EP1026710B1 - Interrupteur pour des installations de commutation à moyenne tension isolées par SF6 - Google Patents

Interrupteur pour des installations de commutation à moyenne tension isolées par SF6 Download PDF

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Publication number
EP1026710B1
EP1026710B1 EP00101480A EP00101480A EP1026710B1 EP 1026710 B1 EP1026710 B1 EP 1026710B1 EP 00101480 A EP00101480 A EP 00101480A EP 00101480 A EP00101480 A EP 00101480A EP 1026710 B1 EP1026710 B1 EP 1026710B1
Authority
EP
European Patent Office
Prior art keywords
contact
switch
arc
switch according
switching
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 - Lifetime
Application number
EP00101480A
Other languages
German (de)
English (en)
Other versions
EP1026710A2 (fr
EP1026710A3 (fr
Inventor
Albert Dipl.-Ing. Bogner
Rolf Dirks
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.)
Ormazabal Anlagentechnik GmbH
Original Assignee
Ormazabal Anlagentechnik GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7896691&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1026710(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ormazabal Anlagentechnik GmbH filed Critical Ormazabal Anlagentechnik GmbH
Publication of EP1026710A2 publication Critical patent/EP1026710A2/fr
Publication of EP1026710A3 publication Critical patent/EP1026710A3/fr
Application granted granted Critical
Publication of EP1026710B1 publication Critical patent/EP1026710B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts

Definitions

  • the invention relates to a switch with trained as a contact blade movable switch contacts for use in SF 6 -Mittelthesesschaltanlagen, in particular a three-position power switch, whose phases are each associated with a quenching coil as an arc quenching device.
  • a three-position circuit breaker with the ON-OFF GEERDET positions must be able to safely carry and switch the rated and short-circuit currents with its contact system, without the contacts becoming welded or mechanically failing.
  • the switching ability is u.a. thereby ensuring that the arc generated during switching is kept as short as possible between the fixed contact and the movable switching contact of the respective phase and rapidly extinguished by an arc quenching device, so that the temperature load on the contacts remains low.
  • Significant forces are required to switch the moving switch contacts of a three-position circuit breaker.
  • the object of the invention is to provide a switch with trained as a contact blade movable switch contacts for use in SF 6 -Mittelthesesschaltanlagen according to the preamble of claim 1, which facilitates switchable and its erosion resistance is increased in ensuring the continuous current carrying capacity.
  • the generic switch is formed from a formed with at least one contact blade and operable via a switching shaft switching contact, a fixed contact and an arc quenching device.
  • the invention consists in the fact that the one pivotally mounted shaft and a substantially formed in a plane perpendicular to the pivot axis contact surface for the fixed contact having contact blade is formed so that the contact surface is formed on a relative to the shaft considerably thicker contact head and this for a Arc forming during switching consists in part of a burn-off-resistant, high-temperature-resistant tungsten-copper alloy.
  • This design of the contact blade makes it possible to significantly reduce the mass of the switching contact, thus reducing the drive energy for its switching movement.
  • the continuous current carrying capacity is ensured by the fact that the contact surface is formed for the fixed contact on the existing copper part of the contact head.
  • the existing of the tungsten-copper alloy part of the contact head increases the heat resistance of the switching contact in the area acted upon by an arc and prevents it in a burn-off at the switching contact.
  • the contact head is fixed contact side spherically formed, so that the current transition between the copper region of the contact head and the copper contact surface of the fixed contact can be made, and the switch blade can be slotted in the longitudinal direction at least in the region of the contact head centered to share the current to be passed.
  • the arc has a switch-contact-side and a fixed-contact-side base point, it is expedient to form a surface which receives the respective foot point at the respective contact substantially at right angles to the arc.
  • shock absorbers In order to damp the striking of the switching contact in a switching contact movement in the respective end position, it is advantageous to arrange shock absorbers in the defined end positions.
  • a three-position circuit breaker is shown with one of two parallel contact blades 1 (also Fig. 4) formed of copper actuated switch contact, a fixed contact 2 and a quenching coil 3.
  • the contact blade 1 forming the switching contact is pivotally mounted about a pivot axis S and can be actuated jointly via a connecting rod 4 and a rocker arm 6 which is connected in a rotationally fixed manner to a switching shaft 5.
  • They each have a shaft 7 and a fixed contact 2 with the corresponding contact surface 8, which, like two opposing contact surfaces 9 of the fixed contact 2, is formed in a plane perpendicular to the pivot axis S.
  • Fig. 4 shows that this is formed on a relative to the shaft 7 considerably thicker contact head 10.
  • the contact head thickness is about one and a half to two times the thickness of the shaft.
  • the contact head 10 is made of copper and has a tip 11 made of a high-temperature resistant tungsten-copper impregnated alloy with 30% copper, which is subjected to high thermal stress by an arc forming during switching.
  • Fixed contact side of the contact head 10 is formed spherical and is pressed by a spring force F against the fixed contact 2.
  • This consists of Copper and, in the region corresponding to the tip 11 of the contact head 10 also has a tip 12 made of said high-temperature resistant tungsten-copper impregnated alloy.
  • the tip 11 abuts against a shock absorber 13.
  • Fig. 2 the switch is shown in a movement phase between the switch positions ON and OFF. Between the tips 11 and 12 of the two switch contacts 1 and 2, an arc LB is formed, which has its two bases each on a substantially perpendicular to the arc-shaped surface 14 and 15 at the respective tip 11 and 12 respectively.
  • FIG. 3 shows the switching contact 1 resting against a ground contact 16 and a shock absorber 17 in the switch position GEERDET.
  • the tip 11 of the visible switch blade 1 corresponds to a region 18 formed at the grounding contact.
  • a contact fair 1 is shown in a side view and in a plan view. In the latter, a centrally formed in the region of the contact head 10 in the longitudinal direction gap 19 can be seen, which serves a current division.
  • Figs. 7a and 7b show further alternative embodiments of a contact blade 1, which differ by the formation of the tungsten-copper tip.
  • a tip 20 which is reduced to the front edge of the contact head 10 and in FIG. 7 b a half-side tip 21 can be seen in contrast to the previously described embodiment.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Contacts (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Lubricants (AREA)

Claims (7)

  1. Interrupteur destiné à être utilisé dans des installations de distribution électrique à moyenne tension isolées au SF6, constitué d'un contact de commutation pouvant être actionné avec au moins une lame de contact (1), un contact fixe et un dispositif d'extinction d'arc électrique, la lame de contact (1) comportant une tige (7) montée pivotante et une surface de contact (8), réalisée dans un plan sensiblement perpendiculaire à un axe de pivotement (S), pour le contact fixe, caractérisé en ce que la surface de contact (8) est réalisée sur une tête de contact (10) considérablement plus épaisse que la tige (7), et en ce que la tête de contact (10), dans la partie (11, 20, 21) sollicitée thermiquement par un arc électrique (LB) se formant lors de la commutation, est constituée d'un matériau résistant aux hautes températures.
  2. Interrupteur selon la revendication 1, caractérisé en ce que le contact fixe (2), dans la partie (12) sollicitée thermiquement par l'arc électrique (LB), est constitué d'un matériau résistant aux hautes températures.
  3. Interrupteur selon la revendication 1 ou 2, caractérisé en ce que le matériau résistant aux hautes températures est un alliage imprégné de tungstène et de cuivre avec 30 % de cuivre.
  4. Interrupteur selon la revendication 1, caractérisé en ce que la tête de contact (10) est réalisée bombée côté contact fixe.
  5. Interrupteur selon la revendication 1, caractérisé en ce que la lame de contact (1) est fendue au milieu dans la direction longitudinale, au moins dans la zone de la tête de contact (10).
  6. Interrupteur selon la revendication 1 ou 2, caractérisé en ce que la partie (11, 12, 20, 21), constituée du matériau résistant aux hautes températures, est conçue de manière que celle-ci présente une surface (14, 15), réalisée sensiblement perpendiculairement à l'arc électrique (LB), pour le point de pied respectif de l'arc électrique (LB).
  7. Interrupteur selon une ou plusieurs des revendications précédentes, caractérisé en ce que dans les positions terminales définies (MARCHE, MIS A LA TERRE) du contact de commutation sont disposés des amortisseurs de choc (13, 17) pour la tête de contact (10).
EP00101480A 1999-02-06 2000-01-26 Interrupteur pour des installations de commutation à moyenne tension isolées par SF6 Expired - Lifetime EP1026710B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904930A DE19904930C2 (de) 1999-02-06 1999-02-06 Schalter für den Einsatz in SF6-Mittelspannungsschaltanlagen
DE19904930 1999-02-06

Publications (3)

Publication Number Publication Date
EP1026710A2 EP1026710A2 (fr) 2000-08-09
EP1026710A3 EP1026710A3 (fr) 2001-11-14
EP1026710B1 true EP1026710B1 (fr) 2006-04-12

Family

ID=7896691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00101480A Expired - Lifetime EP1026710B1 (fr) 1999-02-06 2000-01-26 Interrupteur pour des installations de commutation à moyenne tension isolées par SF6

Country Status (6)

Country Link
EP (1) EP1026710B1 (fr)
AT (1) ATE323319T1 (fr)
DE (2) DE19904930C2 (fr)
ES (1) ES2261110T3 (fr)
NO (1) NO319046B1 (fr)
PT (1) PT1026710E (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2687407T3 (es) * 2009-05-04 2018-10-25 Abb Schweiz Ag Disposición de contacto de interruptor de línea de media tensión
FR2979746B1 (fr) 2011-09-01 2016-07-01 Socomec Sa Appareil de coupure electrique a haute tenue electrodynamique
FR2979744B1 (fr) 2011-09-01 2015-05-01 Socomec Sa Appareil de coupure electrique a haut pouvoir de fermeture
FR2979743B1 (fr) 2011-09-01 2013-08-30 Socomec Sa Chariot porte contact mobile et appareil de coupure electrique equipe d'un tel chariot
EP2822013A1 (fr) * 2013-07-05 2015-01-07 ABB Technology AG Commutateur de puissance haute tension avec unité de commutation haute tension
WO2019058631A1 (fr) * 2017-09-21 2019-03-28 三菱電機株式会社 Commutateur
CN112136198B (zh) * 2018-05-10 2023-04-28 三菱电机株式会社 开关

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT228318B (de) * 1961-08-09 1963-07-10 Plansee Metallwerk Kontakte für Hochspannungsschalter
AT286423B (de) * 1969-01-27 1970-12-10 Plansee Metallwerk Elektrischer Kontakt
FR2048151A5 (fr) * 1969-06-02 1971-03-19 Merlin Gerin
US3691335A (en) * 1971-03-01 1972-09-12 Westinghouse Electric Corp Knife blade contact assembly with improved contact engagement position retaining means
DE2353627C3 (de) * 1973-10-26 1979-03-22 Felten & Guilleaume Schaltanlagen Gmbh, 4150 Krefeld Rohrlöscnkammer for Mittelspannungs-Lasttrennschalter
DE7429574U (de) * 1974-09-03 1974-12-05 Bbc Ag Kontaktstück
DE3820489A1 (de) * 1988-06-16 1989-12-21 Felten & Guilleaume Energie Gekapselte lasttrennschalteranordnung
US5013876A (en) * 1988-09-12 1991-05-07 S&C Electric Company Switch contacts with improved fault-closing capability
US5021615A (en) * 1989-09-29 1991-06-04 Cooper Power Systems, Inc. On/off loadbreak switch
DE4040902C2 (de) * 1990-12-20 1996-01-11 Felten & Guilleaume Energie Kipprohrlasttrennschalter

Also Published As

Publication number Publication date
EP1026710A2 (fr) 2000-08-09
EP1026710A3 (fr) 2001-11-14
DE19904930C2 (de) 2000-12-14
PT1026710E (pt) 2006-07-31
DE19904930A1 (de) 2000-08-31
DE50012546D1 (de) 2006-05-24
NO20000566D0 (no) 2000-02-04
ATE323319T1 (de) 2006-04-15
ES2261110T3 (es) 2006-11-16
NO319046B1 (no) 2005-06-06
NO20000566L (no) 2000-08-07

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