EP0436529B1 - Parasurtension a decharge gazeuse - Google Patents

Parasurtension a decharge gazeuse Download PDF

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Publication number
EP0436529B1
EP0436529B1 EP88908942A EP88908942A EP0436529B1 EP 0436529 B1 EP0436529 B1 EP 0436529B1 EP 88908942 A EP88908942 A EP 88908942A EP 88908942 A EP88908942 A EP 88908942A EP 0436529 B1 EP0436529 B1 EP 0436529B1
Authority
EP
European Patent Office
Prior art keywords
electrodes
surge arrester
protective layer
ceramic insulator
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 - Lifetime
Application number
EP88908942A
Other languages
German (de)
English (en)
Other versions
EP0436529A1 (fr
Inventor
Gerhard Lange
Andre Scheidt
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0436529A1 publication Critical patent/EP0436529A1/fr
Application granted granted Critical
Publication of EP0436529B1 publication Critical patent/EP0436529B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01T4/04—Housings
    • 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
    • H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed

Definitions

  • the invention is in the field of electrical components and is applicable to the material design of the outer surface of gas discharge surge arresters, which have at least one tubular ceramic insulator and electrodes arranged at the ends of the ceramic insulator and gas-tightly connected to the ceramic insulator, the outer surface of which is connected to a metallic coating is provided.
  • Gas discharge surge arresters are used, among other things, to protect communication lines.
  • Surge arresters are used, on whose electrodes connecting wires are soldered, welded or molded.
  • Such surge arresters can have two electrodes facing one another and, if appropriate, a third, annular electrode arranged in the middle (DE-A1-28 28 650).
  • the connecting wires connected to the electrodes like the electrodes, are usually silver-plated if they consist of copper. Sometimes it is also required to use tin-plated connecting wires. This facilitates the wetting of the connecting wires during the soldering process by means of wave soldering.
  • bronze Cu-Sn alloy
  • the electrodes are contacted under spring force.
  • surge arresters with alloyed iron electrodes and, if necessary, to coat these electrodes with a nickel layer.
  • the invention is based on the object of a surge arrester to create, which can be manufactured inexpensively and handled as an automatically processable bulk material without impairing the insulation strength and which can be easily soldered into printed circuits or printed circuit boards.
  • the metallic coating consists of tinning and that a closed ring-shaped, insulating protective layer made of an acid and heat-resistant paint or varnish is applied to the outer lateral surface of each ceramic insulator whose width is at least 1 mm.
  • the tinning forms an inexpensive metallic coating for the electrodes.
  • Such tinning entails the risk that when the surge arrester is handled as bulk material, the tin coating is abraded on the rough outer surface of the ceramic insulators and thus the occurrence of insulation faults is promoted.
  • Applying the protective layer from a paint or varnish application eliminates this danger.
  • the protective layer forms a relatively smooth surface area on the outer surface of the ceramic insulator, on which no harmful tin abrasion is possible.
  • the protective layer is in its width so that the minimum value of the insulation strength (eg 1010 Ohm) is maintained, even if there is a tin abrasion on the other surface areas of the ceramic insulator.
  • the protective layer can optionally cover the entire outer surface of the ceramic insulator. In particular from a width of the protective layer of more than 3 to 4 mm, it is expedient in a further development of the invention to design this protective layer as part of a marking of the surge arrester.
  • the protective layer can be designed as a negative print, i. H. the protective layer also forms the label.
  • the protective layer can, however, also form a transparent, preferably colorless top layer for customary printing or a base for subsequent customary printing.
  • the acid resistance of the protective layer enables the use of galvanic treatments of the surge arrester provided with the protective layer, which are required in the further course of the manufacture of the surge arrester.
  • the heat resistance of the protective layer which is expediently at least 160 ° C., on the other hand ensures that the protective layer is not impaired, in particular when the component is subjected to alternating current (discoloration).
  • Commercially available air-drying one-component lacquers are preferred as the acid- and heat-resistant lacquer for the protective layer.
  • Printing inks are particularly suitable as acid and heat-resistant inks.
  • a surge arrester designed according to the invention can also be provided with tin-plated connecting wires in order to be able to arrange it on printed circuit boards and to be able to solder it to conductor tracks.
  • the use of tin-plated connecting wires ensures problem-free soldering in printed circuits or in printed circuit boards using wave soldering.
  • connecting wires are not molded onto the electrodes, they can be tinned with the electrodes before they are connected, in particular soldered. The tinning of the connecting wires can also take place together with the tinning of the electrodes.
  • the surge arrester 1 consists of the tubular ceramic insulator 2 with electrodes 3 and 4 arranged at its ends.
  • the electrodes are soldered to the ceramic insulator 2 in a gas-tight manner.
  • the connecting wires 5 and 6 made of copper are also welded to the electrodes, which are made of copper.
  • a lacquer layer 7 has been applied to the outer surface of the ceramic insulator 2 using a conventional printing method. This lacquer layer covers the entire outer surface of the ceramic insulator and has a width of about 5 mm. A width of 1 mm would already be sufficient. With a width that is smaller than the outer distance between the two electrodes 3 and 4, the protective layer can be arranged in the center or off-center to the electrodes 3 and 4.
  • connection wires 5 and 6 had been welded to the electrodes
  • the surge arrester was subjected to a galvanic treatment, with which a tin layer 8 was deposited on the outer surface of the electrodes 3 and 4 and on the connection wires 5 and 6.
  • FIG. 2 shows a gas discharge surge arrester 10 with three electrodes.
  • the arrester consists of the two tubular ceramic insulators 11 and 12, which are connected coaxially to one another by means of the ring electrode 13.
  • the electrodes 14 and 15 are arranged at the two other ends of the ceramic insulators 11 and 12.
  • the connecting wires 16, 17 and 18 are welded to these electrodes and to the ring electrode 13. Electrodes and connecting wires are made of copper.
  • the ceramic insulators 11 and 12 are each provided with a lacquer layer 19 after their gas-tight connection to the electrodes 14 and 15. After the connection wires were welded to the electrodes, the surge arrester was subjected to galvanic treatment, a tin layer 20 has been deposited on the electrodes and the connecting wires.
  • the coating application 7 on the ceramic insulator 2 according to FIG. 1 and on one of the two ceramic insulators 19 according to FIG. 2 has also been applied as a negative print for the purposes of identification.
  • a negative print is shown in detail in FIG. 3 and provided with the reference symbol 21.
  • the ceramic insulator can also be provided with a normal positive marking and with a colorless or translucent varnish applied over it.
  • FIG. 4 shows a surge arrester 30 with two electrodes 31 and 32 and with a ceramic insulator 33. There are no connecting wires.
  • the electrodes 31 and 32 consist of copper and are provided with a tin layer 34.
  • a protective layer 35 with a width of approximately 2 mm is applied to the ceramic insulator 33.

Landscapes

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

Abstract

On peut fabriquer économiquement un dispositif de parasurtension à décharge gazeuse (10), dont l'isolateur (11, 12) consiste en un petit tube en céramique et que l'on peut soumettre à un traitement automatique en vrac, de la manière suivante: les électrodes (11, 12) sur la surface extérieure du dispositif de parasurtension sont étamées (20) et la surface extérieure de l'isolateur en céramique est recouverte d'une couche de protection (19) annulaire de peinture ou de laque résistant à l'acide et à la chaleur et qui est ininterrompue dans le sens axial du dispositif de parasurtension. Ladite couche de protection (19) a au moins 1 mm de largeur. Elle peut recevoir une partie du marquage du dispositif de parasurtension sous forme d'impression négative (21). Les électrodes (11, 12) peuvent être dotées de sorties (16, 17) également étamées.

Claims (8)

  1. Protecteur de surtension à gaz (1), comprenant au moins un isolateur (2) tubulaire en céramique et des électrodes (3,4) disposées aux extrémités de l'isolateur en céramique et reliées, de manière étanche aux gaz, à l'isolateur en céramique,
    dans lequel la surface extérieure de chaque électrode est munie d'un revêtement (8) métallique,
    caractérisé
    en ce que le revêtement métallique est constitué d'un étamage (8) et en ce que, sur la surface latérale extérieure de chaque isolateur (2) en céramique, est déposée une couche (7) protectrice isolante, annulaire, fermée et ne s'interrompant pas dans la direction de l'axe de l'isolateur en céramique, en un colorant ou en un vernis acide et résistant à la chaleur, dont la largeur est d'au moins 1 mm.
  2. Protecteur de surtension à gaz suivant la revendication 1, dans lequel la couche (7) annulaire de protection fait partie d'un marquage.
  3. Protecteur de surtension à gaz suivant la revendication 1 ou 2, dans lequel la couche (7) annulaire de protection est constituée pour former le marquage en tant qu'impression négative (21).
  4. Protecteur de surtension à gaz suivant la revendication 1, dans lequel la couche (7) annulaire de protection est constituée d'un vernis séchant à l'air à un seul constituant.
  5. Protecteur de surtension à gaz suivant la revendication 1, dans lequel les électrodes (3,4) sont munies de fils (5,6) de raccordement, qui sont également étamés.
  6. Protecteur de surtension à gaz suivant la revendication 5, dans lequel les électrodes (3,4) et les fils (5,6) de raccordement sont en cuivre et sont soudés les uns aux autres.
  7. Protecteur de surtension à gaz suivant la revendication 6, dans lequel les électrodes (3,4) et les fils (5,6) de raccordement sont soudés les uns aux autres alors qu'ils ne sont pas encore étamés.
  8. Protecteur de surtension à gaz suivant la revendication 5, ayant des fils de raccordement coudés pour le montage dans des circuits imprimés, dans lequel les fils (16,18) de raccordement sont coudés avant le dépôt de l'étamage.
EP88908942A 1988-09-27 1988-10-12 Parasurtension a decharge gazeuse Expired - Lifetime EP0436529B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3833167 1988-09-27
DE3833167A DE3833167A1 (de) 1988-09-27 1988-09-27 Gasentladungs-ueberspannungsableiter
PCT/DE1988/000638 WO1990003677A1 (fr) 1988-09-27 1988-10-12 Parasurtension a decharge gazeuse

Publications (2)

Publication Number Publication Date
EP0436529A1 EP0436529A1 (fr) 1991-07-17
EP0436529B1 true EP0436529B1 (fr) 1994-04-27

Family

ID=6364034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88908942A Expired - Lifetime EP0436529B1 (fr) 1988-09-27 1988-10-12 Parasurtension a decharge gazeuse

Country Status (6)

Country Link
US (1) US5103135A (fr)
EP (1) EP0436529B1 (fr)
JP (1) JP2666188B2 (fr)
AU (1) AU619506B2 (fr)
DE (2) DE3833167A1 (fr)
WO (1) WO1990003677A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0405337B1 (fr) * 1989-06-28 1993-12-22 Siemens Aktiengesellschaft Connecteur de sécurité pour une barrette de distribution sur une installation de télécommunication
JP2752017B2 (ja) * 1991-12-18 1998-05-18 矢崎総業株式会社 放電管
DE4229163A1 (de) * 1992-09-01 1994-03-03 Siemens Matsushita Components Verfahren zum Einlöten eines Keramikkörpers eines elektrischen Bauelementes in ein metallisches Gehäuse
JP2573908Y2 (ja) * 1992-10-06 1998-06-04 矢崎総業株式会社 放電管
US5466989A (en) * 1993-01-20 1995-11-14 Yazaki Corporation Discharge tube
US5959822A (en) * 1995-12-22 1999-09-28 Hubbell Incorporated Compact lightning arrester assembly
DE19741658A1 (de) 1997-09-16 1999-03-18 Siemens Ag Gasgefüllte Entladungsstrecke
DE10059534C1 (de) 2000-11-30 2002-06-27 Epcos Ag Elektrisches Bauelement, Anordnung des Bauelements und Verfahren zur Herstellung der Anordnung
US7173510B2 (en) * 2003-07-28 2007-02-06 Matsushita Electric Industrial Co., Ltd. Thermal fuse and method of manufacturing fuse
JP2006012492A (ja) * 2004-06-23 2006-01-12 Shinko Electric Ind Co Ltd 放電管
JP2006012519A (ja) * 2004-06-24 2006-01-12 Shinko Electric Ind Co Ltd 表面実装用放電管
DE102005036265A1 (de) * 2005-08-02 2007-02-08 Epcos Ag Funkenstrecke
CN101297452A (zh) * 2005-09-14 2008-10-29 力特保险丝有限公司 充气式电涌放电器、激活化合物、点火条及相应方法
SE532114C2 (sv) 2007-05-22 2009-10-27 Jensen Devices Ab Gasurladdningsrör
KR100817485B1 (ko) * 2007-08-28 2008-03-31 김선호 방전제어전극이 구비된 방전소자 및 그 제어회로
DE102014104576B4 (de) * 2014-04-01 2016-02-11 Phoenix Contact Gmbh & Co. Kg Überspannungsableiter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1340657A (en) * 1919-12-12 1920-05-18 Jacobus Edward Lightning-arrester
FR93682E (fr) * 1964-07-20 1969-05-02 Unelec Dispositif de protection contre les surtensions.
US3904910A (en) * 1973-11-23 1975-09-09 Ericsson Telefon Ab L M Gas-filled discharge overvoltage protector
DE2828650C3 (de) * 1978-06-29 1982-03-25 Siemens AG, 1000 Berlin und 8000 München Überspannungsableiter

Also Published As

Publication number Publication date
DE3889343D1 (de) 1994-06-01
WO1990003677A1 (fr) 1990-04-05
AU2541988A (en) 1990-04-18
EP0436529A1 (fr) 1991-07-17
US5103135A (en) 1992-04-07
DE3833167A1 (de) 1990-03-29
JP2666188B2 (ja) 1997-10-22
AU619506B2 (en) 1992-01-30
JPH04500880A (ja) 1992-02-13

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