EP0809336A1 - Dérivateur de surtension rempli de gaz, muni d'un dispositif de court-circuit externe - Google Patents

Dérivateur de surtension rempli de gaz, muni d'un dispositif de court-circuit externe Download PDF

Info

Publication number
EP0809336A1
EP0809336A1 EP97250163A EP97250163A EP0809336A1 EP 0809336 A1 EP0809336 A1 EP 0809336A1 EP 97250163 A EP97250163 A EP 97250163A EP 97250163 A EP97250163 A EP 97250163A EP 0809336 A1 EP0809336 A1 EP 0809336A1
Authority
EP
European Patent Office
Prior art keywords
electrode
surge arrester
electrodes
spring clip
spacer
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
EP97250163A
Other languages
German (de)
English (en)
Inventor
Frank Bothe
Jörg Riedel
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP0809336A1 publication Critical patent/EP0809336A1/fr
Ceased legal-status Critical Current

Links

Images

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 is in the field of electrical components and can be used in the structural design of a gas-filled surge arrester which is provided with an external short-circuit device.
  • Such short-circuit devices are common in both two-electrode and three-electrode surge arresters. They serve to protect the surge arrester during long-term loads;
  • Such a short-circuit device generally contains a structural element which can be melted at higher temperatures and by means of which the two electrodes or the central electrode and one or both end electrodes are short-circuited.
  • a spring contact and an arrester contact are arranged one behind the other electrically in parallel with the two electrodes, a spacer softening at elevated temperature being located between the two contacts.
  • This spacer consists of a glass fiber reinforced plastic which is dimensionally stable at normal operating temperature and softens at elevated temperature, for example made of polycarbonate (EP 0 548 587 A1).
  • a two-armed spring clip is attached centrally to the center electrode.
  • the two free ends of the arms of this spring clip lie isolated on the circumference of the electrodes.
  • the spring clip is also used to design parallel air spark gaps.
  • the ends of the two arms of the spring clip each an approximately 20 to 40 ⁇ m thick insulating layer made of, for example, polyurethane varnish (US Pat. No. 4,912,592 A).
  • the short-circuiting device also consists of a two-armed spring clip which extends in the axial direction, but which is curved like a roof.
  • the arms of the spring clip enclose an obtuse angle between them and their free ends lie against the end electrodes with the interposition of a fusible insulating layer.
  • the outermost ends of the two arms are slightly angled so that they run parallel to the axis of the surge arrester and consequently rest on the outer peripheral surface of the end electrodes (FR-A-2 625 377).
  • the two-arm spring clip is dimensioned such that its arms project axially beyond the free ends of the end electrodes and rest on the circumferential edge of the respective end electrode with the interposition of an insulating film (WO 94/22191).
  • the invention has for its object to design the short-circuit device so that it does not protrude axially from the surge arrester and still a safe Guaranteed contact.
  • the outer diameter of the other electrode is at least about 1 mm larger than the outer diameter of the insulator, so that the other electrode has a radially projecting edge over the insulator, and that The spring clip is stretched in an arcuate manner is that its other end is axially spaced from the edge of the other electrode by the spacer.
  • the outer diameter of the two end electrodes is at least about 1 mm larger than the outer diameter of the two insulators, so that the two end electrodes have a radially projecting edge beyond the insulator , and that the two arms of the spring clip are stretched in an arcuate manner such that their free ends are kept axially at a distance from the edge of the respective end electrode by the spacers.
  • the spring clip is not tensioned radially but axially as before, specifically against a special edge of the respective electrode.
  • the height of this edge is to be selected so that a secure fixation of the free end of the spring clip and a secure positioning of the spacer are ensured.
  • the free end of the spring clip can be angled; Such an angling also facilitates the arrangement and fixing of the spacer, which consists, for example, of a cylindrical, plate-like, cuboid or cube-shaped plastic part.
  • a space is expediently provided between the free end of the spring clip and the edge of the respective electrode, which holds the melting material of the spacer in the event of an overload and thereby enables direct contact between the spring clip and the electrode.
  • This space can be a recess in the edge region of the electrode, the volume of this recess should be greater than the volume of the fusible spacer.
  • this space can also be provided in the area of the spring clip, in which it is provided at its free, optionally angled end with two projections - for example beads - between which the spacer to be arranged and via which the short-circuit contact takes place in the event of an overload.
  • the surge arrester according to Figure 1 consists essentially of the two electrodes 1 and 2 and the hollow cylindrical insulator 3 and a one-armed spring clip 4, which is part of the short-circuit device.
  • the spring clip 4 is fixed with its one end 5 to the outer circumference of the electrode 1 in a materially bonded manner.
  • the free end 6 lies axially against an edge 21 of the electrode 2 with the interposition of an insulating, fusible spacer 7.
  • the outer diameter D of the electrode 2 is chosen to be approximately 1.5 mm larger than the outer diameter d of the insulator 3.
  • the electrode 1 is dimensioned the same as the electrode 2.
  • Figure 2 shows a three-electrode surge arrester, which consists essentially of the center electrode 11, the two end electrodes 12 and 13, the two ceramic insulators 14 and 15 and the two-armed spring clip 16 as part of the short-circuiting device.
  • the spring bracket 16 is fixed with its middle part to the center electrode 11, while the two free ends of the arms 17 and 18 are axially clamped against the edge of the electrodes 12 and 13.
  • the electrodes 12 and 13 with their outer diameter D are also approximately 1.5 mm larger than the outer diameter d of the insulators 14 and 15.
  • the free ends of the two arms 17 and 18 are arched axially against the respective edge of the end electrodes 12 and 13 with the interposition of an insulating spacer 19 or 20.
  • FIGS. 3 and 4 show sections of the enlarged view of the end of the arm 18 of the spring clip 16 according to FIG. 2, this end having an angled section 181 which according to FIG. 4 is provided with two bead-like projections 182.
  • the insulating spacer 19 is arranged in the form of a cuboid plastic part. Due to its dimensions, this cuboid plastic part keeps the bead-like projections 182 at a distance from the edge of the electrode 13. In the event of an overload, the spacer 19 melts without contaminating the contact points between the projections 182 and the edge 13, so that reliable contacting is ensured .
  • the angled end 181 'of the arm 18' of a spring clip is smooth.
  • a recess 132 is provided in the edge region 131 'of the electrode 13', in which the cuboid, insulating spacer 19 is arranged.
  • the melting material of the spacer 19 can be distributed in the recess 132 without soiling the resulting contact area between the angled section 181 'and the edge area of the electrode 13'.

Landscapes

  • Fuses (AREA)
EP97250163A 1996-05-24 1997-05-23 Dérivateur de surtension rempli de gaz, muni d'un dispositif de court-circuit externe Ceased EP0809336A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996122461 DE19622461B4 (de) 1996-05-24 1996-05-24 Gasgefüllter Überspannungsableiter mit äußerer Kurzschlußeinrichtung
DE19622461 1996-05-24

Publications (1)

Publication Number Publication Date
EP0809336A1 true EP0809336A1 (fr) 1997-11-26

Family

ID=7796145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97250163A Ceased EP0809336A1 (fr) 1996-05-24 1997-05-23 Dérivateur de surtension rempli de gaz, muni d'un dispositif de court-circuit externe

Country Status (2)

Country Link
EP (1) EP0809336A1 (fr)
DE (1) DE19622461B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012512626A (ja) * 2008-12-16 2012-05-31 エプコス アーゲー 短絡手段を有するサージアレスタ

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162916A1 (de) * 2001-12-20 2003-07-10 Epcos Ag Federbügel, Überspannungsableiter mit dem Federbügel und Anordnung eines Überspannungsableiters
DE102008035903A1 (de) 2008-07-31 2010-02-18 Epcos Ag Elektrisches Bauelement und Verfahren zur Herstellung
DE102014116440B4 (de) * 2014-11-11 2016-05-19 Epcos Ag Ableiter
DE102015121438B4 (de) 2015-12-09 2023-12-28 Tdk Electronics Ag Elektrisches Schutzbauelement mit Kurzschlusseinrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575864A1 (fr) * 1985-01-08 1986-07-11 Nozick Jacques Dispositif de mise en court-circuit pour parasurtension
WO1988008634A1 (fr) * 1987-05-01 1988-11-03 Cooper (U.K.) Limited Parasurtension a gaz
FR2625377A1 (fr) * 1987-12-23 1989-06-30 Pendar Sarl Parafoudre de surete
EP0548587A1 (fr) * 1991-12-24 1993-06-30 Cerberus Ag Dispositif de protection contre les surtensions
DE4309331A1 (de) * 1993-03-17 1994-09-22 Siemens Ag Überspannungsableiter mit äußerer Kurzschlußeinrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3820272C1 (fr) * 1987-10-20 1989-04-06 Krone Ag, 1000 Berlin, De
DE4318366A1 (de) * 1993-04-21 1994-10-27 Siemens Ag Gasentladungs-Überspannungsableiter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575864A1 (fr) * 1985-01-08 1986-07-11 Nozick Jacques Dispositif de mise en court-circuit pour parasurtension
WO1988008634A1 (fr) * 1987-05-01 1988-11-03 Cooper (U.K.) Limited Parasurtension a gaz
US4912592A (en) * 1987-05-01 1990-03-27 Cooper (Uk) Limited Gas-filled surge arrestor
FR2625377A1 (fr) * 1987-12-23 1989-06-30 Pendar Sarl Parafoudre de surete
EP0548587A1 (fr) * 1991-12-24 1993-06-30 Cerberus Ag Dispositif de protection contre les surtensions
DE4309331A1 (de) * 1993-03-17 1994-09-22 Siemens Ag Überspannungsableiter mit äußerer Kurzschlußeinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012512626A (ja) * 2008-12-16 2012-05-31 エプコス アーゲー 短絡手段を有するサージアレスタ

Also Published As

Publication number Publication date
DE19622461A1 (de) 1997-11-27
DE19622461B4 (de) 2005-04-21

Similar Documents

Publication Publication Date Title
EP0995244B1 (fr) Limiteur de surtension a court-circuiteur exterieur
EP0962037B1 (fr) Limiteur de surtension rempli de gaz et dote d'un court-circuiteur externe
DE3113759C2 (de) Überspannungsableitervorrichtung für Trennleisten
EP0130403B1 (fr) Support d'éclateurs à introduire dans des rails de connexion pour la télécommunication
DE9321371U1 (de) Gasentladungs-Überspannungsableiter
DE3432990A1 (de) Strombegrenzende schmelzsicherung
DE3835921C2 (de) Überspannungsableiter mit Luftfunkenstrecke
EP0016850B1 (fr) Dérivateur de surtension pour protéger simultanément plusieurs conducteurs
DE9321370U1 (de) Baugruppe zur Ableitung elektrischer Überspannungen
EP0809336A1 (fr) Dérivateur de surtension rempli de gaz, muni d'un dispositif de court-circuit externe
EP0665619A1 (fr) Eclateur de séparation pour limiter la tension maximale appliquée à un dérivateur de surtension
WO2000077900A2 (fr) Dispositif de protection contre les surtensions charge de gaz et dote de connexions d'electrodes sous forme de brides de type bandes
EP0689727B1 (fr) Limiteur de haute tension avec dispositif de court circuit
DE19907319A1 (de) Überspannungsschutzelement
DE19647682C2 (de) Reservefunkenstrecke für einen gasgefüllten Überspannungsableiter und gasgefüllter Drei-Elektroden-Überspannungsableiter mit aufgesetzten Reservefunkenstrecken
DE3637988A1 (de) Anzuendbauteil
DD157647A5 (de) Ueberspannungsableiter mit einer saeule von ableiterelementen und abschirmkoerpern
DE29702309U1 (de) Gasgefüllter Überspannungsableiter mit zwei napfartigen Elektroden
DE2617901A1 (de) Fassung mit kurzschlussbruecke fuer ueberspannungsableiter
DE3704467A1 (de) Kleingluehlampe fuer den betrieb an 220 v wechselspannung
EP0094508A1 (fr) Dérivateur de surtension
DE2530379C3 (de) Schaltungsanordnung mit mehreren Halbleiterbauelementen
DE2708325A1 (de) Lichtbogen-spaltanordnung fuer ueberspannungs-ableiter
DD149766A3 (de) Funkenstreckenstapel fuer ueberspannungsableiter
DE1278596B (de) UEberspannungsableiter

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19980519

17Q First examination report despatched

Effective date: 19980619

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

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: 19990713