EP3529820A1 - Dispositif de commutation électrique - Google Patents

Dispositif de commutation électrique

Info

Publication number
EP3529820A1
EP3529820A1 EP17816493.5A EP17816493A EP3529820A1 EP 3529820 A1 EP3529820 A1 EP 3529820A1 EP 17816493 A EP17816493 A EP 17816493A EP 3529820 A1 EP3529820 A1 EP 3529820A1
Authority
EP
European Patent Office
Prior art keywords
switching contact
contact piece
switching
electrical
fluidströmungsleiteinrichtung
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.)
Pending
Application number
EP17816493.5A
Other languages
German (de)
English (en)
Inventor
Christian Dengler
Roland MONKA
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 Energy Global GmbH and Co KG
Original Assignee
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3529820A1 publication Critical patent/EP3529820A1/fr
Pending legal-status Critical Current

Links

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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7084—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by movable parts influencing the gas flow
    • 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
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
    • 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
    • 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
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers

Definitions

  • the invention relates to an electrical switching device comprising a first switching contact piece and a second switching contact piece, wherein the switching contact pieces are movable relative to ⁇ each other and the first switching contact piece is encompassed by a Fluidströmungsleit vibration.
  • Such an electrical switching device is ⁇ example, from the published patent application DE 31 42 183 AI known.
  • the local switching device has a first switching contact ⁇ piece and a second switching contact piece, which are movable relative to each other.
  • the first switching contact piece is arranged on a carrier and encompassed by a fluid flow guide device.
  • the Fluidströmungsleit noise causes a flushing of the first switching contact piece and forms a bottleneck in front of an end face of the first Wegjorstü- ckes.
  • An arc is blown in the bottleneck of the Fluidströ ⁇ mungsleit Sk.
  • a blowing out the arc is less than optimal strigct ⁇ zen.
  • this object is achieved in an electrical switching device of the type mentioned in that the Fluidströmungsleit issued the first switching contact on the shell side engages such that a Hüllkontur limited between the Fluidströmungsleit Vietnamese and the first switching contact piece flow channel at least at its the second switching contact piece end facing is greater than the envelope contour of the first switching contact piece at its end facing the second switching contact piece.
  • An electrical switching device is used to interrupt a current path.
  • the current path may carry an electric current while under voltage, which is also to interrupt with the interruption of the electrical current path.
  • switching contacts which are movable relative to one another can be used, between which an isolating distance is generated during a switch-off or opening process.
  • the switching contact pieces may be arranged opposite one another on the front side and be displaceable relative to one another along a longitudinal axis. The switching contact pieces are exposed to an electrically insulating fluid, which in a emergence of the
  • Separation path also flows into the separation section.
  • the switching ⁇ contact pieces or the separation section can be specifically exposed to a fluid flow.
  • An optionally flowing electric current can be separated from one another in the form of an arc when the switching contact pieces are separated
  • Such arc prevents a direct interrup ⁇ chen an electric current with a galvanic separation of the switching contacts. Accordingly, such an arc is generally undesirable and should preferably not arise or be safely deleted.
  • An electrical switching device may be, for example, a load switch, a circuit breaker, a grounding switch, a circuit breaker or a similar switching device.
  • Contacting the switching contacts should take place at a relative speed of about 3.5 m / s to 5 m / s, in particular ⁇ sondere about 4.5 m / s.
  • a separation of the switching contact pieces should take place at a relative speed of about 0.7 m / s to about 5 m / s, in particular about 1.4 m / s.
  • Fluidströmungsleit By means of the Fluidströmungsleit founded certain areas of a separation path, which is formed in a switching operation between the two switching contact pieces to flow particularly intense. For example, a flow of fluid flow around the separating path shell side and form a flow ⁇ barrier.
  • fluids are, for example, electically ⁇ insulating fluids in the gaseous or liquid state such.
  • nitrogen carbon dioxide, Schwefelhexa- fluoride, fluoroketones, fluoronitriles, fluorinated peroxides or other, having sufficient insulation resistance substances.
  • the fluid flow guiding device can embrace the first switching contact piece.
  • the first switching contact piece is at least partially covered or covered by the fluid flow guiding device on an outer circumferential surface .
  • the Fluidströmungsleit might the first switching contact piece, for example, the outer sheath side completely, z. B. annular / tubular, enclose.
  • the fluid flow guide device may have closed flow surfaces.
  • flow surfaces are broken, so that a turbulence of a flowing fluid is supported.
  • the first switching contact piece can be encircled by the fluid flow guiding device in a concentric manner.
  • both the first switching contact piece and the Fluidströmungsleit observed each be substantially aligned to a longitudinal axis, coaxially or formed.
  • the fluid flow guide device can be tubular in shape at least in sections and aligned coaxially with a contact piece.
  • a flow channel may be delimited, for example, on the inner shell side by the first switching contact piece and on the outer shell side by the fluid flow guiding device.
  • An envelope contour of the flow channel can be defined by an outer cross section of the flow channel. With a flow channel with In a substantially circular cross-section, the envelope contour is defined by the outer diameter of the flow channel.
  • the envelope contour of the first switching contact piece can be defined by the outer cross section of the first switching contact piece.
  • the envelope contour of the flow channel can completely shade the envelope contour of the first switching contact piece.
  • the Strö ⁇ flow duct may vary by a profiling of the bounding it Fluidströmungsleit Skelet Skelet Skelet Skelet Skelet Skelet
  • the envelope contour of the flow channel can completely shade the envelope contour of the first switching contact piece.
  • the Strö ⁇ flow duct may vary by a profiling of the bounding it Fluidströmungsleit Skelectivos, or of the first switching contact piece in cross-section. By profiling, jamming or expansion of a fluid flow within the flow channel can be generated, so that a fluid flow can be influenced.
  • the front side (the second Druckkon ⁇ contact piece) given free access to the first switching contact piece.
  • nozzle-like constrictions of the fluid flow guiding device are avoided before the first switching contact piece, ie before the free end of the first switching contact piece, which faces the second switching contact piece.
  • the Fluidströmungsleit Sleeper should have sufficient temperature resistance to withstand a Cypruswir ⁇ effect starting from an arc.
  • the fluid flow guide device can act as an electrical insulator.
  • the fluid flow guide may be electrically conductive.
  • the Fluidströmungsleit boots may, for example, a metal, an insulating material, for. As PTFE, etc. have.
  • a further advantageous embodiment can provide that an outer circumferential surface of the first switching contact piece is accessible at its end facing the second switching contact piece from the radial direction.
  • a radial access to the first switching contact piece makes it possible to use the outer circumferential surface of the first Druckjorstü ⁇ ckes to provide there, for example, contact points for contacting with the second switching contact piece. So it is possible, for example, that the second
  • the Switching contact piece outer shell side is pushed onto the first Heidelberg ⁇ contact piece and a contact in the region of an outer circumferential surface of the first switching contact piece follows. Accordingly, a wide flushing of the Kontak ⁇ t istsquit can take place in an inventive Anord ⁇ voltage of a flow channel, thereby encasing an arc can be carried by the fluid stream. This prevents the arc from breaking out and causes efficient cooling of the arc.
  • the flow passage z. B. funnel-like cross-sectional enlargement
  • a further advantageous embodiment can provide that the first switching contact piece with its end facing the second switching contact piece projects beyond the fluid flow guiding device.
  • Switching contact piece via the (from) the second switching Contact-facing end of the flow guide is a free end of the first switching contact piece is formed, which is free in the radial direction of an overlap by the Fluidströmungsleiteiiques.
  • a mouth opening of the flow channel is withdrawn behind the free end of the first switching contact piece, so that a ⁇ kick a fluid flow can be done on the shell side on the first switching contact piece.
  • the mouth opening and the front-side free end (the end facing the second switching contact piece) of the first switching contact piece are axially zuei ⁇ spaced apart. It is possible to arrange contact points for the second switching contact piece on the shell side on the first switching contact piece so that these contacting areas can be flowed out of the flow channel during a contact separation and between the two
  • Switching contact pieces a hollow cylindrical (coat-like) flushing of the separation section with electrically insulating fluid is caused.
  • the first switching contact piece is a bolt-shaped switching contact piece.
  • a bolt-shaped switching contact piece is a mechanically resistant structure, which has a high Stromtragfä ⁇ ability.
  • contacting points are usually arranged on the outer shell side, ie in the region which is encompassed by a fluid flow conducting device.
  • Areas of the first switching contact piece as well as tion points on the first switching contact piece can be arranged offset from each other axially.
  • a fluid flow flowing around a bolt-shaped first switching contact piece is directed by the fluid flow guiding device to a sleeve-shaped second switching contact piece.
  • Fluid flow can advantageously be guided by the pin-shaped first switching contact piece on a sleeve-shaped second contact ⁇ tee.
  • an outflow of fluid for example from an orifice of a flow channel, which extends around the first switching contact ring around the annular gap form, it is possible to enclose a separation path from the bolt-shaped switching contact piece to the socket-shaped switching contact piece with a jacket of flowing fluid and within this fluid-sealed separation section to burn an arc.
  • By wrapping the arc it can be fully cooled and blown regardless of its location. A displacement of fluid fluid flow in edge regions of the separation distance can be counteracted.
  • a further advantageous embodiment can provide that the fluid flow guiding device and the first switching contact piece are movable.
  • Both the fluid flow guiding device and the first switching contact piece can each be arranged to be movable.
  • the Fluidströmungsleit styles and the first Schalktitch be relatively movable.
  • the first switching contact piece and the Fluidströmungsleit noise are movable together.
  • a further advantageous embodiment can provide that the fluid flow guide is arranged at an angle to the first switching contact pieces.
  • the fluid flow guide device can, for example, rest on the first switching contact piece.
  • the fluid flow guide device can be seated on the outer shell side on a bolt-shaped first switching contact piece.
  • the flow-deflecting device can be non-positively connected to the first switching contact piece.
  • An angularly rigid composite of first switching contact piece and fluid flow guide device can be arranged to be movable.
  • a further advantageous embodiment may provide that the first switching contact piece is at least partially hollow.
  • An at least partially hollow configuration of the first switching contact piece makes it possible to reduce the mass of the switching contact piece.
  • inefficiently used material on the first switching contact piece can be dispensed with. So it is for example It is possible to use an at least partially hollow cylindrical first switching contact piece, which cooperates with a fluid flow guiding device.
  • Switching contact piece for example, the front side have a hollow configuration, resulting in opportunities to stabilize the first switching contact piece in its position by the end face, for example, rests against a guide element or a centering and so swinging ver ⁇ prevents.
  • a hollow portion of the ERS th switching contact piece can also be used to flow a fluid to pass, for example, the same, or at least parts of the ⁇ same, which is guided in the flow channel between flow-deflecting device and the first switching contact piece.
  • a further advantageous embodiment can provide that a fluid flow is guided both inside and outside the first switching contact piece.
  • a fluid flow may extend both inside and outside the first switching contact piece. It can be easily seen ⁇ that the fluid flow from the interior of the first switching contact piece is guided in the flow channel to außman ⁇ telcharacterization of the first switching contact piece, so that the first switching contact piece at least partially undergoes a fluid distribution both from the inside and from the outside, whereby in addition a flow on an arc and cooling on the first switching contact piece can be carried out by the fluid flow.
  • an at least partially hollow first switching contact piece can use a cavity located in its interior to guide a fluid flow.
  • a further advantageous embodiment can provide that the fluid flow traverses a wall of the first switching contact piece.
  • a wall may have a communication opening to direct fluid flow from inside the first
  • the flow channel can be fed from the interior of the first switching contact piece.
  • an axial offset of a innenwoire conferwoire and guided on the first switching contact piece fluid flow may be provided.
  • a laminar flow can be generated on the outer shell side on the first switching contact piece.
  • a flow channel is limited with a substantially circular cross-section.
  • the flow channel between the first switching contact piece and the fluid flow deflection device may have a substantially annular cross-section.
  • the annular cross-section may be at least partially constant.
  • the cross section of the flow channel should be constant, so that before a leakage of fluid flow through the mouth opening of the flow channel, a calm and
  • the flow channel should have a substantially hollow cylindrical course with a constant cross section.
  • an enlargement of the cross section of the flow channel takes place, so that, for example, a funnel-like diffuser effect is achieved, whereby a scattering of the fluid flow in the region of the mouth opening is increased and the flow velocity is reduced.
  • Be ⁇ rich then the possibility is given to be able to access from the radial direction on the shell-side region of the free end of the first switching contact piece.
  • a further advantageous embodiment can provide that in the contacted state of the switching contact pieces by means of Fluidströmungsleit announced an opening in a shield cap of the second switching contact piece is dammed.
  • the second switching contact piece may be surrounded by a shield cap for the purpose of dielectric shielding, wherein the second switching contact piece has an opening in the
  • a burn-off-resistant region of the first switching contact piece is free of radial overlap by the fluid flow-guiding device.
  • the first switching contact piece can be formed as a so-called power ⁇ contact piece and serve to guide a Lichtbo ⁇ gene.
  • at least portions of the first switching contact piece are made of a erosion-resistant material, so that a erosion-resistant area on the first
  • the erosion-resistant region of the first switching contact piece should be free of radial overlap by a fluid flow guiding device. This makes it possible to migrate foot points of a burning arc on the erosion-resistant area and distribute so the erosive power on a largeêtnbe ⁇ rich, while a suitable fluid distribution with- means of making a Fluidströmungsleit till.
  • the arc can also outside the shell side are based on a radially non-covered area of the first Druckjorstü ⁇ ckes. As a result, a thermal load of the fluid ⁇ strömungsleit adopted is reduced.
  • the erosion-resistant region can be exposed to a fluid flow, so that the arc can be constricted and compacted within the separation path by the fluid flow.
  • the erosion-resistant area can limit an isolating distance.
  • a further advantageous embodiment may provide that the switching contact pieces against ste ⁇ basis are displaceable relative to each another end face.
  • Switch contact pieces can face each other at the front.
  • the switching contact pieces may be formed as a pin and opposite bush, so that by means of a linear movement retraction or retraction of a bolt in / from a book ⁇ se is possible.
  • the formation of a flow mantle is further ge ⁇ promotes around the separation distance, as continuously parallel to the relative movement of the two switching contact pieces running flow can be generated in shell form around the separation distance. A deflection or transverse conduction of a free-flowing fluid flow is thus unnecessary. This supports the Eindäm ⁇ tion and constriction of an arc within a
  • the socket-shaped second switching contact piece has a centering pin in a socket opening.
  • a centering pin in a bushing opening makes it possible to support a single or extension of a bolt into a rela ⁇ hung, from a bushing.
  • a swinging or swinging of the bolt can be prevented by the bolt drives onto the centering pin.
  • the bolt may be formed, for example, hollow frontally, so that the centering pin can protrude into the bolt.
  • a contact of the centering pin does not occur.
  • a corresponding fit with play between the centering pin and the first switching contact piece can be provided.
  • a swing in the context of the fit is allowed. Only larger vibration conditions are limited.
  • the centering pin acts as part of the contact system.
  • the centering pin only assumes a mechanical function and is not involved in an electrical function of the contact system.
  • Figure 1 is an electrical switching contact arrangement in the on state
  • FIG. 1 shows a cross section through an electrical switching device. The basic structure of the electrical switching device will first be described with reference to FIG.
  • the electrical switching device shown in Figure 1 is a so-called grounding switch, can be applied to the power transmission serving busbar portion with Erdpo ⁇ tential by means of which.
  • the electrical switching input ⁇ direction is designed as a pressure-fluid-insulated switchgear.
  • the electrical switching device has a housing 1.
  • the housing 1 is formed as a fluid-tight enclosure, so that in the interior of an electrically insulating Fluid can be included. By the housing 1, a volatilization of the electrically insulating fluid is prevented.
  • the housing 1 is formed, for example, as a ground potential leading metallic housing 1, wherein the enclosed in the interior of the housing 1 electrically insulating fluid is pressurized.
  • the groundable by means of the electrical switching device busbar section is also disposed within the housing 1.
  • the groundable busbar section is arranged outside of the hous ⁇ ses 1 or in an adjacent housing in a separate fluid space, wherein only an electrical contact with the electrical switching device is provided hen hen.
  • the electrical switching device has a first switching contact piece 2 and a second switching contact piece 3.
  • the first switching contact piece 2 is designed as a pin-shaped switching contact piece 2.
  • the second switching contact piece 3 is designed as a socket-shaped switching contact piece 3.
  • the second switching contact piece 3 is mounted on the housing 1 and electrically contacted with this, so that the ground potential of the housing 1 is also transmitted to the second switching contact piece 3.
  • the second switching contact piece 3 has a plurality of radially distributed around a longitudinal axis 4 on ⁇ ordered contact fingers, so that a socket opening 5 is limited to form a socket. Centric in the socket opening 5, a centering pin 6 is arranged.
  • the centering pin 6 carries the same electrical potential as the bushing opening 5 limit ⁇ the contact fingers.
  • the centering pin 6 In the direction of the longitudinal axis 4 of the centering pin 6 projects beyond the bushing opening 5 limiting contact fingers. At its end, which projects beyond the bushing opening 5, the centering pin 6 is equipped with a burn-off-resistant tip.
  • the centering pin 6 is rigidly connected via a socket of the second Schaltrust foundedes 3 with the hous ⁇ se 1 and electrically contacted with this.
  • the second contact piece 3 is arranged in the shield shade of a screen hood 7.
  • the shield cover 7 is present in the dome-shaped We ⁇ sentlichen and formed of an electri- cally conductive material.
  • the screen hood 7 carries the same electrical potential as the housing 1.
  • the screen hood 7 is mounted together with the second switching contact ⁇ piece 3 on the housing 1.
  • the screen hood 7 has an opening 8. About the opening 8 is an access to the
  • Socket opening 5 of the second switching contact piece 3 made ⁇ light.
  • the socket opening 5 opposite the front side, the drivable and thus movable first switching contact piece 2 is arranged.
  • the first switching contact piece 2 is formed substantially hollow cylindrical.
  • Outer casing side on the first switching contact piece 2 is seated on a Fluidströmungsleit noise 9.
  • the Fluidströmungsleit responded 9 is rigidly connected to the first switching contact piece 2.
  • the fluid flow guiding device 9 furthermore has an inner lateral surface which is positioned at a distance from an outer lateral surface of the first switching contact piece 2, so that a flow channel 10 is formed between the outer lateral surface of the first switching contact piece 2 and the inner lateral surface of the fluid flow guiding device 9.
  • the flow channel 10 in this case has a substantially annular cross-section, which has over its extent substantially a constant cross-section, so that the flow ⁇ channel 10, which of the outer circumferential surface of the first
  • the flow channel 10 has at the free end of the first switching contact piece 2 or on the second switching contact piece 3 facing the end of a mouth opening 11.
  • the mouth opening 11 in turn has an annular cross-section, which leads to the course of the flow channel 10 a substantially same. chen cross-section.
  • the substantially zy ⁇ lindrisch configured Fluidströmungsleit Vietnamese 9 is positioned on the first switching contact piece 2, that the first switching contact piece 2, the Fluidströmungsleit responded 9 in the direction of the second switching contact piece 3 (with its free end) surmounted.
  • Front side of the first switching contact piece 2 formed by a Abbrandfesten tip, which is free of radia- len cover by the Fluidströmungsleit adopted 9 as abbrandfester Be ⁇ rich the first switching contact piece 2.
  • Switching contact piece 2 is the second switching contact piece 3 facing the front end of the first Weguttonstü ⁇ ckes 2 centrally provided with a recess into which the centering pin 6 protrudes in the on state.
  • the centering pin 6 can stabilize a linear displacement of the first switching contact piece 2 relative to the second switching contact piece 3, in particular when entering the socket opening 5 of the second switching contact piece 3.
  • the central recess within the first switching contact piece 2 is dammed with a barrier 13, which limits the immersion depth of the centering pin 6.
  • Switch contact piece 3 side facing away from the barrier 13 break through in the peripheral region communication openings 14 a wall of the first switching contact piece 2.
  • the communication Openings 14 in the wall of the hollow cylindrical first switching contact piece 2 allow communication of a cavity in the interior of the first switching contact piece 2 with the flow channel 10.
  • a piston 15 is arranged, which is movable relative to the first switching contact piece 2.
  • the piston 15 may be arranged stationary to the housing 1, where ⁇ against the first switching contact piece 2 can be movably arranged to the housing 1 and thus movable to the piston 15.
  • switching on or off of the electrical switching device can be carried out by driving the first switching contact piece 2.
  • the piston 15 is seated complementary in shape in the recess of the hollow first switching contact piece. 2
  • FIGS. 1, 2, 3 and 4 a switch-off operation, ie a release of a grounding connection to the busbar section, will be described.
  • the switched-on state of the first and second switching contact piece 2, 3 is initially shown in FIG. Ie. the first switching ⁇ contact piece 2 is first with the second switching contact ⁇ piece 3 in electrical connection, so that the ground potential of the housing 1 is transmitted via the second switching contact piece 3 on the first switching contact piece 2 and from there to the grounded busbar section.
  • a switch-off ⁇ operation a movement is coupled to the first switching contact piece 2. This linear movement of the first switching contact ⁇ piece 2 takes place such that the first switching contact ⁇ piece 2 of the second switching contact piece 3.
  • Vorlie ⁇ ing the dimensioning of the centering pin 6 so he ⁇ follows that an electrical contact is not given by a unmit ⁇ telbare connection between the centering pin 6 and the second switching contact piece 2 and only with a larger swing or oscillation of the first switching contact piece 2 a position assurance the same takes place.
  • an arc extending between the first erosion-resistant portion of the first switching contact piece 2 so-as one or more of the socket opening limiting contact fingers.
  • an arc between the first switching contact piece 2 and the centering pin 6 is ignited in particular based on their Abbrandfesten Abschnit ⁇ th. Due to the contact overlap of the first and second switching contact piece 2, 3 (see location of the contacting points 12) on the lateral surface of the first
  • Switching contact piece 2 sets before a galvanic isolation, a compression of electrically insulating fluid by the relative movement of the piston 15 and the first switching contact piece 2 a. To start the compression is still a galvanic contacting of the first and second switching contact piece 2, 3 before. Only the location of the contacting points 12 on the first switching contact piece 2 shifts. As a result, already at the time of a galvanic separation of the first and second switching contact piece 2, 3 a continuous energization of fluid flowing from the flow channel 10 from ⁇ given. With a galvanic separation of the first and second switching contact piece 2, 3, an arc may occur (see FIG.
  • the second switching contact piece 3 approximates the first switching contact piece 2.
  • the switch-on position of the first and second switching contact piece 2, 3 located in the interior of the first switching contact piece 2 recess for receiving a fluid filled with a quantity of fluid, so again turn off under the flow of an optionally -
  • the arc can be done by means of an electrically insulating fluid.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
  • Contacts (AREA)
  • Valve Housings (AREA)

Abstract

L'invention concerne un dispositif de commutation électrique présentant une première pièce de contact de commutation (2) et une seconde pièce de contact de commutation (3). Les deux pièces de contact de commutation (2, 3) peuvent se déplacer l'une par rapport à l'autre. La première pièce de contact de commutation (2) est entourée d'un dispositif de canalisation d'écoulement fluidique (9). Un contour d'enveloppe d'un canal d'écoulement (10) disposé entre le dispositif de canalisation d'écoulement fluidique (9) et la première pièce de contact de commutation (2) est plus grand au niveau de son extrémité tournée vers la seconde pièce de contact de commutation (3) que le contour d'enveloppede la première pièce de contact de commutation (2) au niveau de son extrémité tournée vers la seconde pièce de contact de commutation (3).
EP17816493.5A 2016-12-22 2017-11-23 Dispositif de commutation électrique Pending EP3529820A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016226034.0A DE102016226034A1 (de) 2016-12-22 2016-12-22 Elektrische Schalteinrichtung
PCT/EP2017/080177 WO2018114204A1 (fr) 2016-12-22 2017-11-23 Dispositif de commutation électrique

Publications (1)

Publication Number Publication Date
EP3529820A1 true EP3529820A1 (fr) 2019-08-28

Family

ID=60702608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17816493.5A Pending EP3529820A1 (fr) 2016-12-22 2017-11-23 Dispositif de commutation électrique

Country Status (6)

Country Link
US (1) US10796869B2 (fr)
EP (1) EP3529820A1 (fr)
KR (1) KR102243863B1 (fr)
CN (1) CN110088868B (fr)
DE (1) DE102016226034A1 (fr)
WO (1) WO2018114204A1 (fr)

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DE102018209180A1 (de) * 2018-06-08 2019-12-12 Siemens Aktiengesellschaft Gasisolierte Schaltanlage
DE102020203029A1 (de) 2020-03-10 2021-09-16 Siemens Aktiengesellschaft Elektrische Schaltanordnung
CN113394589B (zh) * 2020-03-12 2023-08-15 河南平芝高压开关有限公司 导电体及使用该导电体的导电连接组件、gis

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CN110088868A (zh) 2019-08-02
KR102243863B1 (ko) 2021-04-23
DE102016226034A1 (de) 2018-06-28
US10796869B2 (en) 2020-10-06
WO2018114204A1 (fr) 2018-06-28
CN110088868B (zh) 2021-09-17
US20190362917A1 (en) 2019-11-28
KR20190093661A (ko) 2019-08-09

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