EP1928065B1 - Sectionneur moyenne tension étanche au gaz - Google Patents

Sectionneur moyenne tension étanche au gaz Download PDF

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Publication number
EP1928065B1
EP1928065B1 EP06125177.3A EP06125177A EP1928065B1 EP 1928065 B1 EP1928065 B1 EP 1928065B1 EP 06125177 A EP06125177 A EP 06125177A EP 1928065 B1 EP1928065 B1 EP 1928065B1
Authority
EP
European Patent Office
Prior art keywords
disconnector
switch
shell
medium voltage
gas
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
EP06125177.3A
Other languages
German (de)
English (en)
Other versions
EP1928065A1 (fr
Inventor
Roberto Capitanio
Francesco Belloni
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
Original Assignee
ABB Schweiz 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 ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to ES06125177.3T priority Critical patent/ES2630405T3/es
Priority to EP06125177.3A priority patent/EP1928065B1/fr
Priority to CNU2007203051373U priority patent/CN201163710Y/zh
Publication of EP1928065A1 publication Critical patent/EP1928065A1/fr
Application granted granted Critical
Publication of EP1928065B1 publication Critical patent/EP1928065B1/fr
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Anticipated expiration legal-status Critical

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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
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs

Definitions

  • the present invention relates to a medium voltage gas-insulated switch-disconnector, in particular a three-phase, three positions general purpose switch-disconnector with integrated earthing switch suitable for medium voltage.
  • the switch-disconnector of the invention are typically used in medium voltage switchgear within secondary distribution substations for supplying lines, power transformers and networks.
  • Medium voltage gas-insulated switch-disconnector are well known in the art. They usually consist of a gas-tight casing that defines an internal space filled with an insulating gas and houses, for each phase, one or more moving contacts and one or more corresponding fixed contacts.
  • a switch-disconnector comprises for each phase, a moving contact, a fixed contact and an earthing contact, the moving contact being able to move between open, closed and earthed positions.
  • the switch-disconnectors need to satisfy a number of requirements which often cannot be met by the same switch-disconnector. For instance, in general it is desirable to have a switch-disconnector which is as compact as possible so as to occupy the minimum possible space within the unit it is installed in. In some cases, it is necessary to have a metal earthed segregation between the upper and lower compartment of the unit and this is generally achieved by using a switch-disconnector provided with a stainless steel casing. On the other hand, in such a case, the need of maintaining a minimum electrical distance with respect to the busbar does not allow to put the switch-disconnector too close to the busbars themselves, with a consequent waste of internal space on the unit.
  • the present invention is aimed at providing a switch-disconnector having the highest possible number of standardized components, thereby reducing manufacturing and maintenance costs.
  • EP 0 485 306 A1 discloses a two shell plastic housing for a Medium Voltage gas-insulated switch-disconnector.
  • FR 2 259 459 discloses a Medium Voltage gas-insulated switch-disconnector according to the pre-amble of claim 1.
  • the present invention relates to a Medium Voltage gas-insulated switch-disconnector as defined by claim 1.
  • one of the half shells is made of polymeric material, it is possible to have a reasonably compact size of the overall housing, particularly if the bushings are integrated with said half-shell made of polymeric material, as better described below.
  • the polymeric material is insulating, it is possible to reduce the electrical distance with respect to, e.g., the busbars, thereby reducing the occupied volume within a panel.
  • the half shell is made of mental material and earthed
  • a metal earthed segregation between the upper part and the lower part of the unit in which the is switch-disconnector is installed is achieved e.g. between the busbar compartment and the feeder compartment of a metal-enclosed switchgear.
  • the metal earthed segregation, provided by the half-shell made of metal material considerably reduces the possibility of a short-circuit between the phases and between the upper and lower contacts of the same phase due to leakage currents.
  • the metal material guarantee safe performance in case of internal fault.
  • a Medium Voltage switchgear including a switch-disconnector according to the general definition given above, is also part of the present invention
  • the gas-insulated medium voltage switch-disconnector comprises a gas-tight housing 2 which contains an insulating gas. Insulating gases, such as SF6, are well-known and generally used in the art and will not further described here.
  • the switch-disconnector also comprises, for each phase, a moving contact, a fixed contact and an earthing contact (not shown in the attached figures) which are positioned inside said housing.
  • a three-phase switch-disconnector is shown, having a corresponding number moving contacts, fixed contacts and earthing contacts.
  • An operating mechanism 3 (shown only in figure 6 ) is generally used for moving said moving contact between open, closed and earthed positions, according to well known procedures.
  • the housing may also include a pressure indicator, an exhaust valve or, in general, a pressure relief system for any gas overpressure, as well as one or more inspection windows for visual check of the contacts position.
  • the gas-tight housing 2 comprises a first, upper, half-shell 21 and a second, lower, half shell 22, which are coupled to each other in a gas-tight manner.
  • one of two half shells 21, 22 is made of metal material, while the other is made of polymeric material.
  • the upper half-shell 21 and the lower half shell 22 advantageously comprise a flanged-portion, respectively 210 and 220, for the mutual interface between them.
  • Said flanged portions 210 and 220 may comprise one or more seats for sealing means, such as gaskets, and may be provided with coupling and fixing means for keeping the two half-shells 21 and 22 joined in a gas-tight manner.
  • sealing means such as gaskets
  • screw means can be used for fixing the two-half shells 21, 22.
  • the switch-disconnector comprises a first bushing 41 associated with said first, upper, half-shell 21 and a second bushing 42 associated with said second, lower, half-shell 22.
  • the first, upper, half-shell 21 is made of polymeric material and the second, lower, half-shell 22 is made of metal material.
  • the lower half-shell made of metal it is possible to access the lower compartment even if the busbars are under voltage.
  • the polymeric material used for one of the two half-shells can be an epoxy resin; other kinds of polymeric materials can obviously be used, according to the needs.
  • the metal material used for the other of the two half-shells can be steel, for example stainless steel or pre-galvanized steel.
  • the half-shell made of polymeric material comprises, for each phase, an integral-made bushing, i.e. the half-shell 21 and the three bushings 41 are made in a single piece.
  • an integral-made bushing i.e. the half-shell 21 and the three bushings 41 are made in a single piece.
  • the switch-disconnector 1 of the invention comprises, for each phase, a bushing 42 assembled with said half-shell 22 made of metal material, i.e. three bushing 42 for the three-phase switch-disconnector of the attached figures.
  • a bushing 42 assembled with said half-shell 22 made of metal material, i.e. three bushing 42 for the three-phase switch-disconnector of the attached figures.
  • the bushing may comprise, integrated in their structure, a voltage indicator.
  • the first bushings 41 support the fixed contact (not shown) positioned inside the housing 2, while the second bushings 42 support the moving contact (not shown) also positioned inside the housing 2.
  • the moving contact can be a blade pivotally supported by the terminal 420 of the bushing 42, said blade being capable to move between a close position, in which it is engaged with the corresponding fixed contact, an earthed position in which it is engaged with a corresponding earthing contact, and an open position, in which it not engaged with said fixed or earthing contacts.
  • a driving shaft (not shown) is normally provided and connects the three moving contacts to the operating mechanism 3 which, as shown in figure 6 , is positioned externally to the housing 2.
  • said half-shell 22 made of metal material is earthed.
  • the earthing contact (not shown) is connected to said half-shell 22 made of metal material.
  • the present invention also relates to a medium voltage switchgear 10, said switchgear comprising a switch-disconnector 1 according to what defined above.
  • the medium voltage switchgear 10 comprises a casing 101 which defines defining an internal space.
  • the switch-disconnector 1 is generally positioned inside said casing 101 so as to divide said internal space in a first, upper, compartment 110 and a second, lower, compartment 120.
  • the operating mechanism 3, for moving the moving contacts of the switch-disconnector between open, closed and earthed positions, is normally positioned outside the casing 101 and is connected to said moving contact through a driving shaft.
  • the upper compartment 110 can be for instance the busbar compartment, while the lower compartment 120 can be the feeder, or cable, compartment.
  • the switch-disconnector 1 provides a metal-earthed segregation between said first, upper, compartment 110 and said second, lower, compartment 120.
  • the extremely compact structure of the first half shell 21 made of insulating polymeric material, e.g. epoxy resin allows reducing the electrical distance with respect to the busbar, thereby minimizing the occupied volume inside the casing itself.
  • switch-disconnector thus conceived may undergo numerous modifications and come in several variants, all coming within the scope of the invention as defined by the claims. Moreover, all the component parts described herein may be substituted by other, technically equivalent elements. In practice, the component materials and dimensions of the device may be of any nature, according to need and the state of the art.

Landscapes

  • Gas-Insulated Switchgears (AREA)

Claims (9)

  1. Sectionneur moyenne tension à isolation gazeuse (1) :
    - un boîtier étanche au gaz (2) contenant un gaz isolant ;
    - pour chaque phase, un contact mobile, un contact fixe et un contact de mise à la terre à l'intérieur dudit boîtier ;
    - un mécanisme de commande (3) pour déplacer ledit contact mobile entre les positions ouverte, fermée et mise à la terre ;
    ledit boîtier étanche au gaz (2) comprenant une première demi-coque supérieure (21) et une seconde demi-coque inférieure (22) couplée d'une manière étanche au gaz, l'une desdites première et seconde demi-coques (21, 22) étant réalisée avec un matériau métallique, l'autre étant réalisée avec un matériau polymère,
    caractérisé en ce que ladite semi-coque réalisée avec un matériau métallique est mise à la terre, ledit sectionneur (1) comprenant, pour chaque phase, une première douille (41) associée à ladite première demi-coque supérieure (21) et une seconde douille (42) associée à la seconde demi-coque inférieure (22), ladite première douille supportant ledit contact fixe et ladite seconde douille supportant ledit contact mobile.
  2. Sectionneur (1) selon la revendication 1, caractérisé en ce que ladite première demi-coque supérieure (21) est réalisée avec un matériau polymère et ladite seconde demi-coque inférieure (22) est réalisée avec un matériau métallique.
  3. Sectionneur (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que ledit matériau polymère est une résine époxy et ledit matériau métallique est de l'acier.
  4. Sectionneur (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que ladite demi-coque réalisée à partir de matériau polymère comprend, pour chaque phase, une douille solidaire.
  5. Sectionneur (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend, pour chaque phase, une douille assemblée avec ladite demi-coque réalisée à partir de matériau métallique.
  6. Sectionneur (1) selon la revendication 1, caractérisé en ce que ledit contact de mise à la terre est raccordé à ladite demi-coque réalisée à partir de matériau métallique.
  7. Dispositif de commutation moyenne tension (10), caractérisé en ce qu'il comprend un sectionneur (1) selon l'une quelconque des revendications 1 à 6.
  8. Dispositif de commutation moyenne tension (10) selon la revendication 7, caractérisé en ce qu'il comprend un boîtier (101) définissant un espace interne, ledit sectionneur (1) étant positionné à l'intérieur dudit boîtier (101) et divisant ledit espace interne dans un premier compartiment supérieur (110) et un second compartiment inférieur (120).
  9. Dispositif de commutation moyenne tension (10) selon la revendication 10, caractérisé en ce que ledit sectionneur (1) fournit une ségrégation métallique mise à la terre entre ledit premier compartiment supérieur (110) et ledit second compartiment inférieur (120).
EP06125177.3A 2006-11-30 2006-11-30 Sectionneur moyenne tension étanche au gaz Active EP1928065B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES06125177.3T ES2630405T3 (es) 2006-11-30 2006-11-30 Interruptor seccionador de media tensión aislado con gas
EP06125177.3A EP1928065B1 (fr) 2006-11-30 2006-11-30 Sectionneur moyenne tension étanche au gaz
CNU2007203051373U CN201163710Y (zh) 2006-11-30 2007-11-27 中压气体绝缘负荷开关

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06125177.3A EP1928065B1 (fr) 2006-11-30 2006-11-30 Sectionneur moyenne tension étanche au gaz

Publications (2)

Publication Number Publication Date
EP1928065A1 EP1928065A1 (fr) 2008-06-04
EP1928065B1 true EP1928065B1 (fr) 2017-01-04

Family

ID=37907156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06125177.3A Active EP1928065B1 (fr) 2006-11-30 2006-11-30 Sectionneur moyenne tension étanche au gaz

Country Status (3)

Country Link
EP (1) EP1928065B1 (fr)
CN (1) CN201163710Y (fr)
ES (1) ES2630405T3 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008063683A1 (de) * 2008-12-19 2010-07-08 Abb Technology Ag Gasisolierter Schalteer
CN101504895A (zh) * 2009-01-16 2009-08-12 北京维益埃电气有限公司 新型压气式负荷开关单元
ITMI20090140U1 (it) 2009-04-29 2010-10-30 Abb Technology Ag Sezionatore a media tensione isolato in gas.
HUE030140T2 (hu) * 2010-01-18 2017-04-28 Abb Technology Ag Befogadó modul megszakítókkal gáz-szigetelésû kapcsolóberendezéshez
JP5740687B2 (ja) * 2011-01-18 2015-06-24 株式会社ダイヘン 地上設置型変圧器装置
EP2645378B1 (fr) * 2012-03-26 2014-10-08 ABB Technology AG Dispositif électrique avec isolateurs
ES2529353T3 (es) 2012-03-26 2015-02-19 Abb Technology Ag Interruptor eléctrico y equipo eléctrico relacionado
UA26312S (uk) 2012-07-31 2014-02-10 Абб Текнолоджі А Пристрій перемикаючий для електричного розподільного пристрою
CN103236655B (zh) * 2013-03-01 2016-05-18 无锡飞世龙机电有限公司 一种环网柜主回路
CN105308811B (zh) * 2013-06-18 2018-01-26 西门子公司 气体绝缘的中压开关设备
WO2015052100A1 (fr) * 2013-10-07 2015-04-16 Abb Technology Ag Appareil permettant la production, la distribution et/ou l'usage de l'énergie électrique et composant pour un tel appareil
CN104779090A (zh) * 2015-05-08 2015-07-15 国网上海市电力公司 一种旁路负荷开关
EP4276870B1 (fr) 2022-05-12 2026-04-22 ABB Schweiz AG Appareil de commutation moyenne tension

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2259459A1 (en) * 1974-01-24 1975-08-22 Distrelec Sarl Single enclosure high voltage switching set - has insulating male connectors for cables and removable connections
DE3513264A1 (de) * 1985-03-12 1986-09-18 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
FR2628258A1 (fr) * 1988-03-07 1989-09-08 Merlin Gerin Interrupteur rotatif multipolaire a enveloppe etanche commune a tous les poles
FR2668851B1 (fr) * 1990-11-06 1994-10-07 Merlin Gerin Interrupteur rotatif multipolaire.
IT1309626B1 (it) * 1999-11-03 2002-01-30 Vei Electric Systems Spa Dispositivo di sezionamento e interruzione, per cabine elettriche.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1928065A1 (fr) 2008-06-04
CN201163710Y (zh) 2008-12-10
ES2630405T3 (es) 2017-08-21

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