EP3029698B1 - Metal shell for electrical switching device - Google Patents
Metal shell for electrical switching device Download PDFInfo
- Publication number
- EP3029698B1 EP3029698B1 EP15197293.2A EP15197293A EP3029698B1 EP 3029698 B1 EP3029698 B1 EP 3029698B1 EP 15197293 A EP15197293 A EP 15197293A EP 3029698 B1 EP3029698 B1 EP 3029698B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flank
- wall
- slot
- shell
- current
- 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.)
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- 229910052751 metal Inorganic materials 0.000 title claims description 11
- 239000002184 metal Substances 0.000 title claims description 11
- 238000001816 cooling Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01H9/52—Cooling of switch parts
-
- 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
- H01H9/52—Cooling of switch parts
- H01H2009/526—Cooling of switch parts of the high voltage switches
Definitions
- the invention relates to a metal casing for enclosing an electrical power switching device which is traversed by a nominal current inducing a return current flowing in the wall of the casing and tending to heat it.
- Such an installation typically corresponds to the case of a current generator circuit breaker associated with a power generation unit such as a power plant, which can be thermal, nuclear or other.
- Such a generator circuit breaker is then interposed between the production unit which supplies a large current under a relatively low voltage, and one or more step-up transformers. Voltage rise limits online losses for power transmission.
- the circuit breaker is connected upstream and downstream to sets of conductor bars. It is mounted in an aluminum casing which is itself connected to metal ducts surrounding each conductor bar connected to the circuit breaker.
- the internal space delimited by the casing and the ducts is filled with slightly pressurized air to prevent dust or other particles from entering this space.
- the nominal current flowing in the bars is an alternating current of high intensity, it gives rise, by induction effect, to the establishment of a so-called return current flowing in the sheaths and in the envelope of the circuit breaker, in the direction inverse of the nominal current.
- the document FR2939560 discloses a metal casing for an electrical switching device according to the preamble of claim 1.
- an external pipe 6 equipped with an external radiator 7, in which circulates the gas present in the chamber to cool it.
- the casing is equipped with external conductive bars 52 connected to each end of the casing, so that in case of appearance of currents of Foucault, these are shared between the bars and the envelope, to limit the current flowing in this envelope.
- the object of the invention is thus to provide a simple solution for improving the cooling of the internal space of such an envelope
- the invention relates to a metal casing for an electrical switching device such as a circuit breaker or disconnector according to claim 1.
- the cooling is improved because the double wall that constitutes the flank with the outer wall that runs alongside it the passage of the return flow outwardly in the outer wall, so that it does not heat the casing body.
- the invention also relates to an envelope as defined by the dependent claims 2-5.
- the double wall is thus the seat of a flow of air established by natural convection to cool the outer wall and the sidewall.
- the outer wall traversed by the return current is thus cooled at its inner face and at its outer face which is directly in contact with the external environment.
- the envelope according to the invention which is indicated by 1 in the figures contains a switchgear which is here a circuit breaker 2 which is connected to a first conducting bar 3 and a second conducting bar 4.
- the first conductive bar 3 is surrounded by a metal sheath 6, and the second conductive bar 4 is surrounded by another metal sheath, marked by 7.
- These two sheaths 6 and 7 are tubular and are both sealingly connected to the Envelope 1 enclosing the circuit breaker.
- the first bar 3 is connected to a circuit breaker connector located at one of its ends by a set of metal braids 8.
- the second bar 4 is connected to another contactor of the circuit-breaker by another set of metal braids 9.
- the casing 1 which is made of aluminum has a generally parallelepiped shape delimited by a parallelepiped body 11 corresponding to its lower portion and whose open upper face is closed by a rectangular lid 12 reported.
- the casing body 11 thus comprises a bottom 13, two lateral flanks 14 and 16, as well as a front wall 17 and a rear wall 18.
- the front wall 17 has a central opening, visible more clearly on the figure 4 , and which is crossed by the first bar 3, the first sheath 6 having its end welded to the outer face of this front face, all around the opening.
- the rear wall 18 has a central opening through which the second bar 4 passes, the second sheath 7 being welded at its end to this rear wall.
- the first bar 3, the circuit breaker 2 and the second bar 4 are aligned in a main direction AX horizontal.
- This direction AX corresponds to the direction of passage of the nominal current through the circuit breaker and the direction of passage of the return current through the sheaths and the envelope 1 in the opposite direction.
- the lateral flank 14 has a first slot 19 located in the region of its front end, and extending from bottom to top in this flank 14, perpendicular to the axis AX.
- This sidewall 14 has at its opposite end, that is to say in the region of its rear end, another slot 21 of the same type extending from bottom to top being located in the rear region of this sidewall.
- the two slots 19 and 21 which each constitute an artifice opposing the passage of current, that is to say that they offer a significant electrical resistance to very significantly reduce the electrical intensity of the current flowing in the sidewall.
- slots 19 and 21 are closed by seals 22 and 23 electrically insulating and which are sealed to ensure the tightness of the sheath.
- the flank 14 which is plane carries an outer wall 24, generally flat and rectangular, having substantially the same length and the same height as the flank 14 which carries it. It runs along the outer face of the sidewall 14 being spaced from this outer face.
- This wall 24 extends beyond the slots 19 and 21 that it covers, and is fixed by welding, or even by bolting, of two of its opposite edges to each end of the flank 14.
- the opposite edges of the outer wall 24 through which this wall is fixed, are those which extend vertically when the envelope is installed.
- flank 16 also has two slots, and it also carries another external wall 26 in the same arrangement as for the sidewall 14.
- each flank thus has a much higher electrical resistance than the outer wall that it carries.
- the return current flowing through the casing 1 passes through mainly the outer walls 24 and 26 of this envelope instead of crossing the sides 14 and 16 of this envelope.
- the space E which is delimited by the outer wall 24 and the flank 14 carrying this wall, is open at the bottom and at the top to the outside.
- the lower opening, marked by 27 corresponds to the spacing between the lower horizontal edge of the wall 24 and the outer face of the sidewall 14.
- the upper opening, marked by 28 corresponds to the spacing between the upper horizontal edge of the wall 24 and the outer face of the sidewall 14.
- the outer wall 26 and the flank 16 which carries it define a lower opening and an upper opening 31 and 32 to promote the circulation of cooling air.
- the return current which tends to heat the conductors it passes preferably passes through the outer walls 24 and 26 instead of passing through the flanks 14 and 16 which are part of the casing body.
- the passage of the current in the sidewalls is reduced by means of two devices in the form of slots provided in each sidewall. But it is possible to provide a single vertical slot located for example in the central region, which may be sufficient to limit the intensity of the current flowing in the sidewall.
- These devices may also be in the form of portions of the electrically insulating flank not necessarily having the form of slots: the central region of the sidewall may for example be made of electrically insulating material.
- the envelope according to the invention contains a circuit breaker, but it can be used to contain other types of electrical switches such as a disconnector, an earthing switch, or other.
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Gas-Insulated Switchgears (AREA)
Description
L'invention concerne une enveloppe métallique destinée à renfermer un dispositif de commutation électrique de puissance qui est traversé par un courant nominal induisant un courant de retour circulant dans la paroi de l'enveloppe et tendant à l'échauffer.The invention relates to a metal casing for enclosing an electrical power switching device which is traversed by a nominal current inducing a return current flowing in the wall of the casing and tending to heat it.
Une telle installation correspond typiquement au cas d'un disjoncteur de générateur de courant associé à une unité de production de courant électrique telle qu'un centrale électrique, pouvant être thermique, nucléaire ou autre.Such an installation typically corresponds to the case of a current generator circuit breaker associated with a power generation unit such as a power plant, which can be thermal, nuclear or other.
Un tel disjoncteur de générateur est alors interposé entre l'unité de production qui fournit un courant important sous une tension relativement faible, et un ou des transformateurs élévateurs de tension. L'élévation de tension permet de limiter les pertes en ligne pour le transport d'électricité.Such a generator circuit breaker is then interposed between the production unit which supplies a large current under a relatively low voltage, and one or more step-up transformers. Voltage rise limits online losses for power transmission.
Dans une telle installation, le disjoncteur est raccordé en amont et en aval à des jeux de barres conducteurs. Il est monté dans une enveloppe en aluminium qui est elle-même raccordée à des gaines métalliques entourant chaque barre conductrice connectée au disjoncteur.In such an installation, the circuit breaker is connected upstream and downstream to sets of conductor bars. It is mounted in an aluminum casing which is itself connected to metal ducts surrounding each conductor bar connected to the circuit breaker.
L'espace interne délimité par l'enveloppe et les gaines est rempli d'air légèrement pressurisé pour éviter que des poussières ou autres particules ne pénètrent à l'intérieur de cet espace.The internal space delimited by the casing and the ducts is filled with slightly pressurized air to prevent dust or other particles from entering this space.
Le courant nominal circulant dans les barres étant un courant alternatif d'intensité élevée, il donne lieu par effet d'induction à l'établissement d'un courant dit de retour qui circule dans les gaines et dans l'enveloppe du disjoncteur, en sens inverse du courant nominal.Since the nominal current flowing in the bars is an alternating current of high intensity, it gives rise, by induction effect, to the establishment of a so-called return current flowing in the sheaths and in the envelope of the circuit breaker, in the direction inverse of the nominal current.
D'une manière générale, on ne cherche pas à éviter l'apparition de ce courant de retour, car il contribue à réduire l'intensité du champ magnétique s'établissant dans l'installation. Ce courant de retour permet ainsi de limiter les phénomènes de corrosion auxquels donnerait lieu un champ magnétique trop important.In general, it is not sought to avoid the appearance of this return current, because it helps to reduce the intensity of the magnetic field established in the installation. This return current thus makes it possible to limit the corrosion phenomena to which an excessive magnetic field would give rise.
Néanmoins, ce courant de retour chauffe l'enveloppe par effet Joule, ainsi que l'espace interne renfermant le disjoncteur, alors que la température du disjoncteur doit rester inférieure à une valeur prédéterminée pour assurer un fonctionnement normal.Nevertheless, this return current heats the envelope by Joule effect, as well as the internal space containing the circuit breaker, while the temperature of the circuit breaker must remain below a predetermined value to ensure normal operation.
A titre d'ordre de grandeur, la température d'un tel disjoncteur doit rester inférieure à cent cinq degrés Celcius lorsque la température extérieure est de quarante degrés Celcius. Le document
D'une manière générale, les solutions connues compliquent significativement la structure générale associée à l'enceinte, induisant notamment un coût d'intégration élevé.In general, the known solutions significantly complicate the general structure associated with the enclosure, in particular inducing a high integration cost.
L'objet de l'invention est ainsi d'apporter une solution simple pour améliorer le refroidissement de l'espace interne d'une telle enveloppeThe object of the invention is thus to provide a simple solution for improving the cooling of the internal space of such an envelope
L'invention a pour objet une enveloppe métallique pour dispositif de commutation électrique tel qu'un disjoncteur ou un sectionneur conformément à la revendication 1. Le refroidissement est amélioré du fait que la double paroi que constitue le flanc avec la paroi externe qui le longe force le passage du courant de retour vers l'extérieur dans la paroi externe, pour qu'il ne réchauffe pas le corps d'enveloppe.The invention relates to a metal casing for an electrical switching device such as a circuit breaker or disconnector according to
L'invention concerne également une enveloppe telle que définie par les revendications dépendantes 2-5. La double paroi est ainsi le siège d'un flux d'air s'établissant par convection naturelle pour refroidir la paroi externe et le flanc. La paroi externe traversée par le courant de retour est ainsi refroidie au niveau de sa face interne et au niveau de sa face externe qui est directement au contact de l'environnement externe.The invention also relates to an envelope as defined by the dependent claims 2-5. The double wall is thus the seat of a flow of air established by natural convection to cool the outer wall and the sidewall. The outer wall traversed by the return current is thus cooled at its inner face and at its outer face which is directly in contact with the external environment.
-
La
figure 1 est une vue en coupe latérale d'une enveloppe selon l'invention installée et renfermant un disjoncteur raccordé à deux barres conductrices sous gaines ;Thefigure 1 is a side sectional view of an envelope according to the invention installed and enclosing a circuit breaker connected to two conductive bars in sheaths; -
La
figure 2 est une vue en coupe de dessus d'une enveloppe selon l'invention installée et renfermant un disjoncteur raccordé à deux barres conductrices sous gaines ;Thefigure 2 is a sectional view from above of an envelope according to the invention installed and containing a circuit breaker connected to two busbars under sheaths; -
La
figure 3 est une vue de détail d'un joint d'étanchéité d'un artifice de l'enveloppe selon l'invention ;Thefigure 3 is a detailed view of a seal of a device of the envelope according to the invention; -
La
figure 4 est une vue de face de l'enveloppe selon l'invention installée représentée seule.Thefigure 4 is a front view of the envelope according to the invention shown alone.
L'enveloppe selon l'invention qui est repérée par 1 dans les figures renferme un appareillage de commutation qui est ici un disjoncteur 2 qui est raccordé à une première barre conductrice 3 et à une seconde barre conductrice 4.The envelope according to the invention which is indicated by 1 in the figures contains a switchgear which is here a
La première barre conductrice 3 est entourée par une gaine métallique 6, et la seconde barre conductrice 4 est entourée par une autre gaine métallique, repérée par 7. Ces deux gaines 6 et 7 sont tubulaires et sont toutes deux raccordées de manière étanche à l'enveloppe 1 renfermant le disjoncteur.The first
La première barre 3 est raccordée à un connecteur du disjoncteur situé à l'une de ses extrémités par un ensemble de tresses métalliques 8. La seconde barre 4 est raccordée à un autre contacteur du disjoncteur par un autre ensemble de tresses métalliques 9.The
L'enveloppe 1 qui est fabriquée en aluminium a une forme généralement parallélépipédique délimitée par un corps parallélépipédique 11 correspondant à sa portion inférieure et dont la face supérieure ouverte est fermée par un couvercle rectangulaire 12 rapporté.The
Le corps d'enveloppe 11 comporte ainsi un fond 13, deux flancs latéraux 14 et 16, ainsi qu'une paroi avant 17 et une paroi arrière 18.The
La paroi avant 17 comporte une ouverture centrale, visible plus clairement sur la
De manière analogue, la paroi arrière 18 comporte une ouverture centrale traversée par la deuxième barre 4, la deuxième gaine 7 étant soudée par son extrémité à cette paroi arrière.Similarly, the
Ainsi, et comme il ressort notamment des
Comme visible dans la
Les deux fentes 19 et 21 qui constituent chacune un artifice s'opposant au passage de courant, c'est-à-dire qu'elles offrent une résistance électrique importante visant à réduire très significativement l'intensité électrique du courant circulant dans le flanc.The two
Ces fentes s'étendent ainsi l'une et l'autre verticalement dans le flanc 14 lorsque l'enveloppe est installée comme dans la
Complémentairement, le flanc 14 qui est plan porte une paroi externe 24, généralement plane et rectangulaire, ayant sensiblement la même longueur et la même hauteur que ce flanc 14 qui la porte. Elle longe la face extérieure du flanc 14 en étant espacée de cette face extérieure.Complementarily, the
Cette paroi 24 s'étend au-delà des fentes 19 et 21 qu'elle couvre, et elle est fixée par soudage, voire par boulonnage, de deux de ses bords opposés à chaque extrémité du flanc 14. Les bords opposés de la paroi externe 24 par lesquels cette paroi est fixée, sont ceux qui s'étendent verticalement lorsque l'enveloppe est installée.This
Comme visible sur la
De manière analogue, le flanc 16 comporte lui aussi deux fentes, et il porte également une autre paroi externe 26 selon la même disposition que pour le flanc 14.Similarly, the
Les fentes formées dans chaque flanc constituent des artifices s'opposant au passage du courant de retour : chaque flanc présente ainsi une résistance électrique beaucoup plus élevée que la paroi externe qu'il porte.The slots formed in each flank constitute devices opposing the passage of the return current: each flank thus has a much higher electrical resistance than the outer wall that it carries.
Ainsi, le courant de retour qui parcourt l'enveloppe 1 traverse majoritairement les parois externes 24 et 26 de cette enveloppe au lieu de traverser les flancs 14 et 16 de cette enveloppe.Thus, the return current flowing through the
Complémentairement, et comme visible sur la
L'ouverture inférieure, repérée par 27 correspond à l'espacement entre le bord horizontal inférieur de la paroi 24 et la face externe du flanc 14. De la manière analogue, l'ouverture supérieure, repérée par 28 correspond à l'espacement entre le bord horizontal supérieur de la paroi 24 et la face externe du flanc 14.The lower opening, marked by 27 corresponds to the spacing between the lower horizontal edge of the
De la même manière, la paroi externe 26 et le flanc 16 qui la porte délimitent une ouverture inférieure et une ouverture supérieure 31 et 32 pour favoriser la circulation d'air de refroidissement.In the same way, the
La combinaison des artifices s'opposant au passage du courant de retour que constituent les fentes formées dans les flancs, avec les parois externes favorisant au contraire le passage du courant de retour, le refroidissement de l'enveloppe est significativement accru.The combination of devices opposing the passage of the return current formed by the slots formed in the flanks, with the outer walls favoring the passage of the return current, the cooling of the casing is significantly increased.
En effet, le courant de retour qui tend à échauffer les conducteurs qu'il parcourt passe préférentiellement par les parois externes 24 et 26 au lieu de passer par les flancs 14 et 16 qui font partie du corps d'enveloppe.Indeed, the return current which tends to heat the conductors it passes preferably passes through the
Dans ces conditions, une très grande partie du courant de retour ne réchauffe pas directement le corps d'enveloppe qui peut ainsi rester à une température plus faible.Under these conditions, a very large part of the return current does not heat the envelope body directly, which can thus remain at a lower temperature.
Mais de plus, l'espace qui est conservé entre chaque paroi externe et chaque flanc qui la porte, et les ouvertures supérieure et inférieure correspondantes favorise la circulation d'air extérieur de bas en haut dans cet espace.But in addition, the space that is kept between each outer wall and each side that carries it, and the upper and lower openings This allows the outside air circulation up and down in this space.
Cette circulation d'air qui s'établit par convection naturelle du fait du réchauffement de la paroi externe par effet Joule résultant du passage du courant de retour, permet de refroidir la paroi externe 24 mais également le flanc 14. Comme on l'aura compris, le même refroidissement par convection naturelle s'établit entre le flanc 16 et la paroi 26 qu'il porte.This circulation of air which is established by natural convection due to the heating of the outer wall by Joule effect resulting from the passage of the return current, allows to cool the
Dans l'exemple des figures, le passage du courant dans les flancs est réduit au moyen de deux artifices sous forme de fentes prévus dans chaque flanc. Mais il est possible de prévoir une seule fente verticale située par exemple en région centrale, ce qui peut suffire à limiter l'intensité du courant circulant dans le flanc.In the example of the figures, the passage of the current in the sidewalls is reduced by means of two devices in the form of slots provided in each sidewall. But it is possible to provide a single vertical slot located for example in the central region, which may be sufficient to limit the intensity of the current flowing in the sidewall.
Ces artifices peuvent aussi se présenter sous forme de portions du flanc électriquement isolantes n'ayant pas nécessairement la forme de fentes : la région centrale du flanc peut par exemple être fabriquée en matériau électriquement isolant.These devices may also be in the form of portions of the electrically insulating flank not necessarily having the form of slots: the central region of the sidewall may for example be made of electrically insulating material.
Par ailleurs, dans l'exemple des figures, l'enveloppe selon l'invention renferme un disjoncteur, mais elle peut être utilisée pour contenir d'autres types de commutateurs électriques comme par exemple un sectionneur, un sectionneur de mise à la terre, ou autre.Furthermore, in the example of the figures, the envelope according to the invention contains a circuit breaker, but it can be used to contain other types of electrical switches such as a disconnector, an earthing switch, or other.
Claims (5)
- Metal shell (1) for electrical switchgear such as a circuit breaker (2) or a disconnect switch which is intended to be connected to two conductors (3, 4) under a metal sheath (6, 7) through which passes a nominal current flowing according to a direction of passage (AX), with this shell (1) being passed through by a return current induced by the nominal current and flowing in the opposite direction according to the direction of passage (AX), characterised in that this shell (1) comprises:- a shell body (11) including at least one lateral flank (14, 16) provided with at least one through-slot of an artifice (19, 21) extending perpendicularly to the direction of passage of current in order to oppose the passage of the return current in this lateral flank (14, 16) by offering an electrical resistance aiming to reduce the electrical intensity of the current flowing in the flank (14, 16);- an outer wall (24, 26) passing along each flank (14, 16) provided with at least one slot (19, 21) and spaced from the latter while still being connected to the shell body (11) upstream and downstream of the at least one slot (19, 21) in relation to the direction of passage of the current, with each outer wall (24, 26) offering the return current an electrical resistance that is less than the flank (14, 16) with at least one slot (19, 21) that it passes along.
- Shell according to claim 1, further comprising for each flank (14, 16) provided with at least one slot (19, 21) and along which passes an outer wall (24, 26), a first opening (28, 32) and a second opening (27, 31) located respectively in the top portion and in the bottom portion of the shell in service in order to place in communication the space separating the flank (14, 16) from the outer wall (24, 26) borne by this flank with the external environment in such a way as to allow for a circulation of cooling air in this space.
- Shell according to claim 3 comprising a seal (22, 23) made of a non-conducting material closing each slot (19, 21).
- Shell according to claim 3 or 4, of which each flank (14, 16) comprises two slots spaced from one another along the direction of passage of the current.
- Shell according to one of the preceding claims, wherein each outer wall (24, 26) is borne by a flank (14, 16) provided with at least one slot (19, 21), by being fastened by welding to the flank (14, 16) which bears it on either side of the at least one slot (19, 21) that this flank (14, 16) comprises.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1461798A FR3029346B1 (en) | 2014-12-02 | 2014-12-02 | METAL ENVELOPE FOR ELECTRICAL SWITCHING DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3029698A1 EP3029698A1 (en) | 2016-06-08 |
EP3029698B1 true EP3029698B1 (en) | 2018-05-02 |
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ID=52737226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15197293.2A Active EP3029698B1 (en) | 2014-12-02 | 2015-12-01 | Metal shell for electrical switching device |
Country Status (2)
Country | Link |
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EP (1) | EP3029698B1 (en) |
FR (1) | FR3029346B1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE348794C (en) * | 1922-02-18 | Siemens Schuckertwerke G M B H | Housing closed on all sides for electrical apparatus | |
US3711622A (en) * | 1972-03-03 | 1973-01-16 | Gen Electric | Means for reducing eddy current heating of a tank in electrical apparatus |
FR2846142B1 (en) * | 2002-10-16 | 2004-12-24 | Alstom | DEVICE COOLING DEVICE UNDER SHEATH |
FR2872336B1 (en) * | 2004-06-29 | 2007-07-20 | Areva T & D Sa | PASSIVE COOLING DEVICE FOR ELECTRICAL EQUIPMENT AND ELECTRICAL EQUIPMENT COMPRISING SAID DEVICE |
FR2939560B1 (en) * | 2008-12-05 | 2011-12-09 | Areva T & D Sa | METHOD AND APPARATUS FOR COOLING THE INTERIOR OF A HIGH AMPERAGE DISCONNECT SWITCH ASSEMBLY |
ATE517425T1 (en) * | 2009-02-13 | 2011-08-15 | Abb Technology Ag | COOLING DEVICE IN AN ELECTRICAL COMPONENT OF A HIGH-VOLTAGE SYSTEM WITH A HEAT PIPE AND METHOD FOR PRODUCING THE COOLING DEVICE |
ES2606178T3 (en) * | 2012-01-19 | 2017-03-23 | HYDRO-QUéBEC | Device for an outdoor switching device |
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2014
- 2014-12-02 FR FR1461798A patent/FR3029346B1/en active Active
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2015
- 2015-12-01 EP EP15197293.2A patent/EP3029698B1/en active Active
Non-Patent Citations (1)
Title |
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Also Published As
Publication number | Publication date |
---|---|
FR3029346A1 (en) | 2016-06-03 |
EP3029698A1 (en) | 2016-06-08 |
FR3029346B1 (en) | 2018-03-09 |
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