EP0016242A1 - Dérivateur de surtension à décharge dans un gaz à comportement sûr - Google Patents

Dérivateur de surtension à décharge dans un gaz à comportement sûr Download PDF

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Publication number
EP0016242A1
EP0016242A1 EP79100974A EP79100974A EP0016242A1 EP 0016242 A1 EP0016242 A1 EP 0016242A1 EP 79100974 A EP79100974 A EP 79100974A EP 79100974 A EP79100974 A EP 79100974A EP 0016242 A1 EP0016242 A1 EP 0016242A1
Authority
EP
European Patent Office
Prior art keywords
surge arrester
outer electrodes
gas discharge
short
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.)
Ceased
Application number
EP79100974A
Other languages
German (de)
English (en)
Inventor
Gerhard Lange
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 EP0016242A1 publication Critical patent/EP0016242A1/fr
Ceased 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
    • 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

Definitions

  • the invention relates to a gas discharge surge arrester with fail-safe behavior, in which the gas discharge path is electrically short-circuited in the event of overload.
  • thermal overload is meant to mean an overload which arises, for example, when a gas discharge surge arrester burns in the glow area for more than ten seconds. The low current per se heats the entire arrester in such a way that the housing seals are endangered.
  • the short-circuit behavior before the gas discharge surge arrester is destroyed is known as a fail-safe behavior and is described in the event of an internal short circuit, for example in DE-PS 2 101 417. Due to the special design of the inner electrodes, they fuse if the current is too high after the gas discharge path is ignited before the housing can become leaky due to heating.
  • an external short-circuit mechanism is known, for example, from DGM 75 33 725.
  • Impermissible Heating of the gas discharge surge arrester causes a soft solder pill to melt on one of the outer electrodes. This causes a short-circuit spring to short-circuit the outer electrodes.
  • the maximum portable thermal power loss should not lead to a short circuit if possible.
  • the so-called short-circuit characteristic is adapted to the respective needs, i.e. the short circuit only occurs when the thermal power loss is just before the so-called destruction line.
  • the present invention has for its object to optimize the fail-safe behavior in such a way that the performance of the gas discharge surge arrester and its holder or a magazine with several gas discharge surge arresters can be fully utilized, but that a safe short circuit electrical and thermal overload is guaranteed.
  • Such a combination of an internal and external short circuit allows an ideal short circuit behavior.
  • the short-circuit reaction takes place according to the ideal short-circuit characteristic, regardless of whether a fast electrical or a slow thermal overload is the cause.
  • the performance of the gas discharge surge arrester is fully exploited.
  • the short circuit can be placed close to the line of destruction. It is possible to adapt the short-circuit point to the individual circumstances of the place of use.
  • the short-circuiting bracket is firmly connected to one of the outer electrodes and is held against its own spring force from the other outer electrode by a melting body which is in thermal connection on the gas-filled housing and by thermal overloading of the housing Soften the spring force of the shorting bar releases.
  • the melting body is a soft solder pill, which is located at a defined distance from the outer electrodes on the intermediate insulator or that the melting body is made of plastic and is located on the housing at a defined distance between the electrodes.
  • the melting body can also be a plastic ring placed around the housing.
  • the defined distance of the melting body from the outer electrodes allows an optimal adaptation of the maximum thermal load capacity.
  • the melting body reacts to the heating of this outer electrode with a delay.
  • the short-circuiting bracket consists at least partially of a bimetal which, by thermal connection with the gas-filled housing, can short-circuit the outer electrodes before its thermal overload. With the bimetal, the short circuit is canceled again after the thermal overload has ended. This has the advantage that the gas discharge surge arrester becomes functional again, unless an internal short circuit has also occurred.
  • the shorting bar lies in thermal connection on the intermediate insulator at a point with a defined distance from the outer electrodes.
  • the defined distance again allows adaptation by means of the time delay of the short circuit over the defined length of the heat conduction from the electrodes to the thermal connection point with the shorting bar.
  • the shorting bar can be firmly connected to one of the two outer electrodes.
  • Fig. 1 denotes a tubular ceramic or glass housing wall of a so-called button arrester, which is located as an insulator between two cup-shaped electrodes 2 and 3 at the tube ends.
  • the electrodes 2 and 3 are gas-tightly bonded to the end faces of the housing wall 1 at the cup edges and form with you a noble gas-filled gas discharge space.
  • the bowl bottoms protrude axially into the interior of the housing wall 1 and each carry on their inner side a welded-on metal plate 4 or 5, which serve as inner electrodes with a fail-safe behavior, as described in DE-PS 21 01 417 is.
  • a supply wire 6 or 7 is welded onto the outer sides of the cup bases.
  • cup edges form the outer electrodes in the sense of the present description of the external short circuit.
  • a shorting bar 8 is welded onto the outer edge of the electrode 2 and extends over the edge along the housing wall to the outer edge of the other electrode 3. It is resilient against the other electrode 3 and is held by this electrode 3 by a melting pill 9 made of metal or plastic. This melting pill. 9 sits at a point on the housing wall 1 where its distance from one electrode edge 3 is approximately half of its distance from the other electrode edge 2.
  • FIG. 2 The axial top view of FIG. 2 shows the one outer electrode 2, the lead wire 6 and the shorting bar 8, which rests on two fastening tongues with four welding spots on the outer edge of the electrode 2.
  • the two inner electrodes 4 and 5 fuse together and thereby form a permanent short circuit before a defect due to heat development on the seal between the housing wall 1 and the electrodes 2 and 3 can occur.
  • a warming for example, by a longer glow discharge, where an internal short circuit cannot occur, but which Sealing between the housing wall and the electrodes 2 and 3 can be dangerous, with a time delay corresponding to the distance of the melting pill 9 from the outer electrode 3 and the thermal conductivity of the housing wall 1, that the melting cap 9 reaches its melting point and yields to the spring pressure of the shorting bar 8.
  • the contact end of the shorting bar 8 springs against the outer electrode 3 and short-circuits the two outer electrodes 2 and 3.
  • FIG. 3 contains a longitudinal view from the outside of a housing wall 1 and outer electrodes 2 and 3, which are designed without connecting wires.
  • the internal shorting mechanism corresponds to that of FIG. 1 and is omitted for the sake of simplicity.
  • a plastic ring 10 is placed around the housing wall 1, again with a defined distance from the outer electrode 3.
  • the function of the plastic ring 10 corresponds to that of the melting pill 9.
  • the shorting bar 8 is not with two tongues on the outer electrode 2 attached, but in a production-technically simpler version as a further sheet metal strip across the outer electrode 2, as shown in FIG. 4 in the axial top view.
  • FIG. 5 again shows an arrester with housing wall 1 and two outer electrodes 2 and 3 in an external longitudinal view.
  • the inner short circuit mechanism can again correspond to that of FIG. 1.
  • the outer short-circuiting mechanism is brought about by a bimetallic strip which is in thermal connection with the housing wall 1.
  • the bimetallic strip 11 extends along the arrester and is approximately in the middle held by a metallic clip 12 on the housing wall 1.
  • the ends of the bimetallic strip 11 move towards the outer electrodes 2 and 3 and close them briefly, shown in broken lines in FIG. 5.
  • the short circuit is canceled again when the bimetallic strip 11 stretches again. From the axial top view in FIG. 6, the clamp fit of the clasp 12 on the housing wall 1 can be seen.
  • the 7 also contains an external longitudinal view of an arrester with housing wall 1, external electrodes 2 and 3 and with an internal short-circuit mechanism, not shown.
  • the outer short-circuit mechanism consists of a single bimetallic strip 13 which is fixedly connected to the outer electrode 2 and lies transversely over the outer edge thereof. It extends bent over the edge along the housing wall 1 to the other outer electrode 3, where it touches its radial outer edge when heated and thereby short-circuits the two outer electrodes 2 and 3. After cooling, the contact is opened again so that the arrester is functional again, unless an internal short-circuit has occurred.
  • the combination of an internal and external short circuit according to the invention is not limited to these exemplary embodiments. It can also be used with the same advantage on multi-line arresters and on combinations of several arresters.

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  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP79100974A 1979-03-21 1979-03-30 Dérivateur de surtension à décharge dans un gaz à comportement sûr Ceased EP0016242A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792911110 DE2911110A1 (de) 1979-03-21 1979-03-21 Gasentladungs-ueberspannungsableiter mit fail-safe-verhalten
DE2911110 1979-03-21

Publications (1)

Publication Number Publication Date
EP0016242A1 true EP0016242A1 (fr) 1980-10-01

Family

ID=6066022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100974A Ceased EP0016242A1 (fr) 1979-03-21 1979-03-30 Dérivateur de surtension à décharge dans un gaz à comportement sûr

Country Status (4)

Country Link
EP (1) EP0016242A1 (fr)
JP (1) JPS55128281A (fr)
AU (1) AU5662280A (fr)
DE (1) DE2911110A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027061A1 (fr) * 1979-10-05 1981-04-15 Citel Dispositif parafoudre permettant une mise en court-circuit extérieure et ensemble de protection correspondant
EP0040522A1 (fr) * 1980-05-16 1981-11-25 The M-O Valve Company Limited Dérivateur de surtensions
FR2484695A1 (fr) * 1980-06-11 1981-12-18 Tubes Lampes Elect Cie Indle Parafoudre permettant une mise en court-circuit exterieure
FR2545644A1 (fr) * 1983-05-02 1984-11-09 Int Standard Electric Corp Protecteur antisurtension
WO1987006399A1 (fr) * 1986-04-09 1987-10-22 Schaltbau Gesellschaft Mbh Dispositif pour proteger un coupe-circuit de surtension contre une surchage thermique
GB2230900A (en) * 1989-04-24 1990-10-31 Semitron Cricklade Ltd Electrical components
EP0548587A1 (fr) * 1991-12-24 1993-06-30 Cerberus Ag Dispositif de protection contre les surtensions
DE19705097A1 (de) * 1997-01-31 1998-08-06 Siemens Ag Gasgefüllter Überspannungsableiter mit äußerer Kurzschlußeinrichtung
WO2019220171A1 (fr) * 2018-05-14 2019-11-21 Saltek S.R.O. Limiteur de tension avec dispositif de court-circuitage

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146787A1 (de) * 1981-11-25 1983-06-01 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsableiter mit aeusserer kurzschlussstrecke
JPS5911774A (ja) * 1982-07-12 1984-01-21 Kansai Electric Power Co Inc:The 電力変換装置
DE3323687C2 (de) * 1983-07-01 1986-12-18 Krone Gmbh, 1000 Berlin Überspannungsableitermagazin für Anschlußleisten der Fernmeldetechnik
JPS6026191U (ja) * 1983-07-28 1985-02-22 株式会社　白山製作所 プリント配線基板装着用三極避雷器の短絡機構
JPS6088485U (ja) * 1983-11-25 1985-06-18 新光電気工業株式会社 ガス入り避雷管
JPH0226149Y2 (fr) * 1985-08-13 1990-07-17
JPS6276488U (fr) * 1985-10-31 1987-05-16
JPS637933U (fr) * 1986-06-30 1988-01-19
DE3820272C1 (fr) * 1987-10-20 1989-04-06 Krone Ag, 1000 Berlin, De
DE19731312A1 (de) 1997-07-15 1999-01-28 Siemens Ag Überspannungsableiter mit äußerer Kurzschlußeinrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE264536C (fr) *
CH152067A (de) * 1930-11-01 1932-01-15 Ruppel Sigwart Professor Vorrichtung zur Begrenzung und Ableitung von Überspannungen in Leitungsnetzen.
FR2271660A1 (en) * 1974-05-16 1975-12-12 Bloch Pimentel Jean Overvoltage cct protector - has electrode attachments fusing during prolonged arcing
US4034326A (en) * 1975-04-17 1977-07-05 Comtelco (U.K.) Limited Temperature sensitive trip device
US4056840A (en) * 1976-05-12 1977-11-01 Reliable Electric Company Line protector for communications circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE264536C (fr) *
CH152067A (de) * 1930-11-01 1932-01-15 Ruppel Sigwart Professor Vorrichtung zur Begrenzung und Ableitung von Überspannungen in Leitungsnetzen.
FR2271660A1 (en) * 1974-05-16 1975-12-12 Bloch Pimentel Jean Overvoltage cct protector - has electrode attachments fusing during prolonged arcing
US4034326A (en) * 1975-04-17 1977-07-05 Comtelco (U.K.) Limited Temperature sensitive trip device
US4056840A (en) * 1976-05-12 1977-11-01 Reliable Electric Company Line protector for communications circuit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027061A1 (fr) * 1979-10-05 1981-04-15 Citel Dispositif parafoudre permettant une mise en court-circuit extérieure et ensemble de protection correspondant
EP0040522A1 (fr) * 1980-05-16 1981-11-25 The M-O Valve Company Limited Dérivateur de surtensions
FR2484695A1 (fr) * 1980-06-11 1981-12-18 Tubes Lampes Elect Cie Indle Parafoudre permettant une mise en court-circuit exterieure
FR2545644A1 (fr) * 1983-05-02 1984-11-09 Int Standard Electric Corp Protecteur antisurtension
WO1987006399A1 (fr) * 1986-04-09 1987-10-22 Schaltbau Gesellschaft Mbh Dispositif pour proteger un coupe-circuit de surtension contre une surchage thermique
GB2230900A (en) * 1989-04-24 1990-10-31 Semitron Cricklade Ltd Electrical components
EP0548587A1 (fr) * 1991-12-24 1993-06-30 Cerberus Ag Dispositif de protection contre les surtensions
DE19705097A1 (de) * 1997-01-31 1998-08-06 Siemens Ag Gasgefüllter Überspannungsableiter mit äußerer Kurzschlußeinrichtung
WO2019220171A1 (fr) * 2018-05-14 2019-11-21 Saltek S.R.O. Limiteur de tension avec dispositif de court-circuitage

Also Published As

Publication number Publication date
AU5662280A (en) 1980-09-25
JPS55128281A (en) 1980-10-03
DE2911110A1 (de) 1980-09-25

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19810327

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Effective date: 19820427

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Inventor name: LANGE, GERHARD