EP3093866B1 - Elektrische poleinheit für gasisolierte mittelspannungs-schutzschalter - Google Patents

Elektrische poleinheit für gasisolierte mittelspannungs-schutzschalter Download PDF

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Publication number
EP3093866B1
EP3093866B1 EP15167511.3A EP15167511A EP3093866B1 EP 3093866 B1 EP3093866 B1 EP 3093866B1 EP 15167511 A EP15167511 A EP 15167511A EP 3093866 B1 EP3093866 B1 EP 3093866B1
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EP
European Patent Office
Prior art keywords
moving contact
contact assembly
electric pole
compression cylinder
pole unit
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.)
Active
Application number
EP15167511.3A
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English (en)
French (fr)
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EP3093866A1 (de
Inventor
Gabriele Gasparini
Gianluca Cortinovis
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.)
ABB Schweiz AG
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ABB Schweiz AG
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Priority to EP15167511.3A priority Critical patent/EP3093866B1/de
Publication of EP3093866A1 publication Critical patent/EP3093866A1/de
Application granted granted Critical
Publication of EP3093866B1 publication Critical patent/EP3093866B1/de
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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
    • H01H33/901—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 making use of the energy of the arc or an auxiliary arc
    • 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

Definitions

  • the present invention relates to the field of the medium voltage (MV) gas-insulated circuit breakers.
  • MV medium voltage
  • the term "medium voltage” is referred to apparatuses operating at voltages higher than 1 kV AC and 1.5 kV DC up to some tens of kV, e.g. up to 72 kV AC and 100 kV DC.
  • the present invention relates to an electric pole unit for a MV gas-insulated circuit breaker.
  • Gas-insulated circuit breakers are widely used in MV electric power distribution networks.
  • gas-insulated circuit breakers and vacuum circuit breakers are often used in a same switchgear, gas-insulated circuit breakers may be required to have switchgear contacts at the same dielectric distance adopted for vacuum circuit breakers in order to reduce the overall size of the switchgear.
  • gas-insulated circuit breakers may have electric pole units with particularly complex configurations.
  • Electric pole units of this type are typically characterised by a high resistivity of the current path, which may entail the raising of overheating phenomena when high currents flow through the pole unit.
  • Patent documents US 5 977 502 A , US 2013 168357 A1 and DE 10 2010 020979 A1 each describe medium or high voltage gas circuit breakers having moving contact assemblies comprising a main contact and an arcing contact, and a stationary compression cylinder.
  • Patent document US 2009/261071 A1 describes a high voltage gas-blast circuit breaker in which a conductive connection is formed by a contact spring between a stationary conductor element and a separating element of the movable main contact.
  • the aim of the present invention is to provide an electric pole unit for a MV gas-insulated circuit breaker, which allows overcoming the above-mentioned problems.
  • an object of the present invention to provide an electric pole unit, which is particularly suitable for use in switchgears requiring relatively short distances between the switchgears contacts.
  • Another object of the present invention is to provide an electric pole unit, which shows excellent performances in terms of electric conductivity of the current path and in terms of dielectric insulation among the internal components.
  • Another object of the present invention is to provide an electric pole unit, which has a relatively simple structure with a relatively low size.
  • Another object of the present invention is to provide an electric pole unit, which can be industrially manufactured at competitive costs.
  • the present invention provides an electric pole unit for a MV gas-insulated circuit breaker, according to the following claim 1 and related dependent claims.
  • the present invention relates to an electric pole unit 1 for a MV gas-insulated circuit breaker.
  • the pole unit 1 comprises an insulating housing 2 that is advantageously made of electrically insulating material.
  • the housing 2 is advantageously formed by an elongated hollow body having a substantially cylindrical shape with a main longitudinal axis 100 ( figure 1 ).
  • the housing 2 defines an internal volume 3, in which a dielectric gas (as an example SF 6 ) is contained.
  • a dielectric gas as an example SF 6
  • the whole internal volume 3 of the pole unit 1 is filled with the mentioned dielectric gas at a suitable pressure, preferably higher than the atmospheric pressure.
  • the pole unit 1 comprises a first pole terminal 11 and a second pole terminal 12.
  • the pole terminals 11, 12 may be mechanically fixed to the housing 2 by means of flanges.
  • the pole unit 1 comprises first and second bushings 13, 14 that are mechanically coupleable (e.g. by means of connecting screws) with the housing 2 at the first and second pole terminals 11, 12, respectively.
  • the first and second bushings 13, 14 comprise first and second switchgear contacts 15, 16 respectively.
  • the first and second switchgear contacts 15, 16 are electrically coupled with the first and second pole terminals 11, 12, respectively, when the first and second bushings 13, 14 are mechanically coupled with the housing 2.
  • the pole unit 1 comprises an interruption unit 6 positioned within the internal volume 3.
  • the interruption unit 6 comprises a fixed contact assembly 4, which is electrically coupled to the first pole terminal 11 (and consequently to the first switchgear terminal 15).
  • the fixed contact assembly 4 is also mechanically coupled to the first pole terminal 11 and is kept in its operating position by this latter.
  • the fixed contact assembly 4 comprises a fixed contact main portion 42 and a fixed contact arcing portion 41, which are made of conductive material and are electrically coupled one to another.
  • the portions 41, 42 of the fixed contact assembly 4 are also mechanically coupled one to another.
  • the fixed contact main portion 42 comprises a plurality of contact fingers 421 protruding from an annulus shaped contact base 422 (in a direction substantially parallel to the axis 100).
  • the contact base 422 is in proximal position with respect to the first pole terminal 11 and the contact fingers 421 protrudes in a distal direction with respect to the first pole terminal 11.
  • the contact fingers 421 are arranged in such a way to define a substantially cylindrical volume (extending along the axis 100), in which the fixed contact arcing portion 41 is arranged.
  • the contact base 422 is mechanically and electrically connected with the fixed contact arcing portion 41 ( figure 3 ).
  • the fixed contact arcing portion 41 comprises a cylindrically shaped body extending along the axis 100.
  • Such a shaped body has a first constrained end 411, which is mechanically and electrically coupled with the main contact arcing portion 42 (in particular with the contact base 422) and with the first pole terminal 11.
  • said shaped body has a second free-standing end 412, which is positioned within the volume defined by the contact fingers 421 ( figure 3 ).
  • the interruption unit 6 comprises a moving contact assembly 5, which is adapted to be coupled with or separated from the fixed contact assembly 4, during a switching operation of the circuit breaker including the pole unit 1.
  • the moving contact assembly 5 is adapted to move along the axis 100, during a switching operation of the circuit breaker including the pole unit 1.
  • the moving contact assembly 5 comprises a moving contact main portion 52 and a moving contact arcing portion 51, which are made of conductive material and are electrically coupled one to another.
  • the moving contact assembly 5 comprises also a base portion 53.
  • the portions 51, 52, 53 of the moving contact assembly 5 are integral one to another and form a substantially cup-shaped body having a central contact cavity 513 centred with the axis 100.
  • the base portion 53 is formed by a base wall extending along a plane substantially perpendicular to the axis 100.
  • the base wall 53 has an annulus shape centred with the axis 100.
  • the base wall 53 is arranged in a distal position with respect to the fixed contact assembly 4 and comprises first ports 54 for the passage of the dielectric gas.
  • the ports 54 are provided with suitable pressure valves to regulate the flow of dielectric gas.
  • the moving contact assembly 5 comprises an external wall 521 having a tubular shape centred with the axis 100 and extending perpendicularly from the base wall 53 (in a direction substantially parallel to the axis 100) towards the fixed contact assembly 4.
  • the external wall 521 of the moving contact assembly 5 forms the moving contact main portion 52.
  • the external wall 521 is arranged so as to couple with the contact fingers 421 of the fixed contact main portion 42, when the moving contact assembly 5 and the fixed contact assembly 4 are mutually coupled ( figure 1 ).
  • the moving contact assembly 5 comprises an internal wall 511 spaced from the external wall 521.
  • the internal wall 511 has a tubular shape centred with the axis 100 and protrudes perpendicularly from the base wall 53 (in a direction substantially parallel to the axis 100) towards the fixed contact assembly 4.
  • the internal wall 511 of the moving contact assembly 5 forms the moving contact arcing portion 51 of this latter.
  • the internal wall 511 defines the elongated contact cavity 513 centred with the axis 100.
  • the internal wall 511 is arranged so as to couple with the free-standing end 412 of the body of the fixed contact arcing portion 41.
  • the free-standing end 412 is at least partially inserted in the contact cavity 513 and the external surface of the free-standing end 412 is coupled with the internal surface of the contact cavity 513, when the moving contact assembly 5 and the fixed contact assembly 4 are coupled ( figure 1 ).
  • the moving contact assembly 5 comprises a nozzle portion 55, which may be made of insulating material.
  • the nozzle portion 55 is fixed to the moving contact portions 51, 52 (more particularly to the walls 511, 521) perpendicularly to the axis 100 and in a proximal position with respect to the fixed contact assembly 4.
  • the nozzle portion 55 comprises a central hole 551 centred with the axis 100 (and the contact cavity 513).
  • the fixed contact arcing portion 41 (in particular of the free-standing end 412) passes through the hole 551, when the moving contact assembly 5 is coupled with the fixed contact assembly 4.
  • the portions 51, 52, 53, 55 of the moving contact assembly 5 define a blasting chamber 61 of the interruption unit 6, in which the dielectric gas may be subject to overpressures caused by the arc energy, particularly when the moving contact arcing portion 51 moves away from the fixed contact arcing portion 41.
  • the pole unit 1 comprises a moving contact arm 9A, which is mechanically coupled to the moving contact assembly 5 to transmit a linear motion (along the axis 100) to this latter (in a direction towards or away from the fixed contact assembly 4).
  • the contact arm 9A may be made of conductive or insulating material.
  • a proximal end (with respect to the fixed contact assembly 4) of the contact arm 9A is at least partially inserted in the contact cavity 513 to mechanically couple with the base wall 53 and the internal wall 51.
  • the pole unit 1 comprises an operating rod 9B, which is mechanically coupled to the moving contact arm 9A to transmit a linear motion (along the axis 100) to this latter (in a direction towards or away from the fixed contact assembly 4).
  • an operating rod 9B which is mechanically coupled to the moving contact arm 9A to transmit a linear motion (along the axis 100) to this latter (in a direction towards or away from the fixed contact assembly 4).
  • a proximal end (with respect to the fixed contact assembly 4) of the operating rod 9B is mechanically coupled with a distal end of the contact arm 9A.
  • the operating rod 9B may have a curved shaped along a plane perpendicular to the section planes of figures 1-3 (as it is evident from figures 2-3 ).
  • the operating rod 9B is preferably made of insulating material.
  • the pole unit 1 comprises a kinematic chain 9C, which is mechanically coupled to the operating rod 9B.
  • a distal end (with respect to the fixed contact assembly 4) of the operating rod 9B is mechanically coupled with the kinematic chain 9C.
  • the kinematic chain 9C is mechanically coupleable with an actuator (not shown).
  • the kinematic chain 9C is configured to transform a rotary motion transmitted by such an actuator (e.g. an electric motor) in a linear motion transmitted to the operating rod 9B (in a direction towards or away from the fixed contact assembly 4).
  • an actuator e.g. an electric motor
  • the interruption unit 6 comprises a compression cylinder 7, which defines a gas compression chamber 62 of the interruption unit 6 ( figure 2 ).
  • the compression cylinder 7 is advantageously fixed to the housing 2.
  • the moving contact assembly 5 is operatively coupled with the compression cylinder 7 so as to move along the compression chamber 62 during a switching operation of the circuit breaker.
  • the moving contact assembly 5 is at least partially inserted in the compression cylinder 7 and moves within the compression chamber 61 in a direction parallel to the axis 100, towards or away from the fixed contact assembly 4.
  • the moving contact assembly 5 is operatively coupled with the compression cylinder 7 so as to operate as a piston compressing the dielectric gas contained in the compression chamber 62, when moving away from the fixed contact assembly 4.
  • the compression cylinder 7 is open towards the fixed contact assembly 4 so as to allow the coupling between the moving contact assembly 5 and the fixed contact assembly 4.
  • the compression cylinder 7 comprises a base wall portion 72 extending along a plane substantially perpendicular to the axis 100.
  • the base wall portion 72 is arranged in a distal position with respect to the fixed contact assembly 4 and comprises second ports 73 for the passage of the dielectric gas.
  • the second ports 73 are advantageously provided with suitable pressure valves to regulate the flow of dielectric gas.
  • the base wall portion 72 may be of conductive or insulating material.
  • the compression cylinder 7 comprises a lateral wall portion 71.
  • the lateral wall portion 71 has a tubular shape centred with the axis 100 and extends perpendicularly to the base wall portion 72 (in a direction substantially parallel to the axis 100) towards the fixed contact assembly 4.
  • the compression cylinder 7 is at least partially made of conductive material and is electrically coupled to the second pole terminal 12.
  • the lateral wall portion 71 is at least partially made of conductive material and is electrically coupled to the second pole terminal 12.
  • the lateral wall portion 71 is made of conductive material (e.g. copper) and is mechanically and electrically coupled with the second pole terminal 12.
  • the electric pole unit 1 comprises sliding contact means 8, which electrically couple the moving contact assembly 5 and the compression cylinder 7.
  • the sliding contact means 8 allows obtaining an electric current path 200 passing through the moving contact assembly 5, the compression cylinder 7 and the second pole terminal 12.
  • the sliding contact means 8 electrically couple the moving contact assembly 5 and the lateral wall potion 71 (made of conductive material) of the compression cylinder 7.
  • the electric current path 200 passes through the moving contact assembly 5, the lateral wall portion 71 and the second pole terminal 12.
  • the sliding contact means 8 are mechanically coupled with the moving contact assembly 5, more particularly with the moving contact main portion 52.
  • the sliding contact means 8 comprise at least a sliding contact element mechanically coupled with the moving contact main portion 52, more particularly with the external wall 521.
  • the sliding contact element 8 is mechanically coupled with the external surface 522 of the external wall 521, advantageously at a distal position with respect to the fixed contact assembly 4, e.g. in proximity of the base wall 53.
  • the sliding contact element 8 is designed so as to be always in contact with the internal surface 712 of the lateral wall portion 71 of the compression cylinder 7.
  • the sliding contact element 8 comprises a spring made of conductive material (e.g. copper).
  • the spring 8 is accommodated (preferably in a fixed manner) in a groove 522A obtained at the external surface 522 of the moving contact main portion 52 (in particular of the external wall 521).
  • the sliding contact means 8 are integral part of the moving contact assembly 5, more particularly of the moving contact main portion 52.
  • the sliding contact means 8 are integral part of the external wall 521.
  • the sliding contact means 8 preferably comprise one or more external protrusions of the moving contact main portion 52, more particularly of the external wall 521.
  • the external protrusions 8 are obtained at the external surface 522 of the external wall 521, advantageously at a distal position with respect to the fixed contact assembly 4, e.g. in proximity of the base wall 53.
  • the external protrusions 8 are designed so as to be always in contact with the internal surface 712 of the lateral wall portion 71 of the compression cylinder 7.
  • the sliding contact means 8 are integral part of the compression cylinder 7.
  • the sliding contact means 8 are integral part of the lateral wall portion 71.
  • the sliding contact means 8 preferably comprise one or more external protrusions of the compression cylinder 7, more particularly of the lateral wall portion 71.
  • the external protrusions 8 are obtained at the internal surface 712 of the lateral wall portion 71, advantageously at a distal position with respect to the fixed contact assembly 4, e.g. in proximity of the base wall portion 72.
  • the external protrusions 8 are designed so as to be always in contact with the external surface 522 of the external wall 521 of the moving contact main portion 52.
  • the sliding contact means 8 are mechanically coupled with the compression cylinder 7, more particularly with the moving contact main portion 52.
  • the sliding contact means 8 preferably comprise at least a sliding contact element mechanically coupled with the moving contact main portion 52, more particularly with the lateral wall portion 71.
  • the sliding contact element 8 is mechanically coupled with the internal surface 712 of the lateral wall portion 71, advantageously at a distal position with respect to the fixed contact assembly 4, e.g. in proximity of the base wall portion 72.
  • the sliding contact element 8 is designed so as to be always in contact with the external surface 522 of the external wall 521 of the moving contact main portion 52.
  • the sliding contact element 8 may be, for example, a conductive ring accommodated (preferably in a fixed manner) in a seat 712A obtained at the internal surface 712 of the lateral wall portion 71 of the compression cylinder 7.
  • circuit breaker including the pole unit 1 is supposed to be in a closed condition.
  • the corresponding operative condition of the electric pole unit 1 is represented in figure 1 .
  • the moving contact assembly 5 is operatively coupled with the fixed contact assembly of the electric pole unit 1.
  • the moving contact arcing portion 51 and the moving contact main portion 52 are operatively coupled with the fixed contact arcing portion 41 and the fixed contact main portion 42, respectively.
  • a current path is present between the pole terminals 11, 12.
  • Such a current path passes through the portions 41, 42 of fixed contact assembly 4, the portions 51, 52 of moving contact assembly 5, the sliding contact means 8 and the compression cylinder 7 (in particular the lateral wall portion 71).
  • the moving contact assembly 5 is moved away from the fixed contact assembly 4.
  • the movement of the moving contact assembly 5 causes a compression of the dielectric gas within the compression chamber 62.
  • the compressed dielectric gas flows through the first ports 54 to the blast chamber 61
  • the electric pole unit 1 reaches the intermediate operative condition represented in figure 2 .
  • Such a current path passes through the fixed contact arcing portion 41, the moving contact arcing portion 51, the sliding contact means 8 and the compression cylinder 7 (in particular the lateral wall portion 71).
  • the electric pole 1 executes a current breaking operation of the puffer type, in which the compressed dielectric gas is driven towards the electric contacts to obtain arc quenching.
  • the electric pole 1 executes a current breaking operation of the self-blast type, in which the the arc energy is used to produce high pressure waves in the dielectric gas within the blast chamber 61.
  • Such pressure waves in the dielectric gas ensure the obtaining of arc quenching.
  • the circuit breaker including the electric pole unit 1 is now supposed to be in an open condition.
  • the moving contact assembly 5 is moved towards the fixed contact assembly 4.
  • the electric pole unit 1 reaches the intermediate operative condition represented in figure 2 .
  • the moving contact assembly 5 are partially coupled with the fixed contact assembly of the electric pole unit 1.
  • the moving contact arcing portion 51 and the moving contact main portion 52 are still separated whereas the fixed contact arcing portion 41 and the fixed contact main portion 42 are coupled one to another.
  • a current path is established between the pole terminals 11, 12.
  • Such a current path passes through the fixed contact arcing portion 41, the moving contact arcing portion 51, the sliding contact means 8 and the compression cylinder 7 (in particular the lateral wall portion 71).
  • the moving contact assembly 5 is fully coupled with the fixed contact assembly of the electric pole unit 1.
  • the moving contact arcing portion 51 and the moving contact main portion 52 are operatively coupled with the fixed contact arcing portion 41 and the fixed contact main portion 42, respectively.
  • a current path is present between the pole terminals 11, 12.
  • Such a current path passes through the portions 41, 42 of fixed contact assembly 4, the portions 51, 52 of moving contact assembly 5, the sliding contact means 8 and the compression cylinder 7 (in particular the lateral wall portion 71).
  • the sliding contact means 8 ensure an electric coupling between the moving contact assembly 5 and the compression cylinder 7 (and consequently the second pole terminal 12) at any position of the moving contact assembly 5 relative to the fixed contact assembly 4.
  • the electric pole unit 1, according to the invention may be subject to several variants falling within the scope of the invention.
  • the housing 2, the fixed contact assembly 4, the moving contact assembly 5, the bushings 13-14, the contact arm 9A, the operating rod 9B and/or the kinematic chain 9C may be arranged according to other solutions of known type.
  • the electric pole unit 1, according to the invention, allows achieving the intended aims and objects.
  • the sliding contact means 8 allow obtaining an improved current path between the pole terminals 11, 12.
  • the electric pole unit 1 therefore offers excellent performances in terms of electric conductivity of the current path and in terms of dielectric insulation among the components.
  • the electric pole unit 1 is characterised by a compact and relatively simple structure, which makes it particularly suitable for use in switchgears requiring relatively short distances between the switchgears contacts.
  • the electric pole unit 1 has proven to be easier and less expensive to assembly at industrial level and install on the field with respect to traditional solutions of the state of the art.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (5)

  1. Elektrische Poleinheit (1) für einen gasisolierten Mittelspannungs-Leistungsschalter, umfassend:
    - ein isolierendes Gehäuse (2), das ein Innenvolumen (3) definiert, in dem ein dielektrisches Gas enthalten ist;
    - einen ersten Polanschluss (11) und einen zweiten Polanschluss (12);
    - eine Unterbrechungseinheit (6), die im Innenvolumen der elektrischen Poleinheit positioniert ist, wobei die Unterbrechungseinheit Folgendes umfasst:
    - eine Festkontaktanordnung (4), die mit dem ersten Polanschluss (11) elektrisch gekoppelt ist;
    - eine Bewegkontaktanordnung (5), die dazu eingerichtet ist, während eines Schaltvorgangs des Leistungsschalters mit der Festkontaktanordnung gekoppelt oder von dieser getrennt zu werden, wobei die Bewegkontaktanordnung einen durch eine Außenwand (521) der Bewegkontaktanordnung ausgebildeten Bewegkontakt-Hauptteil (52) und einen Bewegkontakt-Lichtbogenteil (51), die aus leitfähigem Material gefertigt und miteinander elektrisch gekoppelt sind, einen Basisteil (53) und einen Düsenteil (55) umfasst, die eine Blaskammer (61) definieren;
    - einen Kompressionszylinder (7), der zumindest teilweise eine Gaskompressionskammer (62) der Unterbrechungseinheit definiert, wobei die Bewegkontaktanordnung mit dem Kompressionszylinder derart wirkgekoppelt ist, sich während eines Schaltvorgangs des Leistungsschalters entlang der Kompressionskammer zu bewegen, wobei der Kompressionszylinder (7) zumindest teilweise aus leitfähigem Material gefertigt und mit dem zweiten Polanschluss (12) elektrisch gekoppelt ist,
    wobei die elektrische Poleinheit ein Gleitkontaktmittel (8) umfasst, das die Bewegkontaktanordnung (5) und den Kompressionszylinder (7) elektrisch koppelt, dadurch gekennzeichnet, dass
    das Gleitkontaktmittel (8) eine mit dem Bewegkontakt-Hauptteil (52) mechanisch gekoppelte leitfähige Feder umfasst,
    die leitfähige Feder (8) feststehend in einer an der Außenfläche (522) der Außenwand (521) des Bewegkontakt-Hauptteils erhaltenen Nut (522A) aufgenommen ist.
  2. Elektrische Poleinheit nach Anspruch 1, dadurch gekennzeichnet, dass der Kompressionszylinder einen Seitenwandteil (71) umfasst, der aus leitfähigem Material gefertigt und mit dem zweiten Polanschluss (12) elektrisch gekoppelt ist, wobei das Gleitkontaktmittel (8) die Bewegkontaktanordnung (5) und den Seitenwandteil des Kompressionszylinders elektrisch koppeln.
  3. Elektrische Poleinheit nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die leitfähige Feder (8) mit der Außenfläche (522) der Außenwand (521) des Bewegkontakt-Hauptteils (52) nahe dem Basisteil (53) der Bewegkontaktanordnung mechanisch gekoppelt ist.
  4. Gasisolierter Mittelspannungs-Leistungsschalter, dadurch gekennzeichnet, dass er eine oder mehrere Poleinheiten (1) nach einem oder mehreren der vorhergehenden Ansprüche umfasst.
  5. Mittelspannungs-Schaltanlage, dadurch gekennzeichnet, dass sie einen gasisolierten Mittelspannungs-Leistungsschalter nach Anspruch 4 umfasst.
EP15167511.3A 2015-05-13 2015-05-13 Elektrische poleinheit für gasisolierte mittelspannungs-schutzschalter Active EP3093866B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15167511.3A EP3093866B1 (de) 2015-05-13 2015-05-13 Elektrische poleinheit für gasisolierte mittelspannungs-schutzschalter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15167511.3A EP3093866B1 (de) 2015-05-13 2015-05-13 Elektrische poleinheit für gasisolierte mittelspannungs-schutzschalter

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EP3093866A1 EP3093866A1 (de) 2016-11-16
EP3093866B1 true EP3093866B1 (de) 2020-04-22

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CN107887832B (zh) * 2017-03-27 2024-06-18 江苏明及电气股份有限公司 一种直推式金属封闭开关柜及弹性卡接头
EP3893261B1 (de) * 2020-04-06 2024-01-24 ABB Schweiz AG Polkontaktarm für eine elektrische poleinheit

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Publication number Priority date Publication date Assignee Title
JP4174094B2 (ja) * 1998-01-29 2008-10-29 株式会社東芝 ガス遮断器
EP1939910A1 (de) * 2006-12-27 2008-07-02 ABB Technology AG Druckgasschalter mit einer radialen Durchströmöffnung
DE102010020979A1 (de) * 2010-05-12 2011-11-17 Siemens Aktiengesellschaft Druckgas-Leistungsschalter
JP5516568B2 (ja) * 2011-12-28 2014-06-11 株式会社日立製作所 パッファ形ガス遮断器

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