EP0199594A2 - Hochstromschaltkontakte - Google Patents

Hochstromschaltkontakte Download PDF

Info

Publication number
EP0199594A2
EP0199594A2 EP86303054A EP86303054A EP0199594A2 EP 0199594 A2 EP0199594 A2 EP 0199594A2 EP 86303054 A EP86303054 A EP 86303054A EP 86303054 A EP86303054 A EP 86303054A EP 0199594 A2 EP0199594 A2 EP 0199594A2
Authority
EP
European Patent Office
Prior art keywords
contact
body member
electrical switch
disc
slots
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Withdrawn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
EP86303054A
Other languages
English (en)
French (fr)
Other versions
EP0199594A3 (de
Inventor
Leslie Thomas Falkingham
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.)
VACUUM INTERRUPTERS Ltd
Original Assignee
VACUUM INTERRUPTERS Ltd
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 VACUUM INTERRUPTERS Ltd filed Critical VACUUM INTERRUPTERS Ltd
Publication of EP0199594A2 publication Critical patent/EP0199594A2/de
Publication of EP0199594A3 publication Critical patent/EP0199594A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil

Definitions

  • This invention relates to contacts for electrical switch devices for use in circuits designed to carry high currents and especially to contacts for vacuum interrupters and other forms of vacuum switches. More particularly, the invention relates to such contacts which are cup-shaped and are of the kind having inclined slots in the side wall of the contact which causes the current through the contacts to produce a transverse magnetic field which forces the arc formed between the contacts on opening or closing the switch to rotate around the rim of the contact.
  • One method of producing an axial magnetic field is to provide a coil arrangement around the contacts but it must be kept fully insulated from the arcing chamber and so is fairly cumbersome.
  • an object of the present invention to provide a contact which will force the current to move so as to generate both axial and transverse magnetic fields and will thus tend to both partially diffuse the arc and rotate it around the contact.
  • the invention provides a contact for electrical switch devices comprising a cup-shaped conducting body member having inclined slots in at least the side walls thereof and a disc of conducting material provided on top of the rim of the body member.
  • the disc preferably has a raised central portion and may also be slotted.
  • the cup-shaped conducting body member has a plurality of slots formed therein, each slot passing through at least the part of the side walls adjacent the base in a generally helical direction and,from its junction with the base,continuing partly across the base in a chordal direction. Preferably these are between three and eight slots in the body member.
  • the contact 1 shown in Figure 1 comprises a cup-shaped conducting body member 2, a stem 3 for mounting the body member 2, and a contact disc 4.
  • the body member 2 is made of copper and has four slots 5 arranged to cut diagonally through both the walls 6 of the member 2 and its base 7. Each slot 5 is a straight cut through the member and leaves a slot in the base 7 which is in the chordal direction but which only extends across part of the base.
  • the disc 4 which is made of a low weld-strength material such as CLR, is provided with slots 8 which are continuations of the slots 5 in the body member 2.
  • the slots 5 and 8 serve to rotate the arc formed on separation of the contacts in a vacuum switch in a known manner, and this will therefore not be described further. More information may be found in our copending patent application No.2,144,916A.
  • the disc 4 also has a raised portion 9 which provides the area on which the arc first contacts the disc.
  • the current effectively goes round a toroidal shape and thus, as is well known, provides an axial magnetic field passing through the centre of the contact. As described above, such a field tends to diffuse the arc and so reduce the power concentration on the contact, the arc then being rotated due to the transverse magnetic field induced by the current following the spiral paths formed by the slots in the contact.
  • the contact shown in Figure 2 is similar to that of Figure 1 in that it also has a conducting body member 10, a stem 11 and a contact disc 12.
  • the body member 10 is provided with a larger number of slots 13 than in the above described contact, each of these slots 13 being oblique and only extending along the side wall of the body member.
  • the disc 12 is of truncated conical shape and once again is provided with I slots 14 which are continuations of the slots 13.
  • the contact disc need not have a raised centre portion provided the arc is first formed at the centre of the contact. Furthermore, it need not be slotted and even if it is slotted, the slots need not be continuous with the slots in the body member.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP86303054A 1985-04-24 1986-04-23 Hochstromschaltkontakte Withdrawn EP0199594A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858510442A GB8510442D0 (en) 1985-04-24 1985-04-24 High current switch contacts
GB8510442 1985-04-24

Publications (2)

Publication Number Publication Date
EP0199594A2 true EP0199594A2 (de) 1986-10-29
EP0199594A3 EP0199594A3 (de) 1988-01-13

Family

ID=10578130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86303054A Withdrawn EP0199594A3 (de) 1985-04-24 1986-04-23 Hochstromschaltkontakte

Country Status (4)

Country Link
EP (1) EP0199594A3 (de)
GB (2) GB8510442D0 (de)
IN (1) IN166735B (de)
ZA (1) ZA863065B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002071430A1 (en) * 2001-02-28 2002-09-12 Boe Technology Group Co., Ltd. An integrated contact for power switchgear
KR100361390B1 (ko) * 1994-11-16 2003-02-19 이턴 코포레이션 진공차단기,진공차단기용접점코일조립체및원주전극코일의제조방법
EP1294002A1 (de) * 2001-09-12 2003-03-19 Kabushiki Kaisha Meidensha Vakuumschalterkontakt und Vakuumschalter mit einem solchen Kontakt
WO2012159669A1 (en) * 2011-05-24 2012-11-29 Alstom Technology Ltd Vacuum interrupter
CN119786300A (zh) * 2025-01-23 2025-04-08 西安交通大学 一种大容量断路器真空灭弧室触头结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6388721A (ja) * 1986-09-30 1988-04-19 三菱電機株式会社 真空遮断器の電極構造

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139355B2 (de) * 1971-09-16 1976-10-27
DE2740994C3 (de) * 1977-09-12 1980-09-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Vakuumschalter
DE3112009A1 (de) * 1981-03-26 1982-10-07 Siemens AG, 1000 Berlin und 8000 München "kontaktanordnung fuer vakuumschalter"
DE3133799A1 (de) * 1981-08-26 1983-03-17 Siemens AG, 1000 Berlin und 8000 München "kontaktanordnung fuer vakuumschalter"
DE3231593A1 (de) * 1982-08-25 1984-03-01 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter
GB8321368D0 (en) * 1983-08-09 1983-09-07 Vacuum Interrupters Ltd High current switch contacts

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100361390B1 (ko) * 1994-11-16 2003-02-19 이턴 코포레이션 진공차단기,진공차단기용접점코일조립체및원주전극코일의제조방법
WO2002071430A1 (en) * 2001-02-28 2002-09-12 Boe Technology Group Co., Ltd. An integrated contact for power switchgear
US6891121B2 (en) 2001-02-28 2005-05-10 Boe Technology Group Co., Ltd. Integrated contact for power switchgear
EP1294002A1 (de) * 2001-09-12 2003-03-19 Kabushiki Kaisha Meidensha Vakuumschalterkontakt und Vakuumschalter mit einem solchen Kontakt
US6686552B2 (en) 2001-09-12 2004-02-03 Kabushiki Kaisha Meidensha Contact for vacuum interrupter, and vacuum interrupter using same
US6870118B2 (en) 2001-09-12 2005-03-22 Kabushiki Kaisha Meidensha Contact for vacuum interrupter, and vacuum interrupter using same
WO2012159669A1 (en) * 2011-05-24 2012-11-29 Alstom Technology Ltd Vacuum interrupter
CN119786300A (zh) * 2025-01-23 2025-04-08 西安交通大学 一种大容量断路器真空灭弧室触头结构

Also Published As

Publication number Publication date
ZA863065B (en) 1986-12-30
EP0199594A3 (de) 1988-01-13
GB8609928D0 (en) 1986-05-29
GB8510442D0 (en) 1985-05-30
IN166735B (de) 1990-07-14
GB2174843A (en) 1986-11-12

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Inventor name: FALKINGHAM, LESLIE THOMAS