EP0064528A1 - Dispositif de protection contre les surtensions a decharge dans un gaz avec douille enveloppante concentrique - Google Patents

Dispositif de protection contre les surtensions a decharge dans un gaz avec douille enveloppante concentrique

Info

Publication number
EP0064528A1
EP0064528A1 EP81903118A EP81903118A EP0064528A1 EP 0064528 A1 EP0064528 A1 EP 0064528A1 EP 81903118 A EP81903118 A EP 81903118A EP 81903118 A EP81903118 A EP 81903118A EP 0064528 A1 EP0064528 A1 EP 0064528A1
Authority
EP
European Patent Office
Prior art keywords
electrode
electrodes
surge arrester
gas
ignition
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
EP81903118A
Other languages
German (de)
English (en)
Inventor
Jürgen Boy
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6116700&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0064528(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0064528A1 publication Critical patent/EP0064528A1/fr
Ceased legal-status Critical Current

Links

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
    • 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

Definitions

  • the invention relates to a surge arrester with a gas-filled housing in which there are cylindrical electrodes which are tapered in the shape of a truncated cone and are spaced apart from one another by a tubular insulating body and which are thicker-walled in the area of the active surfaces than the conical side walls in the area of the transition to the insulating body on the inner wall thereof
  • Line of electrically conductive material extends as an ignition line in the direction from one electrode to the other electrode, the surge arrester being able to be installed in a metallic sleeve serving as a holder with a movable basket surrounding the arrester.
  • Such a surge arrester is known from DE-OS 28 28 650.
  • the collector has copper electrodes with a strong waffle that contains an electrode activation mass.
  • the Keraaikisoier body encloses the electrodes, which have a small distance.
  • On the ceramic insulating body several graphite stripes are applied to the.
  • the graphite streaks have no contact with the electrodes at both ends and are therefore referred to as center streaks.
  • center streaks In this way, isolation gaps are created in a switched-off back room, which also with 500 A wave during the life cycle 10 / 1000 ⁇ s can not be vaporized by sputtering.
  • the effectiveness of center ignition bars on the response surge voltage is, however, less than that of ignition bars connected to an electrode, so that the permissible response voltage limit is exceeded earlier during lifetime operation with center ignition bars.
  • gas-filled surge arresters are increasingly being used to protect telephone systems against overvoltages. Versions with a short-circuit mechanism are used for the station protection and central building protection. A sleeve with a movable basket tightly encloses the surge arrester. Gas-filled surge arresters with good electrical properties are already known from DE-OS 28 28 650 mentioned at the beginning.
  • the present invention has for its object to take advantage of the electrical influence of the concentrically enclosing socket to create gas-filled surge arresters with even further improved life-time properties.
  • the socket is at ground potential and concentrically tightly surrounds the arrester, and / or the ignition line is electrically conductively connected to the electrode designed as a wire or pin electrode and in Low-evaporation rear space of the other electrode designed as a perforated electrode ends, the two electrodes being arranged in such a way that an almost equally large distance is formed between the electrodes and between the perforated electrode and the ignition line.
  • the two electrodes are pre-cast made of copper and on the inner wall of the insulating body four ignition lines made of graphite are attached.
  • a soft solder pill is provided between the base of the socket and the perforated electrode. This measure further increases the operational safety of the operator. If the conductor is overloaded, the soft solder pill melts and the holder is then pressed against the electrode by means of a spring, thus causing a safe short circuit with the counterelectrode via the holder. Surge arresters equipped in this way are therefore also referred to as arresters with fall-safe behavior.
  • the present invention has the following advantages.
  • the DC response voltage (slow voltage rise) is determined by the electrode gap.
  • the surge voltage of the arrester outside the socket has a polarity effect. If there is cathode potential at the ignition screed above the electrode, the arrester has lower response surge voltage values than in the opposite direction. Abieiter within the socket have low pickup voltage values in both polarities, since the socket acts as an additional ignition aid. The low surge voltage values are retained during the life test.
  • an electrode activation compound consisting of magnesia oxide and Ni powder, with a grain size between 1 to 40 ⁇ m, a switching frequency in the life test with 500 A, wave 10 / 1000 ⁇ s> 1000 is achieved due to a stable DC response voltage and good insulation.
  • the surge arrester 1 shown in the figure consists of a gas-filled housing, preferably with a noble gas filling.
  • frustoconical cylindrical electrodes 3, 4 are inserted, which are thick-walled in the area of the active surfaces than the conical side walls in the area of the transition to the insulating body 5.
  • the surge arrester 1 is in a serving as a socket 2 metallic Inserted sleeve from a movable basket concentrically enclosing the drain 1, which is slit on the side and has a central opening at the bottom.
  • the socket 2 is guided in a metallic cylinder 11. When using output 1, this version 2 is at ⁇ rd potential.
  • the ignition lines 6 are electrically conductively connected to the electrode 3 designed as a wire or pin electrode and end in the low-vaporization rear space of the other electrode 4 designed as a perforated electrode. Both electrodes 3, 4 are dimensioned such that the distance between the electrodes 3, 4 and is formed between the hole electrode 4 and the ignition lines 6.
  • a deep waffle 7 is provided in which an elec electrode activation mass 8 is anchored.
  • the electrode activation composition preferably consists of magnesium oxide and nickel powder with a grain size between 1 to 40 / um.
  • a soft solder pill 9 is provided between the perforated electrode 4 and the bottom of the holder 2 and melts when the conductor 1 is overloaded.
  • the socket 2 is pressed against the hole electrode 4 by a spring force, the direction of which is indicated by the arrow 12, and a safe short circuit is brought about with the wire electrode 3 (counter electrode), namely via the side wall of the socket 2, which is pressed against the wire contact.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

Dispositif de protection contre les surtensions (1) comprenant un boitier rempli de gaz, dans lequel des electrodes (3, 4) situees en regard l'une de l'autre sont maintenues a distance par un corps isolant (5) tubulaire et sur la paroi interieure duquel au moins une bande d'allumage (6) s'etend dans la direction allant d'une electrode a l'autre, le dispositif (1) etant e d'une douille concentrique (2). Dans ce dispositif (1), l'influence electrique de cette douille (2) est utilisee en vue d'ameliorer encore les caracteristiques de longevite du dispositif. A cet effet, l'invention prevoit que la douille (2) est mise au potentiel de la terre, que la bande d'allumage (6) est reliee electriquement a l'electrode (3) en forme de tige ou de broche et se termine dans l'espace arriere a faible vaporisation de l'autre electrode (4) qui est creuse, les deux electrodes (3, 4) etant disposees de telle maniere que la distance separant les electrodes (3, 4) soit approximativement egale a la distance comprise entre l'electrode creuse (4) et la bande d'allumage (6) L'invention s'applique aux dispositifs de protection contre les surtensions a decharge dans un gaz.
EP81903118A 1980-11-13 1981-11-11 Dispositif de protection contre les surtensions a decharge dans un gaz avec douille enveloppante concentrique Ceased EP0064528A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803042847 DE3042847A1 (de) 1980-11-13 1980-11-13 Gasentladungs-ueberspannungsableiter mit konzentrisch umschliessender fassung
DE3042847 1980-11-13

Publications (1)

Publication Number Publication Date
EP0064528A1 true EP0064528A1 (fr) 1982-11-17

Family

ID=6116700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81903118A Ceased EP0064528A1 (fr) 1980-11-13 1981-11-11 Dispositif de protection contre les surtensions a decharge dans un gaz avec douille enveloppante concentrique

Country Status (6)

Country Link
US (1) US4583147A (fr)
EP (1) EP0064528A1 (fr)
JP (1) JPH0127553B2 (fr)
CA (1) CA1189137A (fr)
DE (1) DE3042847A1 (fr)
WO (1) WO1982001792A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227668A1 (de) * 1982-07-23 1984-01-26 Siemens AG, 1000 Berlin und 8000 München Funkenstrecke mit einem gasgefuellten gehaeuse
EP0249796B1 (fr) * 1986-06-18 1991-02-27 Siemens Aktiengesellschaft Limitateur de surtension à décharge à gaz
DE3621254A1 (de) * 1986-06-25 1988-01-07 Siemens Ag Gasentladungsueberspannungsableiter
DE4033927A1 (de) * 1990-10-25 1992-04-30 Hoechst Ceram Tec Ag Ueberspannungsableiter
CN1039268C (zh) * 1993-05-10 1998-07-22 程鹏 涡流高压磁耦合开关
DE102005016848A1 (de) * 2005-04-12 2006-10-19 Epcos Ag Überspannungsableiter
DE102005036265A1 (de) * 2005-08-02 2007-02-08 Epcos Ag Funkenstrecke
WO2007033247A2 (fr) * 2005-09-14 2007-03-22 Littelfuse, Inc. Limiteur de surtension rempli de gaz, compose d'activation, rubans d'amorçage et procede associe
DE102012103158A1 (de) 2012-04-12 2013-10-17 Epcos Ag Überspannungsableiter

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2207009C3 (de) * 1972-02-15 1979-03-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Überspannungsableiter
DE2346174B2 (de) * 1973-09-13 1977-04-07 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsableiter
US3886411A (en) * 1974-02-04 1975-05-27 Reliable Electric Co Line protector having gas tube surge arrestor
DE2416397B2 (de) * 1974-04-04 1978-02-09 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsableiter
DE2445063B2 (de) * 1974-09-20 1977-09-29 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsableiter mit einem gasgefuellten entladungsgefaess
US4013927A (en) * 1975-09-18 1977-03-22 Reliable Electric Company Surge arrester
US4132915A (en) * 1977-01-14 1979-01-02 Joslyn Mfg. And Supply Co. Spark gap protector
DE2828650C3 (de) * 1978-06-29 1982-03-25 Siemens AG, 1000 Berlin und 8000 München Überspannungsableiter
DE2832470A1 (de) * 1978-07-24 1980-02-07 Siemens Ag Gasentladungsroehre, insbesondere ueberspannungsableiter
DE2834088A1 (de) * 1978-08-03 1980-02-14 Siemens Ag Gasentladungsroehre, insbesondere ueberspannungsableiter
US4208694A (en) * 1978-10-11 1980-06-17 Reliable Electric Company Line protector
US4241374A (en) * 1979-01-29 1980-12-23 Reliable Electric Company Surge voltage arrester with ventsafe feature
DE2951467C2 (de) * 1979-12-20 1982-06-24 Siemens AG, 1000 Berlin und 8000 München Überspannungsableiter mit parallelgeschalteter Luftfunkenstrecke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8201792A1 *

Also Published As

Publication number Publication date
JPH0127553B2 (fr) 1989-05-30
WO1982001792A1 (fr) 1982-05-27
DE3042847A1 (de) 1982-06-09
US4583147A (en) 1986-04-15
CA1189137A (fr) 1985-06-18
JPS57501900A (fr) 1982-10-21

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Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19820521

AK Designated contracting states

Designated state(s): GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19870220

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LANGE, GERHARD

Inventor name: BOY, JUERGEN