EP0104384A1 - Dispositif de contact d'un interrupteur à vide - Google Patents

Dispositif de contact d'un interrupteur à vide Download PDF

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Publication number
EP0104384A1
EP0104384A1 EP83107901A EP83107901A EP0104384A1 EP 0104384 A1 EP0104384 A1 EP 0104384A1 EP 83107901 A EP83107901 A EP 83107901A EP 83107901 A EP83107901 A EP 83107901A EP 0104384 A1 EP0104384 A1 EP 0104384A1
Authority
EP
European Patent Office
Prior art keywords
contact
contacts
arrangement according
support body
contact arrangement
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
Application number
EP83107901A
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German (de)
English (en)
Other versions
EP0104384B1 (fr
Inventor
Bernt Dr. Paul
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.)
Siemens AG
Original Assignee
Siemens 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6171670&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0104384(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0104384A1 publication Critical patent/EP0104384A1/fr
Application granted granted Critical
Publication of EP0104384B1 publication Critical patent/EP0104384B1/fr
Expired 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

  • the invention relates to a contact arrangement for vacuum switches with coaxially opposite hollow contacts, the contact carriers contain slots inclined in the same direction and are each provided with a contact disk and each contain a central support body.
  • the maximum breaking capacity of vacuum switches is given by the maximum values of the current during the arc phase and again.
  • a contraction of the arc which leads to an increase in the arc voltage and the power conversion associated with this voltage, can be prevented by a coaxial magnetic field in the area of the arc between the opened contacts.
  • a coil enclosing the switching chamber in a cylindrical manner can be provided in these so-called axial field contacts. It is electrically in series with the switch contacts and builds up an axial magnetic field that is dependent on the current and penetrates the gap between the coaxial contacts in the axial direction.
  • the coil can also be constructed in two layers and the turns can be made to go back and forth helically. The production of such vacuum cups, however, requires a relatively great effort (DE-OS 29 11 706).
  • a contact arrangement for vacuum switches with radial field contacts is also known, in which an arc is drawn between the ring-shaped contact support surfaces after the contacts have been opened and is intended to rotate between the contacts by azimuthal magnetic forces.
  • the contact carriers of the pot contacts arranged coaxially to one another are provided with slots running in opposite directions.
  • a magnetic field is obtained between the opened contacts, which is essentially perpendicular to the axis of the contacts and thus perpendicular to the arc.
  • the strength of the magnetic field and thus the speed of movement of the arc can be increased by the fact that a core made of ferromagnetic material is arranged within the hollow cylindrical contact carrier (DE-AS 11 96 751).
  • Hollow contacts have also been proposed, in which the same-directional slitting of the contact carriers generates an axial field after the contacts have opened and which are provided with a cover and in which the current supply forms a support body. The end of the support body is separated from the cover by an air gap when the contacts are open.
  • This design is based on the task of generating a diffuse arc by concentrating the axial magnetic field between the opened contacts. This requires that an air gap is created by resilient material after opening the contacts (DE-OS 31 33 799).
  • the invention is also based on the object of specifying a contact arrangement with axial field contacts which has such a position between the open contacts Generate flux density that a contraction of the arc and thus a thermal overload, in particular of the respective anode, is avoided and the switching capacity is increased accordingly.
  • the contacts should be low-resistance, low-induction and insensitive to high contact pressure when the vacuum switch is closed.
  • This object is achieved according to the invention with the characterizing features of claim 1.
  • This gives contacts whose resistance ap does not significantly exceed p.
  • the annular cavity formed between the contact carrier and support body is covered on the side facing the other contact, so that a hollow cathode discharge cannot occur during the arc phase.
  • This contact arrangement can be produced in a simple manner and can be used in conventional vacuum interrupters without additional design changes.
  • the contacts consist essentially of three parts, firstly the contact carrier made of electrically highly conductive material, preferably copper, which is placed on the contact base and which is provided with slots which are preferably inclined to the axis of the contacts and thus form the coil part for the axial magnetic field, secondly the substantially columnar support body made of poorly electrically conductive material, for example a chrome-nickel steel, the. at least at its end facing the other contact is preferably expanded to approximately the inside diameter of the contact carrier and thus, in this embodiment, closes off the cavity on the end face of the contact, thirdly with its edge region on the contact carrier and with its central region on the support body resting contact disc, which can preferably be permanently connected, in particular soldered, to the end face of the contact carrier.
  • the contact carrier made of electrically highly conductive material, preferably copper, which is placed on the contact base and which is provided with slots which are preferably inclined to the axis of the contacts and thus form the coil part for the axial magnetic field
  • the mechanical pressure in the closed state of the switch is transmitted from the contact pin serving for the current supply via the contact base and the support body and the contact disk to the opposite contact in a straight path, while the current essentially through both in the closed state of the switch and during the arc phase the contact carrier flows. It creates an axial magnetic field of the order of about 5 / uT / A in the space between the electrodes.
  • FIG. 1 a contact arrangement according to the invention is shown in a partially sectioned side view.
  • Figure 2 shows a special embodiment of the contact disk.
  • two contacts 2 and 4 with mutually facing end faces are arranged coaxially to one another.
  • These contacts each consist of a hollow cylindrical contact carrier -6 or 8, which is connected via a contact base 10 or 12 to a power supply 14 or 16 designed as a bolt.
  • the end faces of the contact carriers 6 and 8 and a respective support body 18 and 22 are each provided with a contact disk 26 and 28, which are each provided with a bevel 27 and 29 at their edges, so that a central part of the contact disks 26 is provided and 28 forms the contact bearing surface of contacts 2 and 4.
  • the support bodies 18 and 22 can each be provided on their end face facing the contact disk 26 or 28 with an extension 19 or 23 serving to center the contact disk 26 or 28.
  • the end faces of the support bodies 18 and 22, which face the contact base 10 and 12 are each provided with an extension 20 and 24, respectively.
  • These extensions 20 and 24 can preferably be significantly larger than the extensions 19 and 23 so that they have a favorable effect on the current transfer from the power supply 14 or .... 16 via the contact base 10 or 12 to the associated contact carrier 6 or 8 exercise.
  • the supporting bodies 18 and 22 are each designed as a rotating body, the ends of which are expediently expanded in such a way in a special embodiment of the contact arrangement.
  • the cross section of the support body 18 and 22 each form approximately the profile of a double T-beam.
  • the ends can expediently be expanded to such an extent that the diameter of the end faces of the support bodies 18 and 22 is approximately equal to the inner diameter d i of the contact carriers 6 and 8.
  • the contact carriers 6 and 8 are each provided with slots 7 and 9 which are inclined with respect to the axis of rotation of the contact arrangement shown in dot-dash lines in FIG. 1 and which run in the same direction in the two contacts 2 and 4 so that those formed between the individual slots 7 and 9 are formed Repeat the bars in the opposite contact in the same direction.
  • the slots 7 and 9 can preferably form a helix.
  • Such slots can be produced in a simple manner with a cylindrical milling cutter, the diameter of which is equal to the width of the slot and which is at least as long as the wall Strength of the contact carrier 6 and 8 and which is guided radially to the axis of rotation of the contacts 2 and 8 with a predetermined pitch angle helically.
  • the angle of inclination of the helix of the slots 7 and 9 may preferably be in the range of about 60-76 0, in particular about to be chosen 70 °.
  • the contact disks can each be provided with radially extending slots 32 which prevent eddy currents.
  • the specific axial magnetic flux density B / I is plotted as a function of the contact distance a K . It can be seen that up to a maximum contact distance of 20 mm used in practice, the specific axial magnetic flux density in the range the axis of rotation reaches at least 4 / uT / A.
  • the magnetic field generated by the contact carriers 6 and 8 when the contacts 2 and 4 are open between the contacts is essentially homogeneous over the entire contact distance a K.
  • This special contact distance is indicated in the diagram in FIG. 3 by an arrow marked with an H.
  • the specific axial field remains approximately constant up to a diameter of approximately (d a + d i ) / 4 and then drops outwards. It is therefore preferably effective in the central area between the opened contacts 2 and 4, in which the arc is ignited when disconnected under load current.
  • the annular cavity between the support body 18 or 22 and the contact carrier 6 or 8 is shielded by the contact disk 26 or 28 or by the expanded end faces of the support body 18 or 22 against the electrical field between the contacts, so that a hollow cathode discharge can't burn in this room.
  • the support body 18 and 22 also relieve the slotted contact carrier 6 and 8, so that the slots 7 and 9 can not be squeezed together. Since the entire end face of the covers 26 and 28 is available for the arc, the thermal load on the contacts 2 and 4 is correspondingly low. Furthermore, the mean solid angle at which the plasma of the arc can diffuse out of the gap between the opened electrodes 2 and 4 is relatively small. The shield current is thus further reduced and the voltage-lowering effect of the magnetic field is supported accordingly.
  • the slots 32 divide the contact disks 26 and 28 into disk segments, each of which covers one of the end faces of the webs, which are formed by the slots 7 and 9 in the contact carriers 6 and 8, respectively.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP83107901A 1982-08-25 1983-08-10 Dispositif de contact d'un interrupteur à vide Expired EP0104384B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823231593 DE3231593A1 (de) 1982-08-25 1982-08-25 Kontaktanordnung fuer vakuumschalter
DE3231593 1982-08-25

Publications (2)

Publication Number Publication Date
EP0104384A1 true EP0104384A1 (fr) 1984-04-04
EP0104384B1 EP0104384B1 (fr) 1987-11-11

Family

ID=6171670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107901A Expired EP0104384B1 (fr) 1982-08-25 1983-08-10 Dispositif de contact d'un interrupteur à vide

Country Status (4)

Country Link
US (1) US4532391A (fr)
EP (1) EP0104384B1 (fr)
JP (1) JPS5960829A (fr)
DE (2) DE3231593A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175181A2 (fr) * 1984-09-10 1986-03-26 Siemens Aktiengesellschaft Disposition de contact pour interrupteur à vide
GB2174843A (en) * 1985-04-24 1986-11-12 Vacuum Interrupters High current switch contacts
CN1969353B (zh) * 2004-06-30 2010-11-03 西门子公司 用于真空开关管的带有环形支承体的开关触头
US10418211B2 (en) 2015-09-15 2019-09-17 Siemens Aktiengesellschaft Switching contact of a vacuum interrupter comprising supporting bodies
RU203212U1 (ru) * 2020-11-30 2021-03-26 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" Контактное устройство вакуумной дугогасительной камеры

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3407088A1 (de) * 1984-02-27 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter
DE3415743A1 (de) * 1984-04-26 1985-10-31 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer einen vakuumschalter
DE3415744A1 (de) * 1984-04-26 1985-10-31 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer einen vakuumschalter
DE3507317C2 (de) * 1985-03-01 1993-11-18 Siemens Ag Kontaktanordnung für Vakuumschalter
JPH0731966B2 (ja) * 1985-07-12 1995-04-10 株式会社日立製作所 真空しや断器
DE3610241A1 (de) * 1986-03-26 1987-10-01 Siemens Ag Kontaktanordnung fuer vakuumschalter mit axialem magnetfeld
JPH01502546A (ja) * 1986-03-26 1989-08-31 シーメンス、アクチエンゲゼルシヤフト 軸方向磁界を伴なう真空遮断器の接触子装置
EP0238967A1 (fr) * 1986-03-26 1987-09-30 Siemens Aktiengesellschaft Disposition de contacts pour interrupteur sous vide à champ magnétique axial et méthode de fabrication des contacts assortis
DE3613450A1 (de) * 1986-04-21 1987-10-22 Siemens Ag Kontaktanordnung fuer vakuumschalter
DE58908842D1 (de) * 1989-07-28 1995-02-09 Siemens Ag Kontaktanordnung für eine Vakuumschaltröhre.
US5111008A (en) * 1990-09-13 1992-05-05 Square D Company Effective arc stack/efficient contact carrier
US5387771A (en) * 1993-04-08 1995-02-07 Joslyn Hi-Voltage Corporation Axial magnetic field high voltage vacuum interrupter
DE4327714A1 (de) * 1993-08-18 1995-02-23 Abb Patent Gmbh Scheibenförmige Platte
JP3840934B2 (ja) * 2001-09-12 2006-11-01 株式会社明電舎 真空インタラプタ用接触子及び真空インタラプタ
EP1294002B1 (fr) * 2001-09-12 2007-12-12 Kabushiki Kaisha Meidensha Contact pour disjoncteurs à vide et disjoncteur avec un tel contact
EP1294004B1 (fr) * 2001-09-12 2004-12-01 Kabushiki Kaisha Meidensha Contact pour un interrupteur à vide et interrupteur à vide avec un tel contact
US6965089B2 (en) * 2003-02-21 2005-11-15 Mcgraw-Edison Company Axial magnetic field vacuum fault interrupter
US7488916B2 (en) * 2005-11-14 2009-02-10 Cooper Technologies Company Vacuum switchgear assembly, system and method
US7772515B2 (en) * 2005-11-14 2010-08-10 Cooper Technologies Company Vacuum switchgear assembly and system
US8450630B2 (en) * 2007-06-05 2013-05-28 Cooper Technologies Company Contact backing for a vacuum interrupter
US7781694B2 (en) * 2007-06-05 2010-08-24 Cooper Technologies Company Vacuum fault interrupter
DE102007063414B3 (de) * 2007-12-18 2009-04-23 Siemens Ag Kontaktscheibe für eine Vakuumschaltröhre
JP2011242879A (ja) * 2010-05-14 2011-12-01 Panasonic Corp 接続装置
US9640353B2 (en) * 2014-10-21 2017-05-02 Thomas & Betts International Llc Axial magnetic field coil for vacuum interrupter
GB2552839A (en) * 2016-08-12 2018-02-14 The General Electric Company Improvements to vacuum switching device contacts
US10643808B2 (en) 2018-10-09 2020-05-05 S&C Electric Company Vacuum switching devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196751B (de) * 1964-03-11 1965-07-15 Ass Elect Ind Vakuumschalter
DE1590356A1 (de) * 1965-08-06 1969-10-23 English Electric Co Ltd Vakuumschalter
DE2443141B2 (de) * 1973-09-10 1978-05-18 Tokyo Shibaura Electric Co., Ltd., Kawasaki, Kanagawa (Japan) Vakuumschalter mit einem Vakuumgehäuse
DE3033632A1 (de) * 1980-09-06 1982-04-15 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Vakuum-schalter
DE3227482A1 (de) * 1982-07-20 1983-02-03 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Vakuumschalter-kontaktanordnung mit vorrichtung zur erzeugung eines achsialen magnetfeldes
EP0073925A1 (fr) * 1981-08-26 1983-03-16 Siemens Aktiengesellschaft Disposition de contacts pour interrupteur à vide

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52150571A (en) * 1976-06-09 1977-12-14 Hitachi Ltd Vacuum breaker electrode
US4117288A (en) * 1976-06-25 1978-09-26 Westinghouse Electric Corp. Vacuum type circuit interrupter with a contact having integral axial magnetic field means
JPS555204A (en) * 1978-05-27 1980-01-16 Mitsubishi Heavy Ind Ltd Manufacturing method of box type construction
JPS6129151Y2 (fr) * 1979-10-09 1986-08-28
JPS5784530A (en) * 1980-11-17 1982-05-26 Hitachi Ltd Vacuum breaker
JPS5789241U (fr) * 1980-11-20 1982-06-02
DE3112407A1 (de) * 1981-03-28 1982-04-08 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Schaltkontakt fuer vakuumschalter
DE3151907A1 (de) * 1981-12-23 1983-06-30 Siemens AG, 1000 Berlin und 8000 München Vakuumschaltroehre mit einem ring zur erzeugung eines axialen magnetfeldes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196751B (de) * 1964-03-11 1965-07-15 Ass Elect Ind Vakuumschalter
DE1590356A1 (de) * 1965-08-06 1969-10-23 English Electric Co Ltd Vakuumschalter
DE2443141B2 (de) * 1973-09-10 1978-05-18 Tokyo Shibaura Electric Co., Ltd., Kawasaki, Kanagawa (Japan) Vakuumschalter mit einem Vakuumgehäuse
DE3033632A1 (de) * 1980-09-06 1982-04-15 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Vakuum-schalter
EP0073925A1 (fr) * 1981-08-26 1983-03-16 Siemens Aktiengesellschaft Disposition de contacts pour interrupteur à vide
DE3227482A1 (de) * 1982-07-20 1983-02-03 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Vakuumschalter-kontaktanordnung mit vorrichtung zur erzeugung eines achsialen magnetfeldes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175181A2 (fr) * 1984-09-10 1986-03-26 Siemens Aktiengesellschaft Disposition de contact pour interrupteur à vide
EP0175181A3 (fr) * 1984-09-10 1988-08-17 Siemens Aktiengesellschaft Disposition de contact pour interrupteur à vide
GB2174843A (en) * 1985-04-24 1986-11-12 Vacuum Interrupters High current switch contacts
CN1969353B (zh) * 2004-06-30 2010-11-03 西门子公司 用于真空开关管的带有环形支承体的开关触头
US10418211B2 (en) 2015-09-15 2019-09-17 Siemens Aktiengesellschaft Switching contact of a vacuum interrupter comprising supporting bodies
RU203212U1 (ru) * 2020-11-30 2021-03-26 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" Контактное устройство вакуумной дугогасительной камеры

Also Published As

Publication number Publication date
JPH0322007B2 (fr) 1991-03-26
EP0104384B1 (fr) 1987-11-11
DE3374486D1 (en) 1987-12-17
US4532391A (en) 1985-07-30
JPS5960829A (ja) 1984-04-06
DE3231593A1 (de) 1984-03-01

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