US3789175A - Electric compressed-gas circuit breaker - Google Patents

Electric compressed-gas circuit breaker Download PDF

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Publication number
US3789175A
US3789175A US00334934A US3789175DA US3789175A US 3789175 A US3789175 A US 3789175A US 00334934 A US00334934 A US 00334934A US 3789175D A US3789175D A US 3789175DA US 3789175 A US3789175 A US 3789175A
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US
United States
Prior art keywords
contact
switching unit
gas
ring
arc
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
US00334934A
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English (en)
Inventor
H Beier
S Handke
W Konczal
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
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
Priority claimed from DE19722220897 external-priority patent/DE2220897C3/de
Application filed by Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of US3789175A publication Critical patent/US3789175A/en
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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle
    • H01H33/7053—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle having a bridging element around two hollow tubular contacts

Definitions

  • a switching unit is movable between closed and open positions for electrically bridging the contact pieces in the closed position and for electrically disconnecting the contact pieces in the open position whereby an arc develops when the switching unit is moved to the open position.
  • a gas-blast arrangement blasts a stream of gas through the are when the switching unit is moved to the open position.
  • the switching unit includes a supporting body and a slide-contact ring made of arcresistant material slideably contacting one of the contact pieces in the closed position.
  • the ring is mounted on the supporting body so as to be electrically insulated therefrom.
  • a plurality of elongated contact elements are disposed in the supporting body for electrically connecting the contact pieces when the switching unit is in the closed position.
  • the contact elements are spring loaded to displace the same into electrically conductive contact with the slide'contact ring as the ring and the contact elements separate from the one contact piece when the switching unit moves into the open position.
  • No. 1,913,973 discloses an electric circuit breaker with a blasting arrangement consisting of a piston and a cylinder and includes two stationary, nozzle-shaped contacts and a bridging contact member which connects the stationary contacts in the closed position.
  • the bridging contact member carries a sliding contact ring of arcresistant material and includes spring-loaded contact members which in the closed position are pressed with the predetermined contact pressure against the corresponding stationary contact under the force of springs corresponding to these members.
  • the cylinder of the blasting arrangement is rigidly coupled with the bridging contact member, so that in the open position it is moved in the same direction as the bridging contact member in the course of the switching motion.
  • the cylinder coacts with the relatively stationary piston of the blasting arrangement so that during the breaking motion the gaseous quenching medium, particularly sulfur hexafluoride (SP is driven into the region of the gap between the two stationary, nozzle-shaped contacts.
  • the known electric circuit breaker operates as a socalled single-pressure circuit breaker.
  • German Pat. No. 1,212,617 discloses a contact arrangement for compressed-gas circuit breakers (dualpressure circuit breakers) wherein the powerinterrupting gap consists of two coaxial nozzle tubes which are arranged at a fixed distance from each other and which are provided with slots for the purpose of generating a magnetic blasting field.
  • the nozzle tubes With the nozzle tubes are associated a common blast valve and a movable bridging contact member which is configured as a tulip-shaped contact and bridges the two nozzle tubes in the closed position.
  • the bridging contact member comprises contact fingers as well as a ring electrode built ahead of these contact fingers with radial slots, the inside diameter of which is larger than the outside diameter of the nozzle tubes.
  • the invention relates to an electric compressed-gas circuit breaker of the so-called single-pressure type.
  • the circuit breaker includes a blasting arrangement consisting of a piston and a cylinder, two stationary nozzle-shaped contacts and a bridging contact unit connecting them in the closed position.
  • the bridge member is equipped with a slide-contact ring of arcresistant material and spring-loaded contact elements.
  • the electric compressed-gas circuit breaker of the invention includes as a feature two stationary contact pieces and a bridging member in the form of a switching unit which is movable between closed and open positions for electrically bridging the contact pieces in the closed position and for electrically disconnecting the contact pieces in the open position whereby an are develops when the switching unit is moved to the open position.
  • Gas-blast means are provided for blasting a stream of gas through the arc when the switching unit is moved to the open position.
  • the switching unit includes a supporting body and a slide-contact ring made of arc-resistant material slideably contacting one of the contact pieces in the closed position. The ring is mounted on the supporting body so as to be electrically insulated therefrom.
  • a plurality of elongated contact elements are disposed in the supporting body for electrically connecting the contact pieces when the switching units is in the closed position.
  • Spring means spring load the contact elements to displace the same into electrically conductive contact with the slide-contact ring as the ring and the contact elements separate from the one contact piece when the switching unit moves into the open position.
  • the switching unit carries the slide-contact ring with electrical insulation interposed.
  • the gas-blast means includes a cylinder for holding the gas therein, and a piston mounted in the cylinder.
  • the cylinder and the piston are mounted with respect to the switching unit so as to cause a relative movement between the piston and the cylinder when the switching unit moves to the open position to impart sufficient energy to the gas for blasting the same through the arc.
  • the contact pieces have a nozzle-like configuration for receiving the gas blasted through the are.
  • the slide-contact ring has on its end face which faces the contact elements a protruding rim which forms a cage for the spring-loaded contact elements. As the contact elements separate from stationary contact, the contact elements are acted upon by springs associated therewith and are therefore braced against the protruding rim of the sliding contact ring and establish a good, electrically conducting connection.
  • the electrical insulation on the free end face of the switching unit forms a slider member which cooperates. with the one stationary contact in the region of the closed position.
  • This slider which can surround the contact with a small amount of play, exposes the gap between the stationary contacts for the quenching gas compressed by the blasting arrangement only after a certain advance of the contact system toward the already drawn arc, so that the compressed quenching and insulating gas is saved up until the arc has reached a length sufficient for favorable control.
  • the arrangement of the slider member results in the additional advantage that small inductive currents can also be reliably interrupted.
  • the slider member is provided with a conical nozzle opening for directing the stream of quenching gas.
  • the flow of quenching gas, which is generated by the blasting arrangement is driven not only in the radial direction in the region of the arc; a substantial axial gas flow component, which drives the are into the center of the nozzle-shaped contacts, is also obtained.
  • the advantage obtained by the projecting slider member and the conical nozzle opening thereof consists in the fact that because the front edge of the sliding contact ring is covered up, the arc is caused to form a loop. Thus, the tendency of the arc to leave the plane of its base at right angles is utilized.
  • the electrodynamic forces generated by the loop formation have the same direction as the forces which the gas stream exerts on the arc. The forces drive the arc toward the center of the contacts.
  • the generation of an axial gas stream component favorable for the quenching of the arc by the conical nozzle opening of the slider member can be improved if the stationary nozzle-shaped contacts are made asymmetrical, as disclosed in Deutsche Auslegungsschridt No. 1,190,077, wherein the contact facing the sliding contact ring has a smaller nozzle orifice than the opposite stationary contact.
  • FIG. 1 is a schematic diagram, in longitudinal section, of an electric compressed-gas circuit breaker according to the invention.
  • the left-half of the diagram shows the switching unit in the open position and the right half, the closed position.
  • FIGS. 2 to 7 show the contact arrangement of the electric compressed-gas circuit breaker according to FIG. 1 for different positions of the switching unit during the opening movement.
  • FIG. 8 illustrates another embodiment of the circuit breaker according to FIG. 1 wherein the switching unit is equipped with a slider member for delaying the exposure of the contact gap to the blasting gas.
  • FIG. 9 illustrates a modification of the embodiment of FIG. 8 wherein the slider member is provided with conical nozzle aperture.
  • the high-voltage circuit breaker of FIG. 1 can be operated, for example, at 1 10 kV and canuse sulfur hexafluoride as the quenching and insulating medium.
  • the parts of the circuit breaker which are at ground potential, the actuator and the standoff insulators are not illustrated.
  • the electric circuit breaker is constructed as a compressed-gas breaker and has a switching chamber l which consists, for example, of porcelain and supports at its upper end a connecting member, not shown in detail.
  • a hollow metallic body 2 is attached to this connecting member.
  • the body 2 protrudes into the interior of the switching chamber 1 and carries a stationary contact 3. Opposite the contact 3 is a stationary contact 4. Both contacts 3 and 4 are made hollow to carry away the switching gases and are configured as nozzles at their respective end faces disposed opposite each other. Y V
  • a switching unit in the form of a bridging contact member 6 having a tubular configuration.
  • Spring-loaded elongated elements 7 are disposed inside contact member 6 and have contact areas 8 which are pushed against the stationary contacts 3 and 4 with a predetermined contact pressure.
  • the bridging contact member 6 carries a slide-contact ring 9 of arc-resistant, electrically conductive material with electrical insulation 10 interposed.
  • the tubular bridg ing contact member 6 is screwed into a coupling member 18 which in turn is connected via fastening elements 19 with a tube 20 of insulating material.
  • the tube 20 constitutes a blast cylinder.
  • the blast cylinder On its face 21, the blast cylinder carries a nozzleshaped body which surrounds the stationary contact 3.
  • the insulating tube 20, for example, is made of one piece of material such as fiber-reinforced plastic.
  • Tie rods 12 engage the coupling member 18 and are pivotally supported at a pin 13.
  • a drive member (not shown in detail) is coupled to the tie rods 12 and moves the breaker from the closed position shown to the right of the center line to the open position shown to the left.
  • the switching chamber 1 is completely filled with sulfur hexafluoride at a pressure of, for example, 4 kg/cm
  • a pressure of, for example, 4 kg/cm When the breaker opens, the contact member 6, together with the tube 20, moves from the top to the bottom.
  • the sulfur hexafluoride inside the tube 20 is compressed in this process because it cannot yet flow out at the beginning of the opening motion. Only when the tube 20 has travelled about half of its stroke do the contact elements 7 of the bridging contact member 6 and the contact ring 9 slide off the stationary contact 3, so that with the metallic separation a discharge clearance is created.
  • the sulfur. hexafluoride, compressed up to this point flows through the discharge clearance to the discharge nozzles which are formed by the two stationary contacts 3 and 4.
  • the arc is commutated here from the contact ring 9 to the burn-off electrodes made of arc-resistant material provided at the contact 4 and is quenched because of the favorable flow conditions which prevail at the nozzles.
  • FIG. 2 is a section view of the stationary contacts 3 and 4 and the bridging contact member 6.
  • the bridging contact member 6 is still engaged and the contact elements 7 are braced with their contact surfaces 8 under the pressure of their springs 17 against the cylindrical outside surface of the stationary contact 3.
  • the current flows along a path indicated by the broken line.
  • the bridging contact member 6 moves into the position shown in FIG. 3, where the contact elements 7 are not yet separated from the contact 3, but rest with projecting extensions 16 on a protruding rim of the sliding contact ring 9.
  • the sliding contact ring 9 forms with its protruding rim 15 a cage for the contact elements 7.
  • the current flows from the contact 3 via the sliding contact ring to the contact elements 7 and from there to the contact 4.
  • FIG. 6 shows a position of the bridging contact member 6 whereat the are 30 commutates from the sliding contact ring 9 to the contact 4.
  • the arc bums between the two stationary contacts 3 and 4.
  • FIG. 8 shows how the insulation 10 can be provided with a slider member 31 which is situated in front of the slide-contact ring 9 and forms the free end of the bridging contact member 6.
  • the slider member 31 surrounds the bridging contact member 6 in the position shown with a small gap so that in the case of small arcs, which occur when small inductive currents are interrupted, no gas flow or only a slight gas flow results initially after the sliding contact ring 9 is separated from the contact 3.
  • the slider member 31 then chokes off the gas flow. Only when slider member 31 releases the gas flow does the gas begin to blast the are so that the danger of a break off prior to the zero crossing of the current, and thereby, the danger of o'vervoltages is largely eliminated.
  • the slider member 31 with a conical nozzle aperture 32 as shown in FIG. 9 which serves to direct the stream of quenching gas.
  • the conical nozzle aperture causes, in addition to the radial flow component, a gas flow in the axial direction, which drives the arc 30 toward the center of the contacts 3,4.
  • This effect of the conical nozzle opening can be aided, as shown in FIGS. 2 to 9, by an asymmetrical nozzle arrangement of the two contacts 3 and 4. in which the nozzle of the contact 4 has a larger diameter than that of the contact 3.
  • the slider member 31 provides the further advantage that the blasting arrangement is better protected against the thermal arc radiation.
  • the polytetrafluoroethylene used for high-power circuit breakers in some applications cast resin can be used which has been used successfully so far in other circuit breakers.
  • the slider member 31 covers up the end face of the sliding contact member 9, so that the arc is forced to form a loop to the stationary contact 3.
  • the electrodynamic forces produced here drive the arc in the desired manner together with the gas stream 33 into the center of the contacts 3 and 4.
  • An electric compressed-gas circuit breaker comprising two stationary contact pieces; a switching unit movable between closed and open positions for electrically bridging said contact pieces in the closed position and for electrically disconnecting said contact pieces in the open position whereby an arc develops when said switching unit is moved to the open position; and gasblast means for blasting a stream of gas through the arc when said switching unit is moved to the open position; said switching unit including a supporting body, a slidecontact ring made of arc-resistant material 'slideably contacting one of said contact pieces in the closed position, said ring being mounted on said supporting body so as to be electrically insulated therefrom, a plurality of elongated contact elements disposed insaid supporting body for electrically connecting said contact pieces when said switching unit is in the closed position, and
  • spring means for spring loading said contact elements to displace the same into electrically conductive contact with said slide-contact ring as said ring and said contact elements separate from said one contact piece when said switching unit moves into the open position.
  • said gas-blast means comprising a cylinder for holding the gas therein, and a piston mounted in said cylinder, said cylinder and said piston being mounted with respect to said switching unit so as to cause a relative movement between said piston and said cylinder when said switching unit moves to the open position to impart sufficient energy to the gas for blasting the same through the arc, said contact pieces having a nozzle-like configuration for receiving the gas blasted through the arc.
  • the circuit breaker of claim 2 comprising a layer of insulation material disposed between said supporting body and said slide-contact ring, said slide-contact ring having an end face directed toward said contact elements, said ring having a rim projecting from said end face to an extent sufficient to form a cage for said contact elements.
  • circuit breaker of claim 2 comprising a layer of insulation material disposed between said supporting body and said slide-contact ring, said layer having an end portion directed away from said slide-contact ring, said end portion being configured as a slider body for coacting with said one stationary contact piece to choke the gas from said gas-blast means in the initial movement of said switching unit to the open position.

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  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
US00334934A 1972-02-22 1973-02-22 Electric compressed-gas circuit breaker Expired - Lifetime US3789175A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2209287A DE2209287C3 (de) 1972-02-22 1972-02-22 Elektrischer Druckgasschalter
DE2215656A DE2215656C3 (de) 1972-02-22 1972-03-27 Elektrischer Druckgasschalter
DE19722220897 DE2220897C3 (de) 1972-04-25 Elektrischer Druckgasschalter

Publications (1)

Publication Number Publication Date
US3789175A true US3789175A (en) 1974-01-29

Family

ID=27184144

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Application Number Title Priority Date Filing Date
US00334934A Expired - Lifetime US3789175A (en) 1972-02-22 1973-02-22 Electric compressed-gas circuit breaker
US00344043A Expired - Lifetime US3855437A (en) 1972-02-22 1973-03-22 Electric compressed-gas circuit breaker
US00348276A Expired - Lifetime US3854019A (en) 1972-02-22 1973-04-05 Electric compressed-gas circuit breaker

Family Applications After (2)

Application Number Title Priority Date Filing Date
US00344043A Expired - Lifetime US3855437A (en) 1972-02-22 1973-03-22 Electric compressed-gas circuit breaker
US00348276A Expired - Lifetime US3854019A (en) 1972-02-22 1973-04-05 Electric compressed-gas circuit breaker

Country Status (6)

Country Link
US (3) US3789175A (de)
CH (3) CH544999A (de)
DE (2) DE2209287C3 (de)
FR (3) FR2172980B1 (de)
GB (2) GB1394545A (de)
NL (1) NL173576C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873793A (en) * 1972-06-27 1975-03-25 Siemens Ag Contact system for a high-voltage apparatus
US3895201A (en) * 1972-07-07 1975-07-15 Siemens Ag Contact arrangement for a high-voltage circuit breaker
US4015095A (en) * 1974-09-17 1977-03-29 Siemens Aktiengesellschaft Contact arrangement for an electric compressed-gas circuit breaker
US5258590A (en) * 1991-08-02 1993-11-02 Gec Alsthom Sa Medium- or high-tension circuit breaker having abutting arcing contacts
US5902980A (en) * 1995-05-24 1999-05-11 Siemens Aktiengesellschaft Insulating component for high-voltage equipment
US6207918B1 (en) * 1996-07-10 2001-03-27 Siemens Aktiengesellschaft Compressed gas power switch
CN103238196A (zh) * 2010-12-02 2013-08-07 西门子公司 电接触装置

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1445217A (en) * 1973-08-02 1976-08-04 Siemens Ag Electrical circuit breaker and contacts therefor
DE2406143C3 (de) * 1974-02-07 1978-04-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektrischer Druckgas-Leistungsschalter mit zwei feststehenden Schaltstücken und einem Brückenschaltstück
DE2438017C3 (de) * 1974-08-05 1981-07-02 Siemens AG, 1000 Berlin und 8000 München Druckgasschalter
DE2540315C3 (de) * 1975-09-08 1978-12-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Druckgasschalter
US4181837A (en) * 1976-09-15 1980-01-01 Westinghouse Electric Corp. Compressed-gas circuit interrupter having insulated contacts
DE2759268C3 (de) * 1977-12-30 1984-08-02 Siemens AG, 1000 Berlin und 8000 München Druckgasschalter
DE2809006A1 (de) * 1978-03-02 1979-09-06 Licentia Gmbh Druckgas-leistungsschalter
DE2833154C3 (de) * 1978-07-28 1982-02-18 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Schalter
FR2443740A1 (fr) * 1978-12-08 1980-07-04 Merlin Gerin Sectionneur sous charge a depression
DE2908982C3 (de) * 1979-03-06 1982-01-28 Siemens AG, 1000 Berlin und 8000 München Elektrischer Druckgasschalter
CH637241A5 (en) * 1979-03-14 1983-07-15 Sprecher & Schuh Ag Sliding-contact device for a switch
FR2476381B1 (fr) * 1980-02-16 1985-10-25 Hitachi Ltd Sectionneur isole par gaz
DE3113325A1 (de) * 1981-03-30 1982-06-24 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschaltkammer
DE3209968A1 (de) * 1982-03-18 1983-09-29 Siemens AG, 1000 Berlin und 8000 München Druckgasschalter
DE3323865C2 (de) * 1983-06-29 1991-01-03 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschaltkammer
DE3822410C1 (en) * 1988-07-01 1989-10-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De Sulphur hexa:fluoride compressed gas switch - has thread between nozzle and cylinder to better withstand force and temp. loading without enlargement of actual mass of nozzle
DE4420386C2 (de) * 1994-05-31 1998-07-02 Siemens Ag Druckgas-Leistungsschalter mit einer Isolierstoffdüse
JPH10223276A (ja) * 1997-02-05 1998-08-21 Mitsubishi Electric Corp 接触子装置
DE10156535C1 (de) * 2001-11-14 2003-06-26 Siemens Ag Leistungsschalter

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE1965853A1 (de) * 1969-12-19 1971-06-24 Siemens Ag Druckkammerschalter

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GB813683A (en) * 1955-02-04 1959-05-21 English Electric Co Ltd Improvements in and relating to gas-blast electric switchgear
BE445974A (de) * 1941-07-18
US2452221A (en) * 1945-08-27 1948-10-26 Pacific Electric Mfg Corp Fluid blast arc extinguishing circuit breaker
FR1307668A (fr) * 1961-12-07 1962-10-26 Brown Interrupteur pneumatique avec contact à tuyère
DE1197156B (de) * 1963-03-06 1965-07-22 Siemens Ag Druckgasschalter
FR1386073A (fr) * 1963-03-22 1965-01-15 Siemens Ag Disjoncteur à gaz comprimé
US3364327A (en) * 1965-01-21 1968-01-16 Westinghouse Electric Corp Compressed-gas circuit breaker with movable orifice contact and configured flow director about stationary contact assembly
CH470068A (de) * 1968-02-08 1969-03-15 Bbc Brown Boveri & Cie Druckgasschalter
FR2057152A5 (en) * 1969-08-01 1971-05-21 Merlin Gerin Contact breaker

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1965853A1 (de) * 1969-12-19 1971-06-24 Siemens Ag Druckkammerschalter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873793A (en) * 1972-06-27 1975-03-25 Siemens Ag Contact system for a high-voltage apparatus
US3895201A (en) * 1972-07-07 1975-07-15 Siemens Ag Contact arrangement for a high-voltage circuit breaker
US4015095A (en) * 1974-09-17 1977-03-29 Siemens Aktiengesellschaft Contact arrangement for an electric compressed-gas circuit breaker
US5258590A (en) * 1991-08-02 1993-11-02 Gec Alsthom Sa Medium- or high-tension circuit breaker having abutting arcing contacts
US5902980A (en) * 1995-05-24 1999-05-11 Siemens Aktiengesellschaft Insulating component for high-voltage equipment
DE19519992C2 (de) * 1995-05-24 2002-03-21 Siemens Ag Schaltstrecke für einen mit einem Löschgas arbeitenden Hochspannungs-Leistungsschalter
US6207918B1 (en) * 1996-07-10 2001-03-27 Siemens Aktiengesellschaft Compressed gas power switch
CN103238196A (zh) * 2010-12-02 2013-08-07 西门子公司 电接触装置
CN103238196B (zh) * 2010-12-02 2015-09-09 西门子公司 电接触装置
US9524837B2 (en) 2010-12-02 2016-12-20 Siemens Aktiengesellschaft Electrical contact arrangement

Also Published As

Publication number Publication date
DE2209287B2 (de) 1974-05-02
DE2220897B2 (de) 1975-10-30
DE2220897A1 (de) 1973-11-08
CH557591A (de) 1974-12-31
FR2172980A1 (de) 1973-10-05
FR2181860A2 (de) 1973-12-07
CH544999A (de) 1974-01-15
CH554596A (de) 1974-09-30
DE2215656B2 (de) 1978-07-27
FR2172980B1 (de) 1976-05-14
NL173576B (nl) 1983-09-01
NL173576C (nl) 1983-09-01
GB1394547A (en) 1975-05-21
FR2177804A2 (de) 1973-11-09
FR2181860B2 (de) 1979-03-16
FR2177804B2 (de) 1977-02-04
DE2209287A1 (de) 1973-09-06
DE2215656C3 (de) 1979-04-05
GB1394545A (en) 1975-05-21
NL7217042A (de) 1973-08-24
DE2209287C3 (de) 1974-12-12
US3854019A (en) 1974-12-10
DE2215656A1 (de) 1973-10-04
US3855437A (en) 1974-12-17

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