EP0783195A1 - Lichtbogenschutzvorrichtung für ummantelter Freileitungskabel - Google Patents

Lichtbogenschutzvorrichtung für ummantelter Freileitungskabel Download PDF

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Publication number
EP0783195A1
EP0783195A1 EP96203480A EP96203480A EP0783195A1 EP 0783195 A1 EP0783195 A1 EP 0783195A1 EP 96203480 A EP96203480 A EP 96203480A EP 96203480 A EP96203480 A EP 96203480A EP 0783195 A1 EP0783195 A1 EP 0783195A1
Authority
EP
European Patent Office
Prior art keywords
electrode
electrodes
protection device
arching
set forth
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.)
Withdrawn
Application number
EP96203480A
Other languages
English (en)
French (fr)
Inventor
Markku Kokkonen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekko Oy AB
Original Assignee
Sekko Oy AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sekko Oy AB filed Critical Sekko Oy AB
Publication of EP0783195A1 publication Critical patent/EP0783195A1/de
Withdrawn legal-status Critical Current

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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
    • H01T4/14—Arcing horns

Definitions

  • the present invention relates to an arching protection device for coated overhead cables, comprising a first electrode which is fastened to a wire with a clamp penetrating through the wire insulation and a second electrode which is fastened to a pole crossarm or some other insulator support at such a distance from the first electrode that an electric arc can be controllably ignited and sustained between the electrodes.
  • An object of the invention is to eliminate this problem and to provide an arching protection device of the above type, wherein the distance between electrodes does not substantially change as a result of movements undertaken by the wires.
  • An insulator 1 mounted on the crossarm of a pole or some other insulator support carries a coated overhead cable 2, to which is fastened a first arching protection horn 4 by means of a clamp 3.
  • the protection horn 4 is a rod-like electrode, which is dimensioned to withstand an electric arc. For improved endurance, the protection horn 4 may have its end provided with a thickening 5.
  • the barrier horn 4 extends crosswise relative to the wire 2, in the present case downwards.
  • the clamp 3 is provided with teeth 3a which pierce through the insulation of the wire 2 as clamping screws 3b are tightened. This establishes a galvanic contact from the wire 2 by way of the clamp 3 to the protection horn 4, 5.
  • a second electrode 6 takes the form of a horizontal rod, which is attached to a pole crossarm or some other insulator support or an insulator by means of a multi-section arm whose arm sections 7, 9, 11 can be secured in various relative positions by means of adjusting elements 8 and 10. Adjustment of the arms 9 and 11 can be used for adjusting the relative distance or gap between the electrodes 6 and 4, 5. Adjustment of the arms 7 and 9 an be used for adjusting the vertical position of the electrode 6, which in the operative condition is located slightly above the level of the bottom end 5 of the first electrode 5, 4. One or both electrodes 6, 4 can be protected by means of bird guards 12 in order to eliminate faults possibly caused by birds and small animals.
  • the bird guard 12 comprises a plastic insulation coating, which leaves an electric-arc discharge area uncovered.
  • Electrodes 6 and 4, 5 are located crosswise to each other and at the same time transversely to the wire 2, whereby movements of the wires 2 do not have a substantial effect on the distance between the electrodes. Indeed, the distance between the electrodes can be maintained quite constant by giving the electrodes just modest curvatures. Since, as the wire 2 executes a movement, the electrode 4 moves in vertical or lateral direction, its distance from the electrode 6 does not substantially change, which also enables the controlled ignition of an electric arc.
  • the invention is not limited to the above-described exemplary embodiment.
  • the electrodes may have an orientation which is different from what is described above, such that the electrode 4 has its end provided with a horizontal section which extends crosswise to a vertical electrode replacing the electrode 6.
  • the electrode rod 4 can also be directed upwards.
  • the electrodes may also have a cross-section which varies from a round rod to a more or less flat plate.
  • the connection between the electrode 4 and the clamp 3 can also be implemented in a variety of ways, e.g. with a separate screw attachment.

Landscapes

  • Catching Or Destruction (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Insulators (AREA)
  • Insulated Conductors (AREA)
  • Inorganic Insulating Materials (AREA)
EP96203480A 1996-01-03 1996-12-09 Lichtbogenschutzvorrichtung für ummantelter Freileitungskabel Withdrawn EP0783195A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI960019A FI99060C (fi) 1996-01-03 1996-01-03 Päällystettyjen ilmajohtojen valokaarisuoja
FI960019 1996-01-03

Publications (1)

Publication Number Publication Date
EP0783195A1 true EP0783195A1 (de) 1997-07-09

Family

ID=8544664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96203480A Withdrawn EP0783195A1 (de) 1996-01-03 1996-12-09 Lichtbogenschutzvorrichtung für ummantelter Freileitungskabel

Country Status (10)

Country Link
EP (1) EP0783195A1 (de)
CZ (1) CZ285203B6 (de)
EE (1) EE03498B1 (de)
FI (1) FI99060C (de)
HR (1) HRP970008B1 (de)
HU (1) HUP9603500A3 (de)
NO (1) NO314779B1 (de)
PL (1) PL180946B1 (de)
RO (1) RO112941B1 (de)
RU (1) RU2197050C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104361960A (zh) * 2014-12-02 2015-02-18 国家电网公司 一种带可摆臂电极的并联间隙防雷保护装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE720623C (de) * 1939-02-23 1942-05-11 Siemens Ag Befestigung von UEberspannungsableitern
JPS63289727A (ja) * 1987-05-20 1988-11-28 Chubu Electric Power Co Inc 鳥害防止具
EP0387865A1 (de) 1989-03-17 1990-09-19 Oy Sekko Ab Funkenschutzeinrichtung für isolierte Leitungen, insbesondere Freileitungen
JPH0434810A (ja) * 1990-05-29 1992-02-05 Ngk Insulators Ltd 避雷碍子装置の放電電極
JPH0778531A (ja) * 1993-09-08 1995-03-20 Ngk Insulators Ltd アーキングホーン
JPH07272824A (ja) * 1994-03-29 1995-10-20 Ngk Insulators Ltd 耐雷ホーン碍子装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE720623C (de) * 1939-02-23 1942-05-11 Siemens Ag Befestigung von UEberspannungsableitern
JPS63289727A (ja) * 1987-05-20 1988-11-28 Chubu Electric Power Co Inc 鳥害防止具
EP0387865A1 (de) 1989-03-17 1990-09-19 Oy Sekko Ab Funkenschutzeinrichtung für isolierte Leitungen, insbesondere Freileitungen
JPH0434810A (ja) * 1990-05-29 1992-02-05 Ngk Insulators Ltd 避雷碍子装置の放電電極
JPH0778531A (ja) * 1993-09-08 1995-03-20 Ngk Insulators Ltd アーキングホーン
JPH07272824A (ja) * 1994-03-29 1995-10-20 Ngk Insulators Ltd 耐雷ホーン碍子装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 117 (E - 731) 22 March 1989 (1989-03-22) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 210 (E - 1203) 19 May 1992 (1992-05-19) *
PATENT ABSTRACTS OF JAPAN vol. 95, no. 003 *
PATENT ABSTRACTS OF JAPAN vol. 95, no. 010 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104361960A (zh) * 2014-12-02 2015-02-18 国家电网公司 一种带可摆臂电极的并联间隙防雷保护装置
CN104361960B (zh) * 2014-12-02 2016-08-24 国家电网公司 一种带可摆臂电极的并联间隙防雷保护装置

Also Published As

Publication number Publication date
CZ197A3 (en) 1997-07-16
HUP9603500A2 (hu) 1998-01-28
FI99060B (fi) 1997-06-13
HRP970008B1 (en) 2003-02-28
NO970011D0 (no) 1997-01-02
EE9700001A (et) 1997-08-15
PL180946B1 (pl) 2001-05-31
NO314779B1 (no) 2003-05-19
EE03498B1 (et) 2001-08-15
HU9603500D0 (en) 1997-02-28
HRP970008A2 (en) 1998-04-30
PL317476A1 (en) 1997-07-07
RU2197050C2 (ru) 2003-01-20
NO970011L (no) 1997-07-04
RO112941B1 (ro) 1998-01-30
HUP9603500A3 (en) 1999-03-29
FI99060C (fi) 1997-09-25
FI960019A0 (fi) 1996-01-03
CZ285203B6 (cs) 1999-06-16

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