EP1523792A1 - Schutzelement zum ableiten von überspannungen und verwendung - Google Patents
Schutzelement zum ableiten von überspannungen und verwendungInfo
- Publication number
- EP1523792A1 EP1523792A1 EP03787688A EP03787688A EP1523792A1 EP 1523792 A1 EP1523792 A1 EP 1523792A1 EP 03787688 A EP03787688 A EP 03787688A EP 03787688 A EP03787688 A EP 03787688A EP 1523792 A1 EP1523792 A1 EP 1523792A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- varistor
- cup
- contact pin
- surge arrester
- element 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors; Arresters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors; Arresters
- H01C7/123—Arrangements for improving potential distribution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors; Arresters
- H01C7/126—Means for protecting against excessive pressure or for disconnecting 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
- a protective element for deriving electrical overvoltages is known for example from DE 43 31 215 AI. It consists of a parallel connection of a surge arrester, an air spark gap and a varistor, which are arranged in a cup-shaped metal sleeve.
- the varistor is ring-shaped and sits directly on the surge arrester.
- a contact pin, which is in contact with the upper electrode of the surge arrester, is passed through the opening of the annular varistor.
- the lower electrode of the surge arrester and the upper electrode of the varistor are connected to the cup-shaped sleeve.
- a disadvantage of the known protective element is that the annular varistor has a high intrinsic capacitance. This determines the damping behavior of the protective element when it is used in high-frequency circuits. A higher capacitance leads to higher attenuation, which in turn reduces the cable length that can be realized with such a protective element.
- the contact pin preferably has at least two feet which are guided laterally between the varistor and the inner wall of the cup towards the first electrode of the surge arrester. These feet are then offset against the arms of the expansion element or are passed between them.
- Cup and contact pin are advantageously made of brass.
- the surge arrester can also be chosen arbitrarily and its exact design is known per se.
- Gas-filled surge arresters are advantageously used, which have an ignition line and can form a gas discharge to a discharge electrode in the event of overvoltage.
- Figure 1 shows a protective element according to the invention in a schematic cross section
- Figure 3 shows a perspective exploded view of individual parts of a component according to the invention
- Figure 4 shows the parts of Figure 3 in assembled form
- Figure 5 shows the embodiment of Figure 4 within a cup.
- FIG. 1 shows the basic structure of such a device on the basis of a schematic cross section through a protective element according to the invention.
- the protective element is arranged in a cup B, which consists of an essentially cylindrical cup wall BW and a cup base BB.
- An overvoltage arrester UA, a varistor V, an intermediate piece ZS and a contact pin KS are arranged above one another within the cup B.
- the surge arrester UA sits on the cup base BB and is electrically connected to it via its second electrode E2.
- the varistor V sits on the surge arrester UA and is connected via its lower electrode to the first electrode E1 of the surge arrester.
- the intermediate piece is arranged in a form-fitting manner between the contact pin and the varistor and electrically isolates them from one another.
- FIG 2a shows a specific embodiment of the invention, which obeys the principle shown in Figure 1.
- the construction of the surge arrester UA is carried out more precisely here.
- This essentially consists of a ceramic sleeve KH and two electrodes E1, E2, which form a spark gap in the interior of the gas-filled cavity of the ceramic sleeve KH.
- the disc-shaped intermediate piece has openings in the edge area through which the feet F or the arms of the expansion element SE can be inserted from different sides.
- Figure 4 shows a perspective view of the three components shown in Figure 3 in an assembled form, as they are also arranged in the finished protective element. From this illustration it is clear that the intermediate piece ZS is used for electrical insulation between the contact pin and varistor, or for electrical insulation of the feet F against the arms of the expansion element SE. The feet F are also spaced from the varistor, as are the arms of the expansion element SE from the contact pin.
- FIG. 5 shows a perspective top view of how the part shown in FIG. 4 is fitted into the cup B in a form-fitting manner. From the figure it is clear that the intermediate piece ZS is form-fitting with the cup B. It is also clear that the arms of the expansion element SE are spread against the cup wall and thus make electrical contact with it.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US39743802P | 2002-07-19 | 2002-07-19 | |
| US397438P | 2002-07-19 | ||
| PCT/DE2003/002433 WO2004017479A1 (de) | 2002-07-19 | 2003-07-18 | Schutzelement zum ableiten von überspannungen und verwendung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1523792A1 true EP1523792A1 (de) | 2005-04-20 |
| EP1523792B1 EP1523792B1 (de) | 2011-05-11 |
Family
ID=31888188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03787688A Expired - Lifetime EP1523792B1 (de) | 2002-07-19 | 2003-07-18 | Schutzelement zum ableiten von überspannungen und verwendung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6952336B2 (de) |
| EP (1) | EP1523792B1 (de) |
| JP (1) | JP4299244B2 (de) |
| CN (1) | CN100446363C (de) |
| WO (1) | WO2004017479A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005016848A1 (de) * | 2005-04-12 | 2006-10-19 | Epcos Ag | Überspannungsableiter |
| DE102005036265A1 (de) | 2005-08-02 | 2007-02-08 | Epcos Ag | Funkenstrecke |
| EP2162961B1 (de) * | 2007-06-21 | 2012-03-21 | Epcos AG | Vorrichtung und modul zum schutz vor blitzen und überspannungen |
| US8199450B2 (en) * | 2009-05-05 | 2012-06-12 | Samsung Electronics Co., Ltd. | ESD protection utilizing radiated thermal relief |
| SI2287984T1 (sl) * | 2009-07-20 | 2011-12-30 | Bettermann Obo Gmbh & Co Kg | Prenapetostni odvodnik |
| EP2959495B1 (de) * | 2013-02-22 | 2020-04-22 | Bourns Incorporated | Vorrichtungen und verfahren für flache gasentladungsröhren |
| US20200279701A1 (en) * | 2016-02-15 | 2020-09-03 | Dongguan Littelfuse Electronics Co., Ltd. | Thermal Metal Oxide Varistor Circuit Protection Device |
| DE102017118181B4 (de) * | 2017-07-07 | 2019-01-17 | Dehn + Söhne Gmbh + Co. Kg | Gekapselte Überspannungsschutzvorrichtung mit einem becherartigen Gehäuse |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2355421B2 (de) | 1973-11-06 | 1977-08-04 | Ueberspannungsschutzeinrichtung | |
| US4288833A (en) * | 1979-12-17 | 1981-09-08 | General Electric Company | Lightning arrestor |
| US4396970A (en) * | 1981-01-12 | 1983-08-02 | Tii Industries Inc. | Overvoltage surge arrester with predetermined creepage path |
| US4803588A (en) * | 1986-04-14 | 1989-02-07 | Cooper Industries, Inc. | Surge arrester |
| JP2513105B2 (ja) * | 1992-03-31 | 1996-07-03 | 三菱マテリアル株式会社 | サ―ジアブソ―バ |
| DE9321370U1 (de) * | 1992-09-28 | 1997-09-18 | Siemens AG, 80333 München | Baugruppe zur Ableitung elektrischer Überspannungen |
| DE4331215B4 (de) | 1992-09-28 | 2005-02-10 | Epcos Ag | Baugruppe zur Ableitung elektrischer Überspannungen |
| DE19622140A1 (de) * | 1996-06-01 | 1997-12-04 | Asea Brown Boveri | Überspannungsableiter |
| DE19856939A1 (de) * | 1998-12-10 | 2000-06-15 | Bettermann Obo Gmbh & Co Kg | Schaltungsanordnung zum Schutz von elektrischen Installationen gegen Überspannungsereignisse |
| CN2468137Y (zh) * | 2000-06-16 | 2001-12-26 | 武汉博大科技集团随州避雷器有限公司 | 复合外套有串联间隙金属氧化物避雷器 |
-
2003
- 2003-07-18 EP EP03787688A patent/EP1523792B1/de not_active Expired - Lifetime
- 2003-07-18 JP JP2004528393A patent/JP4299244B2/ja not_active Expired - Fee Related
- 2003-07-18 CN CNB038171627A patent/CN100446363C/zh not_active Expired - Fee Related
- 2003-07-18 WO PCT/DE2003/002433 patent/WO2004017479A1/de not_active Ceased
- 2003-07-18 US US10/623,332 patent/US6952336B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004017479A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100446363C (zh) | 2008-12-24 |
| EP1523792B1 (de) | 2011-05-11 |
| CN1669195A (zh) | 2005-09-14 |
| US20040066599A1 (en) | 2004-04-08 |
| WO2004017479A1 (de) | 2004-02-26 |
| JP4299244B2 (ja) | 2009-07-22 |
| JP2005533361A (ja) | 2005-11-04 |
| US6952336B2 (en) | 2005-10-04 |
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