EP0485306A1 - Mehrpoliger Drehschalter - Google Patents

Mehrpoliger Drehschalter Download PDF

Info

Publication number
EP0485306A1
EP0485306A1 EP91420366A EP91420366A EP0485306A1 EP 0485306 A1 EP0485306 A1 EP 0485306A1 EP 91420366 A EP91420366 A EP 91420366A EP 91420366 A EP91420366 A EP 91420366A EP 0485306 A1 EP0485306 A1 EP 0485306A1
Authority
EP
European Patent Office
Prior art keywords
contact
fixed
envelope
rotary switch
blades
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
EP91420366A
Other languages
English (en)
French (fr)
Other versions
EP0485306B1 (de
Inventor
Mauro Merlin Gerin Begnis
Bernard Merlin Gerin Bouvet
André Merlin Gerin Colella
Jacques Merlin Gerin Gaillard
Richard Merlin Gerin Jacolin
Serge Merlin Gerin Pons
Gérard Merlin Gerin Riva
Claude Merlin Gerin Pinet
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.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
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 Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0485306A1 publication Critical patent/EP0485306A1/de
Application granted granted Critical
Publication of EP0485306B1 publication Critical patent/EP0485306B1/de
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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/48—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/14—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch
    • H01H31/16—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member

Definitions

  • the invention relates to a medium-voltage multipolar rotary switch with a sealed envelope of revolution, filled with a gas of high dielectric strength, the internal periphery of which carries by pole a fixed input contact, a fixed output contact and a contact fixed earthing, which are angularly spaced and which cooperate with a contact bridge in the form of a pivoting knife, carried by a rotary control shaft which extends in the axis of the envelope, the different poles being staggered along said tree inside the envelope, and separated by transverse walls of longitudinal subdivision of the envelope, said tree being able to occupy selectively three positions; an open position, a closed position in which the contact bridge connects said input and output contacts, and a grounding position, in which said contact bridge connects said output and connection contacts Earth.
  • the object of the invention is to increase the contact force in the closed position, and to avoid repulsion at the clamps.
  • the switch according to the invention is characterized in that the two contact blades of said knife are arranged in parallel and are equipped with divergent ends to form at each end a movable contact clamp coming in the closed position enclosing the associated fixed contact which is arranged in contact area, that the two blades are elastically biased against each other, the approximation being limited, when the clamps are released from the fixed contacts by stops framing the central part of each blade, and when said central parts are in the engaged position of the clamps, with small spacing so as to be the seat of electrodynamic forces of significant attraction when they are traversed by the current, this spacing being greater than the deflection generated by said forces to avoid coming into contact with the central parts of the two blades.
  • the approximating electrodynamic forces are thus used to reinforce the contact pressure.
  • the central parts of the blades have a notch of sufficient depth to prevent any coming into contact during a deflection of the blades.
  • the depth of this notch is a few tenths of a millimeter, which makes it possible to conserve significant electrodynamic forces due to the small spacing of the central parts of the blades.
  • the envelope advantageously includes a weakened zone, which constitutes a preferential burst zone in the event of accidental overpressure inside the envelope.
  • This weakened zone is obtained by a reduction in the thickness of the envelope, in this case in the zone of junction of one of the bottoms with the wall of revolution.
  • Figure 1 is a schematic elevational view partially in axial section of a switch according to the invention, shown in the closed position.
  • Figures 2,3 and 4 are sections along line 2-2 of Figure 1 showing the switch respectively in position closed, open and grounded.
  • Figure 5 is a partial view on an enlarged scale of the knife according to Figure 1, shown in the open position.
  • Figure 6 is a view similar to that of Figure 5 showing the knife in the closed position.
  • the medium-voltage three-pole rotary switch comprises a sealed envelope 10, consisting of a tank 11 and a cover 12 of molded plastic, assembled along a joint plane 13.
  • the sealed envelope 10 of general shape cylindrical is subdivided into three compartments, by two transverse walls 14, and the assembly is filled with a gas with high dielectric strength such as sulfur hexafluoride, at atmospheric pressure or under overpressure.
  • the three poles R, S, T of the switch, each housed in one of the switch compartments, are identical, and only one of them is described in detail below.
  • Each pole has a fixed input contact 15, a fixed output contact 16 and a fixed earthing contact 17.
  • These fixed contacts 15,16,17 are arranged on the internal face of the casing 10 and constitute sealed crossings of the casing 10.
  • the fixed output contact 16 comprises a contact pad 18 diametrically opposite the contact pad 19 of the fixed input contact 15, and a fixed contact pad 20 diametrically opposite the fixed contact pad 21 of the earthing contact 17.
  • a movable contact bridge in the form of a rotary knife 22 is carried by a control shaft 23, extending in the axis of the casing 10 and one of the ends 24 of which crosses , in a sealed manner the casing 10, to cooperate with an external control mechanism (not shown).
  • Each knife 22 consists of two blades 25, 26 arranged in parallel, and having divergent ends to form movable contact clamps 27.28 each cooperating with one of the fixed contacts 15,16,17.
  • the fixed input contact 15 is disposed in the bottom of the cover 12, and the latter carries an insulating partition 29, advantageously coming from molding, and extending substantially perpendicular to the joint plane 13, being interposed between the fixed input contact 15 and the grounding contact 17.
  • the insulating partition 29 is adjacent to the fixed input contact 15 and it extends to the periphery of the shaft. control 23, so as to limit the risks of bypass and initiation on the stud 21 of the earthing contact 17.
  • the partition 29 advantageously extends over the entire length of the compartment and its arrangement, next to the fixed contact inlet 15 does not hamper the rotation of the knife 22.
  • openings 36 In the junction zone of the partition 29 and the transverse walls 14 of the compartment are formed openings 36, in the form of notches adjacent to the shaft 23, to allow internal circulation of gases and therefore regenerating the dielectric withstand in the area of the grounding contact pad 17.
  • the envelope 10 advantageously includes a weakened bursting zone 30 in the event of an internal overpressure in the envelope 10.
  • This weakened zone is arranged in the connection zone of the cylindrical envelope 10, and of one of the bottoms 31, by being constituted by a simple groove reducing the thickness of the envelope.
  • This weakened zone 30 is preferably at in the vicinity of the fixed output contact 16, and it allows gases to escape to areas remote from the other poles.
  • FIGS. 1.5 and 6 it can be seen that the contact blades 25, 26 are urged against one another, by springs 32.
  • the bringing together of the blades 25, 26 is limited by stops 33 which frame the central part 34 of the blades 25, 26.
  • the clamps 27, 28 thus remain sufficiently open to engage the ranges of the fixed contacts during a closing movement.
  • the central parts 34 have a notch which confines a slot 35 for spacing the central parts of the blades 25, 26.
  • the width of this slot 35 is a few tenths of a millimeter and can reach one millimeter.
  • the clamps 27, 28 engage on the fixed contacts 15, 16 which force them apart against the force of the springs 32. It is clear that when the blades 25, 26 are traversed by the current flowing between the fixed input and output contacts 15, 16, these blades 25, 26 are subjected to approximating electrodynamic forces which participate in the contact pressure, and limit the risk of repulsion from these contacts.
  • the width of the slot 35 is chosen to be large enough to avoid any contact between the central parts 34 of the bent blades 25, 26. This absence of abutment keeps intact the contact force generated by the electrodynamic forces of attraction between the blades 25,26. These electrodynamic forces of attraction are slightly weaker than in the absence of a notch, but this reduction is acceptable.
EP19910420366 1990-11-06 1991-10-18 Mehrpoliger Drehschalter Expired - Lifetime EP0485306B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9013843A FR2668851B1 (fr) 1990-11-06 1990-11-06 Interrupteur rotatif multipolaire.
FR9013843 1990-11-06

Publications (2)

Publication Number Publication Date
EP0485306A1 true EP0485306A1 (de) 1992-05-13
EP0485306B1 EP0485306B1 (de) 1995-07-26

Family

ID=9401966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910420366 Expired - Lifetime EP0485306B1 (de) 1990-11-06 1991-10-18 Mehrpoliger Drehschalter

Country Status (5)

Country Link
EP (1) EP0485306B1 (de)
CA (1) CA2054509C (de)
DE (1) DE69111571T2 (de)
ES (1) ES2077203T3 (de)
FR (1) FR2668851B1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2719154A1 (fr) * 1994-04-25 1995-10-27 Merlin Gerin Interrupteur électrique moyenne tension.
EP0874380A1 (de) * 1997-04-25 1998-10-28 Soule Materiel Electrique Unterbrechungsvorrichtung für niedrige und Hochspannungstrom
EP1928065A1 (de) * 2006-11-30 2008-06-04 ABB Technology AG Gasisolierter Mittelspannungs-Lasttrennschalter
EP2278601A1 (de) * 2009-07-20 2011-01-26 ABB Technology AG Eingebetteter Teil einer Stange mit einem isolierenden Gehäuse aus thermoplastischem Material
EP2365503A1 (de) * 2010-03-10 2011-09-14 Converteam Technology Ltd Drehschalter
CN102683091A (zh) * 2012-05-14 2012-09-19 北京合锐清合电气有限公司 24kv充气柜负荷开关
US20130153538A1 (en) * 2011-12-20 2013-06-20 Lsis Co., Ltd. Arc extinguishing apparatus for ring main unit
US8729417B2 (en) 2009-07-20 2014-05-20 Abb Technology Ag Method of manufacturing a current terminal for embedded pole part, and pole part itself
CN104779104A (zh) * 2015-05-08 2015-07-15 国网上海市电力公司 一种消弧开关
CN107068469A (zh) * 2017-05-12 2017-08-18 中科电力装备集团有限公司 一种变压器中隔离开关结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2722912B1 (fr) 1994-07-20 1996-09-13 Schneider Electric Sa Interrupteurs electriques moyenne tension
EP2346157B1 (de) 2009-12-18 2012-08-22 Schneider Electric Industries SAS Klemmvorrichtung zum PHASENUMkehr

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197160B (de) * 1962-10-30 1965-07-22 Bbc Brown Boveri & Cie Elektrischer Schalter
DE1293279B (de) * 1963-09-14 1969-04-24 Fritz Driescher Spez Fbk F Ele Mehrpoliger Hochspannungslastschalter
DE3131351A1 (de) * 1980-12-11 1982-10-21 VEB Transformatorenwerk Karl Liebknecht, DDR 1160 Berlin "schaltkontakt, insbesondere fuer hochspannungstrenner"
EP0199044A2 (de) * 1985-04-26 1986-10-29 Concordia Sprecher Energie Gmbh Gekapselter Lastschalter
EP0203373A1 (de) * 1985-05-20 1986-12-03 BBC Brown Boveri AG Trennschalter
FR2628258A1 (fr) * 1988-03-07 1989-09-08 Merlin Gerin Interrupteur rotatif multipolaire a enveloppe etanche commune a tous les poles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618251B1 (fr) * 1987-06-25 1989-11-17 Merlin Gerin Interrupteur rotatif a piste courbe de migration d'une racine d'arc.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197160B (de) * 1962-10-30 1965-07-22 Bbc Brown Boveri & Cie Elektrischer Schalter
DE1293279B (de) * 1963-09-14 1969-04-24 Fritz Driescher Spez Fbk F Ele Mehrpoliger Hochspannungslastschalter
DE3131351A1 (de) * 1980-12-11 1982-10-21 VEB Transformatorenwerk Karl Liebknecht, DDR 1160 Berlin "schaltkontakt, insbesondere fuer hochspannungstrenner"
EP0199044A2 (de) * 1985-04-26 1986-10-29 Concordia Sprecher Energie Gmbh Gekapselter Lastschalter
EP0203373A1 (de) * 1985-05-20 1986-12-03 BBC Brown Boveri AG Trennschalter
FR2628258A1 (fr) * 1988-03-07 1989-09-08 Merlin Gerin Interrupteur rotatif multipolaire a enveloppe etanche commune a tous les poles

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2719154A1 (fr) * 1994-04-25 1995-10-27 Merlin Gerin Interrupteur électrique moyenne tension.
EP0680063A1 (de) * 1994-04-25 1995-11-02 Schneider Electric Sa Elektrischer Mittelspannungsschalter
US5644117A (en) * 1994-04-25 1997-07-01 Schneider Electric Sa Medium voltage electrical circuit breaker and switch
EP0874380A1 (de) * 1997-04-25 1998-10-28 Soule Materiel Electrique Unterbrechungsvorrichtung für niedrige und Hochspannungstrom
FR2762710A1 (fr) * 1997-04-25 1998-10-30 Soule Materiel Electr Dispositif de coupure electrique pour basse et haute tension
EP1928065A1 (de) * 2006-11-30 2008-06-04 ABB Technology AG Gasisolierter Mittelspannungs-Lasttrennschalter
CN102549697A (zh) * 2009-07-20 2012-07-04 Abb技术股份公司 具有由热塑性材料制成的绝缘外壳的嵌入式极部件
EP2278601A1 (de) * 2009-07-20 2011-01-26 ABB Technology AG Eingebetteter Teil einer Stange mit einem isolierenden Gehäuse aus thermoplastischem Material
WO2011009581A1 (en) * 2009-07-20 2011-01-27 Abb Technology Ag Embedded pole part with an isolating housing made of thermoplastic material
US8658930B2 (en) 2009-07-20 2014-02-25 Abb Technology Ag Embedded pole part with an isolating housing made of thermoplastic material
US8729417B2 (en) 2009-07-20 2014-05-20 Abb Technology Ag Method of manufacturing a current terminal for embedded pole part, and pole part itself
EP2365503A1 (de) * 2010-03-10 2011-09-14 Converteam Technology Ltd Drehschalter
WO2011110296A1 (en) * 2010-03-10 2011-09-15 Converteam Technology Ltd Rotary switches
CN103026440A (zh) * 2010-03-10 2013-04-03 Ge能源能量变换技术有限公司 旋转开关
US9040861B2 (en) 2011-12-20 2015-05-26 Lsis Co., Ltd. Arc extinguishing apparatus for ring main unit
US20130153538A1 (en) * 2011-12-20 2013-06-20 Lsis Co., Ltd. Arc extinguishing apparatus for ring main unit
CN103178465A (zh) * 2011-12-20 2013-06-26 Ls产电株式会社 用于环网柜的灭弧装置
CN103178465B (zh) * 2011-12-20 2016-05-04 Ls产电株式会社 用于环网柜的灭弧装置
CN102683091A (zh) * 2012-05-14 2012-09-19 北京合锐清合电气有限公司 24kv充气柜负荷开关
CN102683091B (zh) * 2012-05-14 2014-09-10 北京合锐清合电气有限公司 24kv充气柜负荷开关
CN104779104A (zh) * 2015-05-08 2015-07-15 国网上海市电力公司 一种消弧开关
CN107068469A (zh) * 2017-05-12 2017-08-18 中科电力装备集团有限公司 一种变压器中隔离开关结构
CN107068469B (zh) * 2017-05-12 2019-12-03 中科电力装备集团有限公司 一种变压器中隔离开关结构

Also Published As

Publication number Publication date
ES2077203T3 (es) 1995-11-16
CA2054509A1 (fr) 1992-05-07
DE69111571T2 (de) 1996-06-20
FR2668851A1 (fr) 1992-05-07
DE69111571D1 (de) 1995-08-31
CA2054509C (fr) 2002-01-01
EP0485306B1 (de) 1995-07-26
FR2668851B1 (fr) 1994-10-07

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