EP2502251A1 - Unité de commutation destinée à commuter des tensions continues élevées - Google Patents

Unité de commutation destinée à commuter des tensions continues élevées

Info

Publication number
EP2502251A1
EP2502251A1 EP11790724A EP11790724A EP2502251A1 EP 2502251 A1 EP2502251 A1 EP 2502251A1 EP 11790724 A EP11790724 A EP 11790724A EP 11790724 A EP11790724 A EP 11790724A EP 2502251 A1 EP2502251 A1 EP 2502251A1
Authority
EP
European Patent Office
Prior art keywords
switching unit
conductor
melting point
contact
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.)
Granted
Application number
EP11790724A
Other languages
German (de)
English (en)
Other versions
EP2502251B1 (fr
Inventor
Waldemar Weber
Klaus Werner
Hubert Harrer
Wolfgang Schmidt
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.)
Ellenberger and Poensgen GmbH
Original Assignee
Ellenberger and Poensgen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ellenberger and Poensgen GmbH filed Critical Ellenberger and Poensgen GmbH
Priority to PL11790724T priority Critical patent/PL2502251T3/pl
Publication of EP2502251A1 publication Critical patent/EP2502251A1/fr
Application granted granted Critical
Publication of EP2502251B1 publication Critical patent/EP2502251B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/122—Automatic release mechanisms with or without manual release actuated by blowing of a fuse

Definitions

  • the invention relates to a switching unit for switching high DC voltages, in particular for DC interruption between a DC power source and an electrical device, having two terminals protruding from a housing, which are electrically conductively coupled via a conductor path, and arranged with one between the first and the second terminal mechanical contact system with two contacts which are movable relative to each other and can be transferred from a closed position to an open position, as well as with a triggered by a thermal fuse disconnecting device for extinguishing an arc resulting from the opening of the contacts.
  • a direct current source is understood to mean, in particular, a photovoltaic (PV) generator (solar system) and an electrical device, in particular an inverter.
  • PV photovoltaic
  • a PV system or solar system with a so-called PV generator which in turn consists of grouped, combined into sub-generators solar modules.
  • the solar modules are connected in series or in parallel strands. While one sub-generator delivers its DC power through two terminals, the DC Power of the entire PV generator via an inverter fed into an AC power grid.
  • so-called generator junction boxes are placed close to the sub-generators. The thus-accumulated DC power is usually fed via a common cable to the central inverter.
  • PV systems permanently supply an operating current and an operating voltage in the range between 180V (DC) and 1500V (DC).
  • DC 180V
  • DC 1500V
  • a reliable separation of the electrical components or devices from the effective as a DC power source PV system is desirable, for example, for installation, assembly or service purposes and in particular for general personal protection.
  • a corresponding disconnecting device must be capable of interrupting under load, that is, without first switching off the DC power source.
  • switching contact For load separation mechanical switches (switching contact) can be used. These have the advantage that when the contact opening is made as well as a galvanic isolation of the electrical device (inverter) from the DC power source (PV system) is made.
  • Such switching units are generally known in the art.
  • the arcs that occur when the contacts are opened under load are quickly moved to designated extinguishing devices where the corresponding arc extinction takes place.
  • the force required for this is done by magnetic fields, so-called Blasfelder, which are typically generated by one or more permanent magnets.
  • Blasfelder which are typically generated by one or more permanent magnets.
  • the arc is passed into corresponding extinguishing chambers, where the arc extinction is carried out according to known principles.
  • Such extinguishing chambers consist for example of splitter stacks.
  • the material used for the quenching plates usually ferromagnetic materials are used, since the magnetic field that accompanies the arc, in the vicinity of a ferromagnetic material tends to pass through the magnetic better conducting quenching plates. This creates a suction effect in the direction of the quenching plates, which causes the arc to move to the arrangement of the quenching plates and is divided between them.
  • the circuit In order to bring the PV system into a safe state for man and plant in the event of such errors, the circuit must be permanently disconnected so that the operator can detect the error and replace the switching unit. When transferring to this state, do not damage or destroy the switch housing of the device so that the live parts remain isolated. The transfer in such an error case is done by a so-called fail-safe element of the switching unit, without having to take advance activation measures, such as a manual intervention or the like must be made.
  • Typical fail-safe elements are triggered by an exceeding of a permissible material-dependent current density (current per area). An electrical conductor is melted through and the circuit is interrupted. This is a common way to detect and turn off overcurrents, such as those used in fuses. However, this method can not be used in PV systems, since it can not be assumed that there is a specific current density or current level. The triggering or error detection should rather be independent of current heights. From DE 10 2008 049 472 A1 an overvoltage arrester with at least one diverting element as well as with a separating device is known in which, on the one hand, a thermally realizable separation of the at least one diverting element can be carried out.
  • Such a fail-safe element is also not suitable for the above-described application, since here too the error detection takes place only from a certain overcurrent. A pending arc would occur in the event of a fault at higher voltages in the current working range of the switching unit.
  • the invention has for its object to provide a switching unit of the type mentioned, which can reliably and safely switch a high DC voltage.
  • the switching unit should be suitable for carrying out a DC interruption between a DC power source, in particular a PV generator, and an electrical device, in particular an inverter.
  • the switching unit should be set up to extinguish an arcing fault that does not automatically extinguish within the switching unit without the need for activation measures beforehand, for example a manual intervention or the like.
  • the switching unit comprises two terminals protruding from a housing, which are electrically conductively coupled via a conductor path.
  • a mechanical contact system with two contacts is arranged, which are movable relative to each other and can be transferred from a closed position to an open position.
  • a releasable by means of a thermal fuse separator is used to extinguish an arc resulting from the opening of the contacts.
  • the thermal fuse comprises a melting point arranged in the conductor path, which is connected on the one hand to the contact system and on the other hand via a movable conductor section to the first connection.
  • a non-self-extinguishing arc can form when the contact system is opened.
  • the separation device is triggered and the connection between the conductor section and the contact system at the melting point is separated when the melting point of the melting point is reached or exceeded as a result of the arc.
  • the thermal fuse of the switching unit thus serves as a fail-safe element, which is particularly suitable for use in PV systems. Furthermore, the Fall protection of the switching unit cost-effectively and thus meets the requirements of economic manufacturability.
  • the melting point is in particular a solder joint, which is separated when the response temperature is reached or exceeded.
  • a fused alloy such as an aluminum-silicon-tin alloy or other well-known low-melting alloys may be used.
  • the melting point of such alloys is usually in the range of 150 ° C to 250 ° C.
  • the current is safely conducted in rated operation, without the thermal fuse is triggered.
  • other temperature-sensitive and electrically conductive materials as melt material, such as an electrically conductive plastic.
  • the switching unit by selecting the conductive and / or insulating materials of the switching unit a corresponding variation in the response temperature and / or the triggering time can be achieved. Furthermore, it is conceivable that with a suitable dimensioning and composition of the materials used, such a switching unit can also be used for lower voltages.
  • the separating device comprises a prestressed spring element.
  • the spring restoring force acts along a direction of separation directly or indirectly on the movable conductor section. If, in the event of a fault, the melting point is heated inadmissibly, it is melted and as a result the switching unit causes a power interruption due to the spring restoring force.
  • the preloaded spring element thus allows an automatic power interruption without an activation measure must be made by a person in case of failure.
  • the spring element deflects the conductor section when the separation device is triggered by a pivot point which is at a distance from the melting point.
  • the covered swing angle is in particular greater than or equal to 90 °.
  • the housing of the switching unit has an insulating chamber adjacent to the melting point.
  • the conductor portion is pressed as a result of the spring restoring force in this isolation chamber.
  • the insulating chamber is used for the spatial and thus insulating separation of the conductor portion of the contact system, whereby the extinction of the arc is advantageously supported.
  • the separating device has a separating element which is movably held in the housing and which is guided against the conductor section.
  • the melting point is naturally sensitive to external forces acting on it. Due to the aforementioned spring restoring force of the separating device on the conductor section, the melting point is relatively heavily loaded.
  • the separating element By the separating element, the restoring force on a larger contact surface on Start ladder section effectively. In other words, this means that the resulting torque acting at the melting point is advantageously reduced. As a result, less mechanical stress is applied to the melting point.
  • the separating element also sets close to the melting point on the conductor section, so that the force arm and thus the acting torque at the melting point is further reduced.
  • This torque, or the Kraftarmin and / or the Trennelementbeunk can be used as an additional parameter for dimensioning the response temperature and / or the trip time of the fail-safe of the switching unit or the separation device.
  • the separating element is guided slidingly movable in the housing and is moved when triggering the separator, by the spring return force, together with the conductor portion in the insulating chamber.
  • the conductor section is completely covered in the tripped state.
  • the disconnecting device is triggered, the further arc, due to the pivoting of the conductor section, is squeezed between the separating element and the insulating chamber. The crushing ensures a particularly quick and safe extinguishing of the arc.
  • the spring element is in this case a fferend bucking spring, which presses the separating element along the direction of separation in the insulating chamber.
  • the separating element and the insulating chamber are geometrically complementary designed for this purpose, so that the arc in the chamber can be squeezed and the conductor portion of the separating element relative to the contact system is completely concealed.
  • the Einquetschilia is expedient adaptable to the performance parameters of the DC power source.
  • the separating element is rotatably held in the housing. When the separation device is triggered, the conductor section is pivoted by the separation element about the pivot point spaced from the fusion point.
  • the spring element is a leg spring, through which a
  • the contact system comprises a moving and a fixed contact. Between the fixed contact and the melting point, an electrically conductive contact carrier is arranged, which couples the fixed contact and the melting point thermally conductive.
  • an electrically conductive contact carrier is arranged between the fixed contact and the melting point, which couples the fixed contact and the melting point thermally conductive.
  • the heat capacity or the melting point of the contact carrier is higher than that or of the melting point.
  • the contact carrier is made of a thermally and electrically highly conductive material, such as copper, so that a fast and reliable release of the separator is ensured.
  • the contact carrier can be designed and dimensioned accordingly, for example by a taper on the carrier.
  • the moving contact is coupled via a trigger mechanism with a rocker arm for manually actuating the contact system.
  • the triggering mechanism, the moving contact and the fixed contact form a (mechanical) jump contact system.
  • the contacts are typically removed from each other as quickly as possible by a prestressed leg spring, typically in a few milliseconds.
  • a (first) emerging arc is normally erasable, so that the separation device is not triggered.
  • the movable conductor section is a flexible connecting element, in particular a stranded conductor, whose fixed end is unsolvable with the first connection and whose loose end is soldered to the melting point, preferably to the contact carrier.
  • the housing of the switching unit accommodates the conductor path, the mechanical contact system, the disconnecting device and the thermal fuse.
  • the current-carrying parts of the switching unit are isolated from the environment. In particular, this advantageously protects a person operating the switching unit against the high voltages and currents applied.
  • the housing and the separating element are made of a thermally stable plastic material, in particular of a thermoset material. This ensures that the high heat development due to the arc, the switch housing is not damaged or destroyed. As a result, the current-carrying parts continue to be isolated in the event of a fault in a touch-proof manner. Furthermore, it is ensured that the separating element is not damaged or destroyed by the second arc in the region of the melting point. As a result, the separating element reliably disconnect the switching unit from the mains in the event of a fault.
  • the separating element and / or the insulating chamber are made of a plastic material outgassing in the event of fire, in particular of polyamide.
  • a plastic material outgassing in the event of fire, in particular of polyamide.
  • suitable are, for example, polycarbonate or polyoxymethylene.
  • the plastic outgassing contribute advantageously to a fast extinction of the (second) arc. In particular, the gases hinder ionization of the air gap in the region of the dissolved melting point or allow it to decay faster.
  • the device comprises a current-carrying switching unit according to the invention.
  • the terminals and the housing are suitable and arranged for a circuit board assembly for this purpose.
  • the separating device is therefore particularly suitable for reliable and touch-safe galvanic DC interruption both between a PV system and one of these associated inverter as well as in connection with, for example, a fuel cell system or an accumulator (battery).
  • FIG. 1 is a block diagram of the switching unit according to the invention with a
  • Fig. 2 in a sectional view of the switching unit in a closed
  • FIG. 4 in a sectional view of the switching unit according to FIG. 1 and FIG. 2 after a triggering of the fail-safe system
  • Fig. 7 in a sectional view fragmentary the switching unit with an alternative separation device
  • Fig. 8 in a sectional view fragmentary, the switching unit of Figure 6 in the triggered fail-safe state.
  • Fig. 1 shows schematically a switching unit 1, which is connected in the embodiment between a PV generator 2 and an inverter 3.
  • the PV generator 2 comprises a number of solar modules 4, which are guided parallel to each other on a common generator junction box 5, which effectively serves as a collection point.
  • the switching unit 1 comprises essentially two subsystems for the galvanic direct current isolation of the PV generator 2 from the inverter 3.
  • the first subsystem is a manually operable mechanical contact system 7, the second subsystem is a fail-safe triggering system independently triggered in the event of a fault.
  • System 8 In the negative pole representing return line 9 of the switching unit 1 - and thus the overall system - can be connected in a manner not shown further contact and fail-safe systems 7, 8.
  • the switching unit 1 comprises a housing 10 from the two terminals (external terminals) 1 1 and 12 protrude.
  • the switching unit 1 is connected via the terminals 11 and 12 in the main current path 6 between the PV generator 2 and the inverter 3.
  • the contact system 7 further comprises a via a rocker arm 13 and a coupling lever 14 manually operable contact bracket 15 is formed as a moving contact and a contact carrier 16 as a fixed contact.
  • the contacts or contact surfaces 17a and 17b between the contact clip 15 and the contact carrier 16 are designed as plate-like contact elements.
  • the contact clip 15 is electrically conductively coupled to the terminal 11 via a fixed stranded conductor 18, wherein both the connection between the contact clip 15 and the stranded conductor 18 and the connection between the stranded conductor 18 and the terminal 11 are designed as a welded connection.
  • the contact clip 15 is substantially hammer-shaped and made of an electrically conductive metal, wherein the contact surface 17a is arranged at the hammer head end and in the closed position of the switching unit 1 (FIG. 2) rests on the contact surface 17b.
  • the contact carrier 16 is made of copper, so that it has a high electrical and thermal conductivity.
  • the contact carrier 16 has substantially the shape of a step, wherein at the upper step edge, the contact surface 17b is arranged.
  • the step body of the contact carrier 15 has a tapered cross section to increase its thermal conductivity.
  • a movable stranded conductor 20 is electrically conductively coupled via a solder 19.
  • the stranded conductor 20 may have an electrically insulating shield 21, which is removed at its two ends.
  • One of the conductor ends (fixed end) of the stranded conductor 20 is permanently connected to the terminal 12 by welding, while the other end of the conductor (loose end) is soldered to the solder 19 on the contact carrier 15.
  • the circuit In the closed position of the switching unit 1, the circuit is thus closed via the two terminals 1 1 and 12 and the main current path 6.
  • the current flows through a thus formed conductor path 22 comprising the terminal 11, the stranded conductor 18, the contact clip 15, the contact surfaces 17a and 17b, the contact carrier 16, the solder 19, the stranded conductor 20 and the terminal 12.
  • the conductor path 22 extends approximately U-shaped within the housing 10th
  • the housing 10 is made of an electrically insulating and heat-resistant plastic and is - as shown in Fig. 5 - formed from two complementary housing halves 10a and 10b.
  • the half-shells 10a and 10b can be connected by four holes 23 by means of screws or rivets, not shown.
  • the holes 23 are arranged distributed approximately at the vertices of an imaginary quadrilateral evenly on the housing 10.
  • the housing 10 has an approximately rectangular cross-section, so that a simple assembly of several juxtaposed switching units 1 on a common circuit board is possible.
  • the housing 10 has an approximately U-shaped circumference, wherein the two U-legs are interconnected by a horizontal part. For this horizontal part protrude the two terminals 11 and 12 and at the U-base at least partially the rocker arm 13 out.
  • the half-shells 10a and 10b are designed with corresponding inner-profile structures, in which the individual components of the switching unit 1 can be used in a form-fitting manner or with play.
  • the rocker arm 13 serves not only to open and close the contact system 7, but also as an external visual indication of the switching state of the switching unit 1, as shown in Fig. 4, in which the rocker arm 13 is in the open position.
  • an external force for tilting the switch is converted by a hinge system 24 in a pivoting movement of the contact clip 15.
  • the fail-safe system 8 ensures permanent galvanic isolation between the PV generator 2 and the inverter 3.
  • the fail-safe system 8 comprises the contact carrier 16, the solder 19, the stranded conductor 20, a separating device 27 with a helical compression spring 28 and a slide 29 and an insulating chamber 30. This embodiment of the separation device 27 is shown in more detail in FIG.
  • the helical compression spring 28 is located in a guide chamber 31 of the housing 10, wherein a pin-like extension 32 of the guide chamber 31 is at least partially enclosed by the helical compression spring 28.
  • the helical compression spring 28 presses against the slide 29 due to a spring restoring force F. the stranded conductor 20.
  • the slider 29 has a projection 33 formed as a finger, which presses directly against the stranded conductor 20.
  • the finger 33 begins near the solder 19, so that the torque acting on the soldering due to the spring restoring force F is as low as possible.
  • the guide chamber 31 and the insulating chamber 30 are at a height along a separation direction A and are separated from each other by the perpendicular thereto stranded conductor 20.
  • the guide chamber 31 and the insulating chamber 30 further have the same (slider-shaped) cross-section.
  • the slide 29 and the insulating chamber 30 are geometrically complementary, so that they are easily slidable.
  • the Einquetschitz the isolation chamber 30 is suitably adapted to the performance parameters of the PV generator 2.
  • the stranded conductor 20 is pivoted about a pivot point 34, and finally bent by about 90 ° (Fig. 4).
  • a second arc (not shown) forms between the contact carrier 16 and the loose end of the stranded conductor 20, which runs approximately along the connecting line in the separated state. This second arc is extended by the displacement of the slide 29 on the one hand, and thereby cooled, and on the other hand due to the fit between the slide 29 and the insulating chamber
  • the contact carrier 16 and the stranded conductor 20 are galvanically separated, whereby at the same time the arc 26 is extinguished.
  • the finger 33 favors the separation of the soldering and encapsulates the second arc when stop at the bottom of the insulating chamber 30 completely on or off.
  • Both the slider 29 and the inner walls of the insulating chamber 30 may be made of an outgassing and electrically insulating plastic material. Due to the evolution of heat in the vicinity of the second arc, in particular in the region of the separation device 27, gases are released from these plastic materials. The gases hinder ionization of the air gap in the region of the dissolved solder 19 or let the ionization decay faster. As a result, the second arc is more easily erased by the separation device 27.
  • the conductor path 22 of the switching unit 1 has in the tripped state (FIG. 4) accordingly two galvanic separation points, namely on the one hand between the contact surfaces 17a and 17b and on the other hand between the contact carrier 16 and the loose end of the stranded conductor 20.
  • the materials and dimensions of the switching unit 1 and Their separation device 27 are dimensioned accordingly to ensure even in the event of a fault within a few milliseconds a DC galvanic interruption between the PV generator 2 and the inverter 3.
  • a second embodiment variant of the switching unit 1 with a separating device 27 ' is explained below with reference to FIGS. 7 and 8, with only the second half of the conductor path 22 relevant to the fail-safe system 8 (the contact carrier 16, FIG. the solder 19, the stranded conductor 20 and the terminal 12) is shown.
  • the separating device 27 ' comprises a prestressed leg spring 35, an approximately hook-like pivoting head or lever 36 and an insulating chamber 30'.
  • the inner profile of the housing 2 is set up and designed in accordance with the separating device 27 '.
  • the insulating chamber 30 'in this embodiment is substantially the lower half (of the top rail 12 of) of the housing 10.
  • the pivoting head (pivot lever) 36 is approximately L-shaped, wherein both the pivoting head 36 and the Insulating chamber 30 'are made of an outgassing electrically insulating Kunststoffmate- material.
  • Swivel head 36 attaches to strand 20 in a similar manner as finger 33 in the previously described variant.
  • the prestressed leg spring 35 is arranged at the lower end of the vertical L-leg of the swivel head 36.
  • the leg spring 35 of the swivel head 36 is pivotally or rotatably held.
  • the leg spring 35 pivots the pivoting head 36 due to a spring restoring force F '.
  • the strand 19 is pivoted about the pivot 34 'at an angle of about 90 ° in the direction of the lower right corner of the housing 10 and the insulating chamber 30'.
  • the arc is not crushed, but only artificially extended, so that the arc plasma can be erased due to the resulting cooling.
  • the arc is much more prolonged compared to the first embodiment, since the stranded conductor 20 is not pressed in the direction of the right side wall, but is pivoted into the lower corner.
  • the switching unit 1 is equipped with the separation device 27 'and adapted to ensure within a few milliseconds a galvanic DC interruption between the PV generator 2 and the inverter, both in normal and in case of failure.
  • the horizontal rail side bearing surface of the housing 10 is about 4 cm wide, the side edges of the housing about 6 cm long and the housing 10 about 2 cm deep.
  • the distance of the contact surfaces 17a and 17b is in the open position about 1 cm and the distance between the contact carrier 15 and the loose end of the stranded conductor 20 after triggering of the separator 27 and 27 'at least 1, 5 cm.
  • the plastics for housing 10, insulating chamber 30/30 'and slide 29 or swivel head 35, the shape and the material of the contact carrier 16 and the torque acting on Lot 19 are selected so that the switching unit 1 has a nominal voltage of about 1500 V (DC).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Fuses (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne une unité de commutation (1) destinée à commuter des tensions continues élevées, en particulier pour une coupure galvanique de courant continu entre une source de courant continu (2) et un dispositif électrique (3). L'unité de commutation (1) comprend deux raccords (11, 12) faisant saillie d'un boîtier (10) et couplés de façon électroconductrice par un trajet conducteur (22), un système de contact (7) disposé entre le premier et le second raccord (11, 12) et un dispositif de séparation (27, 27') pouvant être déclenché au moyen d'un coupe-circuit thermique (8). Le coupe-circuit thermique (8) comprend un point de fusion (19) disposé dans le trajet conducteur (22) et relié d'une part au système de contact (7) et d'autre part au moyen d'une partie conductrice mobile (20) au premier raccord (12). Le dispositif de séparation (27, 27') est déclenché et la liaison entre la partie conductrice (20) et le système de contact (7) au niveau du point de fusion (19) est rompue lorsque, à la suite d'un arc électrique (26) se produisant à l'ouverture du système de contact (7), la température de fusion du point de fusion (19) est atteinte ou dépassée.
EP11790724A 2011-01-25 2011-11-09 Unité de commutation destinée à commuter des tensions continues élevées Active EP2502251B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11790724T PL2502251T3 (pl) 2011-01-25 2011-11-09 Jednostka łącznikowa do łączenia wysokich napięć stałych

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202011001891 2011-01-25
DE102011015449.3A DE102011015449B4 (de) 2011-01-25 2011-03-30 Schalteinheit zum Schalten von hohen Gleichspannungen
PCT/EP2011/005616 WO2012100793A1 (fr) 2011-01-25 2011-11-09 Unité de commutation destinée à commuter des tensions continues élevées

Publications (2)

Publication Number Publication Date
EP2502251A1 true EP2502251A1 (fr) 2012-09-26
EP2502251B1 EP2502251B1 (fr) 2013-01-30

Family

ID=46510887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11790724A Active EP2502251B1 (fr) 2011-01-25 2011-11-09 Unité de commutation destinée à commuter des tensions continues élevées

Country Status (13)

Country Link
US (1) US8766760B2 (fr)
EP (1) EP2502251B1 (fr)
KR (1) KR101521074B1 (fr)
CN (1) CN102725812B (fr)
AU (1) AU2011338139B2 (fr)
CA (1) CA2785605C (fr)
DE (2) DE102011015449B4 (fr)
ES (1) ES2403489T3 (fr)
HR (1) HRP20130376T1 (fr)
PL (1) PL2502251T3 (fr)
PT (1) PT2502251E (fr)
SG (1) SG182295A1 (fr)
WO (1) WO2012100793A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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DE202011110186U1 (de) 2013-02-08
AU2011338139B2 (en) 2014-08-14
DE102011015449B4 (de) 2014-09-25
CA2785605A1 (fr) 2012-08-02
DE102011015449A1 (de) 2012-07-26
CA2785605C (fr) 2017-04-25
PL2502251T3 (pl) 2013-07-31
SG182295A1 (en) 2012-08-30
ES2403489T3 (es) 2013-05-20
KR101521074B1 (ko) 2015-06-16
AU2011338139A1 (en) 2012-08-09
WO2012100793A1 (fr) 2012-08-02
CN102725812A (zh) 2012-10-10
CN102725812B (zh) 2015-07-29
US8766760B2 (en) 2014-07-01
US20120268233A1 (en) 2012-10-25
HRP20130376T1 (en) 2013-05-31
PT2502251E (pt) 2013-05-06
KR20140008231A (ko) 2014-01-21
EP2502251B1 (fr) 2013-01-30

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