EP1423894A1 - Überspannungsschutzeinrichtung - Google Patents
ÜberspannungsschutzeinrichtungInfo
- Publication number
- EP1423894A1 EP1423894A1 EP02797632A EP02797632A EP1423894A1 EP 1423894 A1 EP1423894 A1 EP 1423894A1 EP 02797632 A EP02797632 A EP 02797632A EP 02797632 A EP02797632 A EP 02797632A EP 1423894 A1 EP1423894 A1 EP 1423894A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ignition element
- electrode
- protection device
- overvoltage protection
- 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.)
- 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
- 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
-
- 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 an overvoltage protection device with a first electrode, with a second electrode and with an air breakdown spark gap existing or effective between the two electrodes, an arc being formed when the air breakdown spark gap is ignited between the two electrodes.
- Electrical, but in particular electronic measuring, control, regulating and switching circuits are sensitive to transient overvoltages, as can occur in particular due to atmospheric discharges, but also due to switching operations or short circuits in energy supply networks.
- This sensitivity has increased to the extent that electronic components, in particular transistors and thyristors, are used; Above all, increasingly used integrated circuits are endangered to a great extent by transient overvoltages.
- Overvoltages are all voltages that are above the upper tolerance limit of the nominal voltage. Above all, this also includes the transient overvoltages that can occur due to atmospheric discharges, but also as a result of switching operations or short circuits in power supply networks, and which can be galvanically, inductively or capacitively coupled into electrical circuits.
- surge protection devices In order to protect electrical or electronic circuits, in particular electronic measuring, control, regulating and switching circuits, especially also telecommunication devices and systems, wherever they are used, against transient overvoltages, surge protection devices have been developed and have been in use for more than twenty years Years known.
- the type in question is at least one spark gap which responds to a certain overvoltage, the response voltage, and thus prevents that overvoltages occur in the circuit protected by an overvoltage protection device which are greater than the response voltage of the spark gap.
- the overvoltage protection device has two electrodes and an air breakdown spark gap which exists or is effective between the two electrodes.
- Air-breakdown spark gap is generally a breakdown spark gap; A breakdown spark gap should therefore also be included, in which not gas but another gas is present between the electrodes.
- surge protection devices with an air breakdown spark gap there are surge protection devices with an air flashover spark gap in which a sliding discharge occurs when activated.
- Overvoltage protection devices with an air breakdown spark gap have the advantage of a higher surge current carrying capacity compared to overvoltage protection devices with an air flashover spark gap, but the disadvantage of a higher - and not particularly constant - response voltage. For this reason, various overvoltage protection devices with an air breakdown spark gap have already been proposed, which have been improved with regard to the response voltage. Ignition aids have been implemented in various ways in the area of the electrodes or the air breakdown spark gap that acts between the electrodes. B.
- the previously mentioned ignition aids provided in the known surge protection devices can be referred to as “passive ignition aids”, “passive ignition aids” because they do not respond “actively” themselves, but only respond by an overvoltage that occurs at the main electrodes.
- Passive ignition aids From German Offenlegungsschrift 198 03 636 an overvoltage protection device with two electrodes, with an air breakdown spark gap effective between the two electrodes and an ignition aid is also known.
- the ignition aid in contrast to the ignition aids which trigger a sliding discharge, is designed as an "active ignition aid", namely in that two ignition electrodes are provided in addition to the two electrodes - referred to there as the main electrodes. These two ignition electrodes form a second air breakdown spark gap, which serves as a spark gap.
- the ignition aid includes, in addition to the spark gap, an ignition circuit with an ignition switching element.
- the ignition circuit with the ignition switching element responds to the ignition spark gap.
- the ignition spark gap or the two ignition electrodes are arranged with respect to the two main electrodes in such a way that the air breakdown spark gap between the two main electrodes, called the main spark gap, responds because the spark gap has responded.
- the response of the spark gap leads to ionization of the air present in the air breakdown spark gap, so that - suddenly - after the spark gap has tripped, the air breakdown spark gap between the two main electrodes, i.e. the main spark gap, also responds.
- the ignition aids lead to an improved, namely lower and more constant response voltage.
- the overvoltage protection device known from German Offenlegungsschrift 44 02 615 has two narrow electrodes which are each angularly shaped and each have a spark horn and an angled connecting leg.
- the spark horns of the electrodes are provided with a hole in their areas adjacent to the connecting legs.
- the holes provided in the spark horns of the electrodes ensure that when the overvoltage protection element responds, ie when it is triggered, the resulting arc is "set in motion" by a thermal pressure effect, that is to say moves away from its point of origin. Since the spark horns of the electrodes are arranged in a V-shape relative to one another, the distance to be bridged by the arc is thus increased when the arc migrates out, which also increases the arc voltage.
- Another way of extinguishing the arc after the discharge process is to cool the arc by the cooling effect of the insulating walls and the use of gas-emitting insulating materials. This requires a strong flow of the extinguishing gas, which requires a great deal of design.
- This known surge protection device is one with a main spark gap, with a secondary spark gap which ignites the main spark gap and with a housing which accommodates the main spark gap and the secondary spark gap, the main spark gap comprising a first main electrode, a second main electrode and an existing or between the main electrodes has an effective air breakdown spark gap and when the air breakdown spark gap is ignited, an arc arises between the first main electrode and the second main electrode, the secondary spark gap comprising a first secondary electrode, a second secondary electrode and an existing or effective one between the secondary electrodes has second air breakdown spark gap and ignition of the second air breakdown spark gap leads to ignition of the first air breakdown spark gap and wherein the second secondary electrode via at least one impedance, directly or indire kt, is connected to the second main electrode.
- the invention is based on the object of providing an overvoltage protection device of the type described at the outset in a particularly simple manner with a particularly simple-acting ignition aid.
- the overvoltage protection device according to the invention in which the above-mentioned object is achieved, is first and essentially characterized in that the series connection of a voltage switching element and an ignition element is provided between the two electrodes.
- the voltage switching element is selected or dimensioned such that it becomes conductive at the response voltage of the overvoltage protection device, that is to say "switches".
- a varistor, a surpressor diode or a gas-filled voltage arrester can be provided as the voltage switching element.
- the ignition element that it consists of an electrically conductive material and must be resistant to arcing; it must also be ensured that the ignition element cannot weld or fuse with the electrode assigned to it, that is to say with the electrode with which it is in electrically conductive contact.
- the ignition element and / or the electrode assigned to the ignition element preferably consists of an electrically conductive ceramic material, a non-welding metallic material and / or an electrically conductive plastic. In addition, it is preferably ensured that there is a permanent contact resistance between the ignition element and the electrode assigned to the ignition element.
- the voltage switching element responds so that a leakage current begins to flow via the series connection of the first electrode - voltage switching element - ignition element - second electrode; Overvoltages with low energy content are therefore over the previously written series connection derived. If the energy content of the overvoltage present at the overvoltage protection device is greater, a correspondingly larger current flows. Because of the high contact resistance at the contact point, this current leads to discharges at the contact point between the ignition element and the associated electrode, which lead to preionization of the contact area, so that an arc is formed which bridges the contact point. Because of the not inconsiderable resistance of the ignition element, the arc migrates to the ignition element in order to bridge its resistance. This mechanism then causes the air breakdown spark gap to ignite between the two electrodes, that is to say an arc arises between the two electrodes.
- an overvoltage protection device with an ignition aid in which the response voltage can be set within wide limits with small tolerances, namely by selecting or dimensioning the voltage switching element. It is of particular importance that the ignition aid in the device according to the invention is insensitive to mechanical and thermal stresses and can be used directly inside the spark gap formed by the two electrodes. It is also important that a "passive ignition aid" has been implemented in the overvoltage protection device according to the invention, so that an additional ignition circuit - with an ignition pulse generation - is not required.
- Fig. 1 is a schematic diagram of a first embodiment of an overvoltage protection device according to the invention.
- FIG. 2 shows a schematic diagram of a second exemplary embodiment of an overvoltage protection device according to the invention.
- an overvoltage protection device according to the invention is shown only with regard to its basic structure.
- the illustrated overvoltage protection devices each include a first electrode 1, a second electrode 2 and an air breakdown spark gap 3 that exists or is effective between the two electrodes 1 and 2.
- the series connection of a voltage switching element 4 and an ignition element 5 is connected to the two electrodes 1 and 2.
- the voltage switching element 4 is shown only schematically.
- a varistor, a surpressor diode or a gas-filled surge arrester can be provided as the voltage switching element 4 with which the response voltage of the overvoltage protection device according to the invention is specified.
- voltage switching element 4 a combination of a varistor and a surge suppressor diode, a combination of a varistor and a gas-filled surge arrester, a combination of a surpressor diode and a gas-filled surge arrester or a combination of a varistor, a surpressor diode and a gas-filled surge arrester ,
- the ignition element 5 is also only shown schematically in the exemplary embodiments of overvoltage protection devices according to the invention shown in FIGS. 1 and 2.
- the ignition element 5 consists of a material that is electrically conductive and arc-resistant. In addition, it must be ensured that the ignition element 5 cannot weld to the electrode 2 at the contact point 6 with the electrode 2.
- the ignition element 5 and / or the electrode 2 assigned to the ignition element 5 preferably consists of an electrically conductive ceramic material, a non-welding metallic material or / and an electrically conductive plastic. For the rest, there is a permanent contact resistance between the ignition element 5 and the electrode 2 assigned to the ignition element 5; the contact point 6 thus has a permanent contact resistance.
- This contact resistance can be realized by a suitable choice of the electrical conductivity of the materials of the ignition element 5 and / or the electrode 2 assigned to the ignition element 5, preferably by a suitable choice of the material of the ignition element 5.
- the contact resistance permanently provided at the contact point 6 can instead of by a suitable choice of the electrical conductivities of the materials of the ignition element 5 and / or the electrode 2 assigned to the ignition element 5 or additionally by a suitable geometric design of the ignition element 5 at the contact point 6 to the assigned electrode 2 or / and by a suitable geometric design of the electrode 2 at the contact point 6 to the ignition element 5, preferably by a small contact area.
- the contact point 6 between the ignition element 5 and the associated electrode 2 has a small contact area in particular if the ignition element 5 is cut-shaped or punctiform at its end assigned to the electrode 2 and the electrode 2 is convex on its side facing the ignition element 5.
- the air gap must be so large that, in the event of an overvoltage with a low energy content, the leakage current only flows through the contact point 6, that is to say the contact area surrounding the contact point 6 does not yet undergo preionization.
- the air gap must be so small that, when the energy content of the overvoltage is greater, the flowing current leads to a pre-ionization of the contact area surrounding the contact point 6.
- a solution that meets both criteria is implemented in the exemplary embodiments shown.
- the end of the ignition element 5 facing the electrode 2 is conical-convex and the side of the electrode 2 facing the ignition element 5 is conical-concave.
- 1 and 2 show preferred exemplary embodiments of surge protection devices according to the invention in so far as the contact pressure between the ignition element 5 and the associated electrode 2 is adjustable. In the exemplary embodiments, this is realized by a compression spring 7 acting on the ignition element 5; different contact pressures can be realized with compression springs 7 of different types of springs.
- both the voltage switching element 4 and the ignition element 5 are provided spatially between the two electrodes 1 and 2.
- FIG. 2 shows an embodiment in which the voltage switching element 4 is provided spatially outside the area between the two electrodes 1 and 2.
- the voltage switching element 4 provided spatially outside the region between the two electrodes 1 and 2 is connected on the one hand to the electrode 1 via an outer connecting element 8 and on the other hand to the - electrically conductive - compression spring 7 and thus to the ignition element 5 via a connecting pin 9 ,
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Amplifiers (AREA)
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10142575 | 2001-09-02 | ||
DE10142575 | 2001-09-02 | ||
DE10146728A DE10146728B4 (de) | 2001-09-02 | 2001-09-23 | Überspannungsschutzeinrichtung |
DE10146728 | 2001-09-23 | ||
PCT/EP2002/009569 WO2003021735A1 (de) | 2001-09-02 | 2002-08-28 | Überspannungsschutzeinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1423894A1 true EP1423894A1 (de) | 2004-06-02 |
EP1423894B1 EP1423894B1 (de) | 2007-05-02 |
Family
ID=26010033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02797632A Expired - Lifetime EP1423894B1 (de) | 2001-09-02 | 2002-08-28 | Überspannungsschutzeinrichtung |
Country Status (7)
Country | Link |
---|---|
US (2) | US7324319B2 (de) |
EP (1) | EP1423894B1 (de) |
CN (1) | CN1552117B (de) |
AT (1) | ATE361567T1 (de) |
DE (1) | DE50210082D1 (de) |
ES (1) | ES2282511T3 (de) |
WO (1) | WO2003021735A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003021735A1 (de) * | 2001-09-02 | 2003-03-13 | Phoenix Contact Gmbh & Co. Kg | Überspannungsschutzeinrichtung |
DE102004006988B4 (de) * | 2003-11-28 | 2014-02-06 | Dehn + Söhne Gmbh + Co. Kg | Überspannungsschutzeinrichtung auf Funkenstreckenbasis, umfassend mindestens zwei in einem druckdichten Gehäuse befindliche Hauptelektroden |
DE10357945A1 (de) * | 2003-12-09 | 2005-07-14 | Phoenix Contact Gmbh & Co. Kg | Überspannungsschutzeinrichtung |
CN100370670C (zh) * | 2005-03-28 | 2008-02-20 | 西安交通大学 | 基于空心电极的过电压保护器件 |
US8164876B2 (en) * | 2009-09-04 | 2012-04-24 | Osram Sylvania Inc. | Transient voltage protection circuit and system incorporating the same |
DE102011102937B4 (de) * | 2010-08-17 | 2017-03-02 | DEHN + SÖHNE GmbH + Co. KG. | Anordnung zur Zündung von Funkenstrecken |
EP2953216B1 (de) | 2014-06-03 | 2019-07-31 | PHOENIX CONTACT GmbH & Co. KG | Funkenstrecke mit kühl- und/oder dämpfungseinrichtung |
DE202015100397U1 (de) | 2015-01-28 | 2016-05-02 | Phoenix Contatct GmbH & Co. KG | Funkenstrecke mit adaptiver Kühl- und/oder Dämpfungseinrichtung |
DE102014210516C5 (de) | 2014-06-03 | 2020-03-26 | Phoenix Contact Gmbh & Co. Kg | Funkenstrecke |
DE102014015612B4 (de) * | 2014-10-23 | 2016-11-24 | Phoenix Contact Gmbh & Co. Kg | Überspannungsableiter |
CN104538943A (zh) * | 2014-12-19 | 2015-04-22 | 苏州汉克山姆照明科技有限公司 | 避雷器安装结构 |
DE102016206580A1 (de) * | 2016-04-19 | 2017-11-02 | Siemens Aktiengesellschaft | Anordnung zum Überspannungsschutz einer mit einer Isolierflüssigkeit isolierten elektrischen Anlage |
US9913359B1 (en) * | 2016-08-17 | 2018-03-06 | General Electric Company | Krypton-85-free spark gap with cantilevered component |
CN107800112A (zh) * | 2017-12-17 | 2018-03-13 | 成都育芽科技有限公司 | 一种自复式过欠压保护器 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1406858A (en) * | 1920-05-28 | 1922-02-14 | George F Kreitlein | Vacuum spark amplifier |
FR1105378A (fr) | 1953-07-23 | 1955-11-30 | Bbc Brown Boveri & Cie | Intervalle d'éclatement pré-ionisé notamment pour parafoudres |
US3816798A (en) * | 1970-09-16 | 1974-06-11 | Gen Electric | Triggerable vacuum arc device suitable for alternating current operations |
SE449151B (sv) * | 1983-06-17 | 1987-04-06 | Asea Ab | Skyddsanordning for en seriekondensator |
DE3642818A1 (de) | 1986-12-15 | 1988-06-16 | Siemens Ag | Gasentladungsueberspannungsableiter mit zuendstrich |
DE3905799A1 (de) | 1989-02-24 | 1990-09-13 | Eltex Elektrostatik Gmbh | Hochspannungselektrode |
DE3915198A1 (de) | 1989-05-10 | 1990-11-15 | Dehn & Soehne | Schutzeinrichtung gegen transiente ueberspannungen |
SE465240B (sv) * | 1989-12-22 | 1991-08-12 | Asea Brown Boveri | Oeverspaenningsskydd foer seriekondensatorutrustning |
DE4141681C2 (de) | 1991-12-17 | 1996-11-14 | Phoenix Contact Gmbh & Co | Überspannungsschutzelement |
KR0139509B1 (ko) | 1992-02-27 | 1998-07-01 | 후지무라 마사야 | 밀봉전극 및 이것을 사용한 서어지 흡수기 |
DE4244051C2 (de) | 1992-12-28 | 1996-03-14 | Phoenix Contact Gmbh & Co | Überspannungsschutzelement |
JPH076853A (ja) | 1993-04-03 | 1995-01-10 | Patent Puromooto Center:Kk | ギャップ放電素子及びその製造方法 |
DE4402615C3 (de) | 1993-05-31 | 2000-01-05 | Phoenix Contact Gmbh & Co | Überspannungsschutzelement |
US5465030A (en) * | 1995-01-20 | 1995-11-07 | The United States Of America As Represented By The Secretary Of The Army | Trigger apparatus for spark gap dischargers |
DE19510181C1 (de) * | 1995-03-21 | 1996-06-05 | Dehn & Soehne | Anordnung zur Ableitung von Überspannungen und zur Löschung des Netzfolgestromes |
US5641935A (en) * | 1995-08-16 | 1997-06-24 | The United States Of America As Represented By The Secretary Of The Army | Electronic switch for triggering firing of munitions |
JPH09266052A (ja) | 1996-03-28 | 1997-10-07 | Okaya Electric Ind Co Ltd | サージ吸収素子 |
US5854732A (en) * | 1997-03-10 | 1998-12-29 | Argus Photonics Group, Inc. | High voltage arcing switch initiated by a disruption of the electric field |
DE19717802B4 (de) | 1997-04-26 | 2009-09-17 | Dehn + Söhne GmbH + Co KG | Funkenstrecke |
DE19742302A1 (de) | 1997-09-25 | 1999-04-08 | Bettermann Obo Gmbh & Co Kg | Blitzstromtragfähige Funkenstrecke |
DE19803636A1 (de) | 1998-02-02 | 1999-08-05 | Phoenix Contact Gmbh & Co | Überspannungsschutzsystem |
DE19856939A1 (de) | 1998-12-10 | 2000-06-15 | Bettermann Obo Gmbh & Co Kg | Schaltungsanordnung zum Schutz von elektrischen Installationen gegen Überspannungsereignisse |
DE10008764A1 (de) * | 1999-03-04 | 2000-09-28 | Phoenix Contact Gmbh & Co | Überspannungsschutzeinrichtung |
DE20020771U1 (de) * | 2000-02-22 | 2001-02-15 | Dehn & Soehne | Druckfest gekapselte Funkenstreckenanordnung zum Ableiten von schädlichen Störgrößen durch Überspannung |
DE10060426B4 (de) | 2000-11-24 | 2004-04-15 | Dehn + Söhne Gmbh + Co. Kg | Gekapselter Überspannungsableiter mit mindestens einer Funkenstrecke |
WO2003021735A1 (de) * | 2001-09-02 | 2003-03-13 | Phoenix Contact Gmbh & Co. Kg | Überspannungsschutzeinrichtung |
-
2002
- 2002-08-28 WO PCT/EP2002/009569 patent/WO2003021735A1/de active IP Right Grant
- 2002-08-28 ES ES02797632T patent/ES2282511T3/es not_active Expired - Lifetime
- 2002-08-28 DE DE50210082T patent/DE50210082D1/de not_active Expired - Lifetime
- 2002-08-28 CN CN028172000A patent/CN1552117B/zh not_active Expired - Lifetime
- 2002-08-28 AT AT02797632T patent/ATE361567T1/de not_active IP Right Cessation
- 2002-08-28 EP EP02797632A patent/EP1423894B1/de not_active Expired - Lifetime
- 2002-08-28 US US10/488,432 patent/US7324319B2/en not_active Expired - Lifetime
-
2007
- 2007-12-07 US US11/952,625 patent/US7545619B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03021735A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE361567T1 (de) | 2007-05-15 |
US20040246646A1 (en) | 2004-12-09 |
US20080084646A1 (en) | 2008-04-10 |
CN1552117A (zh) | 2004-12-01 |
US7324319B2 (en) | 2008-01-29 |
DE50210082D1 (de) | 2007-06-14 |
EP1423894B1 (de) | 2007-05-02 |
WO2003021735A1 (de) | 2003-03-13 |
CN1552117B (zh) | 2010-06-09 |
US7545619B2 (en) | 2009-06-09 |
ES2282511T3 (es) | 2007-10-16 |
WO2003021735A8 (de) | 2003-06-05 |
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