EP3424059B1 - Transformateur équipé d'un module de refroidissement fixé par crochet - Google Patents

Transformateur équipé d'un module de refroidissement fixé par crochet Download PDF

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Publication number
EP3424059B1
EP3424059B1 EP17720443.5A EP17720443A EP3424059B1 EP 3424059 B1 EP3424059 B1 EP 3424059B1 EP 17720443 A EP17720443 A EP 17720443A EP 3424059 B1 EP3424059 B1 EP 3424059B1
Authority
EP
European Patent Office
Prior art keywords
housing
electrical appliance
cooling
cooling module
counterpart
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
EP17720443.5A
Other languages
German (de)
English (en)
Other versions
EP3424059B8 (fr
EP3424059A2 (fr
Inventor
Christian ETTL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Austria GmbH
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 EP3424059A2 publication Critical patent/EP3424059A2/fr
Application granted granted Critical
Publication of EP3424059B1 publication Critical patent/EP3424059B1/fr
Publication of EP3424059B8 publication Critical patent/EP3424059B8/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling

Definitions

  • the invention relates to an electrical device for connection to a high-voltage network with a housing that can be filled with insulating liquid, in which a core with at least one winding is arranged, and a cooling module connected to the housing via connecting lines for cooling the insulating liquid.
  • transformers have a housing in which a core with a yoke and a plurality of legs is arranged, at least one leg being enclosed by a winding.
  • the structure consisting of the core and windings is often referred to as an active part by those skilled in the art.
  • the transformer's housing is filled with an insulating liquid which, in addition to providing electrical insulation, should also enable the active part to be cooled.
  • the insulating liquid heated by the active part is passed over a cooling module that is connected to the housing.
  • cooling modules are usually space-consuming and have a high dead weight. They are also preferably firmly fixed to the housing.
  • the U.S. 3,235,823 A describes a three-phase power transformer that has a lower tank section for each phase.
  • the three lower tank sections are connected to one another via an upper tank section, the upper tank section also being divided into three segments. In this way, the lower tank sections and three segments of the upper tank section can be transported independently of one another and connected to one another on site.
  • the known transformer also has cooling units that are fixed to the upper and lower mounting bolts Transformer tank are connected. Each cooling unit is connected to the internal volume of the tank via an upper inlet and a lower outlet, so that the insulating fluid with which the tank is filled can be circulated through the respective cooling unit.
  • the WO 2015/015369 A1 describes a cooling unit designed as a radiator for transformers which have a tank filled with an insulating fluid.
  • the radiator described there forms a flange connection at the inlet and outlet, by means of which the radiator can be connected to further components of a cooling system or also to a tank of the transformer. With the help of a hook ring, the radiator can be lifted, for example to simplify the subsequent assembly.
  • the object of the invention is therefore to provide an electrical device of the type mentioned at the beginning, which is inexpensive, can be transported quickly and quickly put into operation on site.
  • the invention solves this problem in that the cooling module is attached to the housing by means of a hook connection.
  • the cooling module is hooked into the housing as an electrical device in order to start up a transformer or a choke.
  • This enables the cooling module to be attached to the housing with a crane lift.
  • no screw connections are necessary. Due to the hook connection in interaction with the high weight of the cooling module, the electrical device according to the invention withstands the mechanical requirements during operation.
  • an appropriate connection such as a pipe connection, is provided within the scope of the invention.
  • the hook connection advantageously has a hook part firmly connected to the cooling module and a counterpart fixedly arranged on the housing, the hook part and the counterpart being designed so that the hook part can engage with the counterpart.
  • the hook part engages behind the counterpart with a hook-shaped end piece, for example, the weight of the cooling module pressing the hook-shaped end piece against the counterpart.
  • the housing advantageously has a cover, the counterpart being arranged on the cover. According to this advantageous further development, the process of hooking in with a crane is simplified even further within the scope of the invention, since the counterpart, which is arranged on the housing cover, is easily accessible. The commissioning of the electrical device is accelerated even further.
  • two counterparts are provided at the same distance from an edge of the housing.
  • two hook connections are provided which are designed to be identical to one another, so that the cooling module is held symmetrically on the housing.
  • the hook part preferably has a carrier extending in a longitudinal direction with a C-shaped bent free end, the counterpart being designed as a retaining bolt which extends parallel to a wall of the housing and at a distance from it.
  • the retaining bolt is firmly attached to the housing, for example on the housing cover, via two legs firmly connected to the housing, for example by welding, so that an upside-down U-shaped counterpart is provided into which the C-shaped bent end of the Part of the hook can be hooked in easily and reliably.
  • both the housing and the cooling module each have at least one cooling liquid inlet and at least one cooling liquid outlet, which can be connected to one another for exchanging insulating liquid, each cooling liquid outlet and each cooling liquid inlet being equipped with a fluid-tight closing valve.
  • the modules of the electrical device that is to say the housing and the cooling module, can be filled with insulating liquid and transported independently of one another. The two modules are then connected via connections designed for this purpose, for example pipe connections with angle compensators, so that insulating fluid can get from the housing into the cooling module and vice versa.
  • the closing valves make it possible to close the housing or the cooling module in a fluid-tight manner.
  • Fluid-tight closing valves are to be understood as meaning that the closing valves are both for air as well as are impermeable to liquids and thus prevent contamination of the insulating liquid, for example a mineral insulating oil, with moisture or air.
  • an intermediate piece is provided for the fluid-tight connection of the cooling liquid outlet and the cooling liquid inlet, the intermediate piece delimiting a connecting channel that is open on both sides and having a vent opening for venting the connecting channel.
  • the intermediate piece can be vented, for example, by applying a vacuum to the ventilation opening.
  • the closing valves of the respective cooling liquid outlet and of the respective cooling liquid inlet, which are connected to one another via the said intermediate piece, are then opened.
  • an appropriate gas such as nitrogen, sulfur hexafluoride or the like, so that there are no pressure differences.
  • Other processing of the connecting channel is also possible within the scope of the invention.
  • the cooling module has a holding frame which is equipped with the hook part.
  • the holding frame and cooling module can thus be manufactured individually and connected to one another after they have been manufactured and tested.
  • the overall construction, which is also referred to here as a cooling module, can thus be hooked into a counterpart attached to the housing with the aforementioned hook part.
  • the cooling module has a holding frame which is equipped with a lifting engagement for lifting the holding frame.
  • the lifting engagement is, for example, a ring-shaped closed lifting eye, which has an inner diameter that allows a conventional crane hook to be hooked in and thus a simple lifting of the holding frame and thus of the entire cooling module. Notwithstanding this, the lifting engagement is also designed in the shape of a hook.
  • an expansion vessel is attached to the holding frame and is connected to the interior of the housing via a connection line.
  • the expansion vessel can then also be transported as a component separately from the housing.
  • the expansion vessel has a housing connection for receiving or dispensing insulating liquid, which is equipped with a fluid-tight closing valve.
  • a housing connection for receiving or dispensing insulating liquid, which is equipped with a fluid-tight closing valve.
  • the modules can again be connected via an intermediate piece that delimits a connecting channel that is open on both sides and that is equipped with a ventilation opening and / or a drain opening. Before dismantling, insulating liquid can be drained from the intermediate piece via the drain opening.
  • the design of the cooling module is basically arbitrary. However, there are advantages if the cooling module is an active cooling module and has a fan. The fan increases the cooling capacity of the active cooling module compared to a passive cooling module, which is dimensioned accordingly.
  • an outer wall of the electrical device is at least partially bullet-resistant. If the electrical device is used in an energy supply network, it is usually a potential target for destructive attacks from outside as a node. Such an attack is, for example, shooting with handguns or rifles and the use of explosive devices with shrapnel or bombs as a result.
  • the bullet-resistant outer wall which is made, for example, of a bullet-resistant material or material, serves against such attacks.
  • the outer wall forms, for example, the outer boundary of a component of the electrical device.
  • the outer wall forms, for example, the housing or the tank of the electrical device, which is filled with insulating liquid. This applies accordingly to the bushings, the expansion vessel, the cooling unit or other components of the electrical device. Notwithstanding this, the outer wall is arranged at a distance from the housing of the electrical device and designed as a reinforcement fence.
  • the outer wall expediently consists of a bullet-resistant material with a tensile strength of over 1000 MPa. Armored steel, for example, comes into consideration here.
  • the outer wall comprises an outer wall and an inner wall, between which a damping means is arranged.
  • the bullet penetrates the outer wall of the outer wall, the energy of the bullet then being absorbed and dissipated by the damping means.
  • the damping agent is expediently a liquid or a dry foam.
  • FIG. 1 shows a perspective view of a single-phase transformer 1 as an embodiment of an electrical device according to the invention.
  • the transformer 1 shown there has a housing 2 which is equipped with a cooling module 3, an expansion vessel 4, an auxiliary power module 5 and high-voltage bushings 6, 7, 8.
  • the components or modules mentioned are releasably connected to one another and can therefore be easily assembled, disassembled and transported independently of one another.
  • Arresters 9 are used, which have a non-linear resistance within their arrester housing which, in the event of overvoltages, changes from a non-conductive state to a conductive state and thus protects the components connected in parallel to it.
  • the high-voltage bushings 6, 7 and 8 are each designed as plug-in high-voltage bushings and their insertion ends can be inserted into suitable bushings 10 will be introduced.
  • the bushing sockets 10 are designed to be rotationally symmetrical and delimit a cavity that is open towards the housing cover but closed on one side and is designed to be complementary in shape to the insertion end of the respective high-voltage bushing 6, 7, 8.
  • the bushing sockets 10 are also connected to the housing 2 in a fluid-tight manner, so that the inner or oil space of the single-phase transformer 1 is hermetically or fluid-tight, that is to say airtight and liquid-tight, from the outside atmosphere.
  • a line bolt which cannot be seen in the figure, is held which, when the high-voltage bushing 6, 7 or 8 is inserted into the respective bushing socket 10, is in conductive contact with the high-voltage conductor extending through the respective high-voltage bushing 6, 7, 8.
  • Said line bolt extends into the interior of the housing 2, i.e. into its oil chamber, where it is in contact with a winding connection line, which thus electrically connects the bushing to the respective high or low voltage winding of the transformer 1.
  • a column section 12 extends from the fastening connection 11 to a high-voltage connection 13, which in the exemplary embodiment shown is an outdoor connection.
  • the distance between the fastening connection 11 and the high-voltage connection 13 is over 3 meters and in particular 4 meters.
  • FIG. 2 shows the cooling module 3 from the front. It can be seen that the cooling module 3 is equipped with fans 14, the speed of which can be accelerated, decelerated or completely switched off by a controller 15 as a function of the required cooling capacity.
  • the cooling module 3 also has two cooling branches 16 and 17, each with its own connecting pipe 18 and 19, respectively are equipped.
  • the connecting pipes 18 and 19 branch off from an upper collecting line 20, whereby they are brought together again in a lower collecting line 21.
  • the lower collecting line 21 forms a cooling liquid outlet 22 which is connected to a cooling liquid inlet of the housing 2.
  • a cooling liquid inlet for the cooling module 3 is provided in its upper area, via which the insulating liquid entering the cooling module 3 enters the upper collecting line 20 and can reach the cooling branches 16 or 17 from there.
  • the upper collecting line 20 also has two more in FIG Figure 2 non-visible line branches which have a heat exchanger. Insulating fluid that gets into these branches of the line is routed through the respective heat exchanger. Each heat exchanger is in thermally conductive contact with the air flow generated by the fans 14. In contrast, the insulating liquid conducted via the connection lines 18 and 19 is not cooled by the fans 14. The distribution of the insulating liquid to the various flow paths of the cooling module 3 is taken over by the controller 15.
  • FIG 3 shows the cooling module 3 also from the front, but the connection lines are dismantled and the fan 14 and heat exchanger are made transparent, so that a holding frame 23 can be seen.
  • the holding frame 23 is composed of longitudinal and cross members and is used to hold the fan 14, the heat exchangers (not shown in the figure), the cooling branches 16 and 17 and finally the collecting lines 20 and 21.
  • On two longitudinal members 24 of the holding frame 23 is in the upper area of the cooling module 3 each have a lifting eye 25 formed.
  • the lifting eye 25 can be brought into engagement with a crane hook, for example, so that the entire cooling module 3 can be lifted in a simple manner for mounting the electrical device 1.
  • Figure 3 are the openings in the upper collecting line 20 for the connection lines 18 and 19 and their counterpart in the lower collecting line 21.
  • FIG 4 shows the cooling module 3 according to Figure 2 or 3 in a side view in which, in particular, the holding frame 23 is illustrated.
  • the holding frame 23 has a longitudinal beam 24 on each side both at the front and at the rear.
  • the two longitudinal members 24 are arranged parallel to one another and are connected to one another via an upper cross member 26 and a lower cross member 26.
  • a stiffening element 27 extending in the oblique direction from the lower cross member 26 to the upper cross member 26 can be seen, which is connected to the rear longitudinal member 24 via reinforcing ribs 28.
  • the reinforcing ribs 28 increase the mechanical strength of the holding frame 23 and also form a climbing aid.
  • the exit aid 28 makes it easier for a user to climb onto the transformer 1 for maintenance purposes, for example.
  • the front longitudinal beam 24 is equipped with a hook part 29 which has a beam 29 which extends in a longitudinal direction and whose free end is bent in a C-shape.
  • the hook part 29 can be brought into engagement with a counterpart arranged on the housing 2, so that the entire cooling module 3 can be fastened to the housing 2 in a simple manner by hanging it during assembly.
  • a support element 31 can be seen which is fastened to the front longitudinal support 24 and extends parallel to the support 29 of the hook part. After hooking the C-shaped free end of the hook part 29 on the counterpart attached to the housing 2, the support element 31 rests with its free end on the outer wall of the housing 2 and holds the cooling module 3 in a position in which the front The longitudinal support 24 runs essentially parallel to the side wall of the housing 2.
  • FIG. 5 shows the housing 2 with the suspended cooling module 3 in a plan view with the connection lines 18 and 18 installed 19.
  • the cooling liquid inlet 23 of the upper collecting line 20 is connected to an inlet stub 33 of the housing 2 via a connecting line 32.
  • the connection line 32 is fluid-tight, that is to say air-tight and liquid-tight, connected to the inlet connector 33 and has a closing valve 34 in its front region.
  • the cooling liquid inlet 23 of the cooling module 3 is equipped with a closing valve 34.
  • the connection line 32 is connected to the cooling liquid inlet 23 of the cooling module 3 via an intermediate piece 35.
  • the cooling liquid outlet of the housing 2 is connected to the cooling liquid inlet 23 via the intermediate piece 35.
  • the cooling liquid outlet 22 in the lower area of the cooling module 3, which is also equipped with a closing valve 34, is connected via an intermediate piece 35 to a cooling liquid inlet of the housing 2 which is also arranged in the lower area and is equipped with a closing valve 34.
  • Figure 6 shows the mentioned intermediate piece 35 in an enlarged view.
  • the intermediate piece 35 delimits an arcuate connecting channel which is open on both sides and can be connected in a fluid-tight manner to a cooling liquid inlet or cooling liquid outlet via a flange connection 36.
  • a vent screw 37 is provided for venting the connecting channel extending between the two openings.
  • the connecting channel of the intermediate piece 35 can be vented with the aid of the vent screw 37. This is done, for example, by applying a vacuum.
  • the connecting channel can then be filled with a gas or the closing valves 34 of the inputs or outputs can be carefully opened.
  • the intermediate piece 35 also has a drain screw 38 with which insulating liquid can be specifically drained from the connecting channel during dismantling. After the insulating liquid has been drained off, each intermediate piece 35 can be dismantled and then the cooling unit 3 is separated from the housing 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (15)

  1. Appareil (1) électrique de connexion à un réseau de haute tension comprenant
    - un boîtier (2), qui peut être rempli d'un liquide isolant et dans lequel est disposé un noyau ayant au moins un enroulement, et
    - un module (3) de refroidissement, relié au boîtier (2) par des lignes (32, 35) de connexion, pour le refroidissement du liquide isolant,
    caractérisé en ce que
    le module (3) de refroidissement est fixé au boîtier (2) au moyen d'une liaison (30) à crochet.
  2. Appareil (1) électrique suivant la revendication 1,
    caractérisé en ce que
    la liaison (30) à crochet a une partie (29) de crochet reliée fixement au module (3) de refroidissement et une pièce antagoniste montée fixement sur le boîtier (2), la partie (29) à crochet et la pièce antagoniste étant conformées de manière à permettre une pénétration de la partie (29) à crochet dans la pièce antagoniste.
  3. Appareil (1) électrique suivant la revendication 2,
    caractérisé en ce que
    le boîtier (2) a un couvercle et la pièce antagoniste est montée sur le couvercle du boîtier.
  4. Appareil (1) électrique suivant la revendication 3,
    caractérisé en ce que
    il est prévu au moins deux pièces antagonistes à même distance d'un bord du boîtier (2).
  5. Appareil (1) électrique suivant l'une des revendications 2 à 4,
    caractérisé en ce que
    la partie (29)à crochets a un support s'étendant dans la direction longitudinale et ayant une extrémité libre recourbée en forme de C et la pièce antagoniste est un axe de retenue, qui s'étend parallèlement à une paroi du boîtier (2) et à distance de celle-ci.
  6. Appareil (1) électrique suivant l'une des revendications précédentes,
    caractérisé en ce que
    à la fois le boîtier (2) et le module (3) de refroidissement ont chacun au moins une entrée pour du liquide de refroidissement et au moins une sortie pour du liquide de refroidissement, qui peuvent communiquer entre elles pour le remplacement du liquide isolant, chaque sortie pour du liquide de refroidissement et chaque entrée pour du liquide de refroidissement étant équipée d'un robinet (34) de fermeture étanche aux fluides.
  7. Appareil (1) électrique suivant la revendication 5,
    caractérisé en ce que
    une pièce (35) intermédiaire pour la communication fluidique de la sortie pour du liquide de refroidissement et de l'entrée pour du liquide de refroidissement, la pièce (35) intermédiaire délimitant un conduit de communication et ayant une ouverture (37) d'évacuation de l'air pour évacuer l'air du conduit de communication.
  8. Appareil (1) électrique suivant l'une des revendications précédentes,
    caractérisé en ce que
    le module (3) de refroidissement a un cadre (23) de retenue qui est équipé d'une partie (29) à crochet.
  9. Appareil (1) électrique suivant l'une des revendications précédentes,
    caractérisé en ce que
    le module (3) de refroidissement a un cadre (23) de retenue, qui est équipé d'un œillet (25) de levage pour soulever le cadre (23) de retenue.
  10. Appareil (1) électrique suivant la revendication 8 ou 9,
    caractérisé en ce que
    au cadre (23) de retenue est fixé un bac (4) d'expansion, qui communique avec l'intérieur du boîtier (2) par un conduit de communication.
  11. Appareil (1) électrique suivant l'une des revendications précédentes,
    caractérisé en ce que
    le module (3) de refroidissement a au moins une soufflante (14) .
  12. Appareil (1) électrique suivant l'une des revendications précédentes,
    caractérisé en ce que
    une paroi extérieure de l'appareil (1) électrique est constituée au moins par endroit de manière à empêcher la pénétration.
  13. Appareil (1) électrique suivant la revendication 12,
    caractérisé en ce que
    la paroi extérieure est en un matériau empêchant la pénétration ayant une résistance à l'attraction plus grande que 1000 MPa.
  14. Appareil (1) électrique suivant la revendication 12,
    caractérisé en ce que
    la paroi extérieure comprend une partie se trouvant à l'extérieur et une partie se trouvant à l'intérieur, entre lesquelles est disposé un agent d'amortissement.
  15. Appareil (1) électrique suivant la revendication 14,
    caractérisé en ce que
    l'agent d'amortissement est un liquide ou une mousse sèche.
EP17720443.5A 2016-04-29 2017-04-26 Transformateur équipé d'un module de refroidissement fixé par crochet Active EP3424059B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016207390.7A DE102016207390A1 (de) 2016-04-29 2016-04-29 Transformator mit eingehängtem Kühlmodul
PCT/EP2017/059844 WO2017186750A2 (fr) 2016-04-29 2017-04-26 Transformateur équipé d'un module de refroidissement fixé par crochet

Publications (3)

Publication Number Publication Date
EP3424059A2 EP3424059A2 (fr) 2019-01-09
EP3424059B1 true EP3424059B1 (fr) 2021-03-10
EP3424059B8 EP3424059B8 (fr) 2021-04-21

Family

ID=58645052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17720443.5A Active EP3424059B8 (fr) 2016-04-29 2017-04-26 Transformateur équipé d'un module de refroidissement fixé par crochet

Country Status (6)

Country Link
US (1) US10707006B2 (fr)
EP (1) EP3424059B8 (fr)
CN (1) CN109074940B (fr)
CA (1) CA3022193C (fr)
DE (1) DE102016207390A1 (fr)
WO (1) WO2017186750A2 (fr)

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Publication number Priority date Publication date Assignee Title
EP3711074B1 (fr) 2018-01-15 2022-03-30 Siemens Energy Global GmbH & Co. KG Unité de transformateur de puissance transportable
CN109449787B (zh) * 2018-11-26 2020-07-14 河北机电职业技术学院 一种自感应除尘的电气自动化配电箱

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US3137829A (en) * 1959-11-12 1964-06-16 Gen Electric Electrical apparatus
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CN2090036U (zh) * 1990-12-22 1991-12-04 张兴波 立柱双板四通散热器
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WO2013182227A1 (fr) * 2012-06-05 2013-12-12 Siemens Aktiengesellschaft Cuve pour transformateurs ou bobines d'arrêt remplis de liquide
JP6200637B2 (ja) * 2012-08-28 2017-09-20 株式会社日立産機システム 油入変圧器
EP2767989B1 (fr) * 2013-02-14 2016-02-10 Axel Bruns Dispositif de prélèvement d'hélium liquide à partir d'un tomographe à résonance magnétique
ITVI20130201A1 (it) 2013-07-31 2015-02-01 Convett S R L Radiatore in alluminio a tubi ellittici alettati.
ES2549969T3 (es) 2013-08-12 2015-11-03 Abb Technology Ag Panel de intercambio de calor portátil para tanque de transformador corrugado
US9815594B2 (en) * 2014-10-15 2017-11-14 Abb Schweiz Ag Tank for electrical equipment

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Also Published As

Publication number Publication date
EP3424059B8 (fr) 2021-04-21
US20170316861A1 (en) 2017-11-02
WO2017186750A2 (fr) 2017-11-02
US10707006B2 (en) 2020-07-07
CA3022193A1 (fr) 2017-11-02
WO2017186750A3 (fr) 2017-12-21
EP3424059A2 (fr) 2019-01-09
BR112018071969A2 (pt) 2019-02-12
CN109074940A (zh) 2018-12-21
CN109074940B (zh) 2022-06-03
DE102016207390A1 (de) 2017-11-02
CA3022193C (fr) 2021-12-14

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