EP1747564B1 - Überspannungs-schutzeinrichtung mit einem verbesserten display-system - Google Patents

Überspannungs-schutzeinrichtung mit einem verbesserten display-system Download PDF

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Publication number
EP1747564B1
EP1747564B1 EP05757170.5A EP05757170A EP1747564B1 EP 1747564 B1 EP1747564 B1 EP 1747564B1 EP 05757170 A EP05757170 A EP 05757170A EP 1747564 B1 EP1747564 B1 EP 1747564B1
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EP
European Patent Office
Prior art keywords
control piece
protection
protection component
disconnecting
disconnecting means
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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.)
Not-in-force
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EP05757170.5A
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English (en)
French (fr)
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EP1747564A1 (de
Inventor
Michel Georges Jean Donati
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.)
ABB France SAS
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ABB France SAS
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Publication of EP1747564A1 publication Critical patent/EP1747564A1/de
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Publication of EP1747564B1 publication Critical patent/EP1747564B1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
    • 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
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"

Definitions

  • the present invention relates to the general technical field of devices for protecting installations or electrical equipment against transient electrical surges.
  • Protection devices for electrical installations are commonly used to protect electrical and electronic devices against overvoltages that can be generated for example by discharges due to lightning. These devices generally comprise an active part formed by one or more protection components of the varistor or spark gap type, for example.
  • Varistors are commonly used components to protect electrical installations or equipment against transient overvoltages.
  • the degradation of the varistor is difficult or impossible to predict since it depends not only on the number of current shocks experienced by the varistor during its lifetime, but also on their amplitude.
  • each varistor In order to enable rapid identification of a defective varistor, and to reduce the above-mentioned latency, it is known to equip each varistor with display means, which can indicate to a third party that the varistor is out of service. .
  • the varistors generally encountered are thus associated with disconnection means, adapted to disconnect the varistor when it is in a degraded state, to which are connected functionally means for visualization of the state of the varistor, generally operated by the control means. disconnection, and which indicate to a third party whether the varistor is in use or disconnected.
  • the display means may thus be in the form of a cursor, associated with a viewing part, and able to move in translation under the action of the disconnection means, so as to indicate, according to its position, the state of the varistor, and this through the setting facing the viewing part, for example a colored screen, with a viewing window formed in the housing of the protective device.
  • the cursor and the viewing piece are either secured to the disconnection means, in particular a disconnection blade, or independent while being controlled and actuated by the latter.
  • EP 0 716 493 A1 a protection device against transient electrical overvoltages, having two varistors, means for disconnecting them and mechanical display means.
  • the disconnecting means are made in the form of a respective welded strip which is released by virtue of its intrinsic elasticity when the solder melts under the effect of a heating of the corresponding varistor.
  • the mechanical display means are formed of a viewing drawer which moves opposite a window under the effect of a slider against which it is elastically constrained, the slider being moved by the disconnecting blades when they are free.
  • the viewing drawer in which case it is the cursor itself which provides the visualization by moving in front of the viewing window, the cursor being indexed in translation by an elastic beam provided with a toothing cooperating with notches in an indexing surface opposite.
  • the cursor or the viewing part is obstructed (e) in its movement, especially in the case where the cursor and / or the viewing part are improperly sized, or if the guide means are defective, thus leading to a bad guide of the cursor.
  • the cursor and / or the viewing piece can then hinder or even prevent the disconnection of the varistor.
  • the assemblies in which the cursor and / or the viewing part are actuated and their displacements controlled by the disconnection means generally require perfecting the dimensioning of the parts, so as on the one hand to avoid the formation of games between these last, and on the other hand to avoid any risk of blocking the disconnection system and / or visualization. Such a constraint then contributes to significantly increasing the manufacturing cost of the devices.
  • an overvoltage protection device comprising a metal oxide varistor housed in a housing.
  • This protection device further comprises a protective screen sized to slide freely in a slot defined by slot rails.
  • the protective device is further provided with a contact element welded to a surface of the varistor.
  • the protective shield under the influence of stress springs, is provided to separate the contact element from the varistor. Portions of the arm-shaped shield may then pass through crankcase holes providing a visual indication that the device has been tripped.
  • the objects assigned to the invention are intended to propose a new device for protecting electrical installations against overvoltages allowing the simultaneous and differentiated visualization of the state of several protection components connected in parallel.
  • Another object of the invention is to provide a new device for protecting electrical installations against overvoltages which guarantees easy, reliable and instantaneous visualization of the state of the protection components.
  • Another object of the invention is to provide a new device for protecting electrical installations against overvoltages whose design is particularly simple and economical.
  • Another object of the invention is to propose a new device for protecting electrical installations against overvoltages requiring only a limited number of parts to obtain the connection / disconnection function on the one hand, and the visualization function on the other hand. go.
  • Another object of the invention is to propose a new device for protecting electrical installations against overvoltages which ensures a particularly reliable and rapid disconnection of one of the protection components when the latter is in a degraded state.
  • the overvoltage protection device according to the invention is intended to be connected bypass on the equipment or electrical installation to be protected.
  • electrical installation refers to all types of devices or networks susceptible to voltage disturbances, including transient overvoltages due to lightning.
  • the device for protecting electrical installations against overvoltages which comprises at least one protection component 10, is advantageously intended to be disposed between a phase of the installation to be protected, and earth.
  • each protection component of the device is formed by a varistor 10.
  • the device instead of being connected bypass between a phase and the earth, is connected between the neutral and the earth, between the phase and the neutral or between two phases (case of differential protection).
  • the protection device comprises at least one varistor 10, means 20 of disconnection of each varistor, sensitive to the state of the varistor, and adapted to individually disconnect each varistor of the electrical installation when the varistor is located in a degraded state, and means 30 for visualizing the state of each varistor, operably connected to the disconnecting means 20.
  • the protection device is formed by a protection cell 1 which may comprise one or more modules 2 each containing a varistor 10 ( figures 1 and 4 ).
  • each module 2 advantageously comprises a base 3 made of electrically insulating material, a varistor 10, two electrically conductive connection blades 4A, 4B constituting the poles of the varistor, and disconnection means 20.
  • the disconnection means 20 are preferably formed by a thermal disconnector, such as for example a disconnection blade 21 in thermal contact with the associated varistor 10, so that the heating of the varistor, linked to the arrival at the end of life of the latter, causes the opening of the disconnection blade 21, thus isolating the varistor lines to protect.
  • a thermal disconnector such as for example a disconnection blade 21 in thermal contact with the associated varistor 10, so that the heating of the varistor, linked to the arrival at the end of life of the latter, causes the opening of the disconnection blade 21, thus isolating the varistor lines to protect.
  • the disconnection means 20 are thus capable of occupying a so-called closing position, in which the varistor 10 is connected to the network or electrical installation, and an opening position, in which the varistor is disconnected from the installation electric. These two positions are illustrated on the figure 4 .
  • the disconnection blade 21 extends between two ends 21A, 21B, one of said ends 21A being preferably fixed by means of a hot-melt welding on the extension 5 of one of the connecting blades 4A , 4B.
  • the end 21A of the disconnection blade 21 is thus preferably stress welded, so that when the varistor 10 reaches the end of its life, it heats up and causes the solder to melt, which, once broken, allows the release of the disconnection blade 21.
  • connection blade 21 Due to its intrinsic elasticity, the disconnection blade 21 then moves away from the connection blade 4B, as shown in FIG. figure 4 (module 2 located on the left of the protection cell 1).
  • the display means 30 are adapted to inform a third party of the state of the one or more varistors contained in the protection cell 1. These display means 30 are functionally connected to the disconnection means 20.
  • the display means 30 comprise, for each protection cell 1, a control part 40 able to move under the control of the disconnection means 20.
  • the display means 30 also comprise a display member 50, associated with the control part 40, so that the display member 50 indicates, depending on the position of the control part 40, whether the varistor 10 is in service or disconnected.
  • the control part 40 and the display member 50 are preferably made of insulating plastic.
  • the control part 40 is mounted to move elastically between a first position, illustrated on the Figures 2a, 3a , 5a corresponding to a connected state of the one or more varistors 10, in which the control part 40 is elastically constrained and held in position by the disconnection means 20, and a second position, illustrated on the Figures 2b, 3b , 5c corresponding to a state disconnected from the varistors 10, in which the control part 40 is no longer held by the disconnecting means 20.
  • control part 40 and the disconnection means 20 are arranged in such a way that the disconnection means 20, when they open, deviate sufficiently from the control part 40 to release and thus allow the displacement free from the control room 40.
  • control part 40 is thus free to move, that is to say, it is neither actuated nor guided in displacement by other means than its own structure.
  • control part 40 comprises at least one so-called active part 40A which, when the disconnecting means 20 are in their closed position, bears against them ( Figures 2a, 3a , 5a ).
  • the mounting of the control part 40 relative to the disconnection means 20 is such that the active part 40A, when released from the disconnection means 20, is able to move in a direction D2 substantially perpendicular to the main direction D1 of displacement of the disconnection means 20 ( Figures 2b, 3b , 5c ).
  • the design of the protection device and in particular the mounting of the display means 30 of the state of the varistor allows thus, thanks to the small number of parts cooperating together and the limited number of contact points between these parts, to ensure a fast and reliable disconnection of the varistors or degraded. This reliability is further accentuated by the material independence of the display means 30 and the disconnection means 20.
  • the display means 30 are formed by mechanical means mounted in a housing 60, which also preferably contains a protection cell 1 comprising one or more varistors 10.
  • the control part 40 is formed by a branch 41 preferably substantially rigid mounted elastically in translation within the housing 60 by means of resilient means 70 of the kind spring.
  • the branch 41 may advantageously be formed by a rather thin rod or a plate, and extends longitudinally in a direction substantially parallel to the main direction D1.
  • the elastic means 70 is advantageously adapted to occupy a compressed position when the branch 41 is laterally constrained, that is to say in a direction substantially perpendicular to its direction of extension, by the disconnecting means 20 ( figure 2a ), and a rest position when the branch 41 is released from the disconnecting means 20 ( figure 2b ).
  • the branch 41 will preferably be sufficiently rigid so that its active portion 40A can come firmly in abutment against the disconnection means 20 and more particularly against the end 21A of the disconnection blade 21.
  • the arrangement corresponding to this first embodiment is represented on the Figures 2a and 2b in the case where the protection device, specifically the protection cell 1, has only one module 2, that is to say a single varistor 10.
  • the housing 60 is thus preferably sized to contain a cell protection device 1 comprising a single varistor 10.
  • the arrangement described in this first embodiment can also be transposed to the case where the protection cell 1 comprises several varistors 10 connected in parallel.
  • the disconnection means 20 are formed by a single disconnection blade 21, the end 21A is likely to move in the main direction D1, once the weld broken.
  • the elastic means 70 can advantageously be interposed between on the one hand one of the walls 60A of the housing 60, and on the other hand the control part 40.
  • the display member 50 is advantageously formed by a panel 51, for example rectangular, preferably mounted on and secured to the control member 40, specifically the branch 41.
  • the display member 50, specifically the panel 51 is also advantageously arranged so as to move facing a window 61 formed in one of the faces 60B of the housing 60, located opposite the base 3, to obtain a different visual appearance through the window 61, depending on the position of the control part 40.
  • the panel 51 is in a position shifted in the direction of movement D2 relative to the window 61 and can not, in this configuration, be viewed from the outside.
  • the panel 51 may have, from the outside, a colored appearance, for example green, indicating to a third party that the varistor is in use.
  • the control part 40 advantageously comprises a substantially flexible branch 41 mounted in stress within the housing 60 via the disconnection means 20.
  • the branch 41 can thus have a fixed first end 41A and for example secured to one of the walls 60A of the housing 60.
  • the branch 41 also has a second end 41 B, forming the active portion 40A of the control part 40, and free to move elastically in an angular stroke between the first position shown on the figure 3a and the second position represented on the figure 3b .
  • the end 21A of the disconnection blade 21 moves substantially in the main direction D1 until it does not constitute plus an obstacle to the free movement of the control part 40. Thanks to its intrinsic elasticity and its flexibility, the branch 41 can then perform a partial or total return to its rest position, as shown in FIG. figure 3b .
  • the display member 50 is preferably formed by a panel 51 capable of coming opposite a window 61 formed in one of the walls 60B of the casing 60, so as to indicate to a third party that the varistor associated with these display means 30 is in use.
  • the display member 50 precisely the panel 51, moves along an angular stroke between a position in which it is located substantially opposite of the window 61 and a position where it is angularly offset relative to the window 61.
  • the device comprises a protection cell 1 comprising a first and a second varistor 10 connected in parallel and associated respectively with a first and a second disconnecting means 20 ( figure 4 ).
  • control part 40 is advantageously formed by a first and a second branch 410, 420.
  • the display means 30 advantageously have a symmetry with respect to the plane S delimiting the separation between the two varistors 10 ( Figures 5a, 5b, 5c ).
  • Each of the branches 410, 420 may advantageously be mounted according to the first or the second embodiment previously described.
  • the branches 410 and 420 are then independent of one another and can provide a differentiated visual indication that the two varistors are in use, one of the varistors is disconnected, or the two varistors are disconnected.
  • control part 40 by means of two flexible branches 410, 420, each having a fixed end secured to one of the opposite side walls 60A, 60C opposite the housing 60.
  • the assembly described in the first embodiment of FIG. embodiment, which uses an elastic means 70, can also be adapted to the case where two varistors 10 are connected in parallel, and this with some obvious adaptations.
  • the branches 410, 420 of the piece of 40 are assembled so as to form a pin 400 which extends longitudinally preferably in the main direction D1 and which, in its constraint position ( figure 5a ), is interposed between the first and the second disconnection means 20, so that the latter, in the closed position, exert an external lateral stress on the branches 410, 420 tending to close the pin.
  • the branches 410, 420 of the pin 400 may be formed by rods or plates.
  • the pin 400 advantageously comprises a fixed end 400A and two so-called free ends 410B, 420B which bear, by lateral approach, against the disconnection means 20 when they are in their closed position ( figure 5a ).
  • the ends 410B, 420B advantageously form the active parts 40A of the control part 40.
  • the display member 50 is preferably formed by two panels 510, 520 which, when the two varistors 10 are in use ( figure 5a ), are both substantially facing a window 61 formed in the wall 60B of the housing 60.
  • the pin 400 is adapted to provide a differentiated visual indication that one or the other of the varistors 10 is disconnected. So, as this is represented on the figure 5b the pin 400 is capable of occupying an intermediate position in which the first leg 410 is laterally constrained by the first disconnecting means 20 and the second leg 420 is released from the second disconnecting means 20 thus indicating that only one varistor 10 is disconnected.
  • one of the panels 510 associated with the varistor in use remains opposite the window 61, occupying in particular half of the surface of the window 61, and the other panel 520, associated with the disconnected varistor, is is substantially angularly offset vis-à-vis the window 61, thus indicating to a third party that the associated varistor is disconnected.
  • the pin 400 is also advantageously capable of occupying a final position in which the two branches 410, 420 are released from the disconnection means 20. Each panel 510, 520 is then angularly offset relative to the window 61, thus indicating that both varistors 10 are disconnected.
  • the display member 50 may be simply formed by the portions of branches 410, 420 located opposite the window 61 when the varistors are in use.
  • each disconnecting means 20 is capable of being erased by deviating sufficiently from the control part 40 so as to release one of the branches 410, 420, and this when the heating of the varistor causes fusion of the solder maintaining the disconnecting means 20, precisely the disconnection blade 21, in the stress position.
  • the pin 400 has an intrinsic elasticity such that it naturally tends to unfold, that is to say to open when no longer under stress.
  • the deployed configuration of the pin 400 thus constitutes its rest position.
  • the active part 40A of the part control device 40 comprises release means 80 arranged to facilitate the release of the active part 40A when opening the disconnecting means 20 ( figure 6 ).
  • the release means 80 consist of one or more folds 81 formed in the active part 40A, so that the latter has an oblique front 82 facilitating the release of the control part 40.
  • the disconnection means 20 precisely the disconnection blade 21 deviates from the control part 40, the existence of the oblique front 82 allows the active part 40A of the control part 40 to disengage more easily by sliding against the end 21A the disconnecting means 20.
  • the control part 40 may be formed by two independent branches 410, 420 and interconnected by means of an elastic means 70 such as a spring.
  • the elastic means 70 advantageously tends to bring the active parts 40A closer to the control part 40.
  • the control part 40 does not have a fixed end.
  • the active portions 40A are advantageously kept apart from each other by the disconnection means 20, and this against the elastic means 70 tending to bring them closer together.
  • the ends 410A, 420A of the branches 410, 420 opposite to the active parts 40A advantageously form the display member 50 and come for this purpose in the field of the viewing window 61 when the means of 20 are in their closed position and exert an internal lateral stress on the branches 410, 420 ( figure 7a ).
  • one of the varistors is disconnected, so that the associated branch 420 is released from the corresponding disconnecting means 20 and its end 420A is no longer opposite the window 61.
  • the visual appearance of the window 61 thus indicates to the user that 50% of the varistors are out of order.
  • the control part 40 is formed by a pin 400 having a fixed part 400A from which two branches 410, 420 depart.
  • the two branches 410, 420 are furthermore connected, preferably in their middle part, via an elastic means 70 such as a spring which tends to separate them from one another.
  • the pin 400 is thus maintained in its closed position represented on the figure 8a via the disconnection means 20 which come to bear, when the two varistors are in use, on the active parts 40A of the two branches 410, 420 located near the fixed end 400A.
  • the display member 50 is also formed by the free ends 410A, 420A of the branches 410, 420 which fit into each other opposite the window 61.
  • the branch 410 is pushed by the elastic means 70 thus revealing the other half of the window 61 whose visual appearance indicates that all the varistors are disconnected and that it is necessary to proceed to their change.
  • the pin 400 is formed by two branches 410, 420 whose shapes give the pin 400 its intrinsic elasticity
  • the display member 50 is formed by the free ends 410A, 420A of said branches 410, 420 Said free ends 410A, 420A are advantageously shaped so as to cover each approximately 50% of the window 61 when the two varistors 10 are connected.
  • the pin 400 is formed by the assembly of two branches 410, 420, so that one of the branches 420 is located in the foreground when looking through the window 61, the other branch 410 being located behind the branch 420. As in the previous variant, it is the specific shape of the branches 410, 420 that give the pin 400 structural elasticity.
  • the display member 50 is designed to overestimate the degradation of the state of the varistors in order to induce the user to perform the replacement of the latter as soon as one of the varistors is disconnected. .
  • the display member 50 is designed so as to minimize the risk of error of interpretation of the visual appearance of the window 61.
  • the display member 50 is designed to so that when one of the varistors is disconnected, only 50% of the window 61 is uncovered, so that the user may think that the protection device is about halfway through its life. Under these conditions, the user can then consider that he still has a certain latency time to perform the change of the device.
  • the installation benefits from reduced protection to a single varistor, until replacement of the faulty varistor. Therefore, if a shock of very large amplitude current occurs, the installation may be totally unprotected, and this suddenly and unpredictably.
  • the display member 50 is designed so that at the first disconnection, the window 61 is more than 50% uncovered. As illustrated on the figure 10 , the display member 50 is thus distributed between the two branches 410, 420 and is preferably at the free ends 410A, 420A of said branches 410, 420.
  • the branch 420 located in the foreground relative to the window 61, has an extension a of its free end 420A.
  • This extension may for example be of trapezoidal shape and colored red.
  • a light b is formed in the free end 420A, said light b being intended to come substantially opposite the window 61 when the pin 400 is in the closed position and the two varistors are in use ( figure 10a ).
  • the end 420A of the branch 420 also has a part c, preferably colored in white, and arranged in the extension of the light b so as to also come substantially opposite the window 61 when the pin 400 is in its closed position illustrated on the figure 10a .
  • the branch 410 and precisely the end 410A of the latter comprises a portion d, for example colored in white and rectangular, dimensioned so that it comes substantially opposite the window 61 in the closed position of the pin 400 , and precisely behind the part c and the light b of the branch 420.
  • the user visualizes, in the configuration illustrated on the figure 10a , a window 61 homogeneous, and for example 100% white.
  • the window 61 makes it possible on the one hand to visualize the portion c, for example white, and on the other hand the portion d, which is also preferably white.
  • one of the disconnection means 20 deviates from the active portion 40A of the branch 420 thus releasing the latter.
  • the end 420A then moves, by elastic effect, with respect to the window 61.
  • the extension a comes then in the foreground opposite the window 61, thus hiding most of the portion d of the branch 410.
  • the window 61 is occupied for the most part (for example at 80%) by the prolongation a preferably red, the remaining 20% being occupied by the portion d preferably white. This visual appearance is thus likely to encourage the user to change the protection components as quickly as possible.
  • the active part 40A of the branch 410 is in turn released from the corresponding disconnection means 20 so that the end 410A of said branch 410 also deviates from the window 61.
  • the extension a of preferably red, is always in the foreground when looking through window 61 ( figure 10'c ). This extension preferably occupies about 80% of the window 61.
  • the window 61 also suggests, in this configuration, the bottom e of the housing 60, preferably red so that the window 61 appears completely red to the user, indicating that it is imperative to change the protection components as soon as possible because the installation is no longer protected.
  • protection cell 1 comprises more than two varistors 10 in parallel, it is conceivable to produce a control part 40 comprising more than two branches.
  • several windows may be provided in the housing, a given window corresponding for example to a given varistor.
  • the protection device according to the invention can also be equipped with remote signaling means, allowing a third party to remotely view the state of the varistors.
  • remote signaling means are well known to those skilled in the art and will not be the subject of a more detailed description.
  • the protection device according to the invention thus makes it possible, thanks to a particularly simple mounting of the display means 30, to ensure not only a particularly reliable and effective disconnection of the varistors when the latter are in a degraded state, but also of simultaneously allow a third party to view the state of these varistors and this by limiting the risk of seizure of the mechanism or possible problems of guiding parts.
  • the invention finds its industrial application in the design and manufacture of surge protection devices.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (10)

  1. Vorrichtung zum Schutz einer elektrischen Anlage vor Überspannungen, die Folgendes umfasst:
    - mindestens ein Schutzbauteil (10),
    - Mittel zur Trennung (20) des Schutzbauteils (10), die angepasst sind, um das Schutzbauteil (10) von der elektrischen Anlage zu trennen und eine geschlossene Stellung, in der das Schutzbauteil (10) verbunden ist, und eine geöffnete Stellung einnehmen können, in der das Schutzbauteil (10) getrennt ist;
    - Mittel (30) zur Anzeige des Zustands des Schutzbauteils (10), die funktionell an die Trennungsmittel (20) angeschlossen sind und Folgendes umfassen:
    - ein Steuerteil (40), das geeignet ist, sich in Abhängigkeit von den Trennungsmitteln (20) zu verlagern;
    - ein Anzeigeorgan (50), das dem Steuerteil (40) zugehörig ist, derart, dass das Anzeigeorgan (50) in Abhängigkeit von der Stellung des Steuerteils (40) anzeigt, ob das Schutzbauteil (10) in Betrieb oder getrennt ist;
    wobei das Steuerteil (40) elastisch zwischen einer ersten Stellung, die einem verbundenen Zustand des Schutzbauteils (10) entspricht, in der das Steuerteil (40) durch die Trennungsmittel (20) elastisch gespannt und an seiner Stellung gehalten wird, und einer zweiten Stellung beweglich gelagert ist, die einem getrennten Zustand des Schutzbauteils (10) entspricht, in der das Steuerteil (40) nicht mehr durch die Trennungsmittel (20) gehalten wird, wobei das Steuerteil (40) und die Trennungsmittel (20) derart angeordnet sind, dass die Trennungsmittel (20) sich bei ihrer Öffnung ausreichend von dem Steuerteil (40) entfernen, um so die freie Verlagerung des Steuerteils (40) freizugeben und zuzulassen
    dadurch gekennzeichnet, dass die Schutzvorrichtung eine Schutzzelle (41) umfasst, die das mindestens eine Schutzbauteil in der Form eines ersten und eines zweiten Schutzbauteils (10) umfasst, die parallel geschaltet und jeweils einem ersten und einem zweiten Trennungsmittel (20) zugehörig sind, wobei das Steuerteil (40) durch einen ersten und einen zweiten Zweig (410, 420) gebildet ist, die derart gegengeschaltet sind, dass das Steuerteil (40) eine Symmetrie in Bezug zu der Ebene (S) aufweist, die die Trennung zwischen den zwei Schutzbauteilen (10) definiert.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Steuerteil (40) mindestens einen sogenannten aktiven Abschnitt (40A) umfasst, der gegen die Trennungsmittel (20) in ihrer geschlossenen Stellung in Anlage gelangt, wobei der Zusammenbau derart ist, dass der aktive Abschnitt (40A) geeignet ist, sich entlang einer Richtung (D2) zu verlagern, die im Wesentlichen senkrecht zur Hauptverlagerungsrichtung (D1) der Trennungsmittel (20) ist.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Zweige (410, 420) des Steuerteils (40) derart zusammengebaut sind, dass sie eine Nadel (400) bilden, die in ihrer Spannungsstellung derart zwischen dem ersten und dem zweiten Trennungsmittel (20) zwischengestellt ist, dass diese letzteren in der geschlossenen Stellung eine seitliche äußere Spannung auf die Zweige (410, 420) ausüben, die dazu neigt, die Nadel (400) zu schließen.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Nadel (400) eine Zwischenstellung, in der der erste Zweig (410) seitlich durch das erste Trennungsmittel (20) gespannt wird und der zweite Zweig vom zweiten Trennungsmittel (20) freigegeben ist, wodurch angezeigt wird, das ein einziges Schutzbauteil (10) getrennt ist, und eine Endstellung einnehmen kann, in der die zwei Zweige (410, 420) von den Trennungsmitteln (20) freigegeben sind, wodurch angezeigt wird, dass beide Schutzbauteile (10) getrennt sind.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jedes Trennungsmittel (20) durch eine Trennlamelle (21) gebildet ist, die an einen der Pole des entsprechenden Schutzbauteils (10) geschweißt ist und geeignet ist, sich nach dem Schmelzen der Schweißung von der geschlossenen Stellung in Richtung der geöffneten Stellung zu verlagern, wodurch der Zweig (41) des zugehörigen Steuerteils (40) freigegeben wird.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Anzeigemittel (30) in einem Gehäuse (60) angebracht sind.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Anzeigeorgan (50) durch mindestens eine Tafel (51) gebildet ist, die auf dem Steuerteil (40) angebracht ist und derart angeordnet ist, dass sie sich gegenüber einem Fenster (61) verlagert, das im Gehäuse (60) eingerichtet ist, um in Abhängigkeit von der Stellung des Steuerteils (40) ein unterschiedliches Aussehen durch das Fenster (61) zu erhalten.
  8. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der aktive Abschnitt (40A) des Steuerteils (40) Auslösungsmittel (80) umfasst, die gestaltet sind, um beim Öffnen der Trennungsmittel (20) seine Freigabe zu erleichtern.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Auslösungsmittel (80) durch eine oder mehrere Krümmungen (81) gebildet sind, die derart in dem aktiven Abschnitt (40A) gebildet ist/sind, dass dieser letztere eine schräge Stirnseite (82) aufweist, die die Auslösung des Steuerteils (40) erleichtert.
  10. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jedes Schutzbauteil (10) durch einen Varistor gebildet ist.
EP05757170.5A 2004-04-19 2005-04-18 Überspannungs-schutzeinrichtung mit einem verbesserten display-system Not-in-force EP1747564B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0404099A FR2869155B1 (fr) 2004-04-19 2004-04-19 Dispositif de protection contre les surtensions avec systeme de visualisation ameliore
PCT/FR2005/000928 WO2005109452A1 (fr) 2004-04-19 2005-04-18 Dispositif de protection contre les surtensions avec systeme de visualisation ameliore

Publications (2)

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EP1747564A1 EP1747564A1 (de) 2007-01-31
EP1747564B1 true EP1747564B1 (de) 2013-07-17

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EP (1) EP1747564B1 (de)
ES (1) ES2430195T3 (de)
FR (1) FR2869155B1 (de)
WO (1) WO2005109452A1 (de)

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Publication number Priority date Publication date Assignee Title
CN110556220B (zh) * 2018-06-04 2022-08-26 成都铁达电子股份有限公司 一种陶瓷芯片及低限制电压压敏电阻器
FR3107780B1 (fr) 2020-02-27 2022-03-11 Legrand France Appareil électrique contre les surtensions transitoires et un dispositif de varistances à détection d’emballement thermique
FR3107781B1 (fr) 2020-02-27 2023-06-30 Legrand France Appareil électrique contre les surtensions transitoires et un dispositif de varistances à détection d’emballement thermique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177452A2 (de) * 1984-10-04 1986-04-09 Von Arx Ag Vorschub-Bremsvorrichtung für ein Flächenreinigungsgerät
EP1077452A2 (de) * 1999-08-17 2001-02-21 FERRAZ Société Anonyme Schaltungsschutzeinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062989A (en) * 1957-05-22 1962-11-06 Mc Graw Edison Co Capacitor protective circuit and apparatus
FR2727806A1 (fr) * 1994-12-05 1996-06-07 Soule Sa Dispositif de protection a l'encontre de surtensions transitoires a base de varistances et deconnecteurs thermiques
AT406207B (de) * 1997-09-30 2000-03-27 Felten & Guilleaume Ag Oester Steckbarer überspannungsableiter
FR2783365B1 (fr) * 1998-09-15 2000-12-01 Soule Materiel Electr Dispositif de protection d'installations electriques contre les perturbations de l'alimentation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177452A2 (de) * 1984-10-04 1986-04-09 Von Arx Ag Vorschub-Bremsvorrichtung für ein Flächenreinigungsgerät
EP1077452A2 (de) * 1999-08-17 2001-02-21 FERRAZ Société Anonyme Schaltungsschutzeinrichtung

Also Published As

Publication number Publication date
ES2430195T3 (es) 2013-11-19
EP1747564A1 (de) 2007-01-31
WO2005109452A1 (fr) 2005-11-17
FR2869155B1 (fr) 2006-06-02
FR2869155A1 (fr) 2005-10-21

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