EP2689502A1 - Surge arrester with a low response voltage, and method for producing same - Google Patents
Surge arrester with a low response voltage, and method for producing sameInfo
- Publication number
- EP2689502A1 EP2689502A1 EP12712619.1A EP12712619A EP2689502A1 EP 2689502 A1 EP2689502 A1 EP 2689502A1 EP 12712619 A EP12712619 A EP 12712619A EP 2689502 A1 EP2689502 A1 EP 2689502A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- surge arrester
- metallic material
- electrodes
- cavity
- 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.)
- Granted
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
- H01T1/20—Means for starting arc or facilitating ignition of spark gap
- H01T1/22—Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
-
- 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
- H01T1/24—Selection of materials for electrodes
-
- 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 relates to a surge arrester with low operating voltage and a method for its preparation.
- Ignition voltage to an arcing between two or three electrodes.
- the limit voltage is at static or stationary stress with a rise of the voltage of 100 V / s as An Anlagen Eisenschreib Uag and at
- the arc is maintained by the feeding current as long as the electrical conditions for the arc are met.
- the surge arrester has a cavity which is formed by at least one insulating body.
- the electrode spacing In the cavity extending from the sides of two electrodes, which are oriented with their free ends to each other and from each other at a distance, the electrode spacing, have.
- the electrodes In particular, the electrodes have the same longitudinal axis. In areas of the free ends, the electrodes contain several different metallic materials. In one embodiment, each metallic material is embedded in another metallic material. Preferably, the embedding takes place in one or more
- Electrodes cavities In particular, two or three
- the insulating body consists of one piece or, in particular, when a center electrode in the region of
- Electrode spacing is provided, of two pieces.
- the at least one insulating body is formed of ceramic.
- the at least one insulating body is tubular and in particular cylindrical
- the electrodes are preferably rod-shaped
- the electrodes of the surge arrester are at their respective non-free ends with one end of the
- the non-free ends of the electrodes have a flange, which is connected in a gas-tight manner to the at least one insulating body.
- each flange has a connection, in particular with screw thread, on, with which the surge arrester or its electrodes can be electrically contacted.
- the surge arrester is set up for the following properties or tasks.
- the DC response voltage is between 55 volts and 70 volts, and the threshold surge voltage is less than 700 volts.
- the pulse load capacity at a current load is 100 kA (kilo-ampere) at one
- Shock waveform 10 ⁇ 3 / 350 ⁇ 3, i. a rise time of 10 ⁇ and a back half-life of 350 ⁇ , is the
- This surge arrester is suitable for use in a potentially explosive environment since sparking does not occur outside of the surge arrester, even in the event of a flashover between the internal electrodes.
- the surge arrester allows for the first time the fulfillment of the aforementioned extreme tasks. This makes it possible to use the surge arrester as a single device in areas where previously more expensive
- each of the electrodes includes a first metallic material and a second metallic material in an electrode cavity of the first metal extending from the free end into the electrode Material. This makes it possible to select and set up the two metallic materials to the predetermined threshold voltages and the current pulse load.
- Materials preferably have different melting points. This ensures depending on the location of the foot of a
- the second metallic material melts at lower sustained load rather than the more outwardly disposed first metallic material. At higher currents migrates
- the electrodes have the same
- the longitudinal axis and the melting points of the different metallic materials increase from the longitudinal axis
- the surge arrester is preferably arranged such that in the case of its response, a discharge at two opposite areas of the second metallic
- this also includes the first metallic material, which is preferably designed with regard to a higher current carrying capacity than the first metallic material.
- the electrode cavity of an electrode of the surge arrester is shaped so that the second
- metallic material is low-resistance and mechanically firmly connected to the first metallic material. This makes it possible to optimize the electrical properties of the electrodes and the parameters of the surge arrester.
- the electrode cavity of the surge arrester has an undercut into which the second metallic material engages. This allows a very strong mechanical or non-positive
- the second metallic material is sintered in the electrode cavity. This allows a lot good electrical and mechanical connection of the two metallic materials.
- the first metallic material of the electrodes comprises an iron-nickel alloy. This is characterized by a large
- Insulating body connected in a gastight manner, the following
- Steps are performed. It will be a
- Electrode or by welding or soldering a ring on an electrode body Then, a metallic paste is filled in the electrode cavity thus formed and the Surface of the metallic paste structured. Then, an activating mass is introduced into the structures of the surface of the metallic paste. After at least one of the steps, starting with the filling of the metallic paste, the electrode is sintered. Subsequently, the
- a copper paste is introduced and sintered into an electrode cavity of an iron-nickel alloy electrode.
- a wafer structure in particular a waffle, is pressed into the sintered copper paste by means of a tool.
- the electrode activation mass is introduced into the wafer structure with a drop-paste. This is followed by a final sintering process.
- each electrode is designed to be assembled.
- the embodiment makes it possible, by using different metals or
- Insulator contains multiple ignition strips. The ignition strips extend into the discharge back space on both sides of the electrode gap.
- FIG. 1 shows a sketch of a surge arrester in FIG.
- FIG. 2 shows an electrode of a surge arrester with flange and external connection
- Figure 3 shows a schematic representation of the current-time characteristic of a surge arrester.
- Surge arrester 1 shown in the (partial) cross section.
- the surge arrester has two of a plurality of each
- Parts 2a, 2b, 2c and 3a, 3b, 3c composite or
- each electrode closes by means of a VerInstitutlötung 4 a tubular insulating body 5 with a cavity 6 on both sides. The thus formed interior of the
- Surge arrester is gas-tight and contains a gas made entirely of neon with a small amount
- the insulating body 5 Admixture of argon.
- the insulating body 5 is made of
- Electrode is a threaded bolt or screw body
- Each electrode 2, 3 comprises an iron-nickel alloy.
- Each inner electrode 2a, 3a is rod-shaped made of the iron-nickel alloy as the first metallic material and includes an electrode cavity 7 having a
- a sintered copper paste 10 is arranged as the second metallic material, which enters into an intimate or non-positive mechanical as well as a good electrical connection with the first metallic material with the aid of the undercut 7a and a central blind hole 8.
- the undercut is provided so that the copper paste does not remain at a response of the surge arrester and the associated high currents and forces in the electrode
- the blind hole 8 supports this through the enlarged area between the first and the second metallic material.
- Electrode distance A at their free ends, is 0.5 mm.
- the insulating body 5 has on its inner wall a plurality of distributed over its circumference and arranged in the longitudinal direction of ignition 9. The ignition strokes are none of the
- Electrodes electrically connected.
- the electrode 2 or 3 has the structure described according to FIG.
- a sintered copper paste 10 is disposed in the electrode cavity. After introducing a flux-free copper paste into the electrode cavity, the copper paste is sintered several times and ground on its surface. The copper paste 10 at the free end of
- Electrode forms a matrix for an activation mass 11, which preferably has a large area in a waffle structure of the
- the waffle is made by means of a tool after the first sintering of the copper paste
- Pastes sintered copper paste with the activating compound contains silicates and halides.
- Included materials are in particular nickel, titanium, barium aluminate, barium titanate, sodium, potassium and
- the overvoltage arrester has the following characteristics: operating voltage Uag between 55 V and 70 V, response impulse voltage below 700 V, pulse load capacity 100 kA at a standard current pulse of Waveform 8/20 ⁇ is and 50 kA for a standard current pulse of the waveform 10/350 ⁇ .
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011014582A DE102011014582A1 (en) | 2011-03-21 | 2011-03-21 | Surge arrester with low response voltage and method for its preparation |
PCT/EP2012/055011 WO2012126952A1 (en) | 2011-03-21 | 2012-03-21 | Surge arrester with a low response voltage, and method for producing same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2689502A1 true EP2689502A1 (en) | 2014-01-29 |
EP2689502B1 EP2689502B1 (en) | 2015-05-06 |
Family
ID=45932305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120712619 Active EP2689502B1 (en) | 2011-03-21 | 2012-03-21 | Surge arrester with a low response voltage, and method for producing same |
Country Status (6)
Country | Link |
---|---|
US (1) | US9190811B2 (en) |
EP (1) | EP2689502B1 (en) |
JP (1) | JP5707533B2 (en) |
CN (1) | CN103430407B (en) |
DE (1) | DE102011014582A1 (en) |
WO (1) | WO2012126952A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6657746B2 (en) | 2015-10-09 | 2020-03-04 | 三菱マテリアル株式会社 | Discharge tube |
DE102017115035A1 (en) * | 2017-07-05 | 2019-01-10 | Tdk Electronics Ag | arrester |
CN114765085A (en) * | 2021-01-11 | 2022-07-19 | 国巨电子(中国)有限公司 | Igniter resistor and method of making same |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1582128A (en) | 1968-06-18 | 1969-09-26 | ||
DE1950090C3 (en) * | 1969-10-03 | 1979-09-27 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Gas discharge tube |
US3989973A (en) * | 1971-01-02 | 1976-11-02 | Siemens Aktiengesellschaft | Cold-cathode gas-discharge device |
DE2639816A1 (en) * | 1976-09-03 | 1978-03-16 | Siemens Ag | Gas discharge surge arrester in button housing - using electrodes coated with paste contg. a semiconducting cpd. |
DE2834088A1 (en) * | 1978-08-03 | 1980-02-14 | Siemens Ag | GAS DISCHARGE PIPES, IN PARTICULAR SURGE PROTECTORS |
JPS5824989U (en) * | 1981-08-11 | 1983-02-17 | 株式会社白山製作所 | gas-filled discharge tube |
JPS58204483A (en) * | 1982-05-25 | 1983-11-29 | 株式会社 水戸テツク | Arresting tube |
JPS62112880A (en) | 1985-11-12 | 1987-05-23 | トステム株式会社 | Novel window frame fixture in remodeling of window |
JPH0226150Y2 (en) * | 1985-12-28 | 1990-07-17 | ||
US4837050A (en) * | 1986-09-30 | 1989-06-06 | Asahi Chemical Research Laboratory Co., Ltd. | Method for producing electrically conductive circuits on a base board |
DE69833427T2 (en) * | 1997-03-31 | 2006-09-28 | Tdk Corp. | NON-DISTRESSING CERAMIC DIELEKTRIUM |
DE19741658A1 (en) * | 1997-09-16 | 1999-03-18 | Siemens Ag | Gas-filled discharge gap e.g. spark gap or surge diverter |
JP2000188169A (en) * | 1998-12-21 | 2000-07-04 | Tokin Corp | Surge absorbing element |
DE10159260A1 (en) * | 2001-12-03 | 2003-06-18 | Epcos Ag | Electrode and electrical component with the electrode |
JP4161696B2 (en) * | 2002-11-29 | 2008-10-08 | 三菱マテリアル株式会社 | Chip-type surge absorber and manufacturing method thereof |
JP4651434B2 (en) * | 2005-03-31 | 2011-03-16 | 岡谷電機産業株式会社 | Discharge tube |
CN100463326C (en) * | 2005-08-11 | 2009-02-18 | 西安交通大学 | Concave, convex shaped or biconcave groove electrode overvoltage protection device under vacuum environment |
JP2009508320A (en) * | 2005-09-14 | 2009-02-26 | リッテルフューズ,インコーポレイティド | Surge arrester with gas, activation compound, ignition stripe and method thereof |
DE102007063316A1 (en) | 2007-12-28 | 2009-07-02 | Epcos Ag | Surge arrester with low response voltage |
-
2011
- 2011-03-21 DE DE102011014582A patent/DE102011014582A1/en not_active Ceased
-
2012
- 2012-03-21 EP EP20120712619 patent/EP2689502B1/en active Active
- 2012-03-21 JP JP2014500374A patent/JP5707533B2/en not_active Expired - Fee Related
- 2012-03-21 CN CN201280013998.8A patent/CN103430407B/en active Active
- 2012-03-21 US US14/006,262 patent/US9190811B2/en active Active
- 2012-03-21 WO PCT/EP2012/055011 patent/WO2012126952A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012126952A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012126952A1 (en) | 2012-09-27 |
EP2689502B1 (en) | 2015-05-06 |
US20140063675A1 (en) | 2014-03-06 |
DE102011014582A1 (en) | 2012-09-27 |
JP2014509063A (en) | 2014-04-10 |
US9190811B2 (en) | 2015-11-17 |
JP5707533B2 (en) | 2015-04-30 |
CN103430407A (en) | 2013-12-04 |
CN103430407B (en) | 2015-08-12 |
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