EP3371860B1 - Dispositif de protection contre les surtensions pour terminaux électriques - Google Patents

Dispositif de protection contre les surtensions pour terminaux électriques Download PDF

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Publication number
EP3371860B1
EP3371860B1 EP16787430.4A EP16787430A EP3371860B1 EP 3371860 B1 EP3371860 B1 EP 3371860B1 EP 16787430 A EP16787430 A EP 16787430A EP 3371860 B1 EP3371860 B1 EP 3371860B1
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EP
European Patent Office
Prior art keywords
connection
overvoltage protection
protection device
conductor
control signal
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
EP16787430.4A
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German (de)
English (en)
Other versions
EP3371860A1 (fr
Inventor
Thomas Gottschalk
Dietmar Duerr
Tobias Kerschensteiner
Edmund ZÄUNER
Stefan SCHÖN
Manuel Scharf
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.)
Dehn SE and Co KG
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Dehn and Soehne GmbH and Co KG
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Publication of EP3371860A1 publication Critical patent/EP3371860A1/fr
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Classifications

    • 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
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T15/00—Circuits specially adapted for spark gaps, e.g. ignition circuits
    • 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
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel

Definitions

  • the invention relates to an overvoltage protection device for electrical terminals which, in addition to an at least one-phase network connection, have at least one control signal connection, wherein a change in the operating state of the respective terminal can be specified via the control signal connection.
  • a surge arrester arrangement for terminal devices is previously known, with specific reference being made there to LED lights in street lighting. Accordingly, after the DE 20 2011 051 074 U1 Surge arresters are used to protect LED lights for street lighting from voltage peaks from the street lighting network, which are caused by ballasts, for example. In such known surge arresters, an electrical functional unit is used to divert an overvoltage, for example to a neutral conductor. Since the surge arresters have to be disconnected during maintenance work, installation in a lamp head is not practical and installation in a fuse box is preferable, as is the case with the DE 20 2011 051 074 U1 shows.
  • the surge arrester there has an insulating component, by means of which the actual functional unit for surge protection is electrically isolated at least in sections.
  • the surge arrester itself is completely dimensioned so that it can be arranged within the populated street lighting fuse boxes.
  • the aforementioned insulating component is intended to completely electrically isolate the functional unit of the surge arrester and, at the same time, to stabilize it mechanically.
  • the electrical functional unit is at least partially cast in an insulating material.
  • a plastic in particular a synthetic resin.
  • the final shape of the Surge arrester determined by the mold. The final shape of the surge arrester should be adapted to the conditions in a special type of fuse box.
  • a marker in particular a foil marker, is used to signal the state of the surge arrester, which visually shows the user that the temperature has been exceeded and thus that the surge arrester has been destroyed.
  • overvoltage protection device for electrical terminal devices, the issue here being terminal devices which in addition to an at least one-phase network connection also have a control signal connection. It has shown that overvoltage protection is only inadequate in the area of the grid connection, since impermissible voltage loads can also be coupled in or entered via a control line, with the result that the functionality of a corresponding terminal device can be restricted or it can be completely destroyed.
  • the overvoltage protection device for electrical end devices which, in addition to an at least one-phase network connection, have at least one control signal connection, wherein a change in the operating state of the respective end device can be specified via the control signal connection, is implemented in such a way that initially an arrangement of overvoltage arresters, in particular varistors, is provided, each of which is assigned a thermal separation device and an optical function display.
  • the thermal disconnection device is designed so that if the surge arrester used, in particular a varistor, is overloaded, electrical disconnection takes place in the sense of triggering a fuse.
  • the overvoltage protection device is designed in the immediate vicinity of the electrical terminal, in particular in a connection box of the same.
  • the overvoltage protection device is located within an electrically conductive mast, with the gas discharge tube being connected between the network connection and the conductive mast when it is fed from a TNC network with a PEN conductor, which is at the same time a protective conductor and neutral conductor.
  • the above measures ensure that no contact voltage problems occur, even in the case of network outflows and poor earthing conditions, thus ensuring the necessary personal safety.
  • the respective optical function display has a series connection of a first resistor and a light-emitting diode, this series connection being arranged in parallel to the thermal separation device.
  • the series circuit also includes a second resistor which is connected to the neutral conductor.
  • the overvoltage protection device according to the invention is designed to be exchangeable. This means that if the device is destroyed as a result of an overvoltage event, it can be exchanged if necessary and replaced by a functional device.
  • the overvoltage protection device has connection cables for detachable connection to known terminals, these connection cables being led out on a preferred side of a housing, the housing enclosing all relevant electrical components of the overvoltage protection device in an insulating manner.
  • the overvoltage protection device can have an integrated overcurrent fuse in the grid connection path.
  • optical function displays are designed in such a way that they are suitable for separate signaling of overvoltage events of the network connection or the control signal connection.
  • the overvoltage protection device assumes a single-phase low-voltage grid connection L.
  • the connection L 'leads to the consumer, for example to a mobile radio station, a lamp arrangement in a street lighting system or the like.
  • Another input Lsteu represents a control input for switching street lighting on and off, for example.
  • N is the neutral conductor input and PE is the protective conductor input.
  • a surge arrester designed as a varistor V, which has a thermal disconnection device ATV, is connected to the network connection L, connected between L and N.
  • the thermal disconnection device is opened in the event of an overload, this overload leading to such heating of the varistor V that, for example, a material connection, ie a solder, melts and a correspondingly spring-loaded bracket moves from a closed to an open position (not shown). .
  • a series circuit comprising a resistor R1 and a light-emitting diode D is located parallel to the thermal separation device ATV.
  • This series circuit also includes a resistor R2 which is connected to the neutral conductor N.
  • a further diode DAP is connected in anti-parallel to the light-emitting diode D.
  • the display devices With the aid of the LEDs D in the protective circuit of the network connection LL 'and in the protective circuit of the control signal connection Lsteu or Lst, error states and overvoltage events can be signaled separately.
  • the Fig. 2 shows, all relevant electrical components of the overvoltage protection device are in accordance with the circuit diagram Fig. 1 arranged on a printed circuit board LP.
  • the circuit board LP comprises the varistors V with a correspondingly integrated thermal disconnection device ATV, the light-emitting diodes D and the gas discharge tube G and the corresponding resistors R1 and R2.
  • the corresponding connections in the form of connection cables AK are routed from the printed circuit board.
  • the corresponding prefabricated assembly according to Fig. 3 is surrounded by a compact housing KG, the housing KG having openings or breakthroughs DB so that the corresponding states of the light-emitting diodes D can be recognized.
  • FIG. 4 An exemplary arrangement of a compactly designed overvoltage protection device KÜG within a connection box HAK shows Fig. 4 , whereby screw fuses Si known per se can still be accommodated in the connection box HAK.
  • connection cables AK With the help of the connection cables AK there is the possibility of simply plugging the correspondingly stripped ends of these connection cables AK into known spring terminals in order to produce the desired electrical connections
  • Fig. 5 and 6th show the basic possibilities of electrical connection of the overvoltage protection device KÜG with the overvoltage protection means SPD contained therein, which are only shown symbolically in the respective block diagram and without the optical function display.
  • a mast connection is also established between the PE connection and the KÜG overvoltage protection device.
  • overvoltage protection device KÜG When the overvoltage protection device KÜG is arranged in a TT network, master grounding is assumed, with the PE connection of the overvoltage protection device KÜG being connected to the electrically conductive mast, as is also the case with the design for a TNC network according to Fig. 6 the case is.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (5)

  1. Moyen de protection contre les surtensions pour des terminaux électriques qui, en plus d'un raccordement au réseau basse tension au moins monophasé (L), disposent d'au moins un raccord de signal de commande (Lst) pour la mise en marche et l'arrêt d'un agencement de lampes dans un système d'éclairage public, un changement de l'état de fonctionnement du terminal respectif ou d'un consommateur étant apte à être spécifié au moyen du raccord de signal de commande (Lst), composé d'un agencement de varistances (V) auxquelles sont respectivement attribués un dispositif de déconnexion thermique (ATV) et un indicateur de fonctionnement optique (D), et d'au moins un éclateur à gaz (G) connecté entre un conducteur neutre (N) et un conducteur de protection (PE), une première varistance (V) avec un dispositif de déconnexion thermique (ATV) étant en outre prévue entre le raccordement au réseau (L) et un conducteur neutre (N), et une deuxième varistance (V) avec un dispositif de déconnexion thermique (ATV) étant prévue entre le raccord de signal de commande (Lst) et le conducteur neutre (N), le moyen de protection contre les surtensions (KÜG) étant apte à être agencé à proximité immédiate du terminal électrique ou du consommateur dans une boîte de branchement (HAK) qui se trouve à l'intérieur d'un pylône conducteur, les indicateurs de fonctionnement optiques (D) étant prévus pour une signalisation séparée d'évènements de surtension du raccordement au réseau (L) et du raccord de signal de commande (Lst), l'éclateur à gaz (G), lors d'une alimentation à partir d'un réseau TNC comprenant un conducteur PEN qui est en même temps un conducteur de protection (PE) et un conducteur neutre (N), étant connecté entre le conducteur PEN et le pylône conducteur pour former une compensation de potentiel.
  2. Moyen de protection contre les surtensions selon la revendication 1,
    caractérisé en ce que
    l'indicateur de fonctionnement optique (D) présente un couplage en série d'une première résistance (R1) et d'une DEL (D) agencée en parallèle avec le dispositif de déconnexion thermique (ATV), le couplage en série présentant une deuxième résistance (R2) qui est reliée au conducteur neutre (N).
  3. Moyen de protection contre les surtensions selon la revendication 2,
    caractérisé en ce que
    celui-ci présente des câbles de raccordement (AK) pour une liaison détachable avec des bornes connues en soi, les câbles de raccordement (AK) étant tous sortis d'un côté préféré d'un boîtier (KG) qui loge les composants électriques (SPD) du moyen de manière isolante.
  4. Moyen de protection contre les surtensions selon l'une des revendications précédentes,
    caractérisé en ce que
    il présente au moins un fusible de sûreté dans le trajet de raccordement au réseau.
  5. Moyen de protection contre les surtensions selon la revendication 2,
    caractérisé en ce que
    une diode (DAP) est couplée de manière antiparallèle à la DEL (D) respective.
EP16787430.4A 2015-11-03 2016-10-25 Dispositif de protection contre les surtensions pour terminaux électriques Active EP3371860B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015014162.7A DE102015014162A1 (de) 2015-11-03 2015-11-03 Überspannungsschutzeinrichtung für elektrische Endgeräte
PCT/EP2016/075667 WO2017076692A1 (fr) 2015-11-03 2016-10-25 Dispositif de protection contre les surtensions pour terminaux électriques

Publications (2)

Publication Number Publication Date
EP3371860A1 EP3371860A1 (fr) 2018-09-12
EP3371860B1 true EP3371860B1 (fr) 2021-04-07

Family

ID=57206275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16787430.4A Active EP3371860B1 (fr) 2015-11-03 2016-10-25 Dispositif de protection contre les surtensions pour terminaux électriques

Country Status (3)

Country Link
EP (1) EP3371860B1 (fr)
DE (1) DE102015014162A1 (fr)
WO (1) WO2017076692A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4866560A (en) * 1988-04-22 1989-09-12 Allina Edward F Safeguarding electrical transient surge protection
DE4124321C2 (de) * 1991-07-23 2003-10-09 Dehn & Soehne Anordnung zur Ableitung von Überspannungen
AT404650B (de) * 1996-05-07 1999-01-25 Felten & Guilleaume Ag Oester Entkoppelglied für überspannungsschutz-schaltung
FR2871932B1 (fr) * 2004-06-18 2006-08-04 Schneider Electric Ind Sas Dispositif de protection contre les surtensions
IN2014CN00421A (fr) * 2011-07-13 2015-04-03 Koninkl Philips Nv
DE202011051074U1 (de) 2011-08-24 2011-11-16 Tyco Electronics Raychem Gmbh Überspannungsableiter für LED-Leuchten in der Straßenbeleuchtung, Straßenbeleuchtungs-Sicherungskasten mit Überspannungsableiter für LED-Leuchten und Nachrüstsatz für Straßenbeleuchtungs-Sicherungskasten umfassend einen Überspannungsableiter für LED-Leuchten
CN202616768U (zh) * 2012-06-07 2012-12-19 厦门赛尔特电子有限公司 一种led照明电源的电涌保护装置
CN203761658U (zh) * 2014-03-31 2014-08-06 厦门赛尔特电子有限公司 一种具有浪涌防护功能的光控器

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3371860A1 (fr) 2018-09-12
DE102015014162A1 (de) 2017-05-04
WO2017076692A1 (fr) 2017-05-11

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