WO2015135731A1 - Überspannungsableiter mit schutz vor erwärmung - Google Patents
Überspannungsableiter mit schutz vor erwärmung Download PDFInfo
- Publication number
- WO2015135731A1 WO2015135731A1 PCT/EP2015/053511 EP2015053511W WO2015135731A1 WO 2015135731 A1 WO2015135731 A1 WO 2015135731A1 EP 2015053511 W EP2015053511 W EP 2015053511W WO 2015135731 A1 WO2015135731 A1 WO 2015135731A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shorting bar
- surge arrester
- holding element
- hollow body
- region
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/043—Protection of over-voltage protection device by short-circuiting
-
- 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
- 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 absorber with protection against heating, as soon as a threshold value of a temperature of the surge arrester is exceeded.
- a gas-filled surge arrester usually consists of a tube of ceramic material, which is hermetically sealed at both open sides by one electrode. Inside the
- Ceramic tube may be a noble gas.
- the noble gas is at a anlie ⁇ constricting between the electrodes of the arrester voltage below a threshold value represents a high Wi ⁇ resistor, so that through the arrester, no current flows. If the voltage applied to the electrodes exceeds the level of an ignition voltage, the resistance of the ex ⁇ conductor falls within microseconds to very low values. In the ignited state of the arrester, current peaks of up to several kiloamperes can be dissipated.
- surge arresters after being ignited, can not return to the nonconductive state. This circumstance occurs, for example, when a voltage between the electrodes of the Abieiters permanently above the
- Ignition voltage applied The current then flowing through the arrester for a long time with a high current level can cause the arrester and its surroundings to heat up considerably. If the trap does not clear in time, he may eventually become so hot that it destroys itself be ⁇ relationship as its environment, for example on a scarf ⁇ processing circuit board is heated so much that be ⁇ -sensitive components are destroyed in the area. During extreme heating, even the environment of the drain can be set on fire. To prevent this, make sure that the surge clears in time, so an over ⁇ overheating of Abieiters and its environment can be prevented.
- the object of the present invention is to specify an overvoltage arrester with protection against heating, in which it is ensured that the arrester deletes quickly and reliably when a threshold value of a temperature is exceeded as a result of heating.
- the surge absorber with protection against heating comprises a first electrode for applying a first voltage potential to the surge arrester, a second electrode for applying a second voltage potential to the surge arrester, a shorting bar for shorting the first and second electrodes and a holding element for holding the surge arrester shorting bar.
- the Craigele ⁇ ment is designed such that it is un ⁇ ter holding at a temperature a threshold the shorting bar in a distance from the first and second electrodes and shifts upon exceeding the threshold value of the temperature in relation to the shorting bar such that the shorting bar against the first and second electrode is pressed, causing a short circuit between the first and second electrodes.
- the Matter Kunststoffsabieiter has due to the Kurz gleichbü ⁇ gel and the holding element on a mechanical Kurz gleichme ⁇ mechanism by which he short-circuited at elevated temperature, so that excessive heating of the Abiei ⁇ ters itself and its environment can be prevented.
- the holding element may have a bow-shaped bent region and a support region on which the short-circuiting bar rests at a temperature below the threshold value of the temperature.
- the shorting bar can be shaped such that it rests on the support area of the holding element under a mechanical tension.
- the materials of the retaining element expand in such a way that the
- the holding member releases the shorting bar so that it now ⁇ against due to the mechanical preload the first and second electrodes are pressed causing a short circuit between the first and second electrodes.
- the holding element may contain materials that expand differently when heated, so that the holding element, in particular the bent portion of the support ⁇ elements, is bent relative to the original state.
- the holding element may for example contain a material made of a thermo-bimetal.
- the surge arrester may comprise a hollow body having a cavity which is hermetically sealed at both open ends by the first and second electrodes. Inside the cavity may be a noble gas.
- the shorting bar and the Hal ⁇ teelement can be firmly connected to each other at least one of its sections, so that the short-circuit mechanism consists of holding element and shorting bar only of a single component.
- the shorting bar and the holding element can be welded together, for example, at one point.
- the shorting bar and the holding element can be attached to the hollow ⁇ body of the surge arrester.
- the short-circuit bar can be shaped or bent such that it is held with a bias on the support region of the holding element at a distance from the first and second electrode, as long as the temperature of the Abieiters is below the threshold.
- the threshold value of the temperature comparable to the holding element or the Auflagebe ⁇ rich of the holding member slides in such a way that the standing under mechanical tension shorting bar immediately released, and thus the distance between the first and second elec- Rode of the Abieiter is bridged very fast. Due to the fast-closing contact, arcing during approach and thus material erosion can be prevented.
- the shorting mechanism made of shorting bar and Halteele ⁇ ment can be mounted in particular as part of a 3-Elektrodenableiters on a hollow body of the 3-Elektrodenableiters.
- the hollow body has a first and second part body and a metal ring arranged between the two part bodies, which forms the third electrode.
- the short ⁇ iron is attached to a position on the holding element, which is arranged on the metallic ring.
- FIG. 1 shows an embodiment of a surge arrester with protection against heating in a longitudinal view prior to the triggering of the short-circuit mechanism
- FIG. 2 shows an embodiment of a surge arrester with protection against heating in a transverse view before triggering the short-circuit mechanism
- FIG. 3 shows an embodiment of a surge arrester with protection against heating in a longitudinal view after the triggering of the short circuit mechanism
- FIG. 4 shows an embodiment of a surge arrester with protection against heating in a transverse view after the triggering of the short circuit mechanism.
- FIG. 1 shows a longitudinal view and FIG. 2 shows the corresponding transverse view of an embodiment of a surge arrester 1 with protection against heating with a short-circuit mechanism, by means of which the drain can be short-circuited at elevated temperature, so that further and excessive heating of the drainage component is prevented.
- the surge arrester 1 comprises an electrode 10 for applying a first voltage potential to the drain and a second electrode 20 for applying a second voltage potential ⁇ to the Abieiter.
- the first and second electrodes 10, 20 are arranged on the open sides of a hollow body 50 of the Abieiters.
- the hollow body 50 has a cavity 53 between a first opening 51 and a second opening 52 of the hollow body.
- the hollow body 50 may be formed, for example, as a tube made of a ceramic material.
- the first opening 51 of the hollow body 50 is covered by the first electrode 10.
- the second opening 52 of the hollow body 50 is covered by the second electrode 20.
- the first and second electrodes 10, 20 are arranged on the open sides 51, 52 of the hollow body such that the cavity 53 is hermetically sealed by the first and second electrodes.
- a gas such as a noble gas, may be located in the cavity 53.
- the electrode 10 is connected to an electrical see conductor 2 connected to the Abieiter for applying the first voltage potential.
- an electrical conductor 3 for applying the second voltage potential to the Abieiter is arranged.
- the surge arrester is designed as a so-called 3-electrode arrester.
- the hollow body 50 has a first partial body 54 in the form of a hollow cylinder and a second partial body 55 in the form of a hollow body, each made of a ceramic material, and additionally comprises a metallic ring 56 which forms a third electrode of the Abieiters.
- a line 4 for supplying a third voltage potential is arranged.
- the 3-lead electrode driving an earth-ester Bezie ⁇ hung, ground potential is applied, for example, at the third electrode.
- the first part body 54 of the hollow body 50 comprises the first opening 51 which is covered by the first electrode 10 and a further opening 57.
- the second part body 55 of the hollow body 50 has the second opening 52 of the hollow body which is covered by the second electrode 20 is, and additionally includes a further opening 58.
- the metallic ring 56 is disposed between the further opening 57 of the first part body 54 and the further opening 58 of the second part body 55. Thus, there is a continuous cavity between the first opening 51 and the second opening 52.
- the first and the second partial body 54, 55 may have the same outer diameter.
- the metallic ring 56 which forms the third electrode of the surge arrester, can have a larger outer diameter than the first and second body parts 54, 55. As a result, an edge 560 of the metallic ring 56 protrudes from the planar surface of the first and second part-bodies 54, 55.
- the inner diameter of the metallic ring 56 may be smaller than the inner diameter of the first and second part of the body so that the in ⁇ nenmpmesser of the hollow body 50 in the region of the metallic ring / the third electrode 56 is smaller than the area of the first and second sub-body 54 , 55.
- the gas-filled surge arrester 1 shown in FIGS. 1 and 2 operates on the gas-physical principle of the arc discharge. Electrically, the surge arrester behaves like a voltage-dependent switch.
- Ignition voltage applied it may happen that the surge arrester after ignition is not returned to the non-conductive state. Due to the high current level of the current flowing between the first and second electrodes 10, 20 or, in the case of the 3-electrode arrester, between the first and second electrodes 10, 20 and the third electrode 30 of the arrester, it is possible for an excessively large current to flow through the collector Warming occur, which can destroy the Abieiter or even cause a fire.
- the surge arrester In order to prevent excessive heating of the surge arrester, it has a mechanical short-circuit mechanism in the form of a shorting bar 30 for short-circuiting the first and second electrodes 10, 20 and a holding element 40 for holding the shorting bar 30.
- the shorting bar 30 In the embodiment of a 3-electrode arrester shown in FIGS. 1 and 2, the shorting bar 30 is designed to short-circuit the first electrode 10, the second electrode 20 and the third electrode 30.
- the short-circuiting bar 30 is shaped in such a way that it is pressed against the holding element 40 while standing under a mechanical stress, as long as the temperature of the arrester is below the threshold value.
- the holding element 40 is configured such that it keeps at a temperature below the threshold value of the temperature, the shorting bar 30, which is pressed against the holding element due to the mechanical bias, at a distance from the first and second electrodes 10, 20.
- FIG. 3 shows the surge arrester shown in FIG. 1 in a longitudinal view after the triggering of the short-circuiting mechanism.
- FIG. 4 shows a transverse view of the overlay voltage diverter of Figure 3 after the triggering of the short-circuiting mechanism.
- the holding element 40 is asbil ⁇ det, that the holding element when crossing the
- Threshold of the temperature relative to the shorting bar 30 shifts so that the shorting bar 30 is freely gege ⁇ ben and pressed due to the mechanical stress against the first and second electrode.
- the Kurz practitionerbü ⁇ gel then forms a low-resistance connection between the first and second electrode. This creates a short circuit between the first and second electrodes 10, 20.
- the shorting bar 30 has a bridging area 31 for electrically bridging a distance between the first and second electrodes 10, 20.
- the shorting bar 30 and the holding member 40 may be formed such that the bridging portion 31 of the shorting bar is maintained under mechanical stress from the holding member 40 at a distance from the first and second electrodes 10, 20 when the temperature of the puller is below the threshold value the temperature is.
- the bridging portion 31 of shorting bar 30 may have ei ⁇ NEN first end portion 311 and a second end portion 312 as well as a reasonable arranged between the first and second end portion 311, center portion 312 313th
- the first and the second end portion 311, 312 of the bridging region 31 of the short ⁇ circuiting link are bent away from a plane in which the center part 313 of the bridging portion 31 of shorting bar is arranged and in the direction of the first and second elec- rode 10, 20 bent towards.
- the bridging region 31 contains a low-resistance material so that it short-circuits the distance between the electrodes 10 and 20.
- the holding element 40 may have a region 41 resting against the hollow body 50.
- the region 41 of the holding element 40 may abut, for example, approximately one quarter of the circumference of the hollow body 50.
- the holding element 40 can have a bent region 42 adjoining the region 41, which is bent away from the surface of the hollow body 50 and bent toward the bridging region 31 of the shorting bar 30.
- the retaining element 40 may moreover have a bearing region 43 which adjoins the bent region 42 and on which the bridging region 31 of the short-circuiting strap 30 rests on the retaining element 40 when the temperature drops below the
- Threshold is.
- the support area 43 may have a larger area compared to the bent area 42.
- the support regions 42 may be formed merely as an extension of the bent region 42.
- the holding member 40 may be formed according to a possible execution ⁇ shape such that the bent portion bending at the exceeding of the threshold value of the temperature with respect to the bridging portion 31 of the short-circuit clip 30 such 42 and / or at least the supporting portion 43 of the holding member 40 that the Matterbschungsbe ⁇ rich 31 of shorting bar 30 from slipping off the support portion 43 of the holding member 40 and is pressed against the first and second electrodes 10, 20 due to its mechanical ⁇ rule bias.
- the holding element 40 may be formed, for example, as a wire bow, on the support area 43 of the bridging region 31 of the shorting bar when deactivated Short circuit mechanism rests, so that the bridging region of the shorting bar to the first and second Elektode ⁇ 10, 20 is arranged spaced.
- the holding member 40 may include, for example, a material of a thermo-bimetal.
- the shorting bar 30 may have a holding area 32, on which the bridging area 31 of the shorting bar is arranged.
- the holding region 32 of the KurzMANbü ⁇ gel may have a support portion 323, which rests on the surface of the hollow body 50.
- the holding portion 32 of shorting bar may have a cut Befest Trentsab ⁇ 324 which is fixed to the appended on the surface of the hollow body 50 portion 41 of the retaining member 40, have.
- the shorting bar 30 is fixedly connected to the holding member 40.
- the shorting bar can, for example, on the Befest Trentsab ⁇ section 324 to the holding element, in particular at the abutting on the hollow body 50 portion 41 of the holding member 40 to be welded.
- the shorting bar may be present at the Fixed To ⁇ supply section 324 to the hollow body 50th
- the holding region 32 of the shorting bar can furthermore have an end section 325, on which the bridging region 31 of the shorting bar is arranged.
- the Studentsbrü ⁇ ckungs Society 31 of shorting bar may be formed for example as a wire or a plate which in itself connects the end portion 325 of the holding portion 32.
- the bridging portion 31 of shorting bar may ⁇ example, at the end portion 325 of the holding portion of his closing strap soldered or welded short ⁇ .
- the bridging region 31 of the shorting bar can, for example, be arranged at right angles to the holding region 32.
- the short-circuit bar 30 may be bent in such a way that a section between the support section 323 and the fastening section 324 is bent away from the hollow body 50 and spaced therefrom, so that this region does not bear against the hollow body. Furthermore, the shorting bar 30 can be bent such that the end portion 325 and a cut from ⁇ between the end portion 325 and the Befest Trentsab- section 324 of the region 41 of the holding member 40 is beab ⁇ standet.
- the shorting bar 30 is bent between the resting portion 323 and the end portion 325 of the holding portion 32 so that the bridging portion 31 of the shorting bar is pressed under mechanical tension against the supporting portion 43 of the holding member 40 when the temperature is below the threshold.
- the holding region 32 of the shorting bar may be formed as a wire, which is bent around the hollow body 50 as shown in FIGS. 1 to 4.
- the Haltebe ⁇ rich 32 may be bent, for example, c-shaped around the hollow body.
- the holding region 32 of the shorting bar can abut the fastening portion 324 on the hollow body 50.
- the surge arrester as a 3-
- the electrode 41 is the region 41 of the holding member 40 on the metallic ring 56 of the hollow body 50, which forms the third electrode of the Abieiters on. As indicated by the financial Guren 2 and 4 is shown, the region 41 of the Halteele ⁇ element 40 is located at about a quarter of the circumference of the metallic ring 56 of the hollow body 50 at.
- the holding element 40 is fixedly connected at the region 41 to the hollow body 50, in particular the metallic ring 56.
- the region 41 of the holding element 40 may, for example, be welded to the metallic ring 56 in the embodiment of the 3-electrode arrester.
- the holding portion 32 of shorting bar 30 is connected at the off ⁇ guide die of the surge arrester as a 3-Elektrodenab- conductor on the mounting portion 324 with the voltage applied to the electrode 56 drit ⁇ th region 41 of the retaining element.
- the short-circuit bar is electrically connected to the third electrode 56.
- FIG Holding portion 32 of the shorting bar 30 has a first web 321 and a second web 322, wherein the second web 322 is spaced from the first web 321 by a gap width.
- Shorting bar 30 is in particular in such a way arranged on the hollow body 50 of the 3-electrode driving lead diester that the me ⁇ -metallic ring 56 and the holding member 40 between the first and second web 321, 322 of the holding portion 32 of the disposed short ⁇ circuit clip.
- the bridging portion 31 of the shorting bar is disposed at the respective end portions 325 of the first and second ridges 321, 322.
- the first and second web 321, 322 may be connected by a narrow intermediate web 326 behind the respective support portion 323 of the two webs together.
- the entire short circuit mechanism in the surge arrester according to the invention consists only of a single component, in particular when assembling the surge arrester as a whole on the hollow body and in the embodiment of the 3-electrode arrester can be attached to the metallic ring 56 of the hollow ⁇ body.
- the short-circuit mechanism of the shorting bar 30 and the holding element 40 it is possible to detect the exceeding of a threshold value of a tempera ture and to activate the short circuit between the first and second electrode.
- a soldering pellet removes a shorting bar from contact with the
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/123,169 US10148085B2 (en) | 2014-03-13 | 2015-02-19 | Surge arrester having protection against heating |
JP2016557021A JP6313469B2 (ja) | 2014-03-13 | 2015-02-19 | 加熱に対する保護を有するサージ電圧避雷器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014103419.8 | 2014-03-13 | ||
DE102014103419.8A DE102014103419B4 (de) | 2014-03-13 | 2014-03-13 | Überspannungsableiter mit Schutz vor Erwärmung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015135731A1 true WO2015135731A1 (de) | 2015-09-17 |
Family
ID=52477812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/053511 WO2015135731A1 (de) | 2014-03-13 | 2015-02-19 | Überspannungsableiter mit schutz vor erwärmung |
Country Status (4)
Country | Link |
---|---|
US (1) | US10148085B2 (de) |
JP (1) | JP6313469B2 (de) |
DE (1) | DE102014103419B4 (de) |
WO (1) | WO2015135731A1 (de) |
Citations (3)
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 |
WO1987006399A1 (en) * | 1986-04-09 | 1987-10-22 | Schaltbau Gesellschaft Mbh | Device for protecting a surge arrester against overheating |
DE102008022794A1 (de) * | 2008-01-31 | 2009-08-06 | Epcos Ag | Elektrisches Schutzbauelement mit Kurzschlusseinrichtung |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1018521B (de) | 1954-03-23 | 1957-10-31 | Krone Kg | Anordnung zum Schutz von Fernmeldeanlagen gegen direkte Starkstrombeeinflussung |
DE4118738C1 (de) | 1991-06-05 | 1992-12-24 | Krone Ag, 1000 Berlin, De | |
PT797379E (pt) | 1996-03-18 | 2003-02-28 | Krone Gmbh | Placa de circuitos impressos para a colocacao na posicao exacta e a soldadura de componentes electronicos na superficie da placa de circuitos impressos |
DE19620340C1 (de) | 1996-05-21 | 1997-10-16 | Krone Ag | Überspannungs - Schutzstecker |
DE19708651A1 (de) * | 1997-02-21 | 1998-09-03 | Siemens Ag | Gasgefüllter Überspannungsableiter mit äußerer Kurzschlußeinrichtung |
DE10104574A1 (de) * | 2001-02-01 | 2002-08-08 | Epcos Ag | Substrat für ein elektrisches Bauelement und Verfahren zur Herstellung |
US7974063B2 (en) * | 2007-11-16 | 2011-07-05 | Corning Cable Systems, Llc | Hybrid surge protector for a network interface device |
DE102008022833A1 (de) * | 2008-01-31 | 2009-08-06 | Epcos Ag | Elektrisches Schutzbauelement mit Kurzschlussseinrichtung |
DE102008062491A1 (de) * | 2008-12-16 | 2010-06-17 | Epcos Ag | Überspannungsableiter mit einer Kurzschlusseinrichtung |
JP5248374B2 (ja) * | 2009-03-13 | 2013-07-31 | 新光電気工業株式会社 | 3極避*** |
DE102012110845A1 (de) * | 2012-11-12 | 2014-05-15 | Epcos Ag | Temperaturfühler und Verfahren zur Herstellung eines Temperaturfühlers |
-
2014
- 2014-03-13 DE DE102014103419.8A patent/DE102014103419B4/de active Active
-
2015
- 2015-02-19 WO PCT/EP2015/053511 patent/WO2015135731A1/de active Application Filing
- 2015-02-19 US US15/123,169 patent/US10148085B2/en active Active
- 2015-02-19 JP JP2016557021A patent/JP6313469B2/ja active Active
Patent Citations (3)
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 |
WO1987006399A1 (en) * | 1986-04-09 | 1987-10-22 | Schaltbau Gesellschaft Mbh | Device for protecting a surge arrester against overheating |
DE102008022794A1 (de) * | 2008-01-31 | 2009-08-06 | Epcos Ag | Elektrisches Schutzbauelement mit Kurzschlusseinrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE102014103419A1 (de) | 2015-09-17 |
DE102014103419B4 (de) | 2018-05-24 |
JP6313469B2 (ja) | 2018-04-18 |
US10148085B2 (en) | 2018-12-04 |
US20170117703A1 (en) | 2017-04-27 |
JP2017508255A (ja) | 2017-03-23 |
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