EP2156444A1 - Überspannungsableiteranordnung - Google Patents
ÜberspannungsableiteranordnungInfo
- Publication number
- EP2156444A1 EP2156444A1 EP08718161A EP08718161A EP2156444A1 EP 2156444 A1 EP2156444 A1 EP 2156444A1 EP 08718161 A EP08718161 A EP 08718161A EP 08718161 A EP08718161 A EP 08718161A EP 2156444 A1 EP2156444 A1 EP 2156444A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- surge arrester
- varistor element
- arrester arrangement
- fluid
- 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.)
- Withdrawn
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; Arresters
Definitions
- the invention relates to a surge arrester arrangement comprising a leakage current path having a varistor element and a plug contact and having a housing which is spaced apart from the varistor element.
- Such a surge arrester arrangement is known for example from the patent Abstract of Japan 05159852 A. There, a surge arrester arrangement is described with a Ableitstrompfad.
- the leakage current path has a varistor element and a plug contact.
- Around the varistor element extends around a housing.
- a rubber body surrounds the varistor element. The case lies on the rubber body.
- the object is achieved in a Uberschreibsab- conductor arrangement of the type mentioned in that the varistor element is rewound from a fluid.
- Fluids allow to create an insulating section which is self-healing, that is, after electrical discharges recombine the discharge areas.
- the fluid is hardly adversely affected in its electrical properties.
- Optionally occurring decomposition products can be separated out of the fluid.
- Suitable fluids are, for example, insulating oils or insulating gases, such as sulfur hexafluoride, nitrogen or other suitable gases.
- the surge arrester arrangement has a certain elasticity in itself, since the fluid adapts to shape changes and ensures sufficient electrical strength. It can further be advantageously provided that the housing is fluid-tight.
- a fluid-tight housing makes it possible to prevent clogging of the fluid or to limit the volume provided for receiving the fluid.
- the varistor element extends along a longitudinal axis.
- the varistor element may be formed, for example, in one or more parts.
- symmetrical, in particular rotationally symmetrical varistor elements can be used as advantageous shapes, wherein an axis of symmetry extends parallel to the longitudinal axis.
- Design of the housing are for example rohrformige sections suitable, which accommodate the varistor element in its interior at least partially, in particular completely.
- the fluid-tight housing can be designed, for example, as Gusskorper or Presskorper.
- the plug contact has an insulating body, which closes the housing fluid-tight.
- the plug contact has an insulating body, which covers a Gehauseo réelle, such as a Rohro réelle and fluid-tight with the housing is connected.
- the Gehauseo réelle can be used, for example, to introduce the varistor element in the interior of the housing and make a positioning of the varistor element inside the housing by means of the plug contact.
- the Plug contact with its insulating the Varistorelement presses against a counter-surface.
- a ground contact of the leakage current path can be used as the counter-surface.
- a holding force to the varistor element in a simple manner.
- a closure of the Gehauseo réelle means of the insulating of the plug contact can be made and necessary for a closing contact force of the insulating against the housing can be used in addition to sitionieren the varistor element.
- a bracing device which braces independently of the plug contact part of the elements Varistorettis against each other and possibly holds the varistor element. Critical transition areas between the varistor element and, for example, firm Isolierstoffbrucken are avoided. This ensures a dielectric strength of the surge arrester arrangement over several years.
- a further advantageous embodiment can provide that the insulating body centered the surge arrester arrangement on a mating contact of the plug contact.
- the insulating body of the plug contact may, for example, have a substantially conical recess into which a shaped body of the mating contact can be introduced.
- the mating contact can, for example under nominal operating conditions of the surge arrester arrangement, carry an electrical potential which is different from a ground potential.
- a voltage-side connection of the varistor element of the surge arrester arrangement can be produced via the plug contact.
- a ground-side connection of the surge arrester arrangement is provided.
- a further advantageous embodiment can provide that the insulating body protrudes into the housing.
- the housing is able to protect the insulating body from forces that could act on him.
- the capsule housing can be formed from a correspondingly mechanically resistant material.
- the fluid within the housing is subjected to an increased pressure in relation to the surroundings.
- a gaseous fluid pressurization can have positive properties on the e- lectric strength of the fluid.
- a leak can be diagnosed relatively quickly by monitoring the pressure.
- the insulating body is part of a pressure-resistant barrier.
- a pressure-resistant barrier has the task of preventing a passage of a fluid into the surroundings of the surge arrester arrangement.
- the pressure-resistant barrier is part of an encapsulation, which is composed for example of different modules.
- Part of the enclosure may be, for example, the plug contact with insulating body and the housing.
- the barrier is embodied so solid that leakage of the fluid is prevented even when the fluid inside the enclosure is pressurized. The barrier stops the pressure difference between the inside and the outside of the encapsulation.
- a further advantageous embodiment can provide that the housing has at least one electrically conductive section, which leads to ground potential.
- a high compressive strength and a high mechanical strength against external forces which could act, for example, on the insulating body projecting into the interior of the housing or on a varistor element located inside the housing can be achieved, for example, by using electrically conductive sections which have, for example, metallic structures. ensured.
- the electrically conductive sections of the housing can also serve to shield electric fields.
- the housing is formed in the form of a metallic Gusskorpers.
- aluminum and other non-ferrous metals are suitable for shaping the housing by means of a casting process. Such cast housings have a comparatively low mass good mechanical stability and good tightness.
- the electrically conductive portion is part of the Ableitstrompfades.
- a plug contact with an insulating body was selected for contacting the voltage-side end of the varistor element, it is advantageous to electrically isolate the plug contact from the housing.
- an electrically conductive housing section in particular of a shell side formed of electrically conductive material housing, the ground-side end of the varistor element inside the housing with the electrically conductive Gehauseabites be contacted electrically conductive. So it is possible to use the housing as part of the leakage current path.
- a contact with ground potential can be made at almost any point of the housing, so that a flexible use of the surge arrester arrangement is made possible.
- the housing is equipped with a corresponding Stromtragfa- equipped so that overheating or destruction of the housing during a Ableitvorganges the surge arrester arrangement is prevented.
- a conductor strip, which is contacted on the ground side of the varistor element, of the leakage current path is guided in an electrically insulated manner through the housing.
- the varistor element of the surge arrester arrangement can be connected at its earth-side end via an electrical conductor with ground potential.
- the varistor element On the voltage side, for example at the end at which the plug contact is arranged, the varistor element can be acted upon by a potential that is different from ground potential.
- ground potential leading conductor through the housing it is possible to separate potentials from each other.
- the earth-side contacting of the leakage current path can also be selectively separated or restored outside the housing. This is particularly advantageous in order, for example, to carry out electrical testing work on the varistor element without having to intervene in the interior of the housing.
- a further advantageous embodiment can provide that the varistor element and the plug contact are held at opposite ends of the housing.
- varistor element and plug contact By holding varistor element and plug contact at different ends of the housing there is the possibility to dissolve an electrically conductive connection between the varistor element and the plug contact, without having to loosen varistor element and plug contact of the housing.
- connection between the varistor element and the plug contact a dome contact, which is closable and obvious.
- a flange opening which can be closed in a fluid-tight manner by means of a closure flap, is arranged on the housing, via which opening the interior of the housing can be interlocked.
- the varistor element and the plug-in contact are connected to the housing independently of one another in a rigid angle.
- Figure 1 shows a section through a surge arrester arrangement
- FIG. 2 shows a modification of the surge arrester arrangement shown in FIG.
- a surge arrester arrangement 1 shown schematically in the figure is aligned substantially symmetrically with respect to a longitudinal axis 2.
- the surge arrester arrangement 1 has a substantially tubular housing 3.
- the tubular housing 3 is formed of an electrically conductive material such as aluminum. However, other materials such. As steel used.
- the housing 3 can also be assembled from individual parts, which are connected, for example, by means of a welding process.
- the housing 3 is produced by means of a casting process. On the housing 3 and other flanges, fixtures, cross-sectional reductions, etc. may be provided as needed.
- the housing 3 is at its first frontal end provided with a Gehauseo réelle 4.
- the Gehauseo réelle 4 is closed by means of an insulating body 5 of a plug contact 6.
- a circumferential body edge of the insulating body 5 is flush on a flange surface which surrounds the housing opening 4.
- the insulating body 5 seals the housing opening 4 in a fluid-tight manner.
- the insulating body 5 is aligned coaxially with the longitudinal axis 2 and has a projecting into the interior of the housing 3 on the divergence.
- the Auswolbung is designed such that a conical Wolbungs Jardin arises.
- the plug contact 6 engages fluid-tightly through the insulating body 5.
- the limited by the insulating body 5 of the plug contact 6 volume of the housing 3 is filled with a fluid.
- a lying within the fluid part 6a of the plug contact 6 is contacted with a varistor element 7 electrically conductive.
- the varistor element 7 extends coaxially to the longitudinal axis 2 and is composed of a plurality of axially successive sub-elements.
- the multiple columns may extend symmetrically about the longitudinal axis 2.
- a ground potential leading ground contact 8 is arranged at the end remote from the first front end of the housing 3.
- the ground contact 8 is electrically connected to a closure cover 9 of the housing 3.
- the closure lid 9 is formed separately.
- the closure lid is integrally integrated into the housing 3.
- this can also be arranged on the shell side on the housing 3.
- the housing 3 acts as part of the discharge flow path.
- the varistor element 7 is clamped.
- the insulating body 5 is used, which is connected to the housing 3.
- the encapsulation is filled with a fluid.
- the fluid is, for example, a liquid or a gas, such as an insulating oil or sulfur hexafluoride or nitrogen.
- pressurization of the fluid is advantageous in order to improve the electrical insulation properties of the fluid.
- a mating contact 10 is provided for positioning the surge arrester arrangement 1 on a further assembly.
- the mating contact 10 is seated at a free end of an insulating pin 11 which is shaped identically to the conical shape of the curvature of the insulating body 5.
- the insulating pin 11 is essentially conical and fixed to a body edge 12 of the further module.
- the coping edge 12 serves as a mirror axis, behind which the insulating pin 11 together with mating contact 10 continues on the opposite side of the body edge 12 in mirror image.
- the mating contact 10 and the insulating pin 11 is symmetrical not only posted with respect to the longitudinal axis 2, but also mirrored on the body edge 12 continued.
- the modification of the surge arrester arrangement 1a has a housing 3a.
- the housing 3a is provided with a Flanscho réelle 3b.
- the Flanscho réelle 3b is closed by means of a lid 3c.
- About the Flanscho réelle 3b can be intervened in the interior of the housing 3a.
- the modification of the surge arrester arrangement Ia shown in FIG. 2 has a plug contact 6c.
- the insulating body 5b has a slightly different shape than the insulating body 5 known from FIG.
- the varistor element 7a of the modification of the surge arrester arrangement 1a is formed from a multiplicity of subelements arranged axially one behind the other.
- the partial elements are pressed against each other by means of a bracing device 13.
- the bracing device has a fitting element 14, which is pressed against a base plate by means of one or more tie rods 15 with the intermediate layer of the subelements.
- the varistor element 7a is fixed to the housing 3a.
- the base plate is designed such that it is an electrically insulating
- the Armaturkorper 14 acts as a field-controlling electrode.
- a dome contact 16 is provided for the voltage-side connection of the varistor element 7a with the plug contact 6c.
- the dome contact 16 can be turned on to produce a leakage current path or to interrupt the Ableitstrompfades. An access to the Kuppel.stuck 16 is possible via the Flanscho réelle 3b.
- a ground potential leading conductor train 17 is provided, which is electrically isolated via a passage 18 through the housing 3a hin tellgeschreibt. Outside the housing 3a, the earth potential leading conductor 17 is applied to earth potential. When using electrically conductive material for the housing 3a, this can also be subjected to ground potential.
- the lead-through 18 makes it possible, if necessary, to decouple the varistor element 7a outside the housing 3a from the ground potential, without having to cancel the electrical grounding of the housing 3a.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Gas-Insulated Switchgears (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710027411 DE102007027411A1 (de) | 2007-06-11 | 2007-06-11 | Überspannungsableiteranordnung |
| PCT/EP2008/053470 WO2008151857A1 (de) | 2007-06-11 | 2008-03-25 | Überspannungsableiteranordnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2156444A1 true EP2156444A1 (de) | 2010-02-24 |
Family
ID=39580597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08718161A Withdrawn EP2156444A1 (de) | 2007-06-11 | 2008-03-25 | Überspannungsableiteranordnung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2156444A1 (de) |
| DE (1) | DE102007027411A1 (de) |
| WO (1) | WO2008151857A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2600358B1 (de) | 2011-12-02 | 2014-04-30 | ABB Technology AG | Überspannungsableiter |
| EP2713375A1 (de) * | 2012-09-28 | 2014-04-02 | Siemens Aktiengesellschaft | Überspannungsableiter |
| DE102016203109A1 (de) * | 2016-02-26 | 2017-08-31 | Siemens Aktiengesellschaft | Überspannungsableiter mit Mitteln zum Messen transienter Überspannungen |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8531511U1 (de) * | 1985-11-05 | 1986-01-02 | Siemens AG, 1000 Berlin und 8000 München | Überspannungsableiter mit Steckanschlußteil für Mittelspannungsschaltanlagen |
| JPS63208202A (ja) * | 1987-02-25 | 1988-08-29 | 三菱電機株式会社 | 避雷装置 |
| JPH05159852A (ja) | 1991-12-03 | 1993-06-25 | Nissin Electric Co Ltd | プラグイン形避雷器 |
| JPH05159853A (ja) * | 1991-12-04 | 1993-06-25 | Ngk Spark Plug Co Ltd | スパークプラグ |
| DE19926950A1 (de) * | 1999-06-14 | 2000-12-21 | Abb Research Ltd | Kabelendgarnitur |
| DE19942633A1 (de) * | 1999-09-07 | 2001-03-08 | Abb Hochspannungstechnik Ag | Überspannungsableiter |
| ATE288127T1 (de) * | 2002-07-15 | 2005-02-15 | Abb Schweiz Ag | Steckbarer elektrischer apparat, insbesondere überspannungsableiter |
| EP1603140A1 (de) * | 2004-06-04 | 2005-12-07 | ABB Technology AG | Aktivteil für einen gekapselten Überspannungsableiter |
| EP1603141B1 (de) * | 2004-06-04 | 2016-08-24 | ABB Schweiz AG | Gasisolierter Überspannungsableiter |
-
2007
- 2007-06-11 DE DE200710027411 patent/DE102007027411A1/de not_active Withdrawn
-
2008
- 2008-03-25 EP EP08718161A patent/EP2156444A1/de not_active Withdrawn
- 2008-03-25 WO PCT/EP2008/053470 patent/WO2008151857A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008151857A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007027411A1 (de) | 2008-12-18 |
| WO2008151857A1 (de) | 2008-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20091110 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20100922 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20160727 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20161207 |