EP0847118A1 - Überspannungsableiter - Google Patents

Überspannungsableiter Download PDF

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Publication number
EP0847118A1
EP0847118A1 EP96119584A EP96119584A EP0847118A1 EP 0847118 A1 EP0847118 A1 EP 0847118A1 EP 96119584 A EP96119584 A EP 96119584A EP 96119584 A EP96119584 A EP 96119584A EP 0847118 A1 EP0847118 A1 EP 0847118A1
Authority
EP
European Patent Office
Prior art keywords
surge arrester
ceramic insulator
electrodes
electrode
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.)
Withdrawn
Application number
EP96119584A
Other languages
German (de)
English (en)
French (fr)
Inventor
Angel Alvarez
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.)
Cerberus AG
Original Assignee
Cerberus 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 Cerberus AG filed Critical Cerberus AG
Priority to EP96119584A priority Critical patent/EP0847118A1/de
Priority to IL12215597A priority patent/IL122155A0/xx
Priority to NO975378A priority patent/NO975378L/no
Priority to EP97120689A priority patent/EP0848467A1/de
Priority to HU9702249A priority patent/HUP9702249A3/hu
Priority to CZ973820A priority patent/CZ382097A3/cs
Priority to SK1649-97A priority patent/SK164997A3/sk
Priority to IDP973839A priority patent/ID18092A/id
Priority to PL97323550A priority patent/PL323550A1/xx
Priority to CN97126053A priority patent/CN1185672A/zh
Publication of EP0847118A1 publication Critical patent/EP0847118A1/de
Withdrawn legal-status Critical Current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 present invention relates to a surge arrester with a gas-filled one Ceramic insulator, with two spaced in the ceramic insulator Electrodes, between which a surge voltage occurs forms electrically conductive connection, and with one on the outside of the ceramic insulator provided short-circuit element for establishing a galvanic connection between the two electrodes when a critical for the environment is exceeded Temperature of the surge arrester, which is conductive with one electrode and is connected to the other via an insulating melting body.
  • the main task of such well-known surge arresters is to electrical devices, devices or systems against lightning strikes, high-voltage line contact or to protect the resulting overvoltages.
  • the Surge arresters basically consist of a gas-filled spark gap in which in a gas-tight, insulated housing at least two electrodes at a short distance face each other and normally separate electrically conductive system parts. At If overvoltages occur, a gas discharge takes place between the electrodes, whereby the voltage on the protected system depends on the operating voltage of the Gas discharge is reduced.
  • the invention is now to provide a surge arrester of the type mentioned be, which has the most compact possible form, and when it is installed in a magazine does not pay attention to a special position or position of the surge arrester must become.
  • the ceramic insulator at least has a contact area conductively connected to an electrode, and that the insulating body lies against this contact area.
  • the inventive design of the surge arrester has the advantage that Short-circuit element only reach close to the other electrode and not as before must protrude beyond this. This is the point of a possible short circuit offset inwards from the edge of the surge arrester, so that the occurrence of a Short circuit with adjacent contact parts is prevented.
  • the inventive Surge arresters can be used universally due to their compact design.
  • a first preferred embodiment of the surge arrester according to the invention is characterized in that the ceramic insulator has a contact area at both ends and that the insulating melting body on the connected to the other electrode Contact area.
  • This symmetrical design of the ceramic insulator leads despite the application of two metallization areas to reduce manufacturing costs because of attaching of the short-circuit element does not have to be ensured that this is connected to the correct i.e. is worked on to the electrode opposite the contact area.
  • a second preferred embodiment of the surge arrester according to the invention is characterized in that the diameter of the ceramic insulator is smaller than the diameter of the electrodes and that the melting body is dimensioned so that it only slightly protrudes from the electrodes.
  • This embodiment has the advantage that the short-circuit element from the surge arrester practically no longer protrudes sideways and the compactness of the surge arrester not affected.
  • a third preferred embodiment of the surge arrester according to the invention is characterized in that the contact area or the contact areas by a uniform, the respective end face and the adjoining edge zone of the outer surface of the ceramic insulator covering, metallization layer is formed or are.
  • This embodiment has the advantage that the for soldering the electrodes on the Ceramic insulator required metallization and the contact areas on the outer surface of the ceramic insulator can be applied in one operation. Moreover the electrical conductivity is optimized through the continuous metallization.
  • the two-pole surge arrester 1 shown in FIGS. 1 and 2 consists of a tubular ceramic insulator 2, both ends of which are connected by two metal electrodes 3, 4 are sealed gas-tight by means of high-temperature soldering.
  • the one formed by it The gas discharge space is filled with a noble gas, such as argon or neon.
  • a short-circuit element 5 is provided on one end face of the ceramic insulator 2, to establish a galvanic connection between the two metal electrodes 3, 4 is used when the surge arrester 1 is overloaded.
  • the short-circuit element 5 consists of a spring 6 made of copper beryllium, one end of which is connected to the electrode 4, preferably welded to it, is, and the other end of an insulating melting body 7 made of polypropylene carries and this in the area in front of the electrode 3 from the outside against the ceramic insulator 2 presses.
  • the ceramic insulator 2 is at its ends with one with the respective electrode 3, 4 conductively connected and marked in the figures with a hatching area 8 or 9 provided, the insulating melt body 7 on the with the electrode 3 connected contact area 8 is present.
  • the contact areas 8, 9 are by a respective end face and the adjoining edge zone of the outer surface of the ceramic insulator 2 covering metallization layer formed.
  • the metallization layer consists of an outer layer of nickel and an inner layer for manufacturing a permanent connection between the nickel layer and the ceramic insulator 2.
  • the inner layer is preferably formed by a molybdenum-manganese compound.
  • the surge arrester 1 works in such a way that, in the normal case, between the electrodes 3 and 4 there is no electrical connection.
  • overvoltage conditions occur takes place in the gas discharge space inside the ceramic insulator 2 between the Electrodes 3 and 4 take a gas discharge instead, causing the surge to occur for the protective system is reduced to a safe level. If the surge conditions if the surge arrester 2 heats up so much, that the insulating melting body 7 softens and the spring 6 in conductive connection with the Contact area 8 device, and the electrodes 3 and 4 are electrically connected.
  • the contact areas 8, 9 offer the advantage that the spring 6 for safe manufacture the conductive connection between the two electrodes 3 and 4 can be kept shorter can than before and no longer has to contact the electrode 3 directly. Thereby is the location of a possible short circuit between spring 6 and electrode 3 from The outer edge of the surge arrester 1 is offset inwards and therefore points in a surge arrester arranged adjacent a larger distance on.
  • the three-pole surge arrester 10 shown in FIG. 3 consists of a middle one Electrode 11, two external electrodes 12, two ceramic insulators 2 with contact areas 8 and 9 and a short-circuit element 13, which is used to produce a galvanic connection between the outer electrodes 12 and the middle electrode 11.
  • the Short-circuit element 13 consists of a welded to the middle electrode 11 Spring 6 ', the two ends of which each carry an insulating melting body 7, each of which abuts the contact area 8 conductively connected to the associated outer electrode 12.
  • the materials of the electrodes 11 and 12, the spring 6 'and the insulating melting body 7 are the same as in the two-pole surge arrester shown in FIGS. 1 and 2 1. The same applies to the contact areas 8 and 9 for the two-pole Surge arrester 1 said.
  • the diameter of the ceramic insulators 2 is smaller than the diameter of electrodes 11 and 12, so that the insulating body 7 the edge of the electrodes tower at most slightly.
  • the short-circuit element 13 lies very much close to the ceramic insulators 2 and affects the compactness of the surge arrester 10 practically not.
  • Surge arrester 1 is advantageous if the diameter of the ceramic insulator 2 is smaller is than that of the electrodes 3 and 4, and when the insulating body 7 is the Electrodes only slightly overhanging.

Landscapes

  • Thermistors And Varistors (AREA)
  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP96119584A 1996-12-06 1996-12-06 Überspannungsableiter Withdrawn EP0847118A1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP96119584A EP0847118A1 (de) 1996-12-06 1996-12-06 Überspannungsableiter
IL12215597A IL122155A0 (en) 1996-12-06 1997-11-11 Overvoltage arrester
NO975378A NO975378L (no) 1996-12-06 1997-11-24 Overspenningsavleder
EP97120689A EP0848467A1 (de) 1996-12-06 1997-11-26 Überspannungsableiter
HU9702249A HUP9702249A3 (en) 1996-12-06 1997-11-26 Overvoltage arrester
CZ973820A CZ382097A3 (cs) 1996-12-06 1997-12-02 Bleskojistka
SK1649-97A SK164997A3 (en) 1996-12-06 1997-12-04 Arrester
IDP973839A ID18092A (id) 1996-12-06 1997-12-05 Penangkal petir tegangan-lebih
PL97323550A PL323550A1 (en) 1996-12-06 1997-12-05 Lightning arrester
CN97126053A CN1185672A (zh) 1996-12-06 1997-12-06 过压保护器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96119584A EP0847118A1 (de) 1996-12-06 1996-12-06 Überspannungsableiter

Publications (1)

Publication Number Publication Date
EP0847118A1 true EP0847118A1 (de) 1998-06-10

Family

ID=8223474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119584A Withdrawn EP0847118A1 (de) 1996-12-06 1996-12-06 Überspannungsableiter

Country Status (9)

Country Link
EP (1) EP0847118A1 (xx)
CN (1) CN1185672A (xx)
CZ (1) CZ382097A3 (xx)
HU (1) HUP9702249A3 (xx)
ID (1) ID18092A (xx)
IL (1) IL122155A0 (xx)
NO (1) NO975378L (xx)
PL (1) PL323550A1 (xx)
SK (1) SK164997A3 (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012139287A1 (zh) * 2011-04-13 2012-10-18 上海电科电器科技有限公司 产生触发电弧的元件
DE102017116489B4 (de) * 2017-07-21 2023-03-16 Phoenix Contact Gmbh & Co. Kg Schutzvorrichtung zum Schutz eines elektrischen Verbrauchers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034326A (en) * 1975-04-17 1977-07-05 Comtelco (U.K.) Limited Temperature sensitive trip device
DE3146787A1 (de) * 1981-11-25 1983-06-01 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsableiter mit aeusserer kurzschlussstrecke
WO1988008634A1 (en) * 1987-05-01 1988-11-03 Cooper (U.K.) Limited Gas-filled surge arrestor
FR2625377A1 (fr) * 1987-12-23 1989-06-30 Pendar Sarl Parafoudre de surete
EP0548587A1 (de) 1991-12-24 1993-06-30 Cerberus Ag Überspannungsschutzvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034326A (en) * 1975-04-17 1977-07-05 Comtelco (U.K.) Limited Temperature sensitive trip device
DE3146787A1 (de) * 1981-11-25 1983-06-01 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsableiter mit aeusserer kurzschlussstrecke
WO1988008634A1 (en) * 1987-05-01 1988-11-03 Cooper (U.K.) Limited Gas-filled surge arrestor
FR2625377A1 (fr) * 1987-12-23 1989-06-30 Pendar Sarl Parafoudre de surete
EP0548587A1 (de) 1991-12-24 1993-06-30 Cerberus Ag Überspannungsschutzvorrichtung

Also Published As

Publication number Publication date
HU9702249D0 (en) 1998-01-28
HUP9702249A2 (hu) 1998-07-28
ID18092A (id) 1998-02-26
HUP9702249A3 (en) 2000-03-28
SK164997A3 (en) 1998-07-08
NO975378L (no) 1998-06-08
CN1185672A (zh) 1998-06-24
PL323550A1 (en) 1998-06-08
NO975378D0 (no) 1997-11-24
CZ382097A3 (cs) 1998-06-17
IL122155A0 (en) 1998-04-05

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