EP0024583B1 - Dispositif de dérivation de surtensions - Google Patents

Dispositif de dérivation de surtensions Download PDF

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Publication number
EP0024583B1
EP0024583B1 EP80104592A EP80104592A EP0024583B1 EP 0024583 B1 EP0024583 B1 EP 0024583B1 EP 80104592 A EP80104592 A EP 80104592A EP 80104592 A EP80104592 A EP 80104592A EP 0024583 B1 EP0024583 B1 EP 0024583B1
Authority
EP
European Patent Office
Prior art keywords
electrodes
surge arrester
arc discharge
chamber
arrester according
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.)
Expired
Application number
EP80104592A
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German (de)
English (en)
Other versions
EP0024583A1 (fr
Inventor
Peter Dr.-Ing. Hasse
Johannes Prof. Dr.-Ing. Wiesinger
Erich Dr.-Ing. Pivit
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.)
Bosch Telecom GmbH
Original Assignee
ANT Nachrichtentechnik 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 ANT Nachrichtentechnik GmbH filed Critical ANT Nachrichtentechnik GmbH
Publication of EP0024583A1 publication Critical patent/EP0024583A1/fr
Application granted granted Critical
Publication of EP0024583B1 publication Critical patent/EP0024583B1/fr
Expired legal-status Critical Current

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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
    • 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 a surge arrester, consisting of an air spark gap according to the preamble of claim 1.
  • a three-electrode vacuum spark gap is described in US Pat. No. 3,811,070, which is triggered by laser initiation. This arrangement provided with a shield of the spacer is also unusable for the application according to the invention.
  • spark gaps described in the article "Protection of electronic and communications systems by means of spark gaps" from bark-Elektronik 4-1979, pp. 127 to 130, are mostly two- or three-electrode spark gaps with a hermetically sealed gas filling. Such spark gaps are conditionally suitable for protecting telecommunications cables or receiving antennas against lightning flashovers, but they only suffice for operational insulation, but not the increased requirements for protective insulation.
  • an overvoltage protection for telecommunication lines which consists of a spark gap between two carbon electrodes, with a region being provided around the area of the arc discharge, which serves as an outlet for particles from the electrodes in the Break out the arc gap.
  • This spark gap also only suffices for operational insulation and, moreover, has a very limited service life.
  • the object of the invention was therefore to provide an uncomplicated surge arrester of the type mentioned at the outset, whose insulation resistance, its dielectric strength and its reliability in the non-ignited state are equivalent to the protective insulation in accordance with VDE regulation 0845, the response voltage of which is lower than the dielectric strength of the protective insulation which was ignited Condition the voltage is limited to harmless values and which can take up the full lightning current several times without its functions being impaired to such an extent that the above-mentioned requirements are no longer met, with the labyrinth steaming the spacer relevant for the protective insulation with electrically conductive ones Plasma particles and thus a decrease in its insulation resistance is prevented or inhibited.
  • the surge arrester according to the invention has the advantages that high leakage currents can be dissipated through it, that there is high dielectric strength, high reliability and high insulation resistance in the non-ignited state and that these properties are retained even after many strong lightning loads.
  • the surge arrester thus fulfills the basic requirements for protective insulation.
  • FIG. 1 shows an advantageous embodiment of the invention, namely a rotationally symmetrical arrangement of the perforated disk-shaped electrode 1 and the fully cylindrical electrode 2 arranged underneath with a chamfered inner or outer edge 8. Between these two phase surfaces is the area of the arc discharge which, in the non-ignited state, , is preferably air-insulated.
  • the spacer 4 between the outer edge of the disk-shaped lower extension of the electrode 2 and the outer edge of the electrode 1 is far from the area of the arc discharge.
  • the gases under pressure that arise during arc discharge can escape upwards into the open. However, it cannot be avoided that a smaller part of the gases is pressed into the chamber 5 formed by the electrodes and spacers.
  • This chamber is labyrinthine in such a way that an artificial extension of the path of the gases to the spacer and cooling takes place.
  • This has the advantage that the evaporation of the inner surface of the spacer by metal particles torn out of the electrodes during arc discharge is prevented or can be carried out very slightly, which is an essential prerequisite for permanent and unrestrictedly effective protective insulation.
  • the cooling is carried out by the heat-dissipating metal walls of the labyrinth, which are insulated on the electrodes 1 and 2 in order to prevent the arc discharge from spreading to the labyrinth area (6, 7).
  • Such a labyrinth arrangement makes it possible for the gases generated during the arc discharge to be deposited on the labyrinth walls for the most part, so that the insulation value of the spacer and thus the spark gap does not deteriorate significantly even after many heavy lightning current stresses.
  • a suitable electrode material for example tungsten copper, which has a high resistance to burnout, the wear can advantageously be kept very low.
  • the arc can be stable in the air gap provided for this purpose and thus also counteracting vaporization of the spacer insulator.
  • surge arresters that were built according to the teaching of the present invention that, after an accumulated load, which corresponds to about a thousand statistically averaged flashes, but also includes above-average lightning current stresses, they are still fully functional and have an insulation resistance of> 1010Q. A fusion of the electrodes or even only slight approaches to it cannot be determined.
  • the right half of Figure 2 shows another embodiment of the invention.
  • the lower electrode 2 projects with its end face 9 and its outer lateral surface 10 far into the opening of the hollow cylindrical electrode 1, so that the arc relief in region 3 can unfold between the opposite parts of the cylindrical lateral surfaces 10.
  • the labyrinth 5 is on the one hand from the phase surface 8, from the end face 9, from the outer circumferential surface and from the lower part of the disc-shaped extension of the electrode 1 adjoining the upper end of the hollow cylinder, and from metal walls 7, which are formed on a disc-shaped electrode 2 enclosing insulating body 6a are attached, and formed by the outwardly delimiting spacer 4.
  • FIG. 2 shows the cross section through another surge arrester according to the invention, in which the end faces 9 of the two cylindrical electrodes 1 and 2 enclose the area of the arc discharge.
  • This arrangement keeps the discharge particularly stable, so that the spacer 4 can be vaporized even less.
  • the well-formed labyrinth 5 consists of three chambers, which are comprised of three metal walls 7, a disk-shaped insulating piece 6a surrounding the electrode 2, to which two of the metal walls 7 are fastened, and an insulating piece 6, with which the third metal wall is attached to the upper electrode 1 is attached to be formed.

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  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (6)

1. Eclateur-déchargeur à symétrie de révolution, constitué par un éclateur avec espaceur (4), établi en matière isolante, pour les électrodes (1, 2) et une chambre (5) communiquant avec la zone de la décharge en arc (3) et dont les parois sont constituée par les deux électrodes (1, 2) et l'espaceur (4), la chambre (5) étant conformée de telle manière que les gaz qui prennent naissance à la suite de la décharge en arc sont déviés par un labyrinthe sur leur trajet vers l'espaceur (4), caractérisé en ce que l'une (2) des électrodes est constituée par un cylindre plein, tandis que l'autre électrode (1) est conformée en disque présentant une forure essentiellement centrale qui constitue, dans la zone (3) de la décharge en arc, un orifice d'échappement, à l'atmosphère pour le gaz à haute température, qui s'accumule dans la chambre (5) en raison de la suppression.
2. Eclateur-déchargeur suivant la revendication 1, caractérisé en ce que la chambre (5) présente des parois (7, 9, 10) bonnes conductrices de chaleur.
3. Eclateur-déchargeur suivant la revendication 2, caractérisé en ce que les parois consistent en parois métalliques (7) isolées par rapport aux électrodes (1, 2) et fixées à des pièces isolantes (6).
4. Eclateur-déchargeur suivant une quelconque des revendications précédentes, caractérisé en ce que les électrodes (1, 2) présentent des arêtes biseautées (surface de biseau 8) entre lesquelles est située principalement la zone (3) de la décharge en arc.
5. Eclateur-déchargeur suivant une quelconque des revendications précédentes, caractérisé en ce que la zone (3) de la décharge en arc est située principalement entre les faces en bout (9) ou les nappes latérales (10), opposées entre elles.
6. Eclateur-déchargeur suivant une quelconque des revendications précédentes, caractérisé par des électrodes (1, 2) en alliages métalliques offrant une résistance élevée à l'érosion.
EP80104592A 1979-08-24 1980-08-04 Dispositif de dérivation de surtensions Expired EP0024583B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2934237 1979-08-24
DE2934237A DE2934237C2 (de) 1979-08-24 1979-08-24 Überspannungsableiter

Publications (2)

Publication Number Publication Date
EP0024583A1 EP0024583A1 (fr) 1981-03-11
EP0024583B1 true EP0024583B1 (fr) 1984-05-02

Family

ID=6079188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104592A Expired EP0024583B1 (fr) 1979-08-24 1980-08-04 Dispositif de dérivation de surtensions

Country Status (5)

Country Link
US (1) US4345293A (fr)
EP (1) EP0024583B1 (fr)
CA (1) CA1161106A (fr)
DE (1) DE2934237C2 (fr)
DK (1) DK155396C (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934235A1 (de) * 1979-08-24 1981-03-26 Ant Nachrichtentechnik Gmbh, 71522 Backnang Netzanschluss mit ueberspannungsableitern
EP0229303A1 (fr) * 1985-12-18 1987-07-22 Cerberus Ag Eclateur, en particulier pour application de prééclateur de bougie d'allumage pour moteur à combustion interne
DE3763733D1 (de) * 1986-04-22 1990-08-23 Siemens Ag Ueberspannungsableiter.
US4860300A (en) * 1987-06-03 1989-08-22 Lambda Physik Forschungs- Und Entwicklungsgesellschaft Mb Electrode for pulsed gas lasers
DE3910435A1 (de) * 1989-02-25 1990-08-30 Phoenix Elekt Ueberspannungsschutzgeraet
DE19506057B4 (de) * 1995-02-22 2004-07-22 Dehn + Söhne GmbH + Co KG Löschfunkenstreckenanordnung
DE19717802B4 (de) * 1997-04-26 2009-09-17 Dehn + Söhne GmbH + Co KG Funkenstrecke
DE10140950B4 (de) * 2001-08-01 2006-10-19 Dehn + Söhne Gmbh + Co. Kg Gekapselter Überspannungsableiter auf Funkenstreckenbasis
DE10357945A1 (de) * 2003-12-09 2005-07-14 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzeinrichtung
DE102006048977B4 (de) * 2005-05-30 2017-02-23 Dehn + Söhne Gmbh + Co. Kg Gekapselte, druckfest ausgeführte, nicht hermetisch dichte, rotationssymmetrische Hochleistungsfunkenstrecke
DE102005024658B4 (de) * 2005-05-30 2007-02-15 Dehn + Söhne Gmbh + Co. Kg Gekapselte, druckfest ausgeführte, nicht hermetisch dichte, rotationssymmetrische Hochleistungsfunkenstrecke
DE102005036265A1 (de) * 2005-08-02 2007-02-08 Epcos Ag Funkenstrecke
DE502006008106D1 (de) * 2006-10-17 2010-11-25 Dehn & Soehne Gekapselte, druckfest ausgeführte, nicht hermetisch dichte, rotationssymmetrische hochleistungsfunkenstrecke
DE102007015931A1 (de) * 2007-01-04 2008-07-10 Dehn + Söhne Gmbh + Co. Kg Gekapselte, druckfest ausgeführte, nicht hermetisch dichte, rotationssymmetrische Hochleistungsfunkenstrecke
DE102009006545B4 (de) * 2009-01-29 2017-08-17 Epcos Ag Überspannungsableiter und Anordnung von mehreren Überspannungsableitern zu einem Array
US8861144B2 (en) * 2011-11-15 2014-10-14 Eaton Corporation Triggered arc flash arrester and switchgear system including the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431226A (en) * 1943-02-11 1947-11-18 Westinghouse Electric Corp Low-pressure gap device
US3283196A (en) * 1965-02-04 1966-11-01 Westinghouse Electric Corp Expulsion lightning arrester
DE2337743A1 (de) * 1973-07-25 1975-02-06 Dehn & Soehne Funkenstrecke
DE2627648A1 (de) * 1976-06-19 1977-12-22 Dehn & Soehne Funkenstrecke

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2397982A (en) * 1942-01-29 1946-04-09 Salzberg Bernard Spark gap tube
US2802150A (en) * 1950-08-03 1957-08-06 Joslyn Mfg & Supply Co Street lighting control unit
US3465205A (en) * 1968-02-12 1969-09-02 Gen Electric Vacuum gap devices with metal ionizable species evolving trigger assemblies
GB1358043A (en) * 1970-07-21 1974-06-26 Atomic Energy Authority Uk Electrical spark gap switch apparatus
US3723819A (en) * 1970-11-09 1973-03-27 Gen Electric Low voltage secondary lightning arrester sparkgap assembly
GB1405486A (en) * 1972-09-22 1975-09-10 Atomic Energy Authority Uk Low inductance arc discharge switches
GB1406297A (en) * 1972-09-22 1975-09-17 Atomic Energy Authority Uk Arc discharge electrical switches
US3811070A (en) * 1972-10-25 1974-05-14 Westinghouse Electric Corp Laser initiated three electrode type triggered vacuum gap device
US3798484A (en) * 1973-04-02 1974-03-19 Gen Electric Series multiple break vacuum arc discharge devices
US4013927A (en) * 1975-09-18 1977-03-22 Reliable Electric Company Surge arrester

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431226A (en) * 1943-02-11 1947-11-18 Westinghouse Electric Corp Low-pressure gap device
US3283196A (en) * 1965-02-04 1966-11-01 Westinghouse Electric Corp Expulsion lightning arrester
DE2337743A1 (de) * 1973-07-25 1975-02-06 Dehn & Soehne Funkenstrecke
DE2627648A1 (de) * 1976-06-19 1977-12-22 Dehn & Soehne Funkenstrecke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Nachrichten-Elektronik 33 (1979) 127-130 *

Also Published As

Publication number Publication date
CA1161106A (fr) 1984-01-24
DK155396B (da) 1989-04-03
DE2934237C2 (de) 1983-02-17
US4345293A (en) 1982-08-17
EP0024583A1 (fr) 1981-03-11
DK155396C (da) 1989-08-07
DK359980A (da) 1981-02-25
DE2934237A1 (de) 1981-03-26

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