EP2715743B1 - Elektrische komponente für eine hochspannungsanlage - Google Patents
Elektrische komponente für eine hochspannungsanlage Download PDFInfo
- Publication number
- EP2715743B1 EP2715743B1 EP12712246.3A EP12712246A EP2715743B1 EP 2715743 B1 EP2715743 B1 EP 2715743B1 EP 12712246 A EP12712246 A EP 12712246A EP 2715743 B1 EP2715743 B1 EP 2715743B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current conductor
- control electrode
- insulating body
- polymer composition
- cap
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 72
- 229920000642 polymer Polymers 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 15
- 230000009969 flowable effect Effects 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 12
- 239000004922 lacquer Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 239000012212 insulator Substances 0.000 claims description 8
- 230000005684 electric field Effects 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 239000004033 plastic Substances 0.000 description 14
- 229920003023 plastic Polymers 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 11
- 238000005266 casting Methods 0.000 description 10
- 239000002184 metal Substances 0.000 description 8
- 238000005538 encapsulation Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 206010041953 Staring Diseases 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
- H01B17/28—Capacitor type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
-
- 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
- H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
Definitions
- Such an electrical component after installation in the high-voltage system, it connects a current conductor of a first part of the system, which is electrically insulated with a solid, liquid or gaseous insulating agent from an encapsulation receiving the insulating agent, with a current conductor of a second part the plant.
- This current conductor is typically electrically insulated from the surrounding air, but can also be insulated with another insulating means which is contained in an encapsulation which accommodates the current conductor.
- the electrical component is designed as a partition insulator of a gas-insulated, metal-enclosed switchgear, such a partition insulator separates two spaces of the installation filled with insulating gas from one another and connects two high-voltage current conductors provided in the two spaces.
- Rooms of the high-voltage system is an electrical field when the system is in operation exposed between the high-voltage conductors and the encapsulation, respectively.
- the mounting flange which is electrically conductively connected to the encapsulation and is therefore largely kept at earth potential.
- the electrical component therefore has a control electrode which is guided cylindrically symmetrically around this current connection and which dielectrically shields this connection and uniformizes the electrical field.
- An electrical component of the type mentioned in the introduction is designed, for example, as described in EP 1 284 484 B1 .
- EP 1 771 866 B1 and WO 2009/053147 A1 The implementation described is intended for installation in a generally metallic housing of an electrical high-voltage apparatus, for example in a transformer housing.
- this bushing contains a current conductor that extends along an axis and can be guided at high voltage potential, a rigid insulating body fastened to the current conductor and comprising the current conductor, and a mounting flange that can be guided to ground potential on the outside of the insulating body.
- a capacitor winding is integrated in the insulator.
- the mounting flange separates an airborne portion of the capacitor winding located above the mounting flange from a portion of the capacitor winding which is located below the mounting flange and which, after installation of the bushing in the apparatus, is placed in a non-air insulating material, typically oil or SF 6 is.
- a region of these bushings exposed to the surrounding air each has a shield which acts as weather and radiation protection and which encloses the section of the capacitor winding located above the mounting flange.
- EP 1 284 484 B1 The control electrode shown on the conductor of the bushing serves for the homogenization of the electric field at the aforementioned connection point to the conductor of the high-voltage apparatus.
- the shielding can be as in EP 1 284 484 B1 and EP 1 771 689 B1 shown to be integrated in a porcelain insulator or made of silicone and on one fiber-reinforced plastic tube to be attached. But it can also - as in EP 1 417 689 B1 and WO 2009/053147 A1 described - be applied directly to the outer surface of the insulator receiving the capacitor winding, which extends between the mounting flange and a power connection of the bushing.
- WO 2004/001783 A1 discloses a control electrode designed as a molded plastic part, which can be detachably attached to an electrical device, such as typically a vacuum interrupter, by means of a snap-in connection.
- an electrical device such as typically a vacuum interrupter
- the material of the plastic molding is mixed with additives or the surface of the plastic molding is provided with a metallization. Information about the production of the plastic molded part or its deformation properties are not documented in this prior art.
- the object of the invention is to create an electrical component of the type mentioned at the outset which is simple to manufacture and at the same time is distinguished by great operational reliability.
- an electrical component for a high-voltage system which, in a coaxial arrangement, has a current conductor which extends along an axis and can be guided to high voltage potential, and a rigid insulating body which is fastened to the current conductor and comprises the current conductor and contains a solid polymer mass which is hardened by curing a preformed , flowable polymer mass is formed, a mounting flange attached to the outside of the insulating body, which can be guided to earth potential, and a hood-shaped control electrode which is connected in an electrically conductive manner to the current conductor and fastened to one end of the current conductor and which, when the system is in operation, generates the electrical field between the current conductor and the mounting flange controls.
- control electrode is non-detachably connected to the current conductor and has a dimensionally stable hood formed from the solid polymer mass during the preforming and curing of the flowable polymer mass and a coating of a hardened, electrically conductive lacquer is applied at least to the outwardly facing surface of the hood.
- control electrode is designed to be elastically deformable and has a hood made of an elastomeric plastic and a coating of a hardened, electrically conductive or electrically non-conductive lacquer is applied at least to the outwardly facing surface of the hood.
- control electrode according to the invention can be produced with little effort and integrated into the electrical component. This considerably simplifies the manufacture, assembly and maintenance of the electrical component in accordance with the two alternative solutions.
- a hardened lacquer layer applied to the outside of the hood increases the dielectric strength of the component and accordingly also the operational reliability.
- the insulating body and the control electrode are also produced by jointly preforming and curing the flowable polymer mass, typically in a casting mold. These two parts, which are important for the dielectric behavior of the component, therefore have largely identical material properties and thus contribute to increased operational reliability.
- control electrode can yield when there is an undesirable mechanical load, such as an impact. In this way, an unintentional and possibly not immediately recognizable damage to the control electrode, for example during transport or during assembly, during operation or during maintenance of the electrical component, is largely avoided. Therefore, the control electrode of the comparative example increases the operational safety of the electrical component according to the invention.
- the non-releasable connection can be embodied as an embedding in which one end of the current conductor carrying the control electrode is embedded in the hood produced by casting.
- the elastomeric plastic can be electrically conductive and contain at least one filler having electrically conductive particles.
- the elastomeric plastic can also be electrically non-conductive and the coating can be electrically conductive.
- the elastomeric plastic can contain silicone or EPDM.
- control electrode can be detachably connected to the current conductor and can advantageously be designed as a snap or screw connection.
- the hood can be non-detachably connected to the current conductor and can advantageously be designed as an adhesive connection or as an embedding in which an end of the current conductor carrying the control electrode is embedded in the hood which is produced by casting or shrinking.
- the hood and a shield applied to the insulating body can jointly contain an electrically non-conductive, elastomeric plastic, which is formed during the manufacture of the component by hardening a flowable starting mass introduced into a casting mold.
- a capacitor winding can be embedded in the solid polymer mass with capacitor coatings which are electrically insulated from one another and which are kept at a distance from one another in the radial direction by an insulating film wound around the axis or by several layers of a thread-wound winding body guided around the axis.
- the electrical component can be a bushing of the high-voltage system or a partition insulator of a gas-insulated and metal-encapsulated high-voltage system.
- the lower end 12 of the current conductor 10 which is generally in the form of a tube or a round rod, can be connected in an electrically conductive manner to one end of a current conductor arranged in the aforementioned insulating-filled metal housing. Its upper end 11 can be electrically conductively connected to an outdoor-insulated high-voltage conductor.
- the capacitor winding 40 has capacitor coatings 41 which are electrically insulated from one another and which are kept at a distance from one another in the radial direction.
- the insulating distance is achieved by means of an insulating foil 42 wound in the form of a spiral, which typically consists of paper and / or plastic, or by means of several layers of a thread-wound bobbin guided around the axis A.
- the capacitor winding 40 is used to control an electrical field, which is formed during the operation of the bushing between the current conductor 10, which is then at high voltage potential, and the mounting flange 30, which is then at the potential of the metal housing.
- the insulating film 42 and the capacitor coatings 41 of the capacitor winding 40 are embedded in a solid polymer mass 21 which generally contains filler and which is typically an epoxy filled with a mineral powder.
- the control electrode 50 has a hood 51 made of plastic. Out Fig. 2 it can be seen that at least on the upward, downward and outward-facing, that is, at least on the entire outer surface of the hood 51, a coating 52 of a hardened lacquer is applied.
- the control electrode 50 is located at the potential of the current conductor 10. This can be done on the one hand by an electrically conductive plastic forming the hood 51, for example by an electrically conductive particle such as graphite, metal. or metal oxide powder, filled polymer can be achieved. On the other hand, this can also be achieved in that the hardened lacquer forming the coating 52 is electrically conductive, regardless of whether the hood 51 is made of an electrically conductive or an electrically non-conductive plastic.
- the coating 52 made of the electrically conductive or electrically non-conductive lacquer smoothes unavoidable surface roughness of the hood 51.
- a particularly fine control of the electrically conductive field that occurs during operation of the high-voltage system is achieved, which between the control electrode 50 and the mounting flange 30, respectively. the metal housing connected to this flange in an electrically conductive manner.
- such a coating has a polymeric matrix which protects the surface of the control electrode 50 from mechanical damage, such as scratching, and at the same time considerably reduces the undesired emission of electrons from the control electrode 50. If the coating 52 is formed by the hardened conductive lacquer, electrically conductive particles of the lacquer which are at high voltage potential are embedded in the polymer matrix and the undesired emission of electrons is then considerably reduced.
- the hood is fastened in an axially symmetrical arrangement to the lower end of the current conductor 10 and, with its downwardly open, spherically curved wall, shields a current conductor connection with which the current conductor 10 with its lower end 12 connects to the end of the aforementioned current conductor, which is arranged in a metal housing filled with insulating material of the electrical apparatus is electrically connected.
- control electrode 50 is non-detachably connected to the current conductor 10.
- the non-releasable connection is embodied as an embedding in which the end 12 of the current conductor 10 carrying the control electrode 50 is embedded in the hood 51 produced by casting.
- the hood 51 is advantageously formed from an elastomeric plastic.
- the hood 51 can then be preformed by entering a flowable starting mass into a casting mold, which can also serve to manufacture the shield.
- a hood 51 and optionally also a shield 60 are made in the casting mold achieved from the elastomeric plastic.
- the shield 60 is then direct (in Fig. 1 not shown) poured onto the rigid insulating body 20. If the flowable starting mass has a plastic containing electrically conductive particles, the hood 51 can be used as a control electrode 50 after applying a coating 52 made of a hardened, electrically non-conductive lacquer to the outwardly facing surface of the hood.
- hood 51 and the shielding have been formed together in a casting mold, then the hood 51 must be provided with a coating 52 of a hardened, electrically conductive lacquer, at least on the outward-facing surface.
- a coating 52 of a hardened, electrically conductive lacquer at least on the outward-facing surface.
- the control electrode 50 can deform elastically. Damage to the control electrode during transport or during assembly of the component can thus be largely avoided.
- Suitable elastomers are primarily silicone and EPDM, but also elastomeric thermoplastics, such as thermoplastic polyurethane.
- the hood 51 can, however, also be formed in a casting mold which forms the rigid insulating body 20 and the hood 51, and optionally also the shield 60 at the same time, into which, for example, in WO 2009/053147 A1 described, a winding body containing the current conductor 10 and the capacitor winding 40 is arranged and is impregnated with the flowable polymer mass under vacuum.
- the flowable polymer mass is subsequently cured in the casting mold to form the solid polymer mass 21 and thus also to form the rigid insulating body 20 and the dimensionally stable hood 51, optionally also the shield 60.
- a seat for the mounting flange 30 is machined into the molded body formed in this way, containing the current conductor 10, the insulating body 20, the capacitor winding 40, the hood 51 and possibly also the shield 60, and the cover 52 is at least formed on the outer surface of the hood 51, about with the help of the conductive varnish.
- the connection between the lower end of the current conductor 12 and the control electrode 50 is detachable.
- the releasable connection is designed as a screw connection.
- the control electrode 50 has a thread 54 which is screwed onto a counter thread 14 which fits into the End 12 of the conductor is molded.
- the releasable connection can also be designed as a snap connection. It can then be seen that the control electrode 50 has an annular inner edge 53 which snaps into an annular groove 13 when the separately manufactured control electrode 50 is pushed on, which is formed in the lower end 12 of the current conductor.
- the current conductor 10 can be electrically conductively connected, for example by plugging, to a current conductor of the high-voltage system arranged in the metal encapsulation and guided along the axis A.
- a further control electrode can also be arranged on the right end, not shown, of the current conductor 10 led out of the pane 20. It can be seen that the control electrode 50 is connected to the current conductor 10 by snapping it on, that is to say releasably.
- the control electrode 50 can, however, also be connected to the current conductor 10 in a non-detachable manner.
- the hood 51 is then produced when the flowable polymer mass intended for producing the insulating body 20 is cast.
- the solid polymer mass 21 of the hood 51 then embeds the end 12 of the current conductor 10 to form the non-releasable connection.
- control electrode 50 can only on the lower resp. left 12 or at the top resp. right end 11 of the conductor 11 may be attached, or a control electrode may be attached to each of the two ends 11, 12.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
- Insulating Bodies (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12712246.3A EP2715743B1 (de) | 2011-05-27 | 2012-03-26 | Elektrische komponente für eine hochspannungsanlage |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11167911 | 2011-05-27 | ||
EP12712246.3A EP2715743B1 (de) | 2011-05-27 | 2012-03-26 | Elektrische komponente für eine hochspannungsanlage |
PCT/EP2012/055317 WO2012163561A1 (de) | 2011-05-27 | 2012-03-26 | Elektrische komponente für eine hochspannungsanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2715743A1 EP2715743A1 (de) | 2014-04-09 |
EP2715743B1 true EP2715743B1 (de) | 2020-03-04 |
Family
ID=45930663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12712246.3A Active EP2715743B1 (de) | 2011-05-27 | 2012-03-26 | Elektrische komponente für eine hochspannungsanlage |
Country Status (4)
Country | Link |
---|---|
US (1) | US20170104279A9 (zh) |
EP (1) | EP2715743B1 (zh) |
CN (1) | CN103563013B (zh) |
WO (1) | WO2012163561A1 (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2613686C2 (ru) | 2012-12-13 | 2017-03-21 | Абб Текнолоджи Лтд | Высоковольтное устройство и способ изготовления высоковольтного устройства |
CN104821214B (zh) * | 2015-04-14 | 2017-11-03 | 苏州翰为电气科技有限公司 | 一种液浸电力设备引出线用固体绝缘端子 |
CN104966549A (zh) * | 2015-07-06 | 2015-10-07 | 苏州翰为电气科技有限公司 | 一种环氧树脂干式套管 |
EP3402027B1 (en) * | 2017-05-08 | 2020-12-09 | ABB Power Grids Switzerland AG | High-voltage insulator arrangement for insulation of a conductor of a dc gas-insulated system, and gas-insulated system for dc operation comprising a high-voltage insulator arrangement |
CN111081493A (zh) * | 2020-01-16 | 2020-04-28 | 郑州畿安龙高压电气有限公司 | 一种动态电场均压电容套管 |
CN112271676B (zh) * | 2020-11-13 | 2024-05-24 | 中国电力工程顾问集团西南电力设计院有限公司 | 一种高海拔地区500千伏悬垂挂板及v型悬垂结构 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4283595A (en) * | 1976-06-25 | 1981-08-11 | Lackenbach, Lilling & Siegel | High voltage conductor terminal |
WO2006001724A1 (en) * | 2004-06-29 | 2006-01-05 | Abb Sp. Z O.O. | Capacitive insuling core of a high-voltage bushing |
EP2180485A1 (en) * | 2008-10-27 | 2010-04-28 | Abb Research Ltd. | High-voltage bushing |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2667532A (en) * | 1949-05-17 | 1954-01-26 | Gen Electric | High-voltage electrical insulating bushing |
US3659033A (en) * | 1970-10-28 | 1972-04-25 | Westinghouse Electric Corp | Electrical bushing having adjacent capacitor sections separated by axially continuous conductive layers, and including a cooling duct |
JPS5138000Y2 (zh) * | 1973-01-31 | 1976-09-17 | ||
JPS593818A (ja) * | 1982-06-29 | 1984-01-10 | 三菱電機株式会社 | 高圧ブツシングのシ−ルド |
US4584429A (en) * | 1983-03-21 | 1986-04-22 | Cooper Industries, Inc. | Electrical assembly including a metal enclosure and a high voltage bushing |
US4670625A (en) * | 1984-07-24 | 1987-06-02 | Wood Henry S | Electrical insulating bushing with a weather-resistant sheath |
JPS61106014U (zh) * | 1984-12-18 | 1986-07-05 | ||
FR2594607B1 (fr) * | 1986-02-14 | 1988-04-29 | Merlin Gerin | Poste blinde subdivise en compartiments etanches |
US6388197B1 (en) * | 2000-03-23 | 2002-05-14 | Hubbell Incorporated | Corona protection device of semiconductive rubber for polymer insulators |
DE50113402D1 (de) * | 2001-08-13 | 2008-01-31 | Abb Schweiz Ag | Verfahren zur Herstellung einer Hochspannungsdurchführung |
EP1284483A1 (de) | 2001-08-13 | 2003-02-19 | Micafil Ag | Hochspannungsdurchführung |
DE10229095B4 (de) * | 2002-06-25 | 2004-09-16 | Siemens Ag | Abschirmelektrode |
CN1540685A (zh) * | 2003-04-23 | 2004-10-27 | 阎中华 | 复合外套式避雷器 |
DE102004036301A1 (de) | 2004-07-27 | 2006-03-23 | Emerson Electric Gmbh & Co. Ohg | Kältemaschine und Verfahren zum Betreiben einer Kältemaschine |
EP1622173A1 (en) | 2004-07-28 | 2006-02-01 | Abb Research Ltd. | High-voltage bushing |
EP2053616A1 (en) | 2007-10-26 | 2009-04-29 | ABB Research Ltd. | High-voltage outdoor bushing |
CN101894638B (zh) * | 2010-07-19 | 2011-12-14 | 河南省德立泰高压电瓷电器有限公司 | 高压电站、电网及电气化铁路接触网用复合棒形绝缘子 |
CN201773679U (zh) * | 2010-08-12 | 2011-03-23 | 上海幸久电气成套设备有限公司 | 一种进线套管 |
US8759683B2 (en) * | 2011-07-15 | 2014-06-24 | Hubbell Incorporated | Spark-over prevention device for high-voltage bushing |
-
2012
- 2012-03-26 WO PCT/EP2012/055317 patent/WO2012163561A1/de active Application Filing
- 2012-03-26 EP EP12712246.3A patent/EP2715743B1/de active Active
- 2012-03-26 CN CN201280025791.2A patent/CN103563013B/zh active Active
-
2013
- 2013-11-26 US US14/090,509 patent/US20170104279A9/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4283595A (en) * | 1976-06-25 | 1981-08-11 | Lackenbach, Lilling & Siegel | High voltage conductor terminal |
WO2006001724A1 (en) * | 2004-06-29 | 2006-01-05 | Abb Sp. Z O.O. | Capacitive insuling core of a high-voltage bushing |
EP2180485A1 (en) * | 2008-10-27 | 2010-04-28 | Abb Research Ltd. | High-voltage bushing |
Also Published As
Publication number | Publication date |
---|---|
CN103563013A (zh) | 2014-02-05 |
US20170104279A9 (en) | 2017-04-13 |
US20140080356A1 (en) | 2014-03-20 |
WO2012163561A1 (de) | 2012-12-06 |
CN103563013B (zh) | 2016-01-20 |
EP2715743A1 (de) | 2014-04-09 |
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