currents as they age gradually.
  • Known thermal disconnection devices are used to protect against such loads.
  • the thermal disconnection devices can, within their switching capacity, with small leakage currents in the range from milliamperes to a few amperes and in the nominal voltage range of the varistor Realize adequate protection. If the varistor is loaded with pulse currents above its capacity or with extremely high current and voltage steepnesses, the varistor can break down or flash over. When exposed to long-lasting transient or line-frequency overvoltages, thermal breakdown or breakdown of the varistor can occur after a period of a few 10 ms. Such error states cannot be controlled by the usual thermal disconnection devices, since their response time is several seconds.
  • varistors often specify the maximum rated current value of backup fuses for adequate protection.
  • Conventional fuses generally respond at a rated current load well below their theoretical adiabatic melting integral value.
  • the load limit of the varistors is already well above the theoretical values of the fuses and thus far above the practical maximum values. This means that pulse values that the varistors can derive multiple times without any problems can destroy the backup fuse even with a single load.
  • manufacturers of varistors often recommend using larger, more powerful fuses. In the event of a fault, however, this can lead to considerable damage to the device due to the higher I 2 t load, which occurs as a result of the too late triggering.
  • Fuses with rated currents in the range of less than 100 A with passive behavior are not able to provide complete protection for surge protection devices. If a fire or arc hazard is taken into account, currents of a few milliamperes up to maximum short-circuit currents must be interrupted or short-circuited safely and quickly. The driving line voltage can even be above the line voltage.
  • the above-mentioned problem is often circumvented or solved by a combination of different protective devices. The combination of several protective devices, however, requires functional coordination and requires additional space. If a protective device becomes effective outside of its switching capacity or if two different protective devices respond at the same time, a risk to the environment can often not be safely ruled out.
  • the proposed solution is based on one or more parallel fuse fusible conductors, preferably arranged in an extinguishing medium.
  • the fusible conductors have bottlenecks in a row, the number of which corresponds to the usual design for the corresponding nominal voltage of the fuse.
  • the fuses according to the invention have a third connection capable of carrying short-circuit currents, which is led radially or axially outward.
  • the switching device according to the invention is located within the fuse and can be activated actively but also passively if necessary.
  • This switching device meets the dielectric strength requirements for use in the shunt branch.
  • the dielectric strength corresponds at least to the protection level of the arrester to be protected during normal operation.
  • the switching device is designed in such a way that a preferably metallic short circuit is implemented between the auxiliary connection and the main fusible conductor.
  • the switch is designed for a short reaction time as a short-circuiter on the basis of an exothermic reacting film or on the basis using a bridge igniter.
  • an internal short-circuit bridge When using parallel fusible conductors, an internal short-circuit bridge enables a single switch to be used.
  • the short-circuit bridge can be designed with low resistance but also with impedance.
  • the highest requirements for the short-circuit current carrying capacity of the short-circuit auxiliary contact when used with overvoltage protection devices are tied to the required pulse current carrying capacity of the fusible conductor (s), in which the fuse in the fusible conductor is not to be disconnected.
  • the dimensioning of the fusible link determines, among other things, the time / current characteristic.
  • the auxiliary contact of the fuse and thus also the entire short-circuit path has a current-carrying capacity which satisfies this characteristic curve, at least in the range of the short-circuit currents to be expected.
  • the pulse current loads for arresters based on varistors are lower than those for arresters based on spark gaps.
  • a maximum load of 100 kA 10/350 ⁇ s is achieved with lightning arresters.
  • the Fusible link of a fuse should meet the above-mentioned requirement in the application described.
  • this requirement corresponds approximately to a fuse with a nominal current of 315 A.
  • a voltage in the range of the line-to-line voltage of the network in which the arrester is used is selected. This means that the fuse is suitable for a voltage of 400 V in a standard 230/400 V network.
  • the Fig. 1 shows a conventional fusible link for a fuse, designed as a ribbon-shaped fusible link 1 with constrictions 2, which lead to a reduction in area or cross-section in the corresponding area.
  • the bottlenecks 2 shown in principle according to Fig. 1 are already made longer in the longitudinal direction of the fusible conductor 1 in comparison to known bottlenecks. This results in an advantageous reduction in the rated current of the fuse with the same pulse current carrying capacity.
  • the Fig. 2 now shows a longitudinal section through a fuse with fuse housing 6 and cap-shaped connection contacts 9.
  • the switching device according to the invention which can be activated externally, is located inside the fuse housing 6.
  • the fusible conductor 1 shown has the constrictions 2 already explained in a partial section of its longitudinal extent.
  • a short-circuit auxiliary contact 3 is located below the fusible conductor and another short-circuit auxiliary contact 3 is located above the fusible conductor 1.
  • a sandwich arrangement of an insulation film 4 and an exothermic reaction film 5 is located inside the housing 6 of the fuse.
  • the exothermic reaction film 5 is connected to an ignition device 7, which can be controlled via one or more control lines 8.
  • passive ignition options (not shown) can be provided.
  • the ignition takes place with an ignition element, which is overloaded with a small current and forms an arc (see Figure 4b ).
  • the ignition can also take place with a flashover through a spark gap, a transformer or the like or by means of a thermal heating circuit.
  • the externally accessible part of the short-circuit auxiliary contact 3 is located in a wall section of the housing 6, but can also, as in FIG Figure 6a and 6b shown, are led out isolated in the region of one of the connection caps 9.
  • the switching device according to Fig. 2 Above the fusible conductor 1 starts from a reaction film 5 which is almost in direct contact with the fusible conductor 1. This arrangement ensures that the reaction film 5 is not triggered unintentionally or is not damaged when the fusible conductor 1 is heated up in the event of a pulse load.
  • an example of an arrangement below the fusible conductor 1 with an electrically conductive part 10, possibly also with impedance, can avoid excessive temperature loading.
  • the insulation film 4 is dimensioned in such a way that the operating voltage of the network and also the usual function of the overvoltage protection do not cause a flashover due to breakdown.
  • a brief temperature load for example in the case of impulse loads, does not lead to thermal damage to the insulation film and thus does not trigger an exothermic reaction. In the case of higher loads and thus greater or longer temperature increases, however, ignition is definitely desirable.
  • the stacking arrangement "insulation film - reaction film" can be exchanged.
  • the film 4 can be attached in the area of the undiminished cross section of the fusible conductor (as shown).
  • the fusible conductor can also have additional cooling surfaces, for example in the form of widened areas.
  • another material can be arranged between the fusible conductor and the insulation film, which forms a thermal barrier.
  • the Fig. 3 shows according to the illustration Fig. 1 a band-shaped fusible conductor 1 with constrictions 2.
  • the further developed fusible conductor 1 has an enlarged area 11. This makes it possible to fix the switching device according to the invention in this area 11 on the fusible conductor.
  • the Figure 4a illustrates a side view of a fusible conductor 1 with a switching device according to the invention, omitting the fuse housing and the connection caps.
  • the switching device is designed as a stacked arrangement.
  • reaction film 5 is located above the insulation film 4 and is connected in a suitable manner by means of an ignition device 7, which is controlled via connections 8.
  • the arrangement of the element 10 between the fusible conductor 1 and the insulation film 4 protects the latter from thermal overload.
  • a minimal gap area 12 can be provided between the fusible conductor 1 and the insulation film 4 or the part 10. This gap area can be designed in such a way that when the switch is actuated, the gap area 12 is passively overturned.
  • the embodiment according to Figure 4a In principle, it also enables the switching device to be arranged in the immediate vicinity of one of the constrictions 2.
  • the Figure 4b shows design variants for an ignition device with an ignition element A or B in different views.
  • the ignition element A can be implemented, for example, as a printed fusible conductor on a circuit board.
  • the ignition element B is arranged as a wire in a cutout of a printed circuit board, which is subject to heating when there is a corresponding current flow, so that the exothermic reaction of the reaction film can be triggered.
  • the fusible conductors 1 are passed through a common disk 13 made of a material with good electrical conductivity or impedance.
  • the disk 13 is supported on the inner wall of the fuse housing 6.
  • the switching device according to the invention is located on or on the disk 13.
  • an electric arc can also occur in the lead-through area between the disk 13 and the fusible conductors 1, which can cause greater damage to the fusible conductor, particularly when it is attached in the narrow point area.
  • the disk 13 can consist of metal, but also of conductive ceramic or graphite.
  • switching devices using a bridge igniter are also possible, as shown in FIG Figures 6a and 6b is illustrated.
  • the metallic part 16 bridges the distance to the auxiliary contact 3 or by means of an insulating film between the aforementioned parts.
  • the Figure 6a and 6b show a film insulation 14 in this regard.
  • auxiliary contact 3 and the control lines 8 can be introduced axially through one of the connection caps 9.
  • the auxiliary contact 3 is electrically isolated from the cap 9, for example with an insulating part 15. Within the fuse, near the pane 13, there is an area without an extinguishing agent filling.
  • the insulating film 14, which is isolated from the pane 13 by the auxiliary contact 3, is attached in this area.
  • the aforementioned movable part 16, in which the bridge igniter is located as an actuator 17, is integrated in the area of the auxiliary contact 3.
  • the part 16 is moved in the direction of the film 14 and disc 13.
  • the insulation film 14 is destroyed in the process.
  • the part 13, that is to say the disk, but also the conductive part 16 can be provided with a notch device in order to sever the insulation film 14 quickly and safely.
  • the movement of the part 16 is stopped at the disk 13.
  • the disk 13 is connected in an electrically conductive manner to the auxiliary connection 3 via the metallic part 16.
  • This connection can be supported positively.
  • a further improvement of the connection is possible if a deformation of the metallic part 16 takes place or is supported in a targeted manner.
  • the current carrying capacity of this embodiment is matched with the desired time / current characteristic and the fuse in the event of short-circuit currents.
  • the Figure 6a shows the normal state of the switching device and the fuse before the short circuit and the Figure 6b the state of the switch or the switching device in the event of a short circuit.
  • shape memory alloys or other shape-, geometry- or volume-changing materials can also be used to activate the switching device.
  • the fuse is activated in relation to the short circuit by means of a shape memory alloy or a bridge igniter or a reaction film, this can be done via a proportional current.
  • This electricity can be obtained from the connected network or from a separate energy store.
  • bridge detonators however, the necessary energy can also be provided galvanically separated by a transformer.

Claims (10)

  1. Fusible pour des applications basse-tension pour la protection de dispositifs de protection contre des surtensions aptes à être raccordés à un réseau d'alimentation, tels que des éclateurs ou des varistances, composé d'au moins un conducteur fusible (1) qui se trouve entre deux contacts (3) et qui est agencé dans un boîtier de fusible (6), et d'un contact de secours de court-circuit (3) à section de séparation interne vers le conducteur fusible,
    caractérisé en ce que
    un moyen de commutation (7) activable depuis l'extérieur est réalisé à l'intérieur du boîtier de fusible pour surmonter la section de séparation afin de déclencher un court-circuit à faible valeur ohmique ou à impédance, le moyen de commutation présentant un élément isolant (4) qui forme la section de séparation et qui fait l'objet d'un changement d'état par un activateur externe (5), et l'activateur étant en liaison avec au moins un raccord de commande (8), le fusible étant apte à être agencé dans la branche en dérivation en liaison avec le dispositif de protection contre des surtensions.
  2. Fusible selon la revendication 1,
    caractérisé en ce que
    l'élément isolant (4) est réalisé sous forme de feuille isolante.
  3. Fusible selon la revendication 1 ou 2,
    caractérisé en ce que
    l'activateur exotherme (5) est réalisé sous forme de feuille de réaction qui est en liaison avec un moyen d'amorçage (7).
  4. Fusible selon la revendication 1 ou 2,
    caractérisé en ce que
    l'activateur exotherme (5) présente une amorce à pont qui détruit directement ou indirectement l'élément isolant (4).
  5. Fusible selon la revendication 4,
    caractérisé en ce que
    l'amorce à pont entraîne un élément conducteur pour surmonter la section de séparation.
  6. Fusible selon la revendication 3,
    caractérisé en ce que
    le moyen d'amorçage (7) présente un élément d'amorçage (A ; B) qui chauffe lors d'un flux de courant, l'élément d'amorçage (A ; B) étant en liaison avec le raccord de commande (8).
  7. Fusible selon l'une des revendications précédentes,
    caractérisé en ce que
    plusieurs conducteurs fusibles (1) sont réalisés de manière parallèle les uns par rapport aux autres dans le boîtier de fusible (6), les plusieurs conducteurs fusibles (1) étant guidés par un disque (13) qui prend appui dans le boîtier de fusible (6), et le moyen de commutation étant agencé contre ou sur le disque (13).
  8. Fusible selon l'une des revendications précédentes,
    caractérisé en ce que
    le conducteur fusible ou les conducteurs fusibles (1) présente(nt) sur sa/leur extension longitudinale des tronçons à surface réduite et/ou à section transversale réduite, le moyen de commutation se trouvant dans un tronçon non réduit du côté surface et/ou du côté section transversale.
  9. Fusible selon l'une des revendications précédentes,
    caractérisé en ce que
    dans un boîtier (6) sensiblement cylindrique présentant des contacts (9) en forme de capuchon côté frontal, le contact de secours de court-circuit (3) est guidé par l'un des contacts (9) en forme de capuchon.
  10. Fusible selon la revendication 9,
    caractérisé en ce que
    ledit au moins un raccord de commande (8) est guidé par l'un des contacts (9) en forme de capuchon.
EP18702984.8A 2017-02-08 2018-02-01 Fusible conçu pour des applications basse tension Active EP3580772B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201830335T SI3580772T1 (sl) 2017-02-08 2018-02-01 Varovalka za nizkonapetostne napeljave

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017102397 2017-02-08
DE102017126419.1A DE102017126419A1 (de) 2017-02-08 2017-11-10 Schmelzsicherung für Niederspannungsanwendungen
PCT/EP2018/052457 WO2018145978A1 (fr) 2017-02-08 2018-02-01 Fusible conçu pour des applications basse tension

Publications (2)

Publication Number Publication Date
EP3580772A1 EP3580772A1 (fr) 2019-12-18
EP3580772B1 true EP3580772B1 (fr) 2021-04-21

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EP18702984.8A Active EP3580772B1 (fr) 2017-02-08 2018-02-01 Fusible conçu pour des applications basse tension

Country Status (6)

Country Link
EP (1) EP3580772B1 (fr)
JP (1) JP6884231B2 (fr)
CN (1) CN110383413B (fr)
DE (1) DE102017126419A1 (fr)
SI (1) SI3580772T1 (fr)
WO (1) WO2018145978A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019210234B3 (de) 2019-05-09 2020-10-15 Dehn Se + Co Kg Blitzschutz-Funkenstreckenanordnung und Verfahren zum Betreiben einer Blitzschutz-Funkenstreckenanordnung

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Publication number Priority date Publication date Assignee Title
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EP3580772A1 (fr) 2019-12-18
JP6884231B2 (ja) 2021-06-09
CN110383413B (zh) 2022-03-22
CN110383413A (zh) 2019-10-25
DE102017126419A1 (de) 2018-08-09
JP2020508557A (ja) 2020-03-19
SI3580772T1 (sl) 2022-07-29
WO2018145978A1 (fr) 2018-08-16

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