EP0995244A1 - Überspannungsableiter mit äusserer kurzschlusseinrichtung - Google Patents
Überspannungsableiter mit äusserer kurzschlusseinrichtungInfo
- Publication number
- EP0995244A1 EP0995244A1 EP98945012A EP98945012A EP0995244A1 EP 0995244 A1 EP0995244 A1 EP 0995244A1 EP 98945012 A EP98945012 A EP 98945012A EP 98945012 A EP98945012 A EP 98945012A EP 0995244 A1 EP0995244 A1 EP 0995244A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- surge arrester
- electrodes
- shorting bar
- contact
- 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
- 230000001012 protector Effects 0.000 title abstract 2
- 125000006850 spacer group Chemical group 0.000 claims abstract description 20
- 239000012212 insulator Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
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
- H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
Definitions
- the invention is in the field of electrical components and is to be used in the structural design of a surge arrester which is provided with an external short-circuit device.
- Such short-circuit devices are common both with two-electrode and with three-electrode surge arresters, which usually have a cylindrical design, the electrodes being arranged insulated from one another.
- the short-circuit devices serve to protect the surge arrester during long-term loads;
- Such a short-circuit device generally contains a structural element which can be melted at higher temperatures, with the aid of which the two electrodes or the central electrode and one or both end electrodes are short-circuited.
- an external short-circuit device which consists of a resilient bracket which is placed on the center electrode by means of a clamp and extends along the axis of the surge arrester.
- the free ends of the two arms of this spring bracket are not radial but axially on the end face to the two end electrodes with the interposition of an insulating plastic body which is meltable in the event of an overload and is arranged in the center of the respective end electrode.
- the end of each arm of the spring clip is designed as a contact tab which projects diagonally beyond the spacing plastic body and, in the event of a short circuit, contacts the end face of the respective end electrode in its edge region (US Pat. No. 4,984,125 A, FIGS. 1a and 1b).
- Short-circuit devices are also known which can be used for surge arresters with both two electrodes and with three electrodes. These short-circuiting devices also consist of a resilient bracket with two free ends which rest axially on the end electrodes. In surge arresters having two electrodes positioned a fusible insulation between the free ends of the resilient shorting bar and associated with ⁇ electrode which is pierced of the shorting bar to short circuit from the contact area of the free end. This contact area can consist of two flat contact lugs, provided the surge arrester is provided with axially soldered connection wires (FR 2 621 184 A).
- the shorting bar contacts the center electrode and lies with its free ends on the end faces of the two end electrodes axially with the interposition of an insulating film arranged eccentrically in the edge region of the respective electrode (US 5,029,302 A, WO 90/13904).
- a resilient shorting bar is also known, the resilient end of which is held radially at a distance from the electrode to be contacted in the event of an overload and the other end of which consists of two fastening tongues which are welded on the end face to the edge area of the other electrode (DE 29 11 110 AI).
- the object of the invention is to provide a robust short-circuit device which is as simple as possible and which is also suitable for surge arresters with axially welded-on connecting wires and has a high AC current carrying capacity (max. 30 Amp / 15 min per lead).
- the resiliently spaced contact area of the shorting bar is formed by two contact tabs which start from a common base area and which release the center area between the first electrode, the spacer between the common base area Contact tabs and the end face of the first electrode is arranged.
- Such a configuration of the short-circuiting device enables - regardless of whether and how (radially or axially protruding) the connecting wires are connected to the front electrodes - large-area contacting on the front electrodes by forming two contact sheets which are in the edge region of the electrodes without impairment make contact through molten insulating material; the spacer located relatively far from the contact points can be made very small.
- the short-circuit device designed according to the invention is expediently used for surge arresters with two electrodes, of which the second electrode forms the other end of the surge arrester and is kept at a distance from the first electrode by a tubular insulator, in such a way that the short-circuiting bracket is in the axial direction of the surge arrester is symmetrical and fixed on the insulator by means of a clip.
- the other end of the shorting bar can also be kept at a distance from the second electrode by means of a spacer; the other end of the shorting bar can also rest directly on the second electrode.
- the short-circuiting bow designed according to the invention in surge arresters with three electrodes, of which the second electrode forms the other end of the surge arrester and the third electrode is arranged between the first and the second electrode and is insulated from these electrodes by means of a first and a second hollow cylindrical insulator, is expediently carried out in such a way that the shorting bar in the axial direction is also symmetrical and is seated on the third electrode by means of a clip.
- the end face of the respective electrode can be structurally facilitated in that the common base region of the contact tabs is each provided with a slot in which the insulating spacer is fixed with a holding attachment.
- the retaining attachment can be designed as a short cylindrical socket or can also be formed by an annular recess which is incorporated, for example, into the lateral surface of a cylindrical body.
- FIGS. 1 to 7 Three exemplary embodiments of a surge arrester designed according to the invention are shown in FIGS. 1 to 7. Show
- FIG. 1 and 2 a three-electrode surge arrester in two views
- FIG. 3 a two-electrode surge arrester in side view
- FIG. 4 a variant of the surge arrester according to FIG. 3 and FIGS. 5 to 7 three embodiments of an insulating spacer.
- the surge arrester 1 has a first end electrode 11, a second end electrode 12 and a third electrode 13, which is designed as a central electrode and is separated from the two end electrodes 11 and 12 by means of the tubular insulators 14 and 15 are arranged insulated. All electrodes are made of copper and are similar to the configuration shown in U.S. Patent 4,433,354.
- the two end electrodes 11 and 12 are provided with axially welded-on connecting wires 16, in particular according to FIG. 1 of US Pat. No. 4,362,962.
- the center electrode 13 is provided with a tangentially welded and radially extending connecting wire.
- the surge arrester 1 is equipped with a short-circuit device 2, which essentially consists of a two-armed, resilient short-circuiting bracket 21 and two insulating spacers 31.
- the short-circuiting bracket 21 has two arms 22 and 23 running parallel to the longitudinal axis of the surge arrester, which are angled perpendicular to the longitudinal axis A in the region of the two end electrodes and then run approximately parallel to the end faces of the two end electrodes 11 and 12.
- the ends of the arms 22 and 23 form contact areas 24 and 25 which, according to FIG. 2, each consist of two contact tabs 26 and 27.
- the contact tabs release the central region 11 A of the respective end electrode, the actual contact surface being opposite the edge region 11 B of the respective electrode.
- the contact tabs 26 and 27 have a common base 28 which is provided with a slot 29. In this slot 29, a retaining lug 32 of the insulating spacer 31 is inserted.
- the insulating spacer is thus located between the common base 28 and the edge region 11 B of the respective end electrode and is dimensioned such that an air gap Ls is maintained between the contact tabs 26, 27 and the edge region 11 B of the end electrodes.
- the shorting bar 21 is also provided with a clip 30, which isolators 14 and 15 on more than half of their res includes and with the help of the shorting bar sits on the center electrode 13.
- the surge arrester according to FIG. 3 is a two-electrode arrester with the two end electrodes 11 and 12, which are insulated from one another by means of the insulator 33.
- the short-circuit device is constructed in accordance with the short-circuit device according to FIGS. 1 and 2 and consists of a spring clip 34 and the two insulating spacers 31, the clamp 35 being placed directly on the insulator 33 without effecting electrical contact there.
- one of the insulating spacers 31 can also be omitted in the surge arrester according to FIG. 3, so that the contact area of the resilient arm 23 is always in direct contact with the front edge area of the end electrode 11.
- FIG. 5 shows the insulating spacer 31 with the holding projection 32.
- the insulating spacer can consist of a cylindrical part 36 which is provided with an annular recess 37 with which the spacer is inserted into the slot 29 of the contact areas 24 and 25 - can be added.
- the spacer can also consist of a disc 38, which is then inserted between the common base 28 of the tabs 26 and 27 and the edge region 11 B of the respective electrode and is held there by the spring tension of the arms 22, 23.
Landscapes
- Fuses (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19731312 | 1997-07-15 | ||
DE19731312A DE19731312A1 (de) | 1997-07-15 | 1997-07-15 | Überspannungsableiter mit äußerer Kurzschlußeinrichtung |
PCT/DE1998/002011 WO1999004468A1 (de) | 1997-07-15 | 1998-07-14 | Überspannungsableiter mit äusserer kurzschlusseinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0995244A1 true EP0995244A1 (de) | 2000-04-26 |
EP0995244B1 EP0995244B1 (de) | 2001-05-30 |
Family
ID=7836429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98945012A Expired - Lifetime EP0995244B1 (de) | 1997-07-15 | 1998-07-14 | Überspannungsableiter mit äusserer kurzschlusseinrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6424514B1 (de) |
EP (1) | EP0995244B1 (de) |
CN (1) | CN1264502A (de) |
DE (2) | DE19731312A1 (de) |
WO (1) | WO1999004468A1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW522420B (en) * | 2000-06-20 | 2003-03-01 | Takashi Katoda | Fabrication method of surge protector device and the device fabricated by the method |
DE10162916A1 (de) * | 2001-12-20 | 2003-07-10 | Epcos Ag | Federbügel, Überspannungsableiter mit dem Federbügel und Anordnung eines Überspannungsableiters |
US7342770B2 (en) * | 2003-07-09 | 2008-03-11 | Maxwell Technologies, Inc. | Recyclable dry particle based adhesive electrode and methods of making same |
US7352558B2 (en) * | 2003-07-09 | 2008-04-01 | Maxwell Technologies, Inc. | Dry particle based capacitor and methods of making same |
US20060147712A1 (en) * | 2003-07-09 | 2006-07-06 | Maxwell Technologies, Inc. | Dry particle based adhesive electrode and methods of making same |
US20050250011A1 (en) * | 2004-04-02 | 2005-11-10 | Maxwell Technologies, Inc. | Particle packaging systems and methods |
US7791860B2 (en) | 2003-07-09 | 2010-09-07 | Maxwell Technologies, Inc. | Particle based electrodes and methods of making same |
US7920371B2 (en) | 2003-09-12 | 2011-04-05 | Maxwell Technologies, Inc. | Electrical energy storage devices with separator between electrodes and methods for fabricating the devices |
US7495349B2 (en) * | 2003-10-20 | 2009-02-24 | Maxwell Technologies, Inc. | Self aligning electrode |
US7180726B2 (en) * | 2003-11-07 | 2007-02-20 | Maxwell Technologies, Inc. | Self-supporting capacitor structure |
US7027290B1 (en) | 2003-11-07 | 2006-04-11 | Maxwell Technologies, Inc. | Capacitor heat reduction apparatus and method |
US7016177B1 (en) | 2003-11-07 | 2006-03-21 | Maxwell Technologies, Inc. | Capacitor heat protection |
US7203056B2 (en) * | 2003-11-07 | 2007-04-10 | Maxwell Technologies, Inc. | Thermal interconnection for capacitor systems |
US7090946B2 (en) | 2004-02-19 | 2006-08-15 | Maxwell Technologies, Inc. | Composite electrode and method for fabricating same |
US7384433B2 (en) | 2004-02-19 | 2008-06-10 | Maxwell Technologies, Inc. | Densification of compressible layers during electrode lamination |
US20050269988A1 (en) * | 2004-06-04 | 2005-12-08 | Maxwell Technologies, Inc. | Voltage balancing circuit for multi-cell modules |
US7567417B2 (en) | 2004-08-06 | 2009-07-28 | Huber+Suhner Ag | Automatically quenching surge arrester arrangement and use of such a surge arrester arrangement |
US7440258B2 (en) | 2005-03-14 | 2008-10-21 | Maxwell Technologies, Inc. | Thermal interconnects for coupling energy storage devices |
DE102005016848A1 (de) * | 2005-04-12 | 2006-10-19 | Epcos Ag | Überspannungsableiter |
US8518573B2 (en) * | 2006-09-29 | 2013-08-27 | Maxwell Technologies, Inc. | Low-inductive impedance, thermally decoupled, radii-modulated electrode core |
US20080201925A1 (en) | 2007-02-28 | 2008-08-28 | Maxwell Technologies, Inc. | Ultracapacitor electrode with controlled sulfur content |
US7974063B2 (en) * | 2007-11-16 | 2011-07-05 | Corning Cable Systems, Llc | Hybrid surge protector for a network interface device |
JP5248374B2 (ja) * | 2009-03-13 | 2013-07-31 | 新光電気工業株式会社 | 3極避雷管 |
DE102015121438B4 (de) * | 2015-12-09 | 2023-12-28 | Tdk Electronics Ag | Elektrisches Schutzbauelement mit Kurzschlusseinrichtung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2911110A1 (de) * | 1979-03-21 | 1980-09-25 | Siemens Ag | Gasentladungs-ueberspannungsableiter mit fail-safe-verhalten |
DE3006193C2 (de) * | 1980-02-19 | 1984-04-12 | Siemens AG, 1000 Berlin und 8000 München | Elektrische Anschlußverbindung der Elektroden eines Gasentladungs-Überspannungsableiters |
DE3100924A1 (de) * | 1981-01-14 | 1982-08-05 | Siemens AG, 1000 Berlin und 8000 München | "gasentladungs-ueberspannungsableiter" |
FR2621184B1 (fr) * | 1987-09-29 | 1991-10-18 | Claude Sa | Dispositif de protection contre les surtensions |
JPH0227694U (de) * | 1988-08-10 | 1990-02-22 | ||
GB2230900A (en) * | 1989-04-24 | 1990-10-31 | Semitron Cricklade Ltd | Electrical components |
MX172972B (es) * | 1989-05-01 | 1994-01-26 | Porta Systems Corp | Dispositivo de autoajuste de fallas en el tubo de gas para modulos protectores de telefonos |
US5029302A (en) * | 1990-08-29 | 1991-07-02 | Illinois Tool Works | Fail safe gas tube |
US5187634A (en) * | 1991-08-21 | 1993-02-16 | Adc Telecommunications, Inc. | Fail-safe protector |
-
1997
- 1997-07-15 DE DE19731312A patent/DE19731312A1/de not_active Withdrawn
-
1998
- 1998-07-14 EP EP98945012A patent/EP0995244B1/de not_active Expired - Lifetime
- 1998-07-14 DE DE59800801T patent/DE59800801D1/de not_active Expired - Fee Related
- 1998-07-14 US US09/462,753 patent/US6424514B1/en not_active Expired - Fee Related
- 1998-07-14 CN CN98807263A patent/CN1264502A/zh active Pending
- 1998-07-14 WO PCT/DE1998/002011 patent/WO1999004468A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9904468A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6424514B1 (en) | 2002-07-23 |
WO1999004468A1 (de) | 1999-01-28 |
EP0995244B1 (de) | 2001-05-30 |
CN1264502A (zh) | 2000-08-23 |
DE59800801D1 (de) | 2001-07-05 |
DE19731312A1 (de) | 1999-01-28 |
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