EP2881961A1 - Vakuumschalter mit niedriger, mittlerer oder hoher Spannung mit Kontaktsystem - Google Patents

Vakuumschalter mit niedriger, mittlerer oder hoher Spannung mit Kontaktsystem Download PDF

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Publication number
EP2881961A1
EP2881961A1 EP13005639.3A EP13005639A EP2881961A1 EP 2881961 A1 EP2881961 A1 EP 2881961A1 EP 13005639 A EP13005639 A EP 13005639A EP 2881961 A1 EP2881961 A1 EP 2881961A1
Authority
EP
European Patent Office
Prior art keywords
contact
amf
tmf
spiral
medium
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Withdrawn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
EP13005639.3A
Other languages
English (en)
French (fr)
Inventor
Tarek Dr.-Ing. Lamara
Dietmar Dr.-Ing. Gentsch
Balint Dr. Horvath
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.)
ABB Technology AG
Original Assignee
ABB Technology AG
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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP13005639.3A priority Critical patent/EP2881961A1/de
Priority to PCT/EP2014/003227 priority patent/WO2015082067A1/en
Publication of EP2881961A1 publication Critical patent/EP2881961A1/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Withdrawn legal-status Critical Current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
    • H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves
    • 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

  • the invention relates to a low-, medium-, or high-voltage vacuum interrupter with a contact system of two opposing contacts with AMF contact system, wherein at least one contact is a moving contact, and the AMF contact profile is bell-shaped, according to the preamble of claim 1.
  • Vacuum interrupters are used at Medium Voltage level for high current interruption at occasional fault current and load current switching.
  • AMF axial magnetic field
  • the main object of this state of the art is, to obtain a better AMF arc control by readjusting the radial distribution of the AMF, but without introducing any ferromagnetic material.
  • the contact's impedance, for nominal current conduction, and the contact's mechanical stability while closing remain as an issue.
  • the contacts concept is a multiple-contact system based only on AMF arc control, in which each electrode is constituted of two co-axial contacts.
  • the magnetic field weakening element is an TMF- or radialmagnetfield-contact.
  • the magnetic field weakening element is a TMF-spiral-contact piece, and that the direction of the spiral slots of the opposing TMF-spiral-contact pieces are oriented as such, that the spiral slot direction of one TMF-contact-piece is inverted to the spiral slot direction of the other opposing TMF-contact-piece.
  • the TMF contact pieces are constituted with two, three or four spiral slots.
  • the new feature lies on using the well-known spiral TMF contacts in inverted way like it is shown in figure 1 and a detail of that in figure 3 , in order to generate a strong axial magnetic field component.
  • the invention uses the know-how, that in such extended TMF-AMF contacts investigation from B-field simulations that when the TMF contacts are arranged within the outer cup-shape AMF contacts, they generated in addition to the transverse magnetic component (TMF) also a strong axial component at the contacts surface.
  • TMF transverse magnetic component
  • AMF axial field
  • the axial field (AMF) at the mid-gap distance is close to zero due to the cancelation of both axial components generated by the upper and lower parts.
  • the inner spiral contacts are arranged in the opposite direction as in figure 3 , the axial components will rather superpose to create a strong AMF along the gap.
  • the TMF contact pieces with the spiral slots are constructed as a kind of inlays, which are arrangend in central openings in the opposing AMF-contact pieces.
  • This AMF generated by the inner inverted spiral contacts is actually opposing locally the main AMF generated by the outer cupshaped contacts coils.
  • This combination leads to a weakening of the AMF towards the contacts center and an increase of the AMF at the contacts periphery which is located at the outer contacts. So this results in what is shown in figure 4 .
  • This present contacts structure with inverted spiral contacts is simpler, thus cost effective and easier to manufacture, and more compact, and much more robust than the geometries suggested in the state of the art, for the same purpose.
  • the total contact resistance (bulk and contact's resistance) is also kept very low because of the spiral slots in the contact pieces.
  • inner spiral contacts can be constituted of 4-slots, 3-slots or 2-slots standard TMF-contacts.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP13005639.3A 2013-12-04 2013-12-04 Vakuumschalter mit niedriger, mittlerer oder hoher Spannung mit Kontaktsystem Withdrawn EP2881961A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13005639.3A EP2881961A1 (de) 2013-12-04 2013-12-04 Vakuumschalter mit niedriger, mittlerer oder hoher Spannung mit Kontaktsystem
PCT/EP2014/003227 WO2015082067A1 (en) 2013-12-04 2014-12-03 Low-, medium-, or high-voltage vacuum interrupter with a contact system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13005639.3A EP2881961A1 (de) 2013-12-04 2013-12-04 Vakuumschalter mit niedriger, mittlerer oder hoher Spannung mit Kontaktsystem

Publications (1)

Publication Number Publication Date
EP2881961A1 true EP2881961A1 (de) 2015-06-10

Family

ID=49712904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13005639.3A Withdrawn EP2881961A1 (de) 2013-12-04 2013-12-04 Vakuumschalter mit niedriger, mittlerer oder hoher Spannung mit Kontaktsystem

Country Status (2)

Country Link
EP (1) EP2881961A1 (de)
WO (1) WO2015082067A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110853971A (zh) * 2019-11-06 2020-02-28 西安交通大学 环形永磁体强横磁直流真空灭弧室及直流真空开关

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2527319A1 (de) * 1974-06-18 1976-01-08 Westinghouse Electric Corp Vakuum-ausschalter mit kontakten, die ein axiales magnetfeld erzeugen
US20100230388A1 (en) 2009-03-11 2010-09-16 Ls Industrial Systems Co., Ltd. Electrode for vacuum interrupter
EP2434513A1 (de) * 2010-09-24 2012-03-28 ABB Technology AG Vakuumstromunterbrecher für eine Schutzschalteranordnung
EP2551878A1 (de) * 2011-07-23 2013-01-30 ABB Technology AG Kontaktanordnung für einen Vakuumschalter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2527319A1 (de) * 1974-06-18 1976-01-08 Westinghouse Electric Corp Vakuum-ausschalter mit kontakten, die ein axiales magnetfeld erzeugen
US20100230388A1 (en) 2009-03-11 2010-09-16 Ls Industrial Systems Co., Ltd. Electrode for vacuum interrupter
EP2434513A1 (de) * 2010-09-24 2012-03-28 ABB Technology AG Vakuumstromunterbrecher für eine Schutzschalteranordnung
EP2551878A1 (de) * 2011-07-23 2013-01-30 ABB Technology AG Kontaktanordnung für einen Vakuumschalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LAMARA TAREK ET AL: "Theoretical and Experimental Investigation of New Innovative TMF-AMF Contacts for High-Current Vacuum Arc Interrup", IEEE TRANSACTIONS ON PLASMA SCIENCE, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 41, no. 8, 1 August 2013 (2013-08-01), pages 2043 - 2050, XP011523369, ISSN: 0093-3813, [retrieved on 20130807], DOI: 10.1109/TPS.2013.2273178 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110853971A (zh) * 2019-11-06 2020-02-28 西安交通大学 环形永磁体强横磁直流真空灭弧室及直流真空开关

Also Published As

Publication number Publication date
WO2015082067A1 (en) 2015-06-11

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