WO2013178411A1 - Encapsulated surge protector having a central duct - Google Patents
Encapsulated surge protector having a central duct Download PDFInfo
- Publication number
- WO2013178411A1 WO2013178411A1 PCT/EP2013/058612 EP2013058612W WO2013178411A1 WO 2013178411 A1 WO2013178411 A1 WO 2013178411A1 EP 2013058612 W EP2013058612 W EP 2013058612W WO 2013178411 A1 WO2013178411 A1 WO 2013178411A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- surge arrester
- earth
- end fitting
- side end
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/123—Arrangements for improving potential distribution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
Definitions
- the invention relates to an encapsulated surge arrester according to the preamble of patent claim 1.
- Overvoltage arresters are protective systems, for example, for switchgear systems which, given overvoltages caused by lightning strikes or malfunctions of other subsystems, dissipate these overvoltages to ground and thus protect other components of the switchgear.
- Such a surge arrester comprises one or more cylindrical diverting elements, which have a varistor column made up of individual, likewise cylindrical varistor elements.
- Varistor elements are characterized by a voltage-dependent resistance. At low voltages these act as insulators. From a certain threshold voltage, which is material-dependent, they show a good conductivity.
- varistor elements are made of metal oxides such as zinc oxide.
- the diverter is limited at both ends of end ⁇ fittings that make electrical contact with the switchgear and the ground.
- the varistor column must be held together under pressure. This can be done by tension members, for example, ropes or rods are preferably clamped in glass fiber reinforced plastic in the end fittings under train.
- the Switzerlandele- elements surrounding it, the varistor and thus form a cage ⁇ fig about this.
- surge arresters For use in gas-insulated switchgear, surge arresters have a fluid-tight housing which surrounds one or more diverting elements.
- the housing is to He ⁇ increase the dielectric strength with a fluid, usually
- the housing is usually made of metal and is electrically grounded.
- An end fitting of the Conductive element is grounded via a guided through the housing contact.
- the other end of line is electrically connected via a high tension ⁇ voltage bushing with an on the outside of the casing contact which is used to connect to the switchgear.
- larger surge ⁇ Vietnamesesabieiter often have a tax cap which is slipped a unilaterally closed Zy ⁇ soothing about the end of the varistor at its high voltage end.
- the varistor with the end fittings and the ground side end fitting with the housing cover is electrically connected so that an electrical connection of the varistor to the housing.
- the connection of the varistor is then made to the earth. If occurring discharge processes are to be registered, the varistor column must be connected to a monitoring device arranged outside the fluid-tight housing. For this purpose, a separate from the housing grounding path of the varistor column is needed. To this interceptzustel ⁇ len, an electrical connection must be performed by the housing of the varistor column to a region outside of the housing electrically insulated contact.
- a surge arrester has a discharge column arranged in a grounded metallic housing.
- the derivation column comprises a diverting element, tension elements as well as an earth-side and a high-voltage side end fitting.
- the Ableit ⁇ element is clamped between the end fittings by means of the tension elements.
- the surge arrester has an electrical leadthrough with a current path insulated from the housing from the interior of the housing to the exterior of the housing.
- a longitudinal axis of the guide ⁇ coaxial with a longitudinal axis of the discharge element at ⁇ ordered and the discharge element via connecting means to carry out electrically connected.
- the connecting means form an electrical connection between the discharge element and the feedthrough, which is electrically insulated from the earth-side end fitting and which is guided through a passage opening in the earth-side end fitting.
- the surge arrester By the feedthrough is guided through a passage opening in the earth-side end fitting, no additional space is required next to the end fitting with a corresponding insulation distance for the implementation, the surge arrester can be made more compact. Also in the axial direction, this solution leads to smaller dimensions, since the space in the interior of the end fitting can be used for the implementation.
- a simple pre-assembly of the block of diverter, end fittings and tension members and the implementation is possible and the assembly can be done by the coaxial arrangement by simply mating, which simplifies assembly.
- the housing is formed fluid-tight and filled with an insulating gas.
- an insulating gas such as Iso ⁇ liergas Schwefelhexafluorid, can be constructed by the opposite air isolation distances very compact surge arrester.
- the housing has a housing cover, on which the earth-side end fitting is angeord ⁇ net.
- the bushing leads through the housing disgust.
- the housing cover preferably has a pressure compensation device for compensating an overpressure in the interior of the housing.
- the housing cover has a ver ⁇ closable inspection opening.
- An inspection opening allows easy opening of the housing for maintenance purposes.
- the housing cover has a filling and discharge device for insulating gas.
- the housing With the filling and discharge device, the housing, without being opened, are filled with insulating gas or the Iso ⁇ liergas be removed from the housing for maintenance purposes. This ensures that there is no insulating gas into the atmosphere entwei ⁇ chen can.
- the housing can be easily con ⁇ struieren.
- the connecting means have a Erd ⁇ contact and a resilient in the direction of the longitudinal axis of the implementation element.
- the earth contact has a flat bearing surface, on which the discharge element is supported, and a receptacle for the resilient element. This embodiment ensures a particularly reliable electrical connection.
- the discharge element is spaced by an electrically insulating spacer element of the earth-side end fitting.
- the diverter is thereby electrically isolated from the end fitting.
- the spacer element tubular ⁇ formed and arranged the resilient element at least partially within the spacer element. This makes a particularly compact design possible. So that insulating gas can penetrate into the tube interior of the spacer element, the spacer element may have openings in the tube wall.
- the recording of the ground contact as ringförmi ⁇ ger approach for guiding the spacer element and / or the resilient element is formed.
- the recording of the ground contact as ringförmi ⁇ ger approach for guiding the spacer element and / or the resilient element is formed.
- the earth-side end fitting is formed by the housing cover.
- the tension elements of the Ableit yarn are anchored on the ground side directly in the housing cover and thus fix the discharge on the housing cover.
- the housing cover thus forms the earth-side end fitting, which is particularly material-efficient ⁇ .
- FIG. 1 shows a perspective sectional view of a surge arrester according to the invention
- FIG. 3 shows a perspective sectional view of the earth-side end of the active part of a surge arrester according to the invention
- FIG. 4 shows an alternative embodiment of a surge arrester according to Inventive ⁇ . Corresponding parts are provided in all figures with the same reference numerals.
- a diverting element 2 is constructed from a plurality of columnar varistor elements and is clamped between two end fittings 5, one on the earth side and one on the high side, of which only the earth side is shown here, by means of tension elements 7, of which only one is shown here.
- the tension elements 7 are arranged parallel to the longitudinal axis 30 of the discharge element 2, and vice ⁇ ben this in the radial direction.
- the tension elements 7 are frequently pressed from glass fiber reinforced plastic and with fixing bushes 8, the up crimped onto the tension elements 7 or glued, anchored in the Endarmatu ⁇ ren.
- the tension elements 7 are fastened in an end fitting 5 in a similar manner.
- a slices ⁇ shaped ground contact 3 is arranged.
- the spacer element 17 immersed in the axial direction in a circular opening 23 in the end fitting 5 and is based on a radial projection 24 in this opening 23 from.
- the spacer 17 is made of a shape and temperature-resistant electrically insulating material and in particular has a high bending strength. Often, a reinforced, in particular ⁇ sondere a glass fiber reinforced plastic is used here. DA by that the spacer element 17 is made of an electrically iso ⁇ lierenden material, the diverter 2 is ge ⁇ gen the ground side end fitting 5 is electrically isolated. The Erd ⁇ contact 3 has on its the discharge element 2 facing away End face on an annular projection 21. This has an outer diameter which corresponds to the inner diameter of the spacer element 17, so that the radially outer ⁇ de side of the projection 21 serves as a guide for the spacer element 17.
- Figure 1 also shows the ground-side housing wall of the hous ⁇ ses, which is formed by a housing cover 4.
- Feedthrough 10 is passed through an opening in the housing cover 4.
- the implementation 10 has an insulating ⁇ pipe 13, an outer insulating bush 12, an inner Isolierbu ⁇ ches 14 and a lead-through conductor 11.
- the insulating tube is first introduced into the Publ ⁇ voltage of the housing cover 4. 13
- the insulating tube 13 protrudes on both sides out of the opening.
- the inner insulating bush 14 is now placed on the In ⁇ nenseite of the housing cover 4.
- This is also tubular and has an inner diameter which corresponds to the outer diameter of the insulating tube 13.
- the insulating bush 14 stands in the axial direction over the housing-internal end of the insulating tube 13 via.
- Insulating tube 13 and inner insulating bushing 14 are arranged coaxially to the longitudinal axis 30.
- an outer insulating bushing 12 is placed on the housing-side end of the insulating tube 13.
- Externa ⁇ ßere insulating bushing 12 in this case has an annular recess 29 which receives the housing exterior side end of the insulating tube.
- An annular projection 28 of the outer insulating sleeve 12 protrudes on the radial inner side of the insulating tube 13 in the axial direction into this.
- a feedthrough conductor 11, shown here as a metal bolt, is then guided from the outside of the housing through the outer insulating bushing 12, through the insulating tube 13 to the inside of the housing.
- the GE- koruseinnen workede end of the feedthrough conductor 11 is there ⁇ over the inner insulating bushing 14 and projects into the Ge ⁇ housing.
- a stop for example a nut, on the housing-outer end of the bushing conductor 11 limits its penetration depth.
- a washer 15 is placed, which rests on the inner insulating bushing 14 and is then fixed with a nut 16.
- the outer insulating bushing 12 has at its end faces seals 22, such as O-rings, on which the outer insulating bush 12 against the Ge ⁇ housing, here against the housing cover 4, and seal against the feedthrough 11.
- the passage 10 thus constitutes a gas-tight electrical connection from the inside of the housing to the outside of the housing, which is electrically insulated from the housing.
- Figure 2 shows a Genzousede ⁇ ckel 4 with such a fully assembled implementation 10th
- FIG. 1 shows the housing cover 4 with feedthrough 10 and active part 18 in the assembled state.
- the end fitting 5 is fastened to the housing cover 4 by means of screws 6 be ⁇ .
- the inner insulating sleeve 14 with the housing inner end of the through-conductor 11 protrudes at least partially ⁇ , in the spacer element 17 inside.
- Erdkon ⁇ tact 3 and resilient element 9 thus represent connection ⁇ medium, which electrically connect the diverter 2 with the bushing 10.
- the radial inner side of the projection 21 of the earth contact 3 provides a receptacle for the federelasti ⁇ cal element 9, which is guided and centered by this recording. So that insulating gas can penetrate into the interior of the distance ⁇ element 17, openings 20 are provided in the wall of the spacer element 17.
- An electrical current path now leads from the diverter 2 via the ground contact 3, the resilient element 9, washer 15, nut 16 and feedthrough 11 on the outside of the housing. The- This current path leads electrically against the end fitting 5 and the housing isolated through the end fitting 5 and through the housing wall, in this case the housing cover 4.
- a erfindungsge ⁇ rectly surge arrester 1 may have a housing 18 in a plurality of active parts.
- Each active part 18 is then an egg ⁇ gene implementation 10, which is arranged coaxially with the diverting element 2 of the respective active part 18, respectively.
- FIG. 4 shows further embodiments of the invention.
- the earth-side end fitting is formed by the housing cover 4 ge ⁇ .
- the tension elements 7 are sen by the Befest Trentsbuch- 8 directly on the housing cover 4 is attached, which thus forms the erd ⁇ side end fitting.
- the housing cover 4 closes off the housing 19 on an end face. Seals 32 provides leis ⁇ th while gas leaks.
- Each active part 18 is assigned its own feedthrough 10.
- the two active parts 18 have a common earth-side end fitting, which is provided here by the housing cover 4.
- the housing cover 4 also has a pressure compensation device 25.
- this pressure compensation device 25 is a rupture disk 26 covers an annular opening in Gezzau ⁇ 's lid. 4
- the rupture disk 26 is fixed on the inside of the housing ⁇ with an annular flange 31. Seals 33 seal the rupture disk 26 against the housing cover 4 in a gastight manner. If an overpressure arises in the housing 19, the rupture disk 26 bursts and releases the excess pressure to the outside, thus preventing damage to the housing 19. From a ⁇ blasschute 27 on the outside of the opening deflects the flowing out ⁇ gases in a desired direction.
- the housing cover 4 may have a filling and discharge device for insulating gas and / or a revision opening.
- the filling and discharge device for insulating gas serves to insulating gas, For example, sulfur hexafluoride, rid ⁇ fill in the housing 19 or discharge from the housing.
- the filling and drain ⁇ device is designed so that no insulating gas can escape uncontrolled.
- the inspection opening serves, for example, to assembly, maintenance or Kontrollzwe ⁇ blocks to get to elements inside the housing 19 without having to disassemble them.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Gas-Insulated Switchgears (AREA)
- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380028701.XA CN104350553B (en) | 2012-05-30 | 2013-04-25 | Packaged type discharge device for overvoltage protection with center sleeve |
KR1020147033168A KR101674785B1 (en) | 2012-05-30 | 2013-04-25 | Encapsulated surge protector having a central duct |
JP2015514395A JP6113274B2 (en) | 2012-05-30 | 2013-04-25 | Encapsulated surge arrester with center bushing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12170022.3A EP2669903B1 (en) | 2012-05-30 | 2012-05-30 | Enclosed surge absorber with central feedthrough |
EP12170022.3 | 2012-05-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013178411A1 true WO2013178411A1 (en) | 2013-12-05 |
Family
ID=48326270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/058612 WO2013178411A1 (en) | 2012-05-30 | 2013-04-25 | Encapsulated surge protector having a central duct |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2669903B1 (en) |
JP (1) | JP6113274B2 (en) |
KR (1) | KR101674785B1 (en) |
CN (1) | CN104350553B (en) |
WO (1) | WO2013178411A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT14491U1 (en) * | 2014-02-20 | 2015-12-15 | Wopfinger Baustoffindustrie Gmbh | audit module |
DE102017203657A1 (en) * | 2017-03-07 | 2018-09-13 | Siemens Aktiengesellschaft | Surge arresters and method of manufacturing a surge arrester |
DE102017216024A1 (en) * | 2017-09-12 | 2019-03-14 | Siemens Aktiengesellschaft | Surge arresters |
AT523645B1 (en) * | 2020-04-06 | 2021-10-15 | Avl List Gmbh | Adapter arrangement and component assembly |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4015228A (en) * | 1974-06-10 | 1977-03-29 | Matsushita Electric Industrial Co., Ltd. | Surge absorber |
EP0061990A1 (en) * | 1981-03-26 | 1982-10-06 | Siemens Aktiengesellschaft | Surge arrester comprising shielding means surrounding a column of arrester means |
EP1681686A1 (en) * | 2005-01-12 | 2006-07-19 | LS Cable Ltd. | PTC current limiting device having molding part made of insulating material |
DE102011077394A1 (en) | 2011-06-10 | 2012-12-13 | Siemens Aktiengesellschaft | Surge arresters |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06260305A (en) * | 1993-03-08 | 1994-09-16 | Fuji Electric Co Ltd | Current-terminal leading-out structure of lightning arrester |
WO1997028591A1 (en) * | 1996-01-31 | 1997-08-07 | Siemens Aktiengesellschaft | Metal-encased switchgear |
DE10000617A1 (en) * | 2000-01-10 | 2001-07-12 | Abb Hochspannungstechnik Ag | Surge arresters |
KR100697919B1 (en) * | 2005-01-12 | 2007-03-20 | 엘에스전선 주식회사 | PTC current limiting device having multi insulator |
KR100697917B1 (en) * | 2005-01-12 | 2007-03-20 | 엘에스전선 주식회사 | PTC current limiting device |
EP2124305A1 (en) * | 2007-01-22 | 2009-11-25 | Swcc Showa Cable Systems Co., Ltd. | Arrestor |
JP4809379B2 (en) * | 2007-01-22 | 2011-11-09 | 昭和電線ケーブルシステム株式会社 | Arrester and mounting area of arrester |
JP2010004656A (en) * | 2008-06-20 | 2010-01-07 | Mitsubishi Electric Corp | Bursting plate, bursting apparatus and gas-insulated switching apparatus using the bursting plate |
-
2012
- 2012-05-30 EP EP12170022.3A patent/EP2669903B1/en active Active
-
2013
- 2013-04-25 KR KR1020147033168A patent/KR101674785B1/en active IP Right Grant
- 2013-04-25 JP JP2015514395A patent/JP6113274B2/en active Active
- 2013-04-25 WO PCT/EP2013/058612 patent/WO2013178411A1/en active Application Filing
- 2013-04-25 CN CN201380028701.XA patent/CN104350553B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4015228A (en) * | 1974-06-10 | 1977-03-29 | Matsushita Electric Industrial Co., Ltd. | Surge absorber |
EP0061990A1 (en) * | 1981-03-26 | 1982-10-06 | Siemens Aktiengesellschaft | Surge arrester comprising shielding means surrounding a column of arrester means |
EP1681686A1 (en) * | 2005-01-12 | 2006-07-19 | LS Cable Ltd. | PTC current limiting device having molding part made of insulating material |
DE102011077394A1 (en) | 2011-06-10 | 2012-12-13 | Siemens Aktiengesellschaft | Surge arresters |
Also Published As
Publication number | Publication date |
---|---|
EP2669903A1 (en) | 2013-12-04 |
CN104350553B (en) | 2017-09-29 |
KR101674785B1 (en) | 2016-11-09 |
CN104350553A (en) | 2015-02-11 |
EP2669903B1 (en) | 2018-09-12 |
JP2015524242A (en) | 2015-08-20 |
KR20150004407A (en) | 2015-01-12 |
JP6113274B2 (en) | 2017-04-12 |
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