EP2602805B1 - Boîtier pour dispositif de protection contre les surtensions et dispositif de protection contre les surtensions associées - Google Patents

Boîtier pour dispositif de protection contre les surtensions et dispositif de protection contre les surtensions associées Download PDF

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Publication number
EP2602805B1
EP2602805B1 EP12195643.7A EP12195643A EP2602805B1 EP 2602805 B1 EP2602805 B1 EP 2602805B1 EP 12195643 A EP12195643 A EP 12195643A EP 2602805 B1 EP2602805 B1 EP 2602805B1
Authority
EP
European Patent Office
Prior art keywords
overvoltage protection
housing
protection component
locking element
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12195643.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2602805A1 (fr
Inventor
Thomas Goigoux
Pierre Mazabraud
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SNC
Legrand France SA
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 Legrand SNC, Legrand France SA filed Critical Legrand SNC
Priority to PL12195643T priority Critical patent/PL2602805T3/pl
Priority to SI201230798A priority patent/SI2602805T1/sl
Publication of EP2602805A1 publication Critical patent/EP2602805A1/fr
Application granted granted Critical
Publication of EP2602805B1 publication Critical patent/EP2602805B1/fr
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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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • 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
    • 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
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
    • 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

Definitions

  • the present invention relates to the general technical field of equipment protection devices or electrical installations against electrical disturbances, in particular against transient overvoltages.
  • surge protection devices are known and common. Such devices generally use a varistor as an overvoltage protection component. Indeed, the varistor closes the overvoltage from a predetermined value and limits the propagation of the surge on the power grid.
  • thermal disconnection consists of disconnecting the surge protection device comprising the defective varistor, beyond a predetermined critical temperature.
  • Such a device has disadvantages. Indeed, the bimetal, whose nature changes during the temperature rise, is subjected to high mechanical stress, since it is also the actuating element that allows the opening of the circuit. Such a device thus sees its reduced reliability as a result of vibrations or shocks suffered by the device. Moreover, the bimetal can see its temperature detection influenced by the current passing through the thermal disconnection. It is therefore necessary to size the detection means so that the flow of current does not influence the disconnector.
  • the document FR2925216 discloses an overvoltage protection device comprising a protection component against overvoltages in thermal connection with a thermosensitive member capable of deforming in dependence on its temperature, and a mechanical member intended to cooperate with the thermosensitive member and adapted to cooperate with a device for tripping an electrical breaking device.
  • a protection component against overvoltages in thermal connection with a thermosensitive member capable of deforming in dependence on its temperature
  • a mechanical member intended to cooperate with the thermosensitive member and adapted to cooperate with a device for tripping an electrical breaking device.
  • This overvoltage protection device is in mechanical connection with an electrical switching device, so there are two boxes each having specific functions: on one side detection of the critical temperature of malfunction of the overvoltage protection component, and on the other side the connection of the defective protection device is cut off from the rest of the electrical installation.
  • Such a device has the disadvantage of requiring the use of two boxes, which generates manufacturing costs and a loss of space in the electrical installation. Furthermore, the protection device and the cutoff device are in series on the current path.
  • the solutions require that the locking element is an electrical conductor, for example metallic with known mechanical deformation properties, and that it is capable of transforming a thermal effect into a mechanical force.
  • DE202009013505U1 discloses a surge protection device housing according to the preamble of claim 1.
  • overvoltage protection devices which have a thermal disconnection time which is too long, because the function of detecting the heating of the varistor is too far from the varistor, the reaction time of the The heating element is therefore not weak enough to ensure fast disconnection.
  • the locking element not being part of the current path in which the switch participates, it is possible to position the locking element so that it reacts quickly to the release of heat, to use a material specifically adapted to this locking function and not necessarily conductive.
  • the locking element releases the switch which goes into the open position.
  • Such a case for protection device for overvoltages has the advantage of offering a device having a fast thermal disconnection. Indeed, the locking element is in contact with the overvoltage protection component and therefore closer to the heating.
  • this housing whose mechanical switch, which has the function of disconnecting the housing comprising the defective overvoltage protection component, is different from the locking element, whose function is the opening of the circuit.
  • the mechanical stresses experienced by the locking element are thus reduced, and its reliability is improved.
  • the fact that all the elements, allowing the protection against overvoltages and the disconnection of the circuit comprising the surge protection element, are grouped together in the same housing, allows to gain space in the equipment or electrical installation to protect.
  • an overvoltage protection device comprises a surge protection housing and a base fixed on a rail such that the two electrical connection elements of the housing are electrically connected to the base during racking the case.
  • the overvoltage protection device comprises a plurality of overvoltage protection boxes and a plurality of bases fixed on a rail such that the two electrical connection elements of each of said boxes are connected to a terminal. respective base during the racking of the respective case.
  • the Figures 1 to 20 represent nine variants of a housing 1 for overvoltage protection device.
  • the temperature of the overvoltage protection component 13 increases in the presence of overvoltages.
  • the accumulation, over time, of overvoltages induces an increase in temperature such that the temperature will exceed a critical threshold.
  • This critical threshold is between 100 ° C. and 240 ° C., and particularly preferably between 120 ° C. and 190 ° C.
  • This threshold corresponds to the temperature from which the reliability of the overvoltage protection component is no longer ensured. This temperature is determined in accordance with the safety requirements imposed by the applicable safety standards.
  • the locking element 15, in thermal conduction contact with a bare metal part of an electrode 131 of the overvoltage protection component 13, will melt only under the effect of the heat transmitted by the surge protection component 13.
  • the locking element 15 may be a low temperature solder or a plastic part. This locking element 15 detects the heating of the overvoltage protection component 13, and melts when the critical temperature threshold is reached.
  • the melting of the locking element 15 unlocks the mechanical switch 17.
  • the mechanical switch is in closed position.
  • the casing 1 for overvoltage protection device is electrically connected to the device to be protected.
  • the fusion of the locking element releases the mechanical switch, whose movement places it in the open position.
  • the housing 1 is no longer electrically connected to the device to be protected.
  • FIGS. 1, 2 , 3 and 4 illustrate a first embodiment of a housing 1 for overvoltage protection device.
  • the figures 1 and 3 illustrate the housing 1 comprising such a mechanical switch 17, in the case where the temperature of the overvoltage protection component 13 is below the critical threshold and the mechanical switch is in the closed position.
  • the drive member 175 and the first spring 181 maintain in compression the insulating piece 173 away from the two conductive strips 171 and 172 which are in contact.
  • the moving part is held in a position called normal operation by the locking element 15 and in compression by a second spring 183.
  • the figures 2 and 4 illustrate the housing 1 comprising such a mechanical switch 17, in the case where the temperature of the overvoltage protection component 13 is greater than the critical threshold.
  • the locking element 15 has melted under the effect of the rise in temperature of the overvoltage protection component 13, and the moving part, under the effect of the second spring 183 moves in translation and releases the notch 177 connecting it to the trainer element 175.
  • This displacement of the drive element 175 causes a displacement in translation of the insulating part 173, integral with the drive element 175, which is placed between the two conductive blades 171 and 172.
  • FIGS. 5 and 6 illustrate a second embodiment of a housing 1 for overvoltage protection device.
  • the moving part is a leaf spring 1791.
  • the locking member 15 and the switch 17 are electrically independent and thus the locking member may not be electrically conductive.
  • the figure 5 illustrates the housing 1 comprising such a mechanical switch 17, in the case where the temperature of the overvoltage protection component 13 is below the critical threshold and the mechanical switch is in the closed position.
  • the leaf spring 1791 is held in a horizontal position, called normal operation, by the locking member 15 and a lug 180, in which one end of the leaf spring 1791 is locked.
  • the entrainment element connected to the moving part 1791, keeps the insulating part 173 away from the two conductive strips 171 and 172, which are in contact.
  • the figure 6 illustrates the housing 1 comprising such a mechanical switch 17, in the case where the temperature of the overvoltage protection component 13 is greater than the critical threshold.
  • the locking element 15 has melted under the effect of the temperature rise of the overvoltage protection component 13, and the spring blade 1791 is no longer maintained in a horizontal position under the pin 180 by the lock 15. It rotates and moves to a vertical position.
  • This displacement of the drive element 175 causes a displacement in translation of the insulating part 173, integral with the drive element 175, which is placed between the two conductive blades 171 and 172.
  • the Figures 7 and 8 illustrate a third embodiment of a housing 1 for overvoltage protection device.
  • one of the two conductive blades 172 is a spring blade and the moving part is a lever with a bent arm 1792.
  • the locking member 15 and the switch 17 are electrically independent and thus the locking member may not be electrically conductive.
  • the figure 7 illustrates the case 1 comprising such a mechanical switch, in the case where the temperature of the overvoltage protection component 13 is below the critical threshold and the mechanical switch is in the closed position.
  • the curved lever 1792 is held in a position, known as normal operation, by the locking member 15 and by a lug 180, in which one end of the lever arm is locked.
  • the figure 8 illustrates the housing 1 comprising such a mechanical switch, in the case where the temperature of the overvoltage protection component 13 is greater than the critical threshold.
  • the locking element 15 has melted under the effect of the temperature rise of the overvoltage protection component 13, and the curved arm lever 1792 is no longer held under the lug 180 by the locking element 15. It rotates upwards.
  • This displacement of the drive element 175 causes a displacement in translation of the insulating part 173, integral with the drive element 175, which is placed between the two conductive blades 171 and 172.
  • FIG. 9 is illustrated a fourth embodiment of a housing 1 for overvoltage protection device.
  • the locking element 15 maintains the insulating part 173, via the driving element 175, away from the two conductive strips 171 and 172.
  • One of the two conductive blades 172 is a spring blade.
  • FIG. 11 and 12 is illustrated a fifth embodiment of a housing 1 for overvoltage protection device.
  • the locking element 15 maintains the insulating part 173, via the driving element 175, away from the two conductive strips 171 and 172.
  • FIG. 13 and 14 is illustrated a sixth embodiment of a housing 1 for overvoltage protection device.
  • the locking element 15 keeps the moving part 179 provided with a notch 177.
  • the insulating part 173 is kept away from the two conductive strips 171 and 172.
  • One of the two conductive blades 172 is a spring blade.
  • FIG. 15 and 16 is illustrated a seventh embodiment of a housing 1 for overvoltage protection device.
  • the locking element 15 holds the moving part 179 provided with a notch 177.
  • the insulating part 173 is kept away from the two conductive strips 171 and 172.
  • the two blades 171 and 172 conductive are spring blades.
  • FIG. 17 and 18 is illustrated an eighth embodiment of a housing 1 for overvoltage protection device.
  • the locking element 15 holds the moving part 179 provided with a notch 177.
  • the insulating part 173 is kept away from the two conductive strips 171 and 172. spring blade.
  • FIG. 19 and 20 is illustrated a ninth embodiment of a housing 1 for overvoltage protection device.
  • the insulating part 173 is kept away from the two conductive strips 171 and 172.
  • the conductive blade 171 is a spring blade.
  • the invention also relates to a device for protection against overvoltages.
  • the Figures 21 and 22 represent two variants of an overvoltage protection device.
  • connection of the surge protection device is made during the plugging of the surge protection box 1 on the base. This connection is made by electrically connecting the two electrical connection elements and the housing 1 to the base. Thus, the device 2 for overvoltage protection is electrically connected to the equipment or electrical installation to be protected.
  • the breaking of the electrical contact between the conductive blades isolates the overvoltage protection device from the equipment or electrical installation to be protected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Thermally Actuated Switches (AREA)
EP12195643.7A 2011-12-07 2012-12-05 Boîtier pour dispositif de protection contre les surtensions et dispositif de protection contre les surtensions associées Active EP2602805B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL12195643T PL2602805T3 (pl) 2011-12-07 2012-12-05 Obudowa urządzenia zabezpieczającego przed przepięciami i urządzenie zabezpieczające przed takimi przepięciami
SI201230798A SI2602805T1 (sl) 2011-12-07 2012-12-05 Ohišje za napravo za prenapetostno zaščito in ustrezna naprava za prenapetostno zaščito

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1161296A FR2984006B1 (fr) 2011-12-07 2011-12-07 Boitier pour dispositif de protection contre les surtensions et dispositif de protection contre les surtensions associe.

Publications (2)

Publication Number Publication Date
EP2602805A1 EP2602805A1 (fr) 2013-06-12
EP2602805B1 true EP2602805B1 (fr) 2016-11-02

Family

ID=47257708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12195643.7A Active EP2602805B1 (fr) 2011-12-07 2012-12-05 Boîtier pour dispositif de protection contre les surtensions et dispositif de protection contre les surtensions associées

Country Status (8)

Country Link
EP (1) EP2602805B1 (pl)
CN (1) CN103151226B (pl)
BR (1) BR102012031212A2 (pl)
ES (1) ES2607608T3 (pl)
FR (1) FR2984006B1 (pl)
PL (1) PL2602805T3 (pl)
RU (1) RU2623503C2 (pl)
SI (1) SI2602805T1 (pl)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014008366B3 (de) * 2014-06-04 2015-10-22 Dehn + Söhne Gmbh + Co. Kg Vorrichtung zum thermischen Auslösen oder Abtrennen eines Überspannungsschutzgerätes
CZ309285B6 (cs) * 2014-06-27 2022-07-20 KIWA sk, s.r.o Zařízení pro přepěťovou ochranu
DE102015000329B3 (de) * 2015-01-09 2016-05-19 DEHN + SÖHNE GmbH + Co. KG. Überspannungsschutzgerät mit im thermischen Überlastfall aktivierter mechanischer Abtrennvorrichtung
BE1025343B1 (de) * 2017-06-22 2019-02-04 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzgerät mit Anschlusselementen und Verfahren zur Herstellung desselben
CN108429235B (zh) * 2018-04-28 2024-02-02 深圳市海鹏信电子股份有限公司 一种电涌保护装置
DE102019110745B3 (de) 2019-04-25 2020-10-08 Dehn Se + Co Kg Überspannungsschutzvorrichtung sowie modulares Überspannungsschutzsystem
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
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
DE202020000983U1 (de) * 2020-03-11 2020-03-26 Abn Gmbh Aufnahmevorrichtung für eine Überspannungsschutz-Einheit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001632A1 (de) * 2000-01-17 2001-08-02 Harting Automotive Gmbh & Co Leitungsunterbrecher
FR2848353B1 (fr) 2002-12-10 2005-06-17 Soule Protection Surtensions Dispositif de protection contre des surtensions
WO2006040418A1 (fr) * 2004-10-08 2006-04-20 Abb France Dispositif de protection contre les surtensions pourvu de moyens de cisaillement d’arc et procede correspondant
FR2877154B1 (fr) * 2004-10-22 2006-12-22 Legrand Sa Dispositif perfectionne de protection d'appareils electriques contre des surtensions
DE102006037551B4 (de) * 2006-02-13 2012-03-22 Dehn + Söhne Gmbh + Co. Kg Überspannungsableiter mit mindestens einem Ableitelement, beispielsweise einem Varistor
FR2897989B1 (fr) * 2006-02-24 2008-05-09 Soule Prot Surtensions Sa Dispositif de protection contre les surtensions avec systeme de visualisation simplifie et procede de fabrication correspondant
DE102007006617B3 (de) * 2007-02-06 2008-09-04 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
FR2925216B1 (fr) 2007-12-18 2010-04-23 Abb France Dispositif de protection contre les surtensions comportant un auxiliaire de deconnexion
DE102008061323B3 (de) * 2008-12-11 2010-06-24 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
CN201450331U (zh) * 2009-07-27 2010-05-05 佛山市浦斯电子有限公司 一种具有热保护装置的电涌保护器

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
FR2984006B1 (fr) 2017-05-12
RU2012152603A (ru) 2014-06-20
CN103151226B (zh) 2016-02-03
PL2602805T3 (pl) 2017-08-31
FR2984006A1 (fr) 2013-06-14
CN103151226A (zh) 2013-06-12
EP2602805A1 (fr) 2013-06-12
BR102012031212A2 (pt) 2015-01-27
ES2607608T3 (es) 2017-04-03
RU2623503C2 (ru) 2017-06-27
SI2602805T1 (sl) 2017-02-28

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