EP3082147B1 - Procede de fabrication d'un tube de securite et d'un fusible haute tension - Google Patents

Procede de fabrication d'un tube de securite et d'un fusible haute tension Download PDF

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Publication number
EP3082147B1
EP3082147B1 EP16000705.0A EP16000705A EP3082147B1 EP 3082147 B1 EP3082147 B1 EP 3082147B1 EP 16000705 A EP16000705 A EP 16000705A EP 3082147 B1 EP3082147 B1 EP 3082147B1
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EP
European Patent Office
Prior art keywords
reinforcement
fuse
insulating body
tube
fuse tube
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.)
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Application number
EP16000705.0A
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German (de)
English (en)
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EP3082147A1 (fr
Inventor
Dirk Wilhelm
Ulrich Haas
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.)
Siba Fuses GmbH
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Siba Fuses GmbH
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Filing date
Publication date
Application filed by Siba Fuses GmbH filed Critical Siba Fuses GmbH
Priority to SI201630322T priority Critical patent/SI3082147T1/sl
Priority to PL16000705T priority patent/PL3082147T3/pl
Publication of EP3082147A1 publication Critical patent/EP3082147A1/fr
Application granted granted Critical
Publication of EP3082147B1 publication Critical patent/EP3082147B1/fr
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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
    • H01H85/38—Means for extinguishing or suppressing arc
    • 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
    • H01H85/165—Casings
    • H01H85/175—Casings characterised by the casing shape or form
    • H01H85/1755—Casings characterised by the casing shape or form composite casing
    • 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
    • H01H85/38—Means for extinguishing or suppressing arc
    • H01H2085/383—Means for extinguishing or suppressing arc with insulating stationary parts

Definitions

  • the present invention relates to a method for producing a fuse tube for a high-voltage fuse according to the preamble of patent claim 1, which is intended in particular for use in the voltage range from 3.6 kV and / or rated currents above 80 A, and a method for producing such a high-voltage fuse , Furthermore, the invention relates to a securing tube for a high-voltage fuse according to the preamble of patent claim 7, which is intended in particular for use in the voltage range from 3.6 kV and / or rated currents above 80 A, and a high-voltage fuse of the aforementioned type as such.
  • fuses are generally used. These are connected in series with the circuits to be protected and consist essentially of a particular sand-filled insulating body with end-to-end contacts, which are connected by one or more internal fusible link. When a defined current above the rated current is exceeded, the fusible conductor is heated so much that it melts and the circuit is interrupted in this way.
  • Fuses of the aforementioned type exist for a wide variety of power ranges.
  • the present invention is particularly concerned with high voltage, high performance fuses, referred to briefly as HH fuses or generally high voltage fuses.
  • the invention relates to high-voltage fuses, which are intended for use in the voltage range from 3.6 kV and / or rated currents above 80 A.
  • high-voltage fuses of the aforementioned type for example, in the voltage range of 24 kV from 200 A or in the voltage range greater than 24 kV from 80 A can be used.
  • High-voltage fuses are generally larger in size than generally designed similarly low-voltage fuses.
  • high-voltage fuses are filled with an insulating material, for example quartz sand, which absorbs metal vapor immediately after the interruption of the fusible conductor (s) and develops through the arc into an insulating sintered body.
  • fuse tubes for fuses and in particular for high-voltage fuses consist primarily of ceramic or plastic. Both materials have specific advantages and disadvantages that determine the proper shutdown of the fuse.
  • partial arcing occurs along the entire length of the fuse conductor. If the securing tube is made of a plastic, the partial arcs can release carbon from the tube wall at high currents. Then, a total arc can develop axially along the pipe inner wall and the fuse fails.
  • the present invention relates to a securing tube with an inner tube of an inorganic, in particular ceramic material or glass material.
  • an inorganic, in particular ceramic material or glass material behaves electrically neutral in the case of an arc contact.
  • the resulting problem is that the inorganic material usually has an inflexible and brittle structure. Expansion of the filling material due to a change in the material due to crystalline processes as a result of the high temperatures when an arc occurs can therefore lead to destruction of the fuse due to rupture of the insulating body. A satisfactory interruption of the fault current is then no longer possible.
  • a high-voltage fuse is known in which a ceramic inner tube is provided, on the outside of a ceramic outer tube is applied.
  • the inner ceramic tube has a good heat conduction but a poor thermal shock resistance.
  • the outer tube compensates for this with good thermal shock resistance. Since the two tubes are made of different materials, they are made in separate steps and then brought together. Because of the brittle behavior of the ceramic material of both the inner and outer tubes, short-circuit shutdowns result in the case of large currents, both tubes burst and the arc released can cause considerable damage.
  • a high-voltage fuse which has at least one fusible conductor which is arranged in an annular gap between an inner insulating body and an outer sheath.
  • the annular gap is filled with a dielectric fluid. When an arc occurs, it is conducted along the annular gap and cooled or extinguished due to the liquid.
  • the object of the present invention is to avoid the disadvantages of the prior art and in particular to provide a securing tube and a high-voltage fuse, wherein a safe extinguishing of an arc is ensured even at high currents.
  • damage during release of the fuse is to be prevented by fragments released and a simple and / or cost-effective design possible.
  • the aforementioned object is achieved according to the invention initially essentially by a method for producing a fuse tube for a high-voltage fuse, in particular for use in the voltage range from 3.6 kV and / or rated currents above 80 A, wherein the outer reinforcement is applied to the outside of the insulation body, wherein the reinforcement is adapted to absorb, without breaking, larger radially outwardly acting forces than the internal insulating body.
  • the insulating body and the outer reinforcement are inextricably linked.
  • a securing tube is obtained in the form of a reinforced insulating tube, which already has both the necessary insulating properties and a high stability against mechanical deformation or forces occurring in view of a later use in a high-voltage fuse.
  • the inner insulating tube has very good insulating properties and serves in particular as an electrically neutral insulating section in the case of an arc contact. Occur in the case of high rated currents short circuits that lead to a breakage of the inner body at the shutdown, but a falling apart of the broken insulating tube and thus a release of the arc by the outer plastic reinforcement, which is permanently connected to the inner insulating, prevented. It is important that the outer reinforcement is designed such that it can absorb larger radially outwardly acting forces, as the inner insulating without breaking. Ultimately, the outer plastic reinforcement acts as a reinforcement of the inner tube, but without coming into contact with the arc.
  • the safety tube according to the invention has in a preferred embodiment, a particularly high stability to mechanical deformation, in particular when the reinforcement is applied to the outside of the insulating body over its entire length and in particular firmly connected to the outside of the insulating body.
  • the plastic material which is applied to the insulating body as a reinforcement is a fiber-reinforced material.
  • suitable here are glass fiber and / or aramid fiber reinforced plastic materials.
  • the gain can absorb as applied to the insulator outer tube substantially higher radial forces or internal pressures, as the insulator, without a rupture of the reinforcement is to be feared.
  • reinforcements having a fiber-reinforced plastic material so that the outer jacket at occurring radially acting forces or internal pressures, which lead to a breaking / bursting of the insulator, not yet Burst the outer reinforcement, so that the reinforcement holds the "fragmented" inner tube of the insulator together.
  • the application of the reinforcement on the insulating body to produce a solid composite is preferably carried out by means of a solid wrapping with appropriate adhesion, in particular in the filament winding method.
  • This method is a common method, in particular to apply fibrous materials, such as glass fibers and / or aramid fibers, on cylindrical components.
  • the fiber material is preferably wound in a cross-wise around the component like a coil.
  • the reinforcement of the insulating body according to the invention can be effected by the application of a prepreg semifinished product, which is a fabric of preimpregnated fibers.
  • a flexible mat made of fiber-reinforced, in particular glass fiber reinforced plastic (GRP) is used, which is characterized by a particularly good mechanical stability. It is also possible, moreover, to apply the reinforcement by encapsulation of the insulating on this.
  • GRP glass fiber reinforced plastic
  • an inner cap is used for contacting one or more fusible elements, which is / are introduced in a later step, in particular on an insert in the securing tube or for contacting other, outer components, such as the contact cap, in the subsequent re-use for producing a high-voltage fuse as such.
  • the securing tube By an end-side mechanical processing of the securing tube after the application of the reinforcement, this can be brought into a form from which it can be used without further ado for the production of a high-voltage fuse.
  • at least in one end region of the securing tube its outer diameter is reduced, in particular, by removing machining, in order to be able to later slide on the inner cap and / or the outer contact cap at the end.
  • the processing of the securing tube preferably takes place on the outside of the reinforcement, since the reinforcement can be machined much more easily than the inner insulating tube.
  • the application of the inner cap and / or contact cap can be further facilitated by an end chamfering of the securing tube.
  • the introduction of a preferably circumferential groove in the end region of the securing tube allows in a first preferred embodiment later a positive engagement the inner cap, in particular with its outer peripheral edge, in the groove to form a particularly strong connection.
  • the insulating body itself that is to say before the application of the reinforcement, can be machined if the material of the insulating body permits this. Ideally, then adjusts the subsequently applied reinforcement of the shape of the insulator, so that the shaping is maintained by the processing even with the securing tube.
  • a high-voltage fuse in particular for use in the voltage range from 3.6 kV and / or rated currents above 80 A, wherein the high-voltage fuse a tubular, made of an inorganic material, in particular ceramic material or glass material, inner insulating body, a On the insulating body applied external reinforcement of a plastic material and the end has an applied contact cap and wherein the contact cap is applied only after the application of the gain on the insulator, ultimately, a high-voltage fuse can be provided in a simple and cost-effective manner.
  • a fuse conductor or the melt conductor having fusible conductor system according to the desired specification of the high-voltage fuse can be inserted into the fuse tube and, preferably, the fusible conductor electrically conductively connected to the inner cap.
  • the cavity of the insulating body preferably after the insertion of the fusible conductor, is filled with an electrically nonconducting material, wherein in particular a quartz-containing material is advantageous.
  • a quartz-containing material is advantageous.
  • Such a material removes a large amount of thermal energy from a burning arc, so that the arc is rapidly extinguished.
  • a conversion of the crystalline structure of the quartz-containing material, as a result of which an electrically insulating sintered body is formed, which prevents a re-occurrence of an arc takes place.
  • the present invention is in addition to the manufacturing method described above, a securing tube for at least one contact cap having high voltage fuse of the aforementioned type, with a tubular inner insulating body made of an inorganic material, in particular a ceramic material or a glass material, and an applied on the insulator outer reinforcement made of a plastic material.
  • the reinforcement extends over such a length of the insulating body, that the contact cap in the applied state, the reinforcement on the outside overlaps at least partially.
  • a securing tube of the aforementioned type is characterized by a high mechanical stability and at the same time has a high dielectric strength required for an insulating tube of a high-voltage fuse.
  • the outer plastic reinforcement ensures that even with a breakage of the inner tube whose fragments are held together, since the outer plastic reinforcement due to their more flexible structure can absorb much higher radially acting forces or internal pressures than the inner tube without bursting.
  • the resistance of the fuse tube is particularly high when the gain is formed as over the entire length of the insulating body extending outer sheath.
  • the tubular insulating body which ultimately represents the inner tube consists, as stated previously, of an inorganic material, in particular a ceramic material or a glass material. Such an inorganic material has a relatively high thermal resistance and releases no conductive components when contacted with an arc.
  • the insulating body in this context preferably has a single-layered construction.
  • the insulating body according to a first preferred embodiment, a wall thickness between 3 mm and 10 mm, preferably between 4.5 mm and 8.5 mm and more preferably between 6 mm and 7 mm.
  • the outer reinforcement which is ultimately the outer tube
  • a fiber-reinforced plastic material is used.
  • a material for the reinforcement of the insulating body is particularly suitable a glass fiber reinforced plastic (GRP).
  • GRP glass fiber reinforced plastic
  • An existing from GRP or at least GRP having reinforcement is characterized by an extremely high mechanical stability and is also highly temperature stable. In the same way, this also applies to a plastic that is reinforced by aramid fibers.
  • GRP glass fiber reinforced plastic
  • matrix material or binder of the fiber-reinforced Plastic is preferably used polyester or epoxy resin.
  • An alternative to fiber-reinforced plastic would be a thermoplastic material with high operating temperature, which can be processed, for example by spraying, or a thermoset.
  • the reinforcement comprises or consists of a thermoplastic and / or a duroplastic.
  • the reinforcement is preferably formed as a closed layer.
  • a coarse-meshed fabric a network structure or similar, non-closed configurations of the reinforcement layer.
  • each end of an end region is provided with a reduced outer diameter.
  • the reinforcement is reduced in its layer thickness. Due to the reduced outer diameter, in a first preferred embodiment of the invention, a contact cap can be pushed onto the securing tube with an applied inner cap in such a way that a total of at least substantially flush course of the outer edge results along the securing. In a second preferred embodiment, a contact cap without inner cap is pushed onto the securing tube.
  • end portions of the securing tube are preferably formed in a symmetrical manner, it is also possible for certain application situations that the end regions can be designed differently.
  • the central region of the reinforcement between the end regions of the securing tube has an at least substantially constant layer thickness.
  • the risk of bursting in the central area is greatest, so that the greatest possible and uniform stabilization of this area is advantageous.
  • the layer thickness of the reinforcement in the central region may be between 2 mm and 8 mm, preferably between 3 mm and 6 mm and more preferably between 3.5 mm and 4.5 mm.
  • the reinforcement preferably has a layer thickness between 0.5 mm and 4 mm, preferably between 1 mm and 3 mm and more preferably between 1.5 mm and 2.5 mm.
  • a tight fit of a later applied inner cap and / or contact cap can be achieved by the possibility of a positive connection.
  • the inner cap engages in particular with its outer peripheral edge at least partially in the groove form-fitting manner. Additionally or alternatively, however, the inner cap can also be friction and / or materially connected to the end region.
  • the contact cap is preferably rolled directly into the groove. It is understood that in principle there are other ways to realize the positive connection between the contact cap and the fuse tube, for example by a magnet forming.
  • a chamfering of the reinforcement at the outside end of the end region makes it possible to easily set up the inner cap and / or the contact cap during assembly.
  • the groove and the chamfer represent exceptions in the end region at least substantially constant layer thickness of the reinforcement.
  • the length of the end region may be between 30 mm and 60 mm, preferably between 40 mm and 50 mm and more preferably between 42 mm and 48 mm and in particular is independent of the total length of the securing tube, which can be between 180 mm and 600 mm.
  • the mentioned inner cap is used in a first preferred embodiment for producing an electrical contact between the inserted fusible conductor or a fusible conductor system and an outer contact cap when the fuse tube is ultimately mounted to a complete high-voltage fuse.
  • the inner cap is preferably made of an electrically conductive material.
  • copper or copper alloys for example, brass with different copper-zinc ratios, characterized in this regard by particularly advantageous properties.
  • the fusible conductor or the fusible conductor system is electrically conductively connected directly to a pushed-on contact cap.
  • a fuse tube of the aforementioned type and having the properties described above can be used as a component for a high-voltage fuse, which in turn is also the subject of the present invention.
  • a high-voltage fuse of the aforementioned type generally has, in addition to a fuse tube according to the invention, an internal fusible conductor, or a fusible conductor system, in which the fusible conductor is carried by a wound body.
  • the fusible conductor or the fusible conductor system is preferably surrounded in a high-voltage fuse according to the invention with an arc extinguishing agent, which at least substantially fills the cavity of the fuse tube.
  • the arc extinguishing agent is in particular a quartz-containing material.
  • the high-voltage fuse according to the invention has at each end a contact cap which serves for external contacting of the high-voltage fuse and which is connected on the inside via the inner cap in an electrically conductive manner to the fusible conductor.
  • the contact cap at least partially overlaps the reinforcement on the outside, since it is placed in the final process step.
  • the contact cap preferably engages over the end region of the securing tube processed in such a way that the result is an at least substantially flush course of the outer contour of the high-voltage fuse according to the invention.
  • the inner cap which serves according to a first preferred embodiment of the production of the electrical contact between the contact cap and the inner fusible conductor, is also overlapped by the contact cap. There is thus a secure, electrically conductive, frictional connection between the contact cap and the inner cap.
  • FIG. 1 shown sectional view of a fuse tube 1 according to the invention for a in Fig. 2 illustrated in the same way high-voltage fuse 2 illustrates the principle two-layer structure of the fuse tube 1 from a tubular inner insulator 3 and an applied on the insulator 3 outer reinforcement 4.
  • high-voltage fuse 2 illustrates the principle two-layer structure of the fuse tube 1 from a tubular inner insulator 3 and an applied on the insulator 3 outer reinforcement 4.
  • end condition of the fuse tube 1 is in Fig. 1 dispensed with the representation of an end cap applied inner cap 5.
  • the insulating body 3 has a tubular, that is substantially cylindrical, shape with a presently single-layered construction. With regard to a high arc resistance of the insulating body 3 consists of an inorganic material, in particular a ceramic or a glass material in question.
  • the insulating body 3 With a wall thickness of 6.5 mm in the present case gives the insulating body 3 the securing tube 1 sufficient for use as a high-voltage fuse 2 structural stability and rigidity.
  • a reinforcement 4 is externally applied to the insulating body 3 circumferentially.
  • the reinforcement 4 is a GRP reinforcement, which was applied as a filament winding in a cross-layer.
  • Glass fiber reinforced plastic (GRP) based on polyester and / or epoxy resin has a high mechanical stability to the insulating body 3 from bursting due to radially outward forces in his Protect inside.
  • GRP has a high temperature stability.
  • the gain 4 is at the in Fig. 1 shown embodiment applied to the insulating body 3 in one layer.
  • end regions 6 of the securing tube 1 can be defined in this case, in which the securing tube 1 has a reduced outside diameter.
  • the layer thickness of the reinforcement 4 in the end region 6 is at least substantially 2 mm.
  • a central region 7 is provided, in which the reinforcement has an at least substantially constant layer thickness, which in the present case is 4 mm.
  • the reinforcement 4 has at least essentially a constant layer thickness, which, however, is lower than in the central region 7 due to mechanical processing. Exceptions to the aforementioned layer thickness are, for example, a groove 8 also introduced by mechanical processing and a chamfer 9 represents.
  • the groove 8 is formed as a circumferential groove with a circular arc-shaped profile.
  • possible embodiments of the groove 8 include other profiles, such as a rectangular or a triangular profile.
  • more than one groove 8 may be provided or the groove 8 may not be circumferential, but for example segmented or spirally formed.
  • the chamfer 9 of the reinforcement 4 is provided at the outer end of the end portion 6 and is used to facilitate pushing on a Fig. 4 Through the chamfer 9, the layer thickness of the reinforcement 4 at the end of the end region 6 in the present case over a length of 3 mm is reduced by 1 mm.
  • a reduction in the layer thickness of the reinforcement 4 also follows the transition 10 from the central region 7 to the end region 6, wherein the reinforcement 4 in the region of the transition 10 in the present case has a circular arc-shaped course.
  • the length of the end portion 6 of the securing tube 1 is in the embodiment shown here between 30 mm and 60 mm. It is preferably between 40 mm and 50 mm and more preferably between 42 mm and 48 mm.
  • the length of the end region 6 is in particular independent of the length of the securing tube 1, which is usually between 180 mm and 600 mm, depending on the final embodiment of the HH fuse.
  • the outer diameter of the securing tube 1 in the central region 7 is about 75 mm. With the aforementioned layer thickness of the reinforcement 4 and the wall thickness of the insulating body 3, this results in an inner diameter of about 54 mm.
  • the outer diameter is thus dimensioned so that it corresponds to the usual standard dimensions, which is particularly advantageous for installation in standardized switchgear.
  • the embodiment of the fuse tube 1 according to the invention shown here has a high dimensional stability and low manufacturing tolerances. Its ovality is max. 1.0, its deflection 0.5%, and the non-tolerated dimensions result according to DIN 40680 medium.
  • a high-voltage fuse 2 as shown in the Figures 2 and 6 produce.
  • an inner cap 5 on the reinforcement ie pressed onto the reinforcement 4 and rolled in the groove 8, which is a positive connection of the inner cap 5 with the end portion 6 of the securing tube 1 by engagement of the inner cap 5 with its outer peripheral edge 11 into the groove 8 results.
  • the inner cap 5 is rolled inwards in such a way that it forms the wall of the securing tube 1, ie of the insulating body 3 with the applied reinforcement 4, the end engages around.
  • the inner cap 5 is frictionally held on the end portion 6 of the securing tube 1.
  • a cohesive connection for example by gluing, is also possible.
  • the securing tube 1 receives the in Fig. 4 illustrated form.
  • the pure safety tubes 1, on the other hand are preferred Fig. 3 or. Fig. 9 and 17 stored.
  • a fusible conductor system 12 is first introduced into the cavity 13 of the fuse tube 1.
  • the fusible conductor system 12 has a carrier 14 which serves as a winding body for one or more fusible links 15.
  • fusible conductors 15 or fusible conductor systems 12 designed for different rated currents can be used, while in each case an identical fuse tube 1 from a stock is used.
  • a contact strip 16 by means of resistance welding to the inner cap 5, which in this case consists of copper or a copper alloy, electrically conductively connected.
  • the cavity 13 of the fuse tube 1 after one side of the fuse tube 1 has been closed, in particular filled with a quartz-containing, granular arc extinguishing agent, the fusible conductor 15 and the fusible conductor system 12 surrounds.
  • a metallic contact cap 17 is placed on the still open end portion 6 of the fuse tube 1, whereby a complete, inventive high-voltage fuse 2 as shown in FIG Fig. 6 is obtained.
  • the contact cap 17 is pressed onto the inner cap 5 in such a way that in particular a conductive frictional engagement results.
  • a tighter fit of the contact cap 17 may also be provided a positive and / or cohesive connection.
  • the contact cap 17 Since the contact cap 17 is placed in the final process step for producing the high-voltage fuse 2 on the end portion 6 of the fuse tube 1, wherein the fuse tube 1 already has a force applied to the insulating body 3 reinforcement 4, the contact cap 17 engages over the outside of the reinforcement 4 at least partially. A subsequent wrapping with a reinforcing material is omitted in a high-voltage fuse 2 in the context of the present invention.
  • the contact cap 17 engages over the inner cap 5, but otherwise engages only the end portion 6 of the securing tube 1, wherein due to the reduced outer diameter of the securing tube 1 in its end region 6 results in an at least substantially flush course along the outer edge in the high-voltage fuse 2 according to the invention.
  • Fig. 7 shows a second embodiment of a high-voltage fuse according to the invention. This is basically similar in construction to the first embodiment, which is based on the Fig. 1 to 6 is described.
  • a reinforcement 4 is applied to an insulating body 3, and there is a mechanical processing of the fuse tube 1 in the end region 6 instead.
  • no inner cap 5 is provided.
  • the contact cap 17 is rolled directly into the groove 8.
  • the contact cap 17 is also shaped differently, namely at least substantially tubular and open end.
  • Fig. 7 an inventive, one-sided closed fuse tube 1 is shown with inserted fusible conductor system 12 and applied contact caps 17, wherein the filled into the cavity 13 quartz sand is not shown for purposes of illustration. Accordingly, in the axial view according to Fig. 8 of the fuse tube 1 off Fig. 7 to recognize the introduced into the cavity 13 of the fuse tube 1 fuse conductor system 12.
  • a tubular insulating body 3 of an inorganic material is wrapped with an outer reinforcement 4.
  • the securing tube 1 is machined in its end regions 6 in such a way that the outer diameter is reduced and a groove 8 and a chamfer 9 are introduced ( Fig. 9, 10th . 17 ).
  • each end of a contact cap 17 is applied directly and in turn rolled into the groove 8, so that there is a frictional and positive connection of the contact cap 17 to the securing tube 1 ( Fig. 11, 12th . 18 ).
  • a fusible conductor system 12 is introduced with a carrier 14 and one or more fusible conductors 15 in the cavity 13 of the fuse tube 1 with applied contact caps 17.
  • a contact strip 16 By means of a contact strip 16, an electrically conductive connection of the fusible conductor 15 to the contact cap 17, which serves for the external contacting of the high-voltage fuse 2 according to the invention, is produced.
  • the contact strip 16 is in particular in the Fig. 14 and 19 recognizable.
  • the high-voltage fuse 2 is finally closed at the end, i. at the contact caps 17, closed by a lid 18.
  • the cover 18 may be frictionally, positively and / or materially connected to the contact cap 17.
  • the securing tube 1 be stored without applied inner caps 5 and / or contact caps 17.
  • a securing tube 1 is obtained, which can be stored in stock without significant aging phenomena.
  • the For contacting serving inner caps 5 and / or contact caps 17 are preferably applied only shortly before the production of a high-voltage fuse 2 using the fuse tube 1, for example, to avoid the formation of electrically insulating oxide layers on the surface of the caps.

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  • Composite Materials (AREA)
  • Fuses (AREA)

Claims (15)

  1. Procédé de fabrication d'un tube de fusible (1) pour un fusible haute tension (2), destiné en particulier à être utilisé dans la gamme de tension à partir de 3,6 kV et/ou à des courants nominaux dépassant 80 A, selon lequel le tube de fusible (1) présente un corps isolant interne (3) tubulaire fabriqué à partir d'un matériau inorganique, en particulier à partir d'un matériau céramique ou de verre ainsi qu'un renfort externe (4) en matière plastique particulièrement flexible et stable,
    caractérisé en ce que
    le renfort externe (4) est appliqué à l'extérieur sur le corps isolant (3), selon lequel le renfort est conçu pour absorber, sans se casser, des forces agissant radialement vers l'extérieur plus grandes que pour le corps isolant interne (3).
  2. Procédé selon la revendication 1, caractérisé en ce qu'une matière plastique renforcée de fibres, en particulier renforcée de fibres de verre et/ou de fibres d'aramide, est appliquée en particulier sur une base polyester et/ou résine époxyde, en tant que renfort (4) sur le corps isolant (3), en particulier selon laquelle lors de l'application dans le procédé d'enroulement filamentaire, par injection et/ou par application d'un produit fini préimprégné, en particulier sous la forme d'un tapis.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le renfort (4) est appliqué sur l'extérieur du corps isolant (3) sur toute sa longueur, et/ou en ce que le corps isolant (3), en particulier avant l'application du renfort (4), et/ou le tube de fusible (1), en particulier après l'application du renfort (4), sont usinés mécaniquement aux extrémités afin de réduire le diamètre externe et/ou pour lisser la surface et/ou pour introduire une rainure (8) de préférence circonférentielle et/ou pour réaliser un chanfrein (9).
  4. Procédé de fabrication d'un fusible haute tension (2), destiné en particulier à être utilisé dans la gamme de tension à partir de 3,6 kV et/ou à des courants nominaux dépassant 80 A, un procédé selon l'une quelconque des revendications 1 à 3 étant réalisé, selon lequel le fusible haute tension (2) présente aux extrémités au moins un capuchon de contact appliqué (17), le capuchon de contact (17) n'étant appliqué qu'après avoir appliqué le renfort (4) sur le corps isolant (3) et, à l'état assemblé, débordant au moins partiellement sur le renfort (4).
  5. Procédé selon la revendication 4, selon lequel dans le tube de fusible (1) un système d'élément fusible (12) présentant un élément fusible (15) est engagé.
  6. Procédé selon la revendication 4 ou 5, dans lequel le tube de fusible (1) est stocké avant la fabrication du fusible haute tension (2).
  7. Tube de fusible (1) pour un fusible haute tension (2), en particulier destiné à être utilisé dans la gamme de tension à partir de 3,6 kV et/ou à des courants nominaux dépassant 80 A, avec un corps isolant interne (3) tubulaire fabriqué à partir d'un matériau inorganique, en particulier un matériau céramique ou du verre et avec un renfort externe (4) en matière plastique,
    caractérisé en ce que
    le renfort externe (4) est appliqué à l'extérieur sur le corps isolant (3), selon lequel le renfort externe (4) est conçu pour absorber, sans se casser, des forces agissant radialement vers l'extérieur plus grandes que pour le corps isolant (3).
  8. Tube de fusible selon la revendication 7, caractérisé en ce que la matière plastique du renfort (4) est renforcée de fibres, en particulier renforcée de fibres de verre et/ou de fibres d'aramide, en particulier du polyester et/ou de la résine époxyde étant prévus comme liants et/ou en ce que la matière plastique du renfort présente une résine thermoplastique et/ou une résine thermodurcissable ou bien est composée de l'un d'eux.
  9. Tube de fusible selon la revendication 7 ou 8, caractérisé en ce que le renfort (4) est conçu comme une gaine externe s'étendant sur toute la longueur du corps isolant (3), et/ou en ce que le corps isolant (3) est conçu avec une seule couche, et/ou en ce que le renfort (4) est conçu avec une ou plusieurs couches et/ou sous forme de couche fermée.
  10. Tube de fusible selon l'une quelconque des revendications précédentes 7 à 9, caractérisé en ce qu'aux extrémités, respectivement une zone terminale (6) est dotée d'un diamètre externe réduit, en particulier celle du renfort (4).
  11. Tube de fusible selon la revendication 10, caractérisé en ce qu'un capuchon interne (5) en matériau électroconducteur, en particulier en cuivre ou en alliage de cuivre, est appliqué sur la zone terminale (6), selon lequel de préférence le capuchon interne (5) déborde, au moins partiellement, sur l'extérieur du renfort (4).
  12. Tube de fusible selon la revendication 10 ou 11, caractérisé en ce qu'une rainure (8), de préférence circonférentielle, est prévue dans la zone terminale (6), selon lequel de préférence le capuchon interne (5) vient en prise par complémentarité de forme, en particulier avec son bord externe (11), au moins partiellement dans la rainure (8).
  13. Tube de fusible selon la revendication 10, 11 ou 12, caractérisé en ce qu'un chanfrein (9) du renfort (4) est prévu à l'extrémité externe de la zone terminale (6).
  14. Fusible haute tension (2) avec un tube de fusible (1) selon l'une quelconque des revendications précédentes 7 à 13 ainsi que de deux capuchons de contact (17) et/ou d'au moins un capuchon interne (5).
  15. Fusible haute tension selon la revendication 14, caractérisé en ce que le capuchon de contact (17) déborde au moins partiellement à l'extérieur sur le renfort (4) et/ou uniquement sur la zone terminale (6) du tube de fusible (1).
EP16000705.0A 2015-04-13 2016-03-24 Procede de fabrication d'un tube de securite et d'un fusible haute tension Active EP3082147B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201630322T SI3082147T1 (sl) 2015-04-13 2016-03-24 Postopek za izdelavo cevi varovalke in visokonapetostne varovalke
PL16000705T PL3082147T3 (pl) 2015-04-13 2016-03-24 Sposób wytwarzania rury bezpiecznikowej i bezpiecznika wysokonapięciowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015004507 2015-04-13
DE102015006336 2015-05-19

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EP3082147A1 EP3082147A1 (fr) 2016-10-19
EP3082147B1 true EP3082147B1 (fr) 2019-05-01

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Application Number Title Priority Date Filing Date
EP16000705.0A Active EP3082147B1 (fr) 2015-04-13 2016-03-24 Procede de fabrication d'un tube de securite et d'un fusible haute tension

Country Status (6)

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EP (1) EP3082147B1 (fr)
DE (1) DE202016008656U1 (fr)
ES (1) ES2735092T3 (fr)
HU (1) HUE044770T2 (fr)
PL (1) PL3082147T3 (fr)
SI (1) SI3082147T1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018009183A1 (de) * 2018-11-23 2020-05-28 Siba Fuses Gmbh Verwendung einer Sicherung für eine Gleichstromübertragung
DE102019005664A1 (de) * 2019-06-25 2020-12-31 Siba Fuses Gmbh Schmelzleiter sowie Sicherung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE679328C (de) 1936-03-20 1939-08-02 Siemens Schuckertwerke Akt Ges Schmelzsicherung
DE1438053C3 (de) * 1962-07-18 1975-09-25 Jean Mueller Ohg Elektrotechnische Fabrik, 6228 Eltville Niederspannungs-Hochleistungs-Sicherung mit einer den Schmelzleiter und das Einbettungsmaterial umgebenden Kunststoffhülle als Sicherungsgehäuse und auf ein Verfahren zur Herstellung dieser Sicherungen
US3911385A (en) * 1974-05-07 1975-10-07 Westinghouse Electric Corp Outdoor current limiting fuse
US4058785A (en) * 1976-09-22 1977-11-15 General Electric Company Current limiting fuse
US4283700A (en) 1979-01-15 1981-08-11 San-O Industrial Co., Ltd. Double tubular time-lag fuse having improved breaking capacity
US5262750A (en) * 1989-06-02 1993-11-16 Cooper Industries, Inc. Ceramic coating material for a microfuse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2735092T3 (es) 2019-12-16
EP3082147A1 (fr) 2016-10-19
PL3082147T3 (pl) 2019-10-31
DE202016008656U1 (de) 2018-11-09
SI3082147T1 (sl) 2019-08-30
HUE044770T2 (hu) 2019-11-28

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