WO1994014216A1 - Überspannungsableiter - Google Patents
Überspannungsableiter Download PDFInfo
- Publication number
- WO1994014216A1 WO1994014216A1 PCT/DE1993/001158 DE9301158W WO9414216A1 WO 1994014216 A1 WO1994014216 A1 WO 1994014216A1 DE 9301158 W DE9301158 W DE 9301158W WO 9414216 A1 WO9414216 A1 WO 9414216A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protective
- blow
- surge arrester
- protective screens
- screens
- Prior art date
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
- H01T1/15—Details of spark gaps for protection against excessive pressure
-
- 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
Definitions
- the invention relates to a surge arrester with a porcelain housing having circumferential protective shields and with at least one blow-out opening at one of its ends, from which gas flows under high pressure parallel to the cylinder axis along the outer surface of the porcelain housing.
- Such a surge arrester is known for example from DE-OS 26 55 557.
- the porcelain housing is provided with circumferential protective shields which all have the same outer diameter.
- hot gas is blown out of a blow-out opening and along the outer surface of the surge arrester, parallel to its axis, over the protective screens. The hot gas escapes at high pressure and the gas flow can break off the porcelain of the protective shields.
- the invention is therefore based on the object of designing a surge arrester so that the risk of damage to the protective shields is reduced.
- the object is achieved according to the invention in that the protective screen closest to the blow-out opening has a smaller projection than the other protective screens.
- the core of the porcelain housing has a cylindrical shape in most cases.
- the first protective screen has a smaller throat than the other protective screens this first protective screen is not a major obstacle to a flow of extinguishing gas, so that the mechanical load is greatly reduced at this point.
- Throat is understood to mean the extent to which a protective screen protrudes beyond the core of the porcelain housing. Part of the gas flow is already deflected by the first protective screen in such a way that the following protective screens are not damaged by the gas. The gas flow then widened further away from the blow-out opening, on the other hand, the gas is cooled further, so that there is no fear of damage to the other protective shields.
- protective screens form a barrel shape in the longitudinal section of the drain. A particularly favorable guidance of the outflowing gas is hereby achieved.
- the remaining protective shields can be designed, for example, as protective shields with a larger diameter and protective shields with a smaller diameter, which are arranged alternately along the longitudinal axis of the surge arrester.
- the first protective screen is expediently provided with a smaller diameter as seen from the respective blow-out opening.
- Figure 1 shows a surge arrester according to the invention in a partially sectioned view.
- the surge arrester 1 has a cylinder-symmetrical, barrel-shaped shape. For example, it can contain one or more columns of metal oxide discharge resistors in its interior.
- the housing 2 of the surge arrester is designed as a porcelain housing with circumferential protective screens 3. In the central area along the longitudinal axis of the housing, protective screens 3 with a larger diameter alternate with protective screens 4 with a smaller diameter.
- the surge arrester 1 has blow-out openings 5, 9 at its ends, from which hot gas under high pressure in the direction of the arrows 6 in the event of a high short-circuit current, if a corresponding safety device, for example a bursting plate, responds, 10 flows out.
- a corresponding safety device for example a bursting plate
- two protective shields 7, 8 are arranged in front of them, which have a smaller diameter than the other protective shields 3, 4.
- the gas flow represented by the arrow 6 is deflected so that the load on the protective screens 3, 4 is reduced.
- the same arrangement with upstream protective screens of smaller diameter can be provided at the other end of the arrester, as shown in the figure.
- the inventive design of the porcelain housing prevents that of the respective outflow Opening 5, 9 closest protective shield 7, 11 breaks due to the high pressure of the escaping gas.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/481,412 US5594614A (en) | 1992-12-16 | 1993-12-02 | Surge arrester |
DE59305504T DE59305504D1 (de) | 1992-12-16 | 1993-12-02 | Überspannungsableiter |
EP94900755A EP0674816B1 (de) | 1992-12-16 | 1993-12-02 | Überspannungsableiter |
JP6513649A JPH08504999A (ja) | 1992-12-16 | 1993-12-02 | 避雷器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9217480U DE9217480U1 (de) | 1992-12-16 | 1992-12-16 | |
DEG9217480.9U | 1992-12-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994014216A1 true WO1994014216A1 (de) | 1994-06-23 |
Family
ID=6887410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1993/001158 WO1994014216A1 (de) | 1992-12-16 | 1993-12-02 | Überspannungsableiter |
Country Status (6)
Country | Link |
---|---|
US (1) | US5594614A (de) |
EP (1) | EP0674816B1 (de) |
JP (1) | JPH08504999A (de) |
CA (1) | CA2151825A1 (de) |
DE (2) | DE9217480U1 (de) |
WO (1) | WO1994014216A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011007677A1 (de) * | 2011-04-19 | 2012-10-25 | Siemens Aktiengesellschaft | Ausblasschute und Überspannungsableiter |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2655557A1 (de) * | 1976-12-08 | 1978-06-15 | Transformatoren Union Ag | Ueberspannungsableiter |
DE3417648A1 (de) * | 1984-04-13 | 1985-10-17 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Ueberspannungsableiter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1085032A (en) * | 1964-09-11 | 1967-09-27 | English Electric Co Ltd | Improvements in or relating to protective spark gap devices |
SE393232B (sv) * | 1971-07-19 | 1977-05-02 | Meidensha Electric Mfg Co Ltd | Overspenningsavledare |
US3715626A (en) * | 1972-03-01 | 1973-02-06 | Gen Electric | Spring plate contact and support for a lightning arrester sparkgap assembly and associated grading resistors |
DE2210521C2 (de) * | 1972-03-02 | 1974-04-04 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Überspannungsableiter mit einer Überdruckmembran |
CH654145A5 (en) * | 1981-04-03 | 1986-01-31 | Sprecher & Schuh Ag | Overvoltage suppressor |
CH666575A5 (de) * | 1985-02-26 | 1988-07-29 | Bbc Brown Boveri & Cie | Ueberspannungsableiter. |
-
1992
- 1992-12-16 DE DE9217480U patent/DE9217480U1/de not_active Expired - Lifetime
-
1993
- 1993-12-02 EP EP94900755A patent/EP0674816B1/de not_active Expired - Lifetime
- 1993-12-02 US US08/481,412 patent/US5594614A/en not_active Expired - Fee Related
- 1993-12-02 JP JP6513649A patent/JPH08504999A/ja active Pending
- 1993-12-02 DE DE59305504T patent/DE59305504D1/de not_active Expired - Fee Related
- 1993-12-02 WO PCT/DE1993/001158 patent/WO1994014216A1/de active IP Right Grant
- 1993-12-02 CA CA002151825A patent/CA2151825A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2655557A1 (de) * | 1976-12-08 | 1978-06-15 | Transformatoren Union Ag | Ueberspannungsableiter |
DE3417648A1 (de) * | 1984-04-13 | 1985-10-17 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | Ueberspannungsableiter |
Also Published As
Publication number | Publication date |
---|---|
EP0674816B1 (de) | 1997-02-19 |
DE9217480U1 (de) | 1993-02-11 |
DE59305504D1 (de) | 1997-03-27 |
CA2151825A1 (en) | 1994-06-23 |
JPH08504999A (ja) | 1996-05-28 |
EP0674816A1 (de) | 1995-10-04 |
US5594614A (en) | 1997-01-14 |
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