EP2168131A2 - Montage comprenant un interrupteur coupe-charge et un interrupteur de mise à la terre - Google Patents

Montage comprenant un interrupteur coupe-charge et un interrupteur de mise à la terre

Info

Publication number
EP2168131A2
EP2168131A2 EP08761130A EP08761130A EP2168131A2 EP 2168131 A2 EP2168131 A2 EP 2168131A2 EP 08761130 A EP08761130 A EP 08761130A EP 08761130 A EP08761130 A EP 08761130A EP 2168131 A2 EP2168131 A2 EP 2168131A2
Authority
EP
European Patent Office
Prior art keywords
switch
shaft
earthing switch
arrangement according
grounding
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.)
Withdrawn
Application number
EP08761130A
Other languages
German (de)
English (en)
Inventor
Rolf Dirks
Frank HÖRTZ
Vedad Karic
Peter Schmitt
Jörg Teichmann
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
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 EP2168131A2 publication Critical patent/EP2168131A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/026—Movable parts and contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts

Definitions

  • the invention relates to an arrangement with a load-break switch.
  • Switch disconnectors as such are, for example, from the publication "Circuit Breaker Permanent Installation Type NXPLUS C up to 24 kV, gas-insulated; Medium-voltage systems; Catalog HA 35.41, 2006 "from Siemens AG, in particular from page 24.
  • Such switch disconnectors are used, for example, in gas-insulated small switchgear installations (so-called RMUs, ring main units)
  • RMUs gas-insulated small switchgear installations
  • transformers are connected to energy supply networks
  • the invention has for its object to admit a simple and inexpensive arrangement of the type mentioned ⁇ , with which also the second terminal of the fuse can be grounded.
  • This object is achieved by a Anord ⁇ tion with a load-break switch and a grounding switch, in which - the load-break switch is formed in one of its switching positions for grounding a first terminal of a fuse,
  • the shaft of the earthing switch and at least one of the earthing switch moving contacts are bent from a sheet metal
  • the shaft of the He ⁇ dung switch and the at least one grounding switch Move ⁇ contact of a (single) sheet metal are curved.
  • the wave of the earthing switch can be produced very inexpensively and in the bending process (bending process) is prepared simultaneously with the shaft and the at least one grounding ⁇ switch moving contact.
  • the rounding on the earthing switch moving contact is produced by a simple bending over of the sheet metal of the moving contact. This makes this rounding very fast, easy and inexpensive to produce.
  • the arrangement may be such that grounding switch means arranged at both ends of the shaft of the earthing switch Moving contacts are bent from the one sheet. It is particularly advantageous that the two earthing switch Be ⁇ wegterne, which are arranged at the two ends of the shaft of the earthing ⁇ switch, are also bent from the one sheet metal. Therefore, these two earthing switch moving ⁇ contacts in the bending process (bending process) for the production of the wave can be made simultaneously. Also made light ⁇ a very simple and cost-effective production.
  • the arrangement may be configured such that a grounding switch moving contact consisting of a rolling profile is arranged on a middle part of the shaft of the grounding switch.
  • a grounding switch moving contact consisting of a rolling profile
  • the means arranged on the ⁇ part of the shaft grounding switch movable contact consists of a rolled profile.
  • Such rolling profile has her ⁇ position due to no sharp corners and edges, an elaborate Nachbarbeitung the grounding switch moving contact is not necessary. Additionally, such rolling profiles ⁇ kos-effectively produced or available. This has the consequence that the described arrangement can be easily and inexpensively manufactured with a few manufacturing steps.
  • the arrangement may be designed so that the existing from the roll profile grounding switch moving contact with the middle part of the shaft of the earthing switch ver ⁇ connected, in particular welded, is cohesively. This is a particularly simple method for connecting the ground contact switch moving contact made of the rolled section to the central part of the shaft.
  • the arrangement may be configured such that the grounding switch moving contact made of the rolled section has a rolled curve at a contact point where it contacts a grounding switch fixed contact when closing.
  • the rounding is rolled and therefore already in the manufacturing process (rolling) of the roll profile was evidence he ⁇ .
  • no additional step is necessary to attach to the earthing switch moving contact the rounding. This also leads to an inexpensive and simple production of the described arrangement.
  • the arrangement may be configured such that the shaft of the earthing switch is rotatably mounted in a mounting bracket, which supports the earthing switch on the load-break switch.
  • the mounting bracket thus serves to hold the earthing switch to the switch-disconnector and at the same time to support the shaft.
  • the arrangement can be constructed such that the shaft of the earthing switch is mounted in the mounting bracket by means of expanding rivets.
  • the expansion rivets advantageously allow a cost-effective mounting of the shaft in the mounting bracket.
  • the arrangement can also be constructed so that one end of the shaft of the earthing switch is electrically conductively connected to the mounting bracket by means of a combined with a contact ⁇ disc (ie, provided with a contact disc) expansion rivet. It is particularly advantageous that an electrical connection between the shaft of the earthing ⁇ switch and the mounting bracket can be made very easily and inexpensively by means of the contact disc. So no separate ground wire or similar notwen ⁇ is particularly dig.
  • the arrangement can be designed so that a rod is mounted eccentrically and navbeweg ⁇ Lich on the shaft of the earthing switch, which carries a rotational movement of the shaft of the load-break switch on the shaft of the earthing switch ⁇ .
  • the arrangement can be designed so that a pin is arranged on one of the earthing switch-moving contacts, on which the rod is mounted rotatably.
  • the arrangement can be constructed so that the pin is ex ⁇ centrally ⁇ assigns to the rotational axis of the shaft of the earthing switch.
  • the arrangement according to the invention is particularly advantageous that by means of a simple rod, the rotational movement of the shaft of the load-break switch can be transmitted to the shaft of the earthing switch. This is a particularly simple con ⁇ constructive tion, which is also reliable and low maintenance.
  • the arrangement may be configured such that the rod has bearing means for rotatably supporting at its ends, which are arranged offset by 90 degrees to each other.
  • the rotational movement of the shaft of the load-break switch is transferred to a 90 ° offset shaft of the earthing switch in an advantageous manner. This is (compared with ⁇ example with a gear transmission) a very hereby güns ⁇ term and simple solution.
  • the arrangement may be designed so that it forms a fully assembled pre-assembly, which is intended for installation in a gas tank of a gas-insulated switchgear.
  • the arrangement can also be designed so that the pre-assembly is adjusted and / or checked. It is particularly advantageous that the completely sixteenge ⁇ built, adjusted and / or tested pre-assembly can be installed in one piece in the gas tank of the gas-insulated switchgear. Since in such a gas tank usually lent very tight conditions prevail, this allows a quick and easy and thus cost-effective installation.
  • the arrangement can also be configured such that the earthing switch moving contacts are connected to ground potential.
  • Earthing switch moving contacts with ground potential can advantageously be realized very easily.
  • the earthing switch moving contacts with a Erdpoten ⁇ tial having frame or mounting bracket of the earthing switch can be electrically connected.
  • the arrangement may also be configured so that grounding switch ⁇ fixed contacts, which are associated with the earth switch-BewegCounten, comparable to the second terminal of the fuse are connected.
  • grounding switch ⁇ fixed contacts which are associated with the earth switch-BewegCounten, comparable to the second terminal of the fuse are connected.
  • Figure 1 is a circuit diagram of an arrangement with a load break switch and a grounding switch, in
  • Figure 2 is a perspective view of an arrangement with a load-break switch and a coupled
  • Figure 3 is a perspective view of the grounding scarf ⁇ ters with coupling elements, in
  • FIG. 4 shows the earthing switch with coupling elements in partial exploded view
  • FIG. 1 shows a three-phase power supply conductor 1 of a medium-voltage power supply network, which is connected to a three-position load disconnector 2.
  • the switch-disconnector 2 is connected to a fuse 4 (only shown in a single phase in FIG. 1, but in reality also three- phased ), which has a first terminal 6 and a second terminal 7.
  • the switch-disconnector 2 In a first switching position of the switch-disconnector (in which a moving contact 3 of the switch-disconnector is vertical), the switch-disconnector 2 connects the power-supply conductor 1 to the first terminal 6 of the fuse 4 comprising switch-disconnector position Darge in Figure 1 ⁇ presented) separates the load break switch 2, the power supply conductor 1 from the first backup check circuit 6. in a third switching position of the circuit breaker 2 (in which the moving contact 3 of the switch disconnector is horizontal) connecting the circuit breaker to first terminal 6 of the fuse 4 with ground potential, ie the load disconnector grounds the first terminal 6 of the fuse 4.
  • the second terminal 7 of the fuse 4 is connected to a (not shown in the figure 1) transformer.
  • the second terminal 7 of the fuse 4 is connected to a grounding switch 9 which is capable of connecting the second fuse terminal 7 to ground potential, ie grounding the second terminal 7 of the fuse 4.
  • grounding switch 9 By means of a dotted line is indicated that the switch-disconnector 2 and the earthing switch 9 are actuated simultaneously, whereby in the third switching position of the circuit breaker 2, both the first terminal 6 and the second terminal 7 of the fuse 4 is connected to ground potential.
  • the earthing switch is shown only symbolically in the diagram of Figure 1. In the case of the described tion form the moving contacts of the earthing switch are connected to ground potential; the fixed contacts of the earthing switch are connected to the second terminal 7 of the fuse 4.
  • FIG. 2 shows an arrangement with a three-position load-disconnector 201 and a grounding switch 202 coupled thereto.
  • the three-position switch-disconnector 201 is shown by dashed lines.
  • the Er ⁇ tion switch 202 and serving to couple the earthing switch with the switch-disconnector elements are shown by solid lines.
  • the three-position switch-disconnector 201 has a shaft 203 to which three moving contacts 205 are attached. Each of the three load break switch moving contacts 205 has a double switch blade. (The moving contacts 205 are also referred to as the main blade.) Furthermore, the load-break switch 201 has fixed-load-disconnector fixed contacts 207 and stationary switch-disconnector ground contacts 209. The fixed contacts 207 serve to form a useful current path from the power supply conductor 1 to the transformer, during which the switch-disconnector grounding contacts 209 serve to ground the first terminal 6 of the fuse 4. (The circuit breaker grounding contacts 209 are also referred to as main earthing contacts.)
  • the shaft 203 is connected to one (in the figure 2 does not dargestell ⁇ th) drive, which rotates the shaft 203 about its axis of rotation.
  • the moving contacts 205 are rotated with the shaft and can be brought into the three suitsstel ⁇ lungs: in the first switching position, the moving contacts in the figure 2 are perpendicular and form an electrical connection, ie a current path to the fixed contacts 207th
  • the motions contacts obliquely (as shown in the figure) and we ⁇ der an electrical connection to the fixed contacts 207 even to the switch disconnector ground contacts 209 on.
  • the moving contacts 205 In the third switching position of the load-break switch 201, the moving contacts 205 are horizontal and make an electrical contact to the switch-disconnector ground contacts 209 ago.
  • the switch-disconnector 201 has a locking device, not shown, which serves to mechanically lock the switch-disconnector (in particular in the third switching position), ie to prevent a (eg unwanted) switching operation of the switch-disconnector.
  • a locking device has, for example, a pawl, which engages in the locked state in a recess and then prevents rotation of the shaft 203 of the load disconnector ⁇ switch.
  • Such a locking device is usually installed for security in load switch disconnector ter to prevent a in the third switching position (ground position) ter unintentionally switched befindaji switch disconnectors in one of the other switching positions.
  • the rod 215 is rotatably and eccentrically connected at its other end with a shaft 217 of the earthing switch 202 ⁇ connected.
  • the shaft of the earthing switch 202 is thus connected to the shaft 203 of the circuit breaker 201 or with these coupled.
  • these shafts are mechanically coupled to one another in such a way that upon rotation of the shaft 203 of the load- disconnecting switch Also, the shaft 217 of the earthing switch 202 is rotated.
  • the rod transmits a rotational movement of the shaft 203 of the circuit breaker 201 to the shaft 217 of the earthing switch.
  • the shaft 217 of the earthing switch 202 has three grounding ⁇ switch-moving contacts 221, which are rotated during rotation of the shaft 217.
  • the earthing switch moving contacts 221 are each formed as a single-layer switching blade, which make in a closed state of the grounding switch 202 make electrical contact with earthing switch fixed contacts 223.
  • the earthing switch fixed contacts 223 are designed as self-resilient fixed contacts.
  • the load break switch 201 is coupled to the earthing switch 202 by means of the rod 215, that in the first switching position of the circuit breaker (in the Bewegkon ⁇ contacts 205 of the circuit breaker 201 are perpendicular to and contact with the fixed contacts 207 close) and the second (in the 2), the earthing switch moving contacts 221 do not make electrical contact with the earthing switch fixed contacts 223, ie the earthing switch 202 is open.
  • the switch-disconnector 201 is in the illustrated second switch position and the shaft 203 is further rotated clockwise (as seen from the left), the switch-disconnector 201 is transferred to the third switch position (at which the movable contacts 205 are horizontal).
  • the eccentric point formed by the pin 213 moves the eccentric disc 211 in a circular path in a clockwise direction and moves the rod 215 in the direction of the Erdungsschalter- fixed contacts 223.
  • the shaft 217 of the grounding ⁇ switch 202 (viewed from the front) counterclockwise around its axis rotated and the moving contacts 221 drive in the self-energizing earthing switch fixed contacts 223, whereby the electrical contact between the Erdungsschalter- moving contacts and the earthing switch fixed contacts 223 is closed.
  • the earthing switch 202 is firmly bolted to a frame 225 (chassis) of the circuit breaker 201. Characterized it is ⁇ sufficient that both the frame of the circuit breaker 201 and the grounding switch 202 are at the same electrical polyvinyl potential.
  • the frame of the circuit breaker 201 is ge ⁇ grounded, consequently, the earthing switch 202 is at ground potential.
  • the switch disconnectors grounding contacts 209 and the wise He ⁇ dung switch-moving contacts 221 therefore (regardless of the switching position of the circuit breaker and the earthing switch) to always ground potential, ie they are always geer ⁇ det.
  • the moving contacts 205 of the circuit breaker 201 are - as shown in Figure 1 - connected to the first terminal 6 of the fuse 4, while the earthing switch fixed contacts 223 connected to the second terminal 7 of the fuse 4. they are.
  • the earthing switch fixed contacts 223 may be arranged at ⁇ example, to a fuse carrier, which is located under the switch-disconnector 201 and which carries the fuses.
  • the earthing switch 202 is disposed on the underside of the circuit breaker 201; the support bracket 227 supports the He ⁇ dung switch 202 is produced at the circuit breaker 201.
  • a self-contained assembly (a fully assembled sub-assembly) consisting of load switch disconnector 201, grounding switches 202 and coupling elements.
  • This preassembly group can be adjusted, tested and then installed in a gas tank of a gas-insulated switchgear, in which by means of SF 6 -GaS gas insulation takes place.
  • the earthing switch 202 needs to be designed with respect to the short-circuit resistance only for about 10% to 15% of the network short-circuit power, since only the regenerative power of the (not shown in the figure) transformer from the low-voltage network occurs at this earthing switch. This regenerative power is limited by the transformer impedance.
  • the load-break switch 201 must be designed for maximum network short-circuit power. This is taken into account in the embodiment in that a solid load break switch moving contact is used in the form of a double switch blade 205, while for the grounding ⁇ switch moving contact 221 a single-ply switch blade is made of relatively thin sheet steel.
  • the earthing switch 202, the rod 215, and the eccentric disc 211 rotatably and eccentrically connected to the rod 215 are shown in a perspective individual view.
  • the eccentric 211 (drive pulley) is positively connected to the shaft 203; in the version
  • the eccentric disk 211 is bolted to the shaft 203 of the circuit breaker 201 using four holes made in it.
  • the shaft 217 of the earthing switch is rotatably mounted.
  • the expansion rivet 403 is used exclusively for mechanical rotatable mounting of the shaft 217, while the expansion rivet 405 in cooperation with a sleeve 407, a contact disc 409 and a disc 411th an electrical connection between the shaft 217 and the mounting bracket 227 made.
  • One half of the sleeve 407 is in a bore of the support bracket 227 and the other half in a bore of the shaft 217 arranged net. The sleeve 407 ensures a smooth mounting of the shaft 217 in the mounting bracket 227.
  • the contact disk 409 is a corrugated metal disk (eg bronze disk) which is pressed against the mounting bracket and thereby ensures the electrical contact between the shaft 217 and the mounting bracket 227 ,
  • the combination of the expanding rivet 405 with the contact ⁇ disc 409 allows a cost-effective implementation of the electrical connection between the shaft 217 and the support bracket 227th
  • the shaft 217 of the earthing switch 202 is made of folded sheet steel. At the two ends of the shaft 217, a moving contact 221 is formed in each case.
  • the arranged at the two ends of the shaft 217 of the earthing switch grounding switch moving contacts 221 and the shaft 217 of the earthing switch exist So from a single piece of sheet metal, which was brought by means of a Kant ⁇ method in the illustrated form.
  • the starting material in the form of a sufficiently large punched sheet metal piece is bent in such a way that the shaft 217 is formed with the moving contacts 221 arranged at the two ends of the shaft 217.
  • the shaft 217 and the moving contacts 221 arranged at the two ends of the shaft 217 are integrally formed, and are formed or bent from a single sheet.
  • the outer moving contacts 221 (the moving contacts 221, also called outer phases, arranged at the two ends of the shaft 217) of the grounding switch 202 each have a fold over 413.
  • These refolding 413 is configured such that at a point of contact of the grounding switch moving contact, at the grounding switch moving contact 221 contacts the ground scarf ⁇ ter-fixed contact upon closing, the sheet is bent under From ⁇ formation of a rounding.
  • These refolding 413 is thus disposed at the position at which the moving contact occurs 221 to the grounding switch fixed contacts 223 electrically in contact or on which the moving contact 221 in the self- ⁇ resiliently executed earthing switch fixed contacts 223 ⁇ a running.
  • a middle moving contact 221 of the earthing switch 202 (also called middle phase) is arranged at a central part between the En ⁇ the shaft of the earthing switch.
  • the middle moving contact 221 is integrally connected to the middle part of the shaft of the Er ⁇ circuit breaker, inrangsbei ⁇ game he is welded to the shaft.
  • This earthing switch ter-moving contact 221 consists of a rolled section, which also has a rounding on the fixed contacts side facing. The rounding at the touch ⁇ spot, where the average moving contact 221 touches an earthing switch fixed contact during closing. By Run ⁇ tion a safe shrinkage in the middle grounding switch fixed contact 223 is ensured even for the middle earthing switch moving contact 221.
  • a pin 416 which cooperates with the rod 215.
  • the rod 215 is eccentrically and rotatably connected to the shaft 217.
  • the rod is rotatably mounted on the pin.
  • the rod 215 is made of flat material, wherein the ends of the rod are rotated against each other by 90 °.
  • the rod storage means fasteners for navbe ⁇ movable and eccentric bearings of the rod are available with which the rod is mounted both on the shaft 217 of the earthing switch and on the shaft 203 of the circuit breaker.
  • the storage means are therefore arranged offset by 90 ° to each other.
  • this position ⁇ agents are designed in the form of holes 418 which cooperate with the pin 416 of the shaft of the earthing switch or with the disposed on the eccentric pin 211 213th
  • the eccentric disc 211 is connected to the shaft 203 (eg screwed), of the shaft 203, only a part ⁇ piece in the region of one of the moving contacts 205 is shown.
  • FIG 5 is a side view of the grounding switch 202, the rod 215 and coupled by means of the pin 213 Eccentric disc 211 shown.
  • one of the fixed contacts 223 of the earthing switch 202 is provided ⁇ .
  • the circuit breaker 201 is in the first switching position, then there is the moving contact 221 of the grounding switch 202 at the position 501 indicated by the angle "A 68 °.” In this position 501, the moving contact 221 has a minimum distance of 52 mm from the fixed contact 223.
  • the moving contact 221 of the earthing switch 202 is in the position 502 indicated by the angle "Off 59 °.” In this position 501, the moving contact 221 has a minimum distance of 40 mm from the fixed contact 223.
  • the wave of the earthing switch and at least one of He ⁇ dung switch moving contacts are made of a single sheet ge ⁇ arc and thus made in one piece.
  • the sheet is bent to form a rounding.
  • the shaft with the end arranged Erdungsschalter-BewegCounten can be very simple and inexpensive to produce in a single manufacturing process by bending a single sheet and still allows a reliable grounding of the second terminal of the hedging ⁇ tion.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

L'invention concerne un montage comprenant un interrupteur coupe-charge (201) et un interrupteur de mise à la terre (202). Dans ce montage, l'interrupteur coupe-charge est conçu pour relier à la terre une première borne (6) d'un fusible (4) dans une de ses positions de commutation. Un arbre (203) de l'interrupteur coupe-charge (201) présentant des contacts mobiles (205) est couplé mécaniquement à un arbre (217) de l'interrupteur de mise à la terre (202) présentant des contacts mobiles d'interrupteur de mise à la terre (221) de telle sorte que, dans ladite position de commutation de l'interrupteur coupe-charge (201), l'interrupteur de mise à la terre (202) soit fermé pour relier à la terre une seconde borne (7) du fusible (4). L'arbre (217) de l'interrupteur de mise à la terre et au moins un des contacts mobiles d'interrupteur de mise à la terre (221) sont cintrés dans une tôle, cette tôle étant cintrée de façon à former un arrondi au niveau d'un point de contact du contact mobile d'interrupteur de mise à la terre au niveau duquel ledit contact mobile d'interrupteur de mise à la terre (221) est en contact avec un contact fixe d'interrupteur de mise à la terre lors de la fermeture.
EP08761130A 2007-07-17 2008-06-18 Montage comprenant un interrupteur coupe-charge et un interrupteur de mise à la terre Withdrawn EP2168131A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710033704 DE102007033704B4 (de) 2007-07-17 2007-07-17 Anordnung mit einem Lasttrennschalter und einem Erdungsschalter
PCT/EP2008/057650 WO2009010359A2 (fr) 2007-07-17 2008-06-18 Montage comprenant un interrupteur coupe-charge et un interrupteur de mise à la terre

Publications (1)

Publication Number Publication Date
EP2168131A2 true EP2168131A2 (fr) 2010-03-31

Family

ID=40085516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08761130A Withdrawn EP2168131A2 (fr) 2007-07-17 2008-06-18 Montage comprenant un interrupteur coupe-charge et un interrupteur de mise à la terre

Country Status (3)

Country Link
EP (1) EP2168131A2 (fr)
DE (1) DE102007033704B4 (fr)
WO (1) WO2009010359A2 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2022226693A1 (fr) * 2021-04-25 2022-11-03 Abb Schweiz Ag Interrupteur de mise à la terre pour appareillage de commutation et appareillage de commutation associé

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US8748760B2 (en) 2012-06-19 2014-06-10 Rockwell Automation Technologies, Inc. Linear actuating earthing switch
CN103474284B (zh) * 2013-09-24 2015-07-22 东盟电气集团浙江开关有限公司 一种三工位双接地负荷开关
CN104867776A (zh) * 2014-02-25 2015-08-26 杨顺杰 熔断器式负荷隔离开关
CN104409267B (zh) * 2014-11-27 2016-08-17 无锡飞世龙机电有限公司 一种带有接地操作机构的接地开关
CN104600577B (zh) * 2015-02-10 2017-01-25 胡俊兵 一种高压开关柜智能接地刀闸
CN108933058B (zh) * 2018-05-04 2023-11-28 金晓亮 一种中压交直流大功率带有接地功能的隔离开关
EP3788707B1 (fr) * 2018-06-19 2022-10-12 Siemens Energy Global GmbH & Co. KG Systeme d'équilibrage du potentiel pour un convertisseur multiniveau modulaire
DE102020202689B4 (de) 2020-03-03 2022-06-09 Siemens Aktiengesellschaft Schaltanordnung für Mittelspannung

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Publication number Priority date Publication date Assignee Title
WO2022226693A1 (fr) * 2021-04-25 2022-11-03 Abb Schweiz Ag Interrupteur de mise à la terre pour appareillage de commutation et appareillage de commutation associé

Also Published As

Publication number Publication date
DE102007033704B4 (de) 2009-04-30
DE102007033704A1 (de) 2009-02-05
WO2009010359A2 (fr) 2009-01-22
WO2009010359A3 (fr) 2009-03-26

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