EP0155376B1 - Disposition de contact pour interrupteur à vide - Google Patents

Disposition de contact pour interrupteur à vide Download PDF

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Publication number
EP0155376B1
EP0155376B1 EP84115139A EP84115139A EP0155376B1 EP 0155376 B1 EP0155376 B1 EP 0155376B1 EP 84115139 A EP84115139 A EP 84115139A EP 84115139 A EP84115139 A EP 84115139A EP 0155376 B1 EP0155376 B1 EP 0155376B1
Authority
EP
European Patent Office
Prior art keywords
contact
slots
contacts
contact arrangement
sin
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.)
Expired
Application number
EP84115139A
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German (de)
English (en)
Other versions
EP0155376A1 (fr
Inventor
Bernt-Joachim Dr. Paul
Roman Dr. Renz
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
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Siemens AG
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Publication date
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Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0155376A1 publication Critical patent/EP0155376A1/fr
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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 coaxial opposed and axially movable relative to each other pot contacts, the hollow cylindrical contact carrier contain slots inclined in the same direction to the axis and are each provided with a contact plate.
  • the maximum breaking capacity of vacuum switches is given by the maximum values of the current that can be switched off and the recurring voltage after the arc is broken off and can be favorably influenced by a magnetic field parallel to the direction of the arc current.
  • 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 which encloses the switching chamber cylindrically 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 helically back and forth.
  • the production of such vacuum switches requires a relatively large amount of effort.
  • the axial magnetic field between the open contacts is generated by windings that are created by slots in the two contact carriers. These slots have the same direction of rotation for both contacts.
  • the mutually facing end faces of the contact carriers are each covered by the edge of an essentially disk-shaped contact plate.
  • a central area of the contact plate forms the contact support surface.
  • a support body made of mechanically strong and electrically poorly conductive material can also be provided.
  • the contact plates are generally provided with radial slots to suppress eddy currents (DE-A-3 227 482).
  • the invention is based on the object of designing a contact arrangement of the type mentioned at the outset in such a way that a large current carrying capacity is ensured and that the temperature increase due to the nominal current remains low.
  • a homogeneous magnetic field sufficient to extinguish large short-circuit currents should be generated in the gap between the open contacts during the arc phase.
  • a sufficient effective number of turns is required for this; at the same time, however, the resistance of the segments of the contact carrier acting as a coil formed between the slots must be limited accordingly.
  • the contact should also be able to be established in a simple manner.
  • the invention is based on the knowledge that the generation of the required magnetic field is only possible within certain ranges of different relationships between the influencing variables determining the magnetic field. Even with a larger contact diameter, such a large and sufficiently homogeneous magnetic field must be ensured that a diffuse arc is obtained and at the same time the arc voltage is as small as possible.
  • the contacts are obtained in the air gap between the open contacts a specific magnetic induction B z of at least 3.5 II I lTfA, preferably at least 4 I lTfA. Further particularly advantageous design forms result from the subclaims.
  • a pot depth H r > 0.1 D is sufficient; however, it is preferably chosen to be at least 0.15 D, in particular at least 0.2 D.
  • a relatively large pot depth H r of up to about 0.5 D a correspondingly small angle of inclination a of the slots relative to the axis of the contacts can be selected.
  • the wall thickness W of the contact carriers is preferably matched to the diameter D and the pot depth Hr in such a way that the contact carriers act like a pair of Helmholtz coils at a medium contact spacing. This creates a particularly homogeneous axial magnetic field in the middle between the contacts.
  • the wall thickness W of the contact carriers acting as coils is preferably chosen to be at least 7 mm and generally not significantly exceed 10 mm.
  • FIGS. 1 and 2 serve to explain the design of the slots of the contact carrier.
  • FIGS. 1 and 2 serve to explain the design of the slots of the contact carrier.
  • two contacts 2 and 4 are arranged coaxially opposite one another with their end faces at a distance A of, for example, 15 mm.
  • Their common axis is indicated by dash-dotted lines in the figure and labeled 5.
  • They 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 contacts 2 and 4 each contain a support body 18 or 20 and are each covered with a contact plate 26 or 28. At their edges, these contact plates are each provided with a bevel, which is not shown in the figure, so that a central part of them forms the contact support surface.
  • the supporting bodies 18 and 20 are each designed as a rotating body, the ends of which are expanded in such a way that a sectional image results approximately in the form of a double T-beam.
  • the slots 22 and 24 can be formed helically with a constant angle of inclination a.
  • Such slots can be produced with a cylindrical milling cutter, the diameter of which is equal to the slot width and which is at least as long as the wall thickness W of the contact carriers 6 and 8.
  • the contact carrier 6 or 8 is guided helically around its axis 5. With a predetermined diameter D and a pot depth H T , the angle of inclination of such helical slots with the azimuth ⁇ swept by each of the slots 22 and 24 is by the relationship connected.
  • Slots with a flat cut surface can be produced in a particularly simple manner, for example by sawing.
  • Such slots with an angle of inclination a E of the sectional plane 36 against the axis 5 are illustrated in the side view according to FIG. 2, in which only a single plane slot 22 is indicated for the sake of simplicity.
  • the angle of inclination a E of the slot plane 36 against the axis 5 of the contacts 2 and 4 with an azimuth ⁇ according to FIG. 3 results from the relationship
  • b is the distance which the straight line 30 formed by the slot plane 36 of the slot 22 and the end face 27 of the contact carrier 6 is from the axis 5.
  • the pot depth H T is plotted as a function of the diameter D.
  • the pot depth can be in a range can be selected, which is given by a lower limit H T " and an upper limit H To .
  • the pot depth H T can be approximately between 13.5 and 27 mm, such as it is indicated by dashed lines in the diagram.
  • the azimuth ⁇ of the slots 22 and 24 is plotted as a function of the diameter D.
  • the parameter of the curves running in a good approximation as a straight line is the number of slots s in each of the contact carriers 6 and 8.
  • the value H ⁇ 0.15 D which is preferably still usable and a relatively large slot width of, for example, 2.6 mm was assumed .
  • Corresponding dash-dotted limit line ⁇ u indicates the lower limit of the range for the azimuth ⁇ , which, with suitable values for the number of slots s, the depth of the pot H T and the slot width, enables the generation of the minimum axial field required to increase the switching capacity of the contact arrangement.
  • Corresponding dashed limit line ⁇ ° indicates the upper limit of the range for the azimuth ⁇ , which, with suitable values for the number of slots s, the depth of the pot H T and the slot width 2.6 mm, enables the generation of an axial field to be used to increase the switching power.
  • This slot angle a lies approximately in the middle of the range which is determined by the limits 66.2 ° for the smallest and 82.2 ° for the largest slot angle.
  • contacts 2 and 4 act at a mutual distance like a pair of Helmholtz coils and thus generate a homogeneous field on axis 5 between contacts 2 and 4.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Claims (4)

1. Dispositif de contact pour interrupteur à vide comportant des contacts en forme de pots (2, 4) disposés coaxialement en vis-à-vis l'un de l'autre et déplaçable l'un par rapport à l'autre, suivant leur direction axiale et dont les porte-contacts (6, 8) en forme de cylindres creux comportent des fentes (22, 24) inclinées dans le même sens par rapport à l'axe (5) et sont munies respectivement d'une plaque de contact (26, 28), caractérisé par le fait que pour la plage de valeurs du diamètre extérieur D des porte-contacts (6, 8)
Figure imgb0016
avec une profondeur de pot HT et un nombre de fentes s ainsi qu'un angle azimutal β des fentes (22, 24), les conditions
a) 0,1 D ≤ HT ≤ 0,5 D
b) 0,03 D/mm ≤ s ≤ 0,1 D/mm
c) (8 + 0,1 D/mm D/mm + 3 )° ≤β ≤ (150 + 0,5 D/mm)° s

sont satisfaites.
2. Dispositif de contact suivant la revendication 1, caractérisé par le fait que la condition 0,15 D ≤ HT ≤ 0,3 D est satisfaite.
3. Dispositif de contact suivant la revendication 1 ou 2, dans lequel le plan de coupe (36) des fentes planes (22, 24) fait un angle d'inclinaison αE et les droites de coupe (30) sont à une distance b de l'axe (5) des contacts (2, 4), caractérisé par le fait que la condition
{b + (D/2)sin[(9 + 0,58 D/mm)°
- arc sin (2b/D)]} /HT ≤ tg αE
≤ {b + (D/2)sin[(150 + 0,5 D/mm)°
- arc sin (2b/D)]} /HT
est satisfaite.
4. Dispositif de contact suivant l'une des revendications 1 à 3, caractérisé par le fait que l'épaisseur de paroi W des porte-contacts (6, 8) satisfait à la condition
Figure imgb0017
EP84115139A 1984-02-27 1984-12-11 Disposition de contact pour interrupteur à vide Expired EP0155376B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3407088 1984-02-27
DE19843407088 DE3407088A1 (de) 1984-02-27 1984-02-27 Kontaktanordnung fuer vakuumschalter

Publications (2)

Publication Number Publication Date
EP0155376A1 EP0155376A1 (fr) 1985-09-25
EP0155376B1 true EP0155376B1 (fr) 1987-06-03

Family

ID=6228967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115139A Expired EP0155376B1 (fr) 1984-02-27 1984-12-11 Disposition de contact pour interrupteur à vide

Country Status (4)

Country Link
US (1) US4620074A (fr)
EP (1) EP0155376B1 (fr)
JP (1) JPS60205925A (fr)
DE (2) DE3407088A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651745C1 (de) * 1996-12-12 1998-04-02 Siemens Ag Niederdruck-Gasentladungsschalter
DE10030670A1 (de) * 2000-06-23 2002-01-10 Siemens Ag Vakuumschaltröhre mit zwei Kontaktsystemen
DE102004031887B3 (de) * 2004-06-30 2006-04-13 Siemens Ag Schaltkontakt für Vakuumschaltröhren
DE102012221844A1 (de) 2012-11-29 2014-06-05 Siemens Aktiengesellschaft Schaltkontakt für Vakuumschaltröhren
DE102015217647A1 (de) 2015-09-15 2017-03-16 Siemens Aktiengesellschaft Schaltkontakt einer Vakuumschaltröhre mit Stützkörpern

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3724811A1 (de) * 1987-07-27 1989-02-09 Bbc Brown Boveri & Cie Kontaktanordnung fuer einen vakuumschalter
DE3724813A1 (de) * 1987-07-27 1989-02-09 Bbc Brown Boveri & Cie Kontaktanordnung fuer einen vakuumschalter
EP0410049B1 (fr) * 1989-07-28 1994-12-28 Siemens Aktiengesellschaft Arrangement de contacts d'un interrupteur à vide
DE4002933A1 (de) * 1990-02-01 1991-08-08 Sachsenwerk Ag Vakuumschaltkammer
US5111008A (en) * 1990-09-13 1992-05-05 Square D Company Effective arc stack/efficient contact carrier
DE4214550A1 (de) * 1992-04-29 1993-11-04 Siemens Ag Vakuumschaltroehre
US5691522A (en) * 1995-06-07 1997-11-25 Eaton Corporation Vacuum interrupter with a single internal assembly for generating an axial magnetic field
JP3431439B2 (ja) * 1997-03-06 2003-07-28 株式会社日立製作所 絶縁開閉装置
DE19841771C1 (de) * 1998-09-11 2000-04-20 Siemens Ag Vorrichtung zur Stabilisierung eines Plasmas
DE10029763B4 (de) * 2000-06-16 2009-01-15 Siemens Ag Vakuumschaltröhre
JP2002334641A (ja) * 2001-05-09 2002-11-22 Meidensha Corp 真空遮断器の電極及びその製造方法
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
CN1193396C (zh) * 2001-09-12 2005-03-16 株式会社明电舍 真空断路器的触点及使用触点的真空断路器
CN100442413C (zh) * 2001-09-12 2008-12-10 株式会社明电舍 用于真空断路器的触点以及包括该触点的真空断路器
FR2946790B1 (fr) 2009-06-10 2011-07-01 Areva T & D Sa Contact pour ampoule a vide a moyenne tension a coupure d'arc amelioree, ampoule a vide et disjoncteur, tel qu'un disjoncteur sectionneur d'alternateur associes.
FR2946792A1 (fr) * 2009-06-10 2010-12-17 Areva T & D Sa Enroulement pour contact d'ampoule a vide a moyenne tension a endurance amelioree, ampoule a vide et disjoncteur, tel qu'un disjoncteur sectionneur d'alternateur associes.
FR2946791B1 (fr) 2009-06-10 2011-09-23 Areva T & D Sa Contact pour ampoule a vide a moyenne tension a structure renforcee, ampoule a vide et disjoncteur, tel qu'un disjoncteur sectionneur d'alternateur associes.
DE112013006070A5 (de) * 2012-12-19 2015-08-27 Jochen Kuckuck Kontaktsystem zur Lichtbogenkontraktionskompensation bei Leistungsschaltern
US9640353B2 (en) 2014-10-21 2017-05-02 Thomas & Betts International Llc Axial magnetic field coil for vacuum interrupter
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
CN112420444A (zh) * 2020-12-09 2021-02-26 西安交通大学 一种纵向磁场真空灭弧室触头

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1098862A (en) * 1963-10-09 1968-01-10 Ass Elect Ind Improvements relating to vacuum switch contact assemblies
GB1095638A (en) * 1965-12-16 1967-12-20 Ass Elect Ind Improvements in or relating to vacuum switch contacts
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
DE3231593A1 (de) * 1982-08-25 1984-03-01 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651745C1 (de) * 1996-12-12 1998-04-02 Siemens Ag Niederdruck-Gasentladungsschalter
DE10030670A1 (de) * 2000-06-23 2002-01-10 Siemens Ag Vakuumschaltröhre mit zwei Kontaktsystemen
DE10030670C2 (de) * 2000-06-23 2002-06-13 Siemens Ag Vakuumschaltröhre mit zwei Kontaktsystemen
US6720515B2 (en) 2000-06-23 2004-04-13 Siemens Aktiengesellschaft Vacuum interrupter with two contact systems
DE102004031887B3 (de) * 2004-06-30 2006-04-13 Siemens Ag Schaltkontakt für Vakuumschaltröhren
DE102012221844A1 (de) 2012-11-29 2014-06-05 Siemens Aktiengesellschaft Schaltkontakt für Vakuumschaltröhren
DE102015217647A1 (de) 2015-09-15 2017-03-16 Siemens Aktiengesellschaft Schaltkontakt einer Vakuumschaltröhre mit Stützkörpern
WO2017045862A1 (fr) 2015-09-15 2017-03-23 Siemens Aktiengesellschaft Contact de commutation d'un tube commutateur à vide pouvu de corps de support
CN108028150A (zh) * 2015-09-15 2018-05-11 西门子公司 真空开关管的具有支撑体的开关触头
CN108028150B (zh) * 2015-09-15 2020-10-30 西门子公司 真空开关管的具有支撑体的开关触头

Also Published As

Publication number Publication date
JPH0359531B2 (fr) 1991-09-10
DE3464103D1 (en) 1987-07-09
EP0155376A1 (fr) 1985-09-25
US4620074A (en) 1986-10-28
JPS60205925A (ja) 1985-10-17
DE3407088A1 (de) 1985-08-29

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