EP3844792B1 - Fusible avec fonction de mesure intégrée - Google Patents

Fusible avec fonction de mesure intégrée Download PDF

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Publication number
EP3844792B1
EP3844792B1 EP19829139.5A EP19829139A EP3844792B1 EP 3844792 B1 EP3844792 B1 EP 3844792B1 EP 19829139 A EP19829139 A EP 19829139A EP 3844792 B1 EP3844792 B1 EP 3844792B1
Authority
EP
European Patent Office
Prior art keywords
fuse
housing
reception space
pressure body
electronics assembly
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
EP19829139.5A
Other languages
German (de)
English (en)
Other versions
EP3844792A1 (fr
Inventor
Robert Hüttinger
Jean-Mary Martel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Filing date
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Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3844792A1 publication Critical patent/EP3844792A1/fr
Application granted granted Critical
Publication of EP3844792B1 publication Critical patent/EP3844792B1/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
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0266—Structural association with a measurement device, e.g. a shunt
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0275—Structural association with 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
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0291—Structural association with a current transformer

Definitions

  • the invention relates to a safety fuse in which a measuring function is integrated.
  • An example of such an overcurrent protection device is a fuse, for example, which interrupts the circuit by melting one or more fusible conductors if the current strength of the circuit protected by the fuse exceeds a specific value for a specific period of time.
  • the safety fuse consists of an insulating body which has two electrical connections which are electrically conductively connected to one another inside the insulating body by one or more fusible conductors.
  • the fusible conductor which has a reduced cross-section compared to the other conductors in the circuit, is heated by the current flowing through it and melts if the relevant nominal current of the fuse is significantly exceeded for a predetermined period of time. Because of its good insulating properties, ceramic is mostly used as the material for the insulating body.
  • a fuse link of this type is known, for example, from the European patent specification EP 0 917 723 B1 or the German Offenlegungsschriften DE 10 2014 205 871 A1 such as DE 10 2016 211 621 A1 known in principle.
  • Fuses are available in different types.
  • simple device fuses which have a simple glass cylinder in which the fuse element is accommodated
  • the ceramic body is filled with sand - mostly quartz sand:
  • the fuse element is surrounded by quartz sand.
  • the housing of the safety fuse is formed by a ceramic body in which the solidified sand, the electrical connections and the fusible conductor are accommodated or held.
  • the quartz sand acts as an arc extinguishing agent: if the rated current of the fuse is significantly exceeded - for example due to a high short-circuit current - this leads to the fuse responding, during which the fuse element first melts and then vaporizes due to the high temperature development. This creates an electrically conductive plasma, via which the current flow between the electrical connections is initially maintained - an arc is formed. As the metal vapor of the evaporated fusible conductor is deposited on the surface of the quartz sand grains, the arc is cooled down again. As a result, the resistance inside the fuse link increases to such an extent that the arc is finally extinguished. The electrical line to be protected by the fuse is thus interrupted.
  • NH fuses low-voltage high-performance fuses, so-called NH fuses, but also semiconductor protection fuses, so-called HLS fuses, such as those sold under the product name SITOR, are known in principle from the prior art.
  • NH fuses one or more fusible conductors in the form of metal strips are usually used. In doing so the fusible conductors usually have so-called bottleneck rows for selective switching off of the fuse.
  • at least one solder depot can be applied to one or more of the fusible conductors, with the help of which the overload characteristic of the fuse can be influenced.
  • the let-through energy value I 2 t which is decisive for the switch-off behavior of the fuse, is relatively high for NH fuses, which is why they tend to have a more sluggish characteristic.
  • the fusible conductor heats up to a temperature above the melting temperature of the solder due to an electrical overload current, this solder diffuses into the fusible conductor material and forms an alloy with it. This increases the electrical resistance of the fusible conductor, which leads to its further heating, whereby the diffusion process is further accelerated until the fusible conductor in the vicinity of the solder depot is completely dissolved, so that it tears off, interrupting the current flow. In the event of a brief, permissible overcurrent, the NH fuse does not switch off prematurely. On the other hand, if a short-circuit current occurs, the fusible conductor tears open at the rows of constrictions.
  • NH fuses are used, for example, to protect systems or control cabinets from fire, for example due to overheated connecting cables.
  • the international patent application WO 2017/078525 A1 describes a fuse in which a current sensor is integrated into the pressure body of the fuse. With the help of this current sensor, the current flow through the fuse that occurs during normal operation can be measured and transmitted to an interrogation unit arranged outside of the fuse. However, since comparatively high temperatures can also occur in a fuse, it is questionable how reliably a sensor integrated into the pressure body of the fuse will function over the lifetime of the fuse.
  • a safety fuse with an integrated measuring function which has a fuse housing with a fuse element arranged therein and a measuring device with a current transformer and an electronic assembly electrically conductively connected thereto.
  • the invention is therefore based on the object of providing a safety fuse which at least partially overcomes the problems mentioned above.
  • the fuse according to the invention with an integrated measuring function has a fuse housing, which in turn has a first receiving space delimited by a pressure body and a second receiving space spatially delimited from the first receiving space.
  • a fusible conductor is accommodated and held in the second accommodation space.
  • the measuring device has a current transformer and an electronic assembly that is electrically conductively connected to the current transformer. Seen in a longitudinal direction L, the height of the current transformer essentially corresponds to the height of the second receiving space, which is why the electronics assembly is arranged in a direction orthogonal to the longitudinal direction to the side of the current transformer.
  • the first and the second receiving space are arranged one behind the other in a longitudinal extension direction L of the safety fuse, ie in the axial direction.
  • the pressure hull serves to prevent the fuse from heating up or triggering absorb the pressure that occurs. Therefore, high demands are placed on the mechanical strength and stability of the protective housing.
  • only a protective housing is required to delimit the second accommodation space in order to accommodate and fix the measuring device and to protect it from external impairments such as moisture and/or dirt. Significantly lower requirements are therefore placed on the mechanical stability of this housing.
  • the current transformer arranged in the second receiving space serves on the one hand as a current sensor, which forwards the recorded current measurement values to the electronics assembly, where the measurement values are further processed.
  • the energy required for this is also generated with the help of the current transformer through electromagnetic induction from the primary current, i.e. the operating current of the safety fuse.
  • the current transformer thus also serves as an energy source for the electronics assembly. In order to provide sufficient energy for the electronics assembly even with low operating currents of the safety fuse and thus to ensure the reliability of the measuring device, the current transformer must be dimensioned comparatively large for this purpose.
  • the fuse must be kept compact so that it can also be used for retrofit applications as part of a retrofit or modernization of existing systems, in which a conventional fuse is replaced without a measuring device.
  • the fuse ideally has the dimensions of a standardized NH fuse
  • the second accommodation space in which the measuring device is accommodated and held is severely limited, particularly in the axial direction, ie in the direction of longitudinal extent.
  • the electronics assembly is arranged laterally, ie in the radial direction, next to the current transformer, more precisely: between the current transformer and an inner wall of the second receiving space.
  • the current transformer can be dimensioned in such a way that its height corresponds to the height of the second receiving space, ie the current transformer occupies the second receiving space in terms of height.
  • the volume of the current transformer can thus be optimized in such a way that the energy provided for the electronics assembly is as large as possible. In this way, it is possible to construct a fuse with an integrated measuring function that does not require an external power source to supply the measuring device with energy.
  • the electronics assembly has a printed circuit board.
  • the electronics assembly In order to meet the requirements of the most compact possible design of the measuring device while at the same time having the largest possible current transformer volume, it is necessary for the electronics assembly to also be designed as compact as possible. This is possible by means of a printed circuit board that is kept compact, for example by using integrated circuits.
  • the printed circuit board has at least two rigid sections which are electrically conductively connected to one another by a flexible area.
  • the printed circuit board In order to be able to arrange the printed circuit board as space-savingly as possible in the second accommodation space, i.e. in the area between the current transformer and the inner wall of the protective housing, it is advantageous to divide the printed circuit board into several rigid sections which are electrically connected to one another by flexible areas.
  • Both flexible conductors and so-called rigid-flex printed circuit boards, in which the flexible areas are made of printed circuit board material, are suitable for this purpose, with the rigid outer layers having been removed.
  • the electronics assembly has a transmission device in order to transmit a measurement signal detected by the measuring device to a receiving device arranged outside of the safety fuse.
  • the determined measurement data or further processed data based on this measurement data can be transmitted to an external unit, for example a data collection device or a control room.
  • an external unit for example a data collection device or a control room.
  • the measurement signal is transmitted wirelessly from the transmission device to the receiving device.
  • Wireless transmission of the data to the external receiving device significantly simplifies the installation work for the safety fuse.
  • Common transmission methods such as Bluetooth, RFID (both active and passive), ZigBee, etc. can be used for wireless transmission of the data—measured values or preprocessed data based on measured values—from the transmission device to the receiving device.
  • the energy required for the transmission is advantageously obtained again from the primary current with the aid of the current transformer by electromagnetic induction.
  • the total installation space required for the fuse corresponds to the installation space of a standardized NH fuse. Since the fuse according to the invention with an integrated measuring function corresponds to the size of a conventional NH fuse in terms of its size, it is also suitable for retrofit applications as part of a retrofitting or modernization of existing systems, in which a conventional fuse without a measuring device is replaced by a fuse with an integrated measuring function , in question.
  • the fuse body ie the fuse housing for a fuse with an integrated measuring function of the above described type, has a first section, which is designed as a pressure body, which delimits the first accommodation space for accommodating the fuse element, and a second section, which is designed as a protective body, which delimits the second accommodation space for accommodating the measuring device.
  • the first receiving space and the second receiving space are spatially separated from one another in the fuse housing.
  • the first section of the fuse housing is pressure-stable, i.e. designed to absorb the pressure that occurs when the fuse is triggered, and thus represents the actual pressure body of the fuse, while the second section merely represents a protective function for the measuring device, and its mechanical stability and strength are significantly lower requirements are made.
  • the different mechanical strength properties of the two sections can be achieved using a suitable manufacturing process, for example a 3D printing process.
  • the first and second section form a structural unit, i.e. the two sections do not have to be installed first when replacing or installing the safety fuse, but are already firmly connected to one another, which significantly simplifies the installation work.
  • the fuse housing is designed in one piece.
  • a one-piece design of the fuse housing is advantageous since this avoids subsequent assembly steps. The assembly costs can be further reduced as a result.
  • the fuse housing is made from a ceramic material or a thermally stable plastic. Ceramic materials are due to their high compressive strength to produce a Fuse housing particularly suitable. Thermostable plastics, provided they are sufficiently thermally stable, are characterized by their simplified processability combined with comparatively low production costs.
  • the fuse housing is designed in several parts, with the pressure body being firmly but detachably connected to the protective body. This results in the advantage that after the fuse has been triggered, the second receiving space, in which the measuring device is received, can be reused, if necessary. This is of particular interest when the material and manufacturing costs of the measuring device are comparatively high compared to the rest of the safety fuse.
  • the pressure body and the protective body are formed from different materials. In this way, both recording rooms can be adapted to the different requirements placed on them.
  • the pressure body and the protective body are surrounded by an additional cover.
  • the structural unity of the fuse housing is emphasized with the help of the additional cover, which can also consist of paper or a plastic cover, for example.
  • the additional cover can also consist of paper or a plastic cover, for example.
  • the overall installation space required for the fuse corresponds to the installation space of a standardized NH fuse.
  • the fuse housing can also be used for retrofit fuses, ie as a replacement for a conventional fuse without a measuring function.
  • FIG 1 shows schematically the basic structure of a standardized NH fuse, as is already known from the prior art.
  • the safety fuse 1 has two connection elements 3 which are made of an electrically conductive material, for example copper.
  • the connection elements 3 are designed as blade contacts—this is not essential to the invention, however.
  • the connection elements 3 are mechanically tightly and tightly connected to a protective housing 2 with the height H, which consists of a solid, non-conductive and heat-resistant material, for example ceramic, and serves as a pressure body for the safety fuse 1 .
  • the protective housing 2 generally has a tubular or hollow-cylindrical basic shape and is sealed to the outside in a pressure-tight manner, for example with the aid of two sealing caps 4 .
  • the connection elements 3 each extend through an opening formed in the closure caps 4 into the cavity of the protective housing 2. In this cavity At least one so-called fusible conductor 5 is arranged, which electrically conductively connects the two connection elements 3 to one another.
  • the remaining cavity is usually completely filled with an extinguishing agent 6, which is used to extinguish and cool the fuse 1 in the event of a trip and completely surrounds the fuse element 5.
  • Quartz sand for example, is used as the extinguishing agent 6 .
  • the in figure 1 illustrated one fusible conductor 5 it is also possible to arrange several fusible conductors 5 electrically connected in parallel to one another in the protective housing 2 and to contact them accordingly with the two contact elements 3.
  • the tripping characteristic—and thus the tripping behavior—of the fuse 1 can be influenced by the type, number, arrangement and design of the fusible conductors 3 .
  • the fusible conductor 5 generally consists of a highly conductive material such as copper or silver and has several rows of constrictions 7 and one or more solder depots 8—so-called solder points—over its length, ie in its longitudinal direction L.
  • the direction of longitudinal extent L is thus parallel to an imaginary connecting line of the two connection elements 3.
  • the tripping characteristic of the fuse 1 can also be influenced and adapted to the respective application via the rows of constrictions 7 and the plumb points 8. In the case of currents that are less than the nominal current of the fuse 1, only so much power loss is converted in the fusible conductor 5 that it can be quickly dissipated to the outside in the form of heat via the extinguishing sand 6, the protective housing 2 and the two connection elements 3.
  • the temperature of the fusible conductor 5 does not rise above its melting point. If a current flows that is in the overload range of fuse 1, the temperature inside fuse 1 continues to rise steadily until the melting point of fuse element 5 is exceeded and it melts through at one of the rows 7 of constrictions. In the case of high fault currents - such as those occur due to a short circuit - so much energy is converted in the fusible conductor 5 that it is heated up practically over its entire length and as a result melts at all narrow point rows 7 at the same time.
  • FIG. 2 shows a side view of the fuse 100; the Figures 3 and 4 show corresponding sectional views of the fuse 100 in plan and elevation.
  • the safety fuse 100 has a fuse housing 110 with a first section 111 and a second section 112 which are arranged one behind the other in a direction L of the longitudinal extension of the safety fuse 100 .
  • the first section 111 is used as a pressure body 113 for Recording a fusible conductor 105 formed.
  • the pressure body 113 serves to absorb the pressure that occurs when the fuse 100 is heated or triggered, which is why high demands are placed on the mechanical strength and stability of the pressure body 113 .
  • a first receiving space 115 is therefore formed within the pressure body 113, in which the fusible conductor 105 is received and held.
  • the first receiving space 115 is delimited outwards in the radial direction by the pressure body 113 and is closed in the axial direction, ie in the direction of the direction of longitudinal extension L, by a closure element 104 .
  • the size of the fuse housing 110 corresponds to that of a standardized NH fuse, as described above figure 1 described. Due to the identical dimensions, the fuse 100 according to the invention is ideally suited for retrofit applications, ie as a replacement for a conventional HN fuse.
  • the safety fuse 100 has two connection elements 103 designed as blade contacts, which are mechanically firmly and tightly connected to the fuse housing 110 .
  • the design of the two connection elements 103 is not essential to the invention.
  • the fusible conductor 105 is electrically conductively connected to the two connection elements 103.
  • the fuse according to the invention is a sand-solidified fuse, then the remaining volume of the first receiving space 115 is filled with sand, usually quartz sand, which completely surrounds the fuse element 105 and serves as an extinguishing agent for extinguishing and cooling the fuse element 105 when triggered .
  • the second section 112 is designed as a protective body 114, which serves to accommodate a measuring device 120 and outwardly delimits a second accommodation space 116 provided for this purpose. Since the protective body 114 is only used to accommodate the measuring device 120 to fix and In order to protect against external influences such as moisture and/or dirt, the mechanical stability of the protective body 114 is subject to significantly lower requirements than that of the pressure body 113.
  • the protective body 114 is firmly connected to the pressure body 113, with the first receiving space 115 and the second receiving space 116 are spatially separated from one another by a partition wall 117 .
  • the partition wall 117 can be an independent component; however, it is also possible to form the partition wall 117 as part of the pressure body 113 or the protective body 114 .
  • the second receiving space 116 is closed by a further closure element 104 .
  • the lower connection element 103 embodied as a blade contact is guided through the further closure element 104 through the second receiving space 116 into the first receiving space 115 and is electrically conductively connected there to the fusible conductor 105 .
  • the measuring device 120 has a current transformer 121 and an electronics assembly 122 .
  • a current transformer 121 of the measuring device 120 is arranged around the lower connection element 103 in the second receiving space 116 formed in the protective body 114 such that it completely fills the height of the second receiving space 116 .
  • the height h of the current transformer 121 essentially corresponds, i.e. within the dimensional tolerances that are usual during assembly, to the height of the second receiving space 116—also viewed in the direction of longitudinal extent L.
  • the volume of the current transformer 121 can be optimized, i.e. greatly increased, in order to ensure reliable measurement and transmission of the measurement data even with a low primary current.
  • connection elements 103 are not arranged exactly in the middle, but somewhat eccentrically in the pressure body 113 or in the protective body 114.
  • An electronic module 122 of the measuring device 120 which is advantageously designed as a printed circuit board, is arranged in a space-saving manner in this structural space that is forced to be free between the current transformer 121 and an inner wall of the protective housing 114.
  • the electronics assembly 122 can also have a transmission device in order to transmit the measurement data or the processed data to a receiving device (not shown) arranged outside of the safety fuse 100 .
  • FIG 5 a second exemplary embodiment of the fuse 100 according to the invention is shown schematically.
  • the basic structure of the fuse 100 and the fuse housing 110 corresponds to that in FIGS Figures 2 to 4 illustrated first embodiment.
  • the main difference from the first exemplary embodiment is that the electronics assembly 122 is designed as a rigid-flex circuit board.
  • the term "rigid-flex circuit board" (engl. "rigid flex PCB") is understood to mean a combination of rigid and flexible circuit board sections which are permanently connected to one another.
  • the electronics assembly 122 has a central first rigid section 123 which is connected to a further rigid section 125 in each case via a flexible section 124 in each case.
  • the electronics assembly 122 can be designed 3-dimensionally and thus optimally adapted to the limited spatial conditions within the protective body 114 . Furthermore, this solution offers the advantage that no plug connections or line components are required to connect the individual rigid printed circuit board sections 123, 125 must be assembled, which reduces both the space requirement and the assembly effort.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuses (AREA)
  • Semiconductor Integrated Circuits (AREA)

Claims (11)

  1. Fusible (100) avec fonction de mesure intégrée,
    - avec un boîtier de sécurité (110),
    - avec un conducteur fusible (105),
    - avec un dispositif de mesure (120), lequel comprend un transformateur de courant (121) ainsi qu'un module électronique (122) relié de manière électriquement conductrice au transformateur de courant (121),
    caractérisé en ce que
    - le boîtier de sécurité comprend un premier espace de réception (115) délimité par un corps de pression (113) ainsi qu'un deuxième espace de réception (116) délimité spatialement du premier espace de réception (115),
    - le conducteur fusible (105) est reçu et maintenu dans le premier espace de réception (115),
    - le dispositif de mesure (120) est reçu et maintenu dans le deuxième espace de réception (116),
    - la hauteur (h) du transformateur de courant (121) dans une direction d'étendue longitudinale (L) du conducteur fusible (105) correspond essentiellement à la hauteur du deuxième espace de réception (116), et
    - le module électronique (122) est disposé sur le côté du transformateur de courant (121) dans une direction orthogonale à la direction d'étendue longitudinale (L) du conducteur fusible (105).
  2. Fusible (100) selon la revendication 1,
    dans lequel le module électronique comprend une carte de circuit imprimé (122).
  3. Fusible (100) selon la revendication 2,
    dans lequel la carte de circuit imprimé (122) comprend au moins deux sections rigides (123, 125), lesquelles sont reliées l'une à l'autre de manière électriquement conductrice par l'intermédiaire d'une zone souple (124).
  4. Fusible (100) selon l'une des revendications précédentes, dans lequel le module électronique (122) comprend un dispositif de transmission afin de transmettre un signal de mesure détecté par le dispositif de mesure (120) à un dispositif de réception disposé à l'extérieur du fusible (100).
  5. Fusible (100) selon la revendication 4,
    dans lequel la transmission du signal de mesure s'effectue sans fil par le dispositif de transmission au dispositif de réception.
  6. Fusible (100) selon l'une des revendications précédentes, dans lequel le boîtier de sécurité (110)
    - comprend une première section (111) qui est conçue en tant que corps de pression (113), lequel délimite le premier espace de réception (115) pour la réception du conducteur fusible (105), ainsi que
    - comprend une deuxième section (112) qui est conçue en tant que corps de protection (114), lequel délimite le deuxième espace de réception (116) pour la réception du dispositif de mesure (120),
    - dans lequel le premier espace de réception (115) et le deuxième espace de réception (116) sont disposés de manière spatialement délimitée l'un de l'autre dans le boîtier de sécurité (110).
  7. Fusible (100) selon la revendication 6,
    dans lequel le boîtier de sécurité (110) est conçu d'une seule pièce.
  8. Fusible (100) selon la revendication 7,
    dans lequel le boîtier de sécurité (110) est formé à partir d'un matériau en céramique ou d'une matière plastique thermostable.
  9. Fusible (100) selon la revendication 6,
    dans lequel le boîtier de sécurité (110) est conçu en plusieurs parties, dans lequel le corps de pression (113) est relié de manière fixe mais amovible au corps de protection (114).
  10. Fusible (100) selon la revendication 9,
    dans lequel le corps de pression (113) et le corps de protection (114) sont formés à partir de matériaux différents.
  11. Fusible (100) selon l'une des revendications 6 à 10,
    dans lequel le corps de pression (113) et le corps de protection (114) sont entourés par une enveloppe supplémentaire.
EP19829139.5A 2018-12-20 2019-12-18 Fusible avec fonction de mesure intégrée Active EP3844792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018222552 2018-12-20
PCT/EP2019/085958 WO2020127488A1 (fr) 2018-12-20 2019-12-18 Fusible à fonction de mesure intégrée et corps de fusible

Publications (2)

Publication Number Publication Date
EP3844792A1 EP3844792A1 (fr) 2021-07-07
EP3844792B1 true EP3844792B1 (fr) 2023-01-25

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Application Number Title Priority Date Filing Date
EP19829139.5A Active EP3844792B1 (fr) 2018-12-20 2019-12-18 Fusible avec fonction de mesure intégrée

Country Status (5)

Country Link
US (1) US20220093356A1 (fr)
EP (1) EP3844792B1 (fr)
CN (1) CN113196439A (fr)
ES (1) ES2937138T3 (fr)
WO (1) WO2020127488A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020148015A1 (fr) 2019-01-16 2020-07-23 Siemens Aktiengesellschaft Corps de sécurité et fusible
DE102022211027A1 (de) 2022-10-18 2024-04-18 Siemens Aktiengesellschaft Alterungsüberprüfung für Niederspannungskomponenten

Citations (1)

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Publication number Priority date Publication date Assignee Title
WO2000019475A1 (fr) * 1998-09-24 2000-04-06 Ascom Powerline Communications Ag Fusible pour courant de haute intensite et reseau de distribution de courant

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US20220093356A1 (en) 2022-03-24
EP3844792A1 (fr) 2021-07-07
WO2020127488A1 (fr) 2020-06-25
ES2937138T3 (es) 2023-03-24

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