EP0456140A2 - Dispositif de contact pour interrupteur à vide - Google Patents

Dispositif de contact pour interrupteur à vide Download PDF

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Publication number
EP0456140A2
EP0456140A2 EP91107265A EP91107265A EP0456140A2 EP 0456140 A2 EP0456140 A2 EP 0456140A2 EP 91107265 A EP91107265 A EP 91107265A EP 91107265 A EP91107265 A EP 91107265A EP 0456140 A2 EP0456140 A2 EP 0456140A2
Authority
EP
European Patent Office
Prior art keywords
pin
contact
arrangement according
slots
cylinder wall
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Withdrawn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
EP91107265A
Other languages
German (de)
English (en)
Other versions
EP0456140A3 (en
Inventor
Günter Pilsinger
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.)
Calor Emag AG
Original Assignee
Calor Emag 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 Calor Emag AG filed Critical Calor Emag AG
Publication of EP0456140A2 publication Critical patent/EP0456140A2/fr
Publication of EP0456140A3 publication Critical patent/EP0456140A3/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Withdrawn legal-status Critical Current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

  • the invention relates to a contact arrangement according to the preamble of claim 1.
  • the object of the invention is to provide a support that is easy to manufacture and assemble, that is capable of transmitting high contact pressures and yet only manages with a small cross section.
  • the pins which predominantly run in the bores, can be subjected to a considerable surface pressure in the axial direction of the contact piece.
  • the hole is easy to make and the pin receives a secure stop on the bottom of the blind hole for transmitting axial forces.
  • the pin provided that it consists of a metallic or metallized ceramic material, can simply be fixed by soldering in the web parts opposite the blind hole with a through hole.
  • the pin is expediently guided up to the end face. It then lies against the contact element placed on the end wall and does not need to be fastened further in the adjacent web part. Pins made of ceramic or ceramic composite material are particularly suitable for this arrangement, which then do not need to be specially prepared for soldering.
  • solder foil already inserted between the contact element and the forehead of the cylinder wall will ensure that the adjacent web part is also soldered.
  • two or more pins may be required per slot length. It is essential that a pin is placed near the start of the slot on the end face of the cylinder wall, since this area is most sensitive to axial compression. When using ceramic pencils, it is advisable to use only those with increased fracture toughness. These are usually made of ceramic composite materials according to subclaims 8 and 9.
  • the pot contact pieces 11 and 12 consist essentially of the pot bottom 13, 14, in which the power supply lines 15, 16 are inserted.
  • the cylinder walls 17, 18 acting as contact carriers are molded onto the base of the pot.
  • Contact elements 20, 21 in the form of disks or annular disks are placed on the end face 19 thereof. Their material differs from that of the cylinder walls because it is directly exposed to the switching arc. It therefore has favorable properties with regard to tear-off current, contact resistance, tendency to sweat and burning.
  • the remaining parts of the contact arrangement generally consist of highly degassed copper material.
  • Slits 22 are made in the cylinder walls 17, 18, which begin at the end face 19 and are led into the pot bottom 13, 14 or its vicinity. They are inclined to the axis of rotation 23 of the contact arrangement or the contact pieces. This creates webs 24, 25 for the current flow, which always contains a directional component inclined with respect to the axis of rotation 23. In the course of the webs shown in the opposing pot contact pieces 11, 12, an arc which arises between the contact elements will form a current loop, the magnetic force of which causes the arc to rotate between the contact elements.
  • the number of webs and their inclination to the axis of rotation can be selected as desired. When they are switched on, they are subjected to very large mechanical forces in the axial direction. In addition to compression, these forces also cause the individual webs to bend to a certain extent towards their side which overhangs the bottom of the pot.
  • the cylinder walls 17, 18 shorten in the axial direction and the webs short.
  • a bore 26, ie a total of four bores is made in the cylinder walls 17, 18 for each slot 22. They are brought down from the end faces 19 into the cylinder walls, in such a way that the web part close to the end 19 is pierced and the underlying web part, located beyond the slot 22, is provided with a blind hole. There should no longer be a slot in the axial direction between the blind hole and the pot base 13, 14.
  • the blind hole can also end in the bottom of the pot itself.
  • the bores are generally located on an average circular diameter of the cylinder wall (see FIG. 2).
  • Cylindrical pins 27 are inserted into the bores. They penetrate the web part or parts that are located between the forehead 19 and the web part with the blind hole and extend to the bottom of the blind hole. On the other hand, they are flush with the forehead 19 of the cylinder walls. After the contact elements 20, 21 are soldered onto the forehead 19, the pins 27 are secured against falling out and fixed in place. This type of placement has the advantage that the pins do not necessarily have to be soldered together, i. that is, there is no need for metallization when using ceramic pins.
  • two pins can be used for each slot with appropriately long bars.
  • a pin must be placed near the start of the slot.
  • the other can be used near the end of the slot.
  • Stainless steel with a sufficiently low electrical conductivity is a suitable metallic material for the pins. This material is solderable, and the pin is included in the soldered connection of the contact elements 20, 21 with the corresponding cylinder wall without further measures.
  • the line shunt created by the metallic pins introduced into the webs is of no importance and therefore negligible due to the low electrical conductivity of the metallic material with regard to the function of the contact.
  • Metallic materials e.g. B. stainless steel, have the advantage over the ceramic materials that they are cheaper and do not break under mechanical overload.
  • Ceramic materials can be upgraded to composite materials by incorporating reinforcing components such as Y2O3 (yttrium oxide), TiC (titanium carbide), TiN (titanium nitride), ZrO2 (zirconium oxide).
  • Y2O3 with dispersed SiC (silicon carbide) fibers has proven to be a particularly suitable material due to its particularly high fracture toughness.
  • Ceramic materials have the advantage over metallic materials that, at least in the virgin state, they do not create a shunt between the individual webs.

Landscapes

  • Ceramic Products (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP19910107265 1990-05-11 1991-05-04 Contact device for vacuum circuit breaker Withdrawn EP0456140A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904015135 DE4015135C2 (de) 1990-05-11 1990-05-11 Kontaktstücke für Vakuumschalter
DE4015135 1990-05-11

Publications (2)

Publication Number Publication Date
EP0456140A2 true EP0456140A2 (fr) 1991-11-13
EP0456140A3 EP0456140A3 (en) 1992-04-08

Family

ID=6406178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910107265 Withdrawn EP0456140A3 (en) 1990-05-11 1991-05-04 Contact device for vacuum circuit breaker

Country Status (2)

Country Link
EP (1) EP0456140A3 (fr)
DE (2) DE9007343U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109671590B (zh) * 2018-12-20 2020-04-10 西安交通大学 带有阴极斑点陷阱结构触头片的触头及直流真空灭弧室及直流真空接触器
CN112397341A (zh) * 2019-08-12 2021-02-23 伊顿智能动力有限公司 用于真空断路器的线圈型轴向磁场接触组件

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015528A1 (de) * 1970-04-01 1971-10-21 Siemens Ag Vakuumschalter
US3622724A (en) * 1970-02-24 1971-11-23 Gen Electric Vacuum-type circuit interrupter having contacts with improved arc-revolving means
GB2038098A (en) * 1978-11-30 1980-07-16 Westinghouse Electric Corp Vacuum-type circuit interrupters
US4839481A (en) * 1988-02-16 1989-06-13 Cooper Industries, Inc. Vacuum interrupter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2947562A1 (de) * 1979-11-26 1981-05-27 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter
DE3009925C2 (de) * 1980-03-14 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Kontaktstück für einen elektrischen Vakuumschalter
DE3302595A1 (de) * 1983-01-27 1984-08-02 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Kontaktanordnung fuer vakuumschalter
NL8401005A (nl) * 1983-03-31 1984-10-16 Mc Graw Edison Co Konstruktie van kontakten van een vacuumstroombreker.
DE3426323A1 (de) * 1984-07-17 1986-01-30 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter
DE3433155A1 (de) * 1984-09-10 1986-03-20 Siemens AG, 1000 Berlin und 8000 München Kontaktanordnung fuer vakuumschalter
DE3828556C1 (en) * 1988-08-23 1990-03-15 Sachsenwerk Ag, 8400 Regensburg, De Contact arrangement for a vacuum switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622724A (en) * 1970-02-24 1971-11-23 Gen Electric Vacuum-type circuit interrupter having contacts with improved arc-revolving means
DE2015528A1 (de) * 1970-04-01 1971-10-21 Siemens Ag Vakuumschalter
GB2038098A (en) * 1978-11-30 1980-07-16 Westinghouse Electric Corp Vacuum-type circuit interrupters
US4839481A (en) * 1988-02-16 1989-06-13 Cooper Industries, Inc. Vacuum interrupter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109671590B (zh) * 2018-12-20 2020-04-10 西安交通大学 带有阴极斑点陷阱结构触头片的触头及直流真空灭弧室及直流真空接触器
CN112397341A (zh) * 2019-08-12 2021-02-23 伊顿智能动力有限公司 用于真空断路器的线圈型轴向磁场接触组件

Also Published As

Publication number Publication date
DE4015135A1 (de) 1991-11-14
EP0456140A3 (en) 1992-04-08
DE9007343U1 (de) 1991-12-19
DE4015135C2 (de) 1995-07-27

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