EP2812963B1 - Überspannungsableiter - Google Patents

Überspannungsableiter Download PDF

Info

Publication number
EP2812963B1
EP2812963B1 EP12805922.7A EP12805922A EP2812963B1 EP 2812963 B1 EP2812963 B1 EP 2812963B1 EP 12805922 A EP12805922 A EP 12805922A EP 2812963 B1 EP2812963 B1 EP 2812963B1
Authority
EP
European Patent Office
Prior art keywords
surge arrester
actuator
adjustment means
connection
arrester according
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.)
Not-in-force
Application number
EP12805922.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2812963A1 (de
Inventor
Jürgen SCHURWANZ
Jürgen PRÖPPER
Wolfgang Breithaupt
Jürgen Trinkwald
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.)
Obo Bettermann GmbH and Co KG
Original Assignee
Obo Bettermann GmbH and Co KG
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 Obo Bettermann GmbH and Co KG filed Critical Obo Bettermann GmbH and Co KG
Priority to SI201230605A priority Critical patent/SI2812963T1/sl
Publication of EP2812963A1 publication Critical patent/EP2812963A1/de
Application granted granted Critical
Publication of EP2812963B1 publication Critical patent/EP2812963B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure

Definitions

  • the invention relates to a surge arrester, which is connected between a phase conductor and an N conductor or PE conductor, with at least one spark gap and at least one further connected in series electrical component, as indicated in the preamble of claim 1.
  • Surge arresters are known in various designs. For example, from the DE 10 2010 021 155 A1 is a surge arrester with a spark gap and a further connected in series electrical component known. Such lightning current-carrying spark gaps are used to avoid damage as a result of a lightning strike or other overvoltage event. The spark gaps are used for transient equipotential bonding, whereby the subsequent follow-on current should also be deleted.
  • spark gap is defective in such a surge arrester, namely forms a short circuit
  • current is constantly flowing through the surge arrester, which is connected, for example, between the phase conductor and the PE conductor of a system to be protected, whereby elements of the surge arrester heat up as a result of the high-resistance short circuit ,
  • a surge arrester is indicated, on the one hand has a good response and good Reginastromlösch pipeline, but on the other hand should avoid damage to the surge arrester or adjacent equipment parts in the event of a short circuit of the spark gap.
  • an electrical conductor with an insulating material part surrounding this conductor is arranged between two electrodes of the overvoltage protection element. If the insulating part of a brief temperature load, as occurs in the event of an overvoltage event is applied, so holds the insulating component. At higher temperatures, which may result, for example, as a result of a short circuit, or with prolonged exposure to heat, the insulator part disintegrates or it becomes electrically conductive, so that then a conductive connection between the electrodes is made.
  • the flow of current through the surge arrester ensures that the electrical fuse connected in the circuit of the surge arrester triggers and disconnects the circuit so that excessive heating due to the short circuit of the spark gap is avoided.
  • the solution described in this document is based on the finding that, in the event of a short circuit, a significant heating of the surge arrester occurs and the heating of the surge arrester is used to realize a corresponding switching function.
  • the present invention seeks to provide a surge arrester generic type, which realizes a short circuit of the spark gap, a very fast separation of existing, for example, between phase conductor and PE conductor short-circuit without the increased temperature of the surge arrester is exploited.
  • the invention proposes that one of the connection components for the phase conductor or N conductor or PE conductor consists of two mutually electrically isolated, spaced-apart parts, which are in electrical connection with each other by a contact part, that the Contact part is associated with a mechanical adjusting means, which is suitable and intended to adjust the contact part of the connecting the two parts first layer in a connection interrupting the second layer, and that the adjusting means is adjustable by means of an actuator from the first to the second position which is triggered by that a short-circuit current flows via the surge arrester, wherein the first part of the two parts of the first connection component which are electrically insulated from each other is connected directly to phase, N or PE and the second of these parts of the first connection component is electrically connected to the first part via the contact part the second part is connected to the second terminal component by an electrical circuit consisting of a parallel connection of a slow fuse on the one hand and a resistor and the actuator on the other hand, and the slow fuse is dimensioned so that it withstands an over
  • one of the connection components for the phase conductor or for the N conductor or the PE conductor is realized from two parts which are electrically insulated from one another and optionally also spaced apart. These two parts are connected via a contact part with each other in electrically conductive connection.
  • the contact part in turn is combined with a mechanical adjusting means, which is suitable and intended to adjust the contact part from the basic position in which the two parts are electrically connected to each other in a breaker position in which the connection between the two parts is interrupted.
  • the adjusting means is adjusted for example by means of an actuator from the first to the second position and it is characterized triggerable that a short-circuit current flows through the surge arrester.
  • the second part of the first connection component is connected to the second connection component by an electrical circuit which consists of a parallel connection of an inert fuse on the one hand and a series resistor and the actuator on the other.
  • an electrical circuit which consists of a parallel connection of an inert fuse on the one hand and a series resistor and the actuator on the other.
  • the parallel circuit series resistors are connected in series.
  • the actuator is an electrically triggerable gas generator.
  • Such gas generators are known per se in the prior art, in particular in the safety equipment of automobiles, for example for the actuation of airbags or other safety-relevant equipment parts.
  • Such a gas generator is extremely compact, so it can be easily integrated into a surge arrester, on the other hand, the generatable by this gas volume is relatively large, so that it is sufficient to adjust the actuating means in the second position and the contact part in the interrupting second Able to adjust.
  • a preferred embodiment is seen in that the electrical circuit is constructed with the switching elements, switching paths and the actuator on a control board.
  • the entire electrical circuit is constructed on a control board, which has corresponding switching paths and which can be connected with corresponding connection elements to the relevant contact parts of the surge arrester.
  • the electrical circuit with the switching elements and the actuator is constructed on the control board.
  • the complete control board can be easily integrated into the surge arrester or in the housing, so that the assembly can be done in a simple manner and in a small footprint.
  • the actuator protrudes into a cavity of an insulating component which is arranged between the two mutually electrically isolated, spaced-apart parts, and which forms or receives the mechanical adjusting means in the form of a slide.
  • the actuator in the insulating component, for example at one end, the actuator preferably projects in the form of the gas generator.
  • the mechanical adjusting means is arranged in the form of a slider in the cavity of the insulating component. The slider is in triggering the actuator from the insulating component in the direction of the front of the mouth adjusted contact part, so that the contact part is adjusted from the connecting first position in the interrupting second position.
  • the contact part is a contact plate, which is clamped between the two spaced apart, isolated parts, or an electrically conductive wire, which is held on one of the parts and releasably secured to the other.
  • the contact plate with a first end portion on the first part of the first connection member is releasably clamped and is pivotally held with a second end portion on the second part of the first connection member.
  • This configuration serves, in particular, for the contact plate to virtually pivot about the second end region when the mechanical actuating means is triggered and to be removed from the first end region, so that a separation of the connection takes place while the contact plate is still held at the second end region on the connection component so that it is not lost and could lead to malfunction or the like within the overall structure of the surge arrester.
  • the actuator has at its end facing away from him actuable end of electrical connection conductors which are contacted with a circuit board.
  • the preferably designed as a gas generator actuator is equipped at one end with two electrical connection conductors that can be easily plugged into corresponding contacts of a board and contacted there, for example by soldering.
  • the actuator is provided with connecting conductors which protrude from the insulating component in the opposite direction to the actuating means and are contacted there with a circuit board and that the insulating member has or form a funnel-like receptacle for the actuator, which widens towards the actuating means ,
  • the assembly is facilitated, since the actuator can be inserted in a simple manner in the correct position in the funnel-like receptacle of the insulating, so that its connecting conductor protrude from a corresponding opening or perforations at the bottom of Isolierisoliles. It is thus simplifies the feeding and insertion of the actuator into the cavity of the insulating component and ensures a correct position position.
  • a preferred embodiment of the invention is that the actuating means acts indirectly via the contact part or directly in the second position on a signaling pin, which is guided displaceably in a housing part of the surge arrester and is adjustable by the actuating means from a normal position to a defect display position in the the signaling pin off the housing part optically recognizable protrudes and / or in which is switched by the signaling a pin installed in the housing part microswitch, which is in electrical communication with a remote signaling means.
  • the adjusting means is not only acted on the contact part, but in addition is acted on the contact part or by the actuating means itself on a signaling pin which is guided in a housing part of the surge arrester displaceable. In the normal position, the signaling pin is located, for example, within the housing. In the event of a defect, the signaling pin is pushed out of the housing part, so that it protrudes optically recognizable from the housing part.
  • the signaling pin cooperates with a microswitch installed in the housing part, which is switched by the signaling pin in the event of a fault, ie with an adjusted signaling pin and is in electrical connection with a remote signal display, so that alternatively or additionally a remote indication of the state of the surge arrester is made possible.
  • the adjusting means is guided in a guide which surrounds at least one shaft of the actuating means that the actuating means or has its shaft resilient leg portions which are surrounded in the normal position of the actuating means of parts of the guide and held unexpanded and are pushed out of the guide in the defect position, are spread and form a remindiolossperre for the actuating means, which is supported at the mouth of the guide ,
  • the slide which forms the mechanical actuating means, guided in a guide and surrounded by this.
  • the resilient leg portions of the slider or the shaft of the slider are held pressed together by the guide. If the slider is moved by the actuator in the defect position, it is shifted so far that the resilient leg parts are pushed out of the guide and are spread due to the material immanent suspension. As a result, a return movement lock is formed for the slide, since the spread leg portions are supported at the mouth of the guide. Bouncing of the slider is thus avoided and thus improves the quality of the surge arrester.
  • the component connected in series with the spark gap is at least one electrical element with two electrodes and granules of electrically conductive material arranged between them, wherein the element is surrounded by a heat-resistant insulating material envelope.
  • Such a component is in itself from the DE 10 2010 021 155 A1 known.
  • Such an element including spark gap may be provided in a singular form. But it is also possible to connect several such elements in series to make these surge arresters used for different voltage applications.
  • a surge arrester 1 is shown, which is connected between a phase conductor L and an N or PE conductor.
  • the phase conductor L and the N or PE conductor is shown only symbolically.
  • the surge arrester has at least one spark gap and at least one further electrical component connected in series therewith. These components are indicated schematically at 2.
  • the structure of such components is known per se. For example, this is on the DE 10 2010 021 155 A1 directed.
  • the connection component for the phase conductor L consists of two mutually electrically insulated, spaced-apart, electrically conductive parts 3,4, which are in electrically conductive connection with each other by a contact part 5.
  • the contact part 5 is associated with a mechanical adjusting means 6, which is suitable and intended, the contact part 5, from which the two parts 3,4 connecting the first layer, in particular in FIG. 2 is clearly visible in a connection interrupting second layer, the in FIG. 3 is particularly apparent, to adjust.
  • the mechanical adjusting means 6 is adjustable by means of an actuator 7 from the first to the second position. This actuator 7 can be activated and triggered in that, in the event of a defect in the spark gap, a short-circuit current flows via the surge arrester 1.
  • the first of the two mutually electrical parts 3 of the first connection component is connected directly to phase L and the second of these parts, namely the part 4, is electrically connected only via the contact part 5 with the first part 3.
  • the second part 4 is connected to the second connection part 8, which is connected in the exemplary embodiment of the N or PE conductor, by an electrical circuit whose circuit structure in FIG. 6 is shown.
  • This is a parallel circuit of an inert fuse 9 on the one hand and on the other hand, a series resistor 10 and the actuator 7.
  • these parallel circuit are still series resistors 11, 12 connected in series connection.
  • the sluggish fuse 9 is dimensioned so that it withstands an overvoltage event case, but disconnects in the event of a longer flow of a short-circuit current through the surge arrester.
  • the series resistor 10 is in front of the actuator 7 higher impedance than the fuse 9, so that in the normal case in the event of an overvoltage event the current flows through the fuse 9, while in the case of a defective spark gap, ie a short circuit of the spark gap, the current flows first through the fuse 9.
  • this current becomes so large that the sluggish fuse then disconnects.
  • a current in the actually high-impedance parallel branch with series resistor 10 and actuator 7 is driven.
  • the actuator 7 triggers after a few half-waves.
  • the adjusting means 6 is then adjusted to the second position and the contact part 5, from which the parts connecting the 3,4 position in the interrupting second position adjusted.
  • the actuator 7 is an electrically triggerable gas generator.
  • the electrical circuit as in FIG. 6 is shown, is constructed with the switching elements, switching paths and the actuator 7 on a control board 13, the example in Figure 5a to 5c is shown.
  • the connection contacts for connection to the corresponding parts 4 and 8 are formed by a spring contact 14 which is contacted with the part 8, and with a contact screw 15 which is contacted with the part 4.
  • the actuator 7 projects into a cavity 16 of an insulating component 17 which is arranged between the mutually spaced-apart parts 3, 4 which are electrically insulated from one another and which receives the mechanical actuating means 6 in the form of a slide.
  • the contact part 5 is a contact plate, which is preferably biased biased between the two spaced-apart parts 3,4 insulated from each other. With a first end portion 18 of this contact plate on the first part 3 of the first connection component is releasably clamped, for example, in a groove, while it is pivotally held with a second end portion 19 on the second part 4 of the first connection member, so that it in the interruption position of the part 3 is pivoted away, but is still held captive on the part 4.
  • the actuator 7 is provided with connecting conductors which protrude from the insulating member 17 opposite to the adjusting means 6 and contacted there with the circuit board 13, wherein the insulating member 17 has a funnel-like receptacle 20 for the actuator 7 or forms, which is the actuating means. 6 extended.
  • This serves for the simplified positioning and assembly of the actuator 7, which can be mounted, for example, with the adjusting means 6 as an auxiliary tool.
  • the adjusting means 6 can indirectly via the contact part 5 or directly, as shown in the embodiment, in the second position, for example according to FIG. 3 , on a signaling pin 21 acting, which is guided displaceably in a housing part 22 of the surge arrester 1 and by the adjusting means 6 from a normal position according to FIG. 2 in a defect display position according to FIG. 3 is adjustable. In this position, the front end of the signaling pin 21 protrudes from the housing part 22 optically recognizable.
  • the actuating means 6 has for actuating the signaling pin projections 23 which act on a wedge surface 24 of the signaling pin 21 to move it in the drawing upwards.
  • the displacement takes place against the force of a biasing spring 25, which is supported on the one hand on the housing part 22 and on the other hand on a shoulder 26 of the signaling pin.
  • the signaling pin 21 may additionally or alternatively also be combined with a microswitch installed in the housing part 22, so that the microswitch is actuated or switched when the signaling pin is in the defect display position, so that then via the microswitch and a connected control circuit in a further display device , For example, in a remote display, a signal is triggered to signal the deficiency state of the surge arrester 1.
  • the adjusting means 6 is guided as a slide in a guide 27 of the insulating member 17, said guide having a groove 28 which cooperates with a guide rib 29 of the slider (6), so that a mistake-free insertion is possible.
  • the guide 28 surrounds the shaft of the actuating means 6 designed as a slide.
  • This shaft has resilient leg portions 30 which are surrounded in the normal position of the actuating means 6 of parts of the guide 27 and are held unexpanded. In the defect position, these leg portions 30 are pushed out of the guide 27 and spread apart due to the material's own spring elasticity, so that a return movement lock is formed for the actuating means 6.
  • the component connected in series with the spark gap of the surge arrester 1 can be an electrical element with two electrodes and granules of electrically conductive material arranged between them, this element being surrounded by a heat-resistant insulating material sheath. But it can also be arranged in series several such elements, as for example, from the juxtaposition of FIGS. 1 to the exemplary embodiment FIGS. 2 and 3 is apparent.
  • the invention provides a highly functional means available to ensure an interruption of the possible current flow between the phase conductor and the neutral or PE conductor in case of a defect in the spark gap of the surge arrester 1.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Thermistors And Varistors (AREA)
EP12805922.7A 2012-02-08 2012-11-09 Überspannungsableiter Not-in-force EP2812963B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201230605A SI2812963T1 (sl) 2012-02-08 2012-11-09 Prenapetostni odvodnik

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012002444 2012-02-08
PCT/DE2012/001081 WO2013117176A1 (de) 2012-02-08 2012-11-09 Überspannungsableiter

Publications (2)

Publication Number Publication Date
EP2812963A1 EP2812963A1 (de) 2014-12-17
EP2812963B1 true EP2812963B1 (de) 2016-04-06

Family

ID=47429479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12805922.7A Not-in-force EP2812963B1 (de) 2012-02-08 2012-11-09 Überspannungsableiter

Country Status (5)

Country Link
EP (1) EP2812963B1 (pt)
CN (1) CN104081600B (pt)
IN (1) IN2014CN02196A (pt)
SI (1) SI2812963T1 (pt)
WO (1) WO2013117176A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014215279A1 (de) * 2014-08-04 2016-02-04 Phoenix Contact Gmbh & Co. Kg Schmelzsicherung für eine zu schützende Einrichtung
WO2019149385A1 (en) * 2018-01-30 2019-08-08 Abb Schweiz Ag Surge arrestor dimensioning in a dc power transmission system
DE102019210234B3 (de) 2019-05-09 2020-10-15 Dehn Se + Co Kg Blitzschutz-Funkenstreckenanordnung und Verfahren zum Betreiben einer Blitzschutz-Funkenstreckenanordnung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR812674A (fr) * 1936-01-21 1937-05-14 Alsthom Cgee Perfectionnement apporté aux parafoudres pour installations électriques
US4275432A (en) * 1978-02-16 1981-06-23 Tii Corporation Thermal switch short circuiting device for arrester systems
EP0046545A1 (de) * 1980-08-21 1982-03-03 BROWN, BOVERI & CIE Aktiengesellschaft Elektrische Installationseinrichtung
AT380351B (de) * 1984-04-03 1986-05-12 Cti Ges Zur Pruefung Elektrote Ueberspannungsableiter mit trennvorrichtung und blinkanzeige
FR2848353B1 (fr) * 2002-12-10 2005-06-17 Soule Protection Surtensions Dispositif de protection contre des surtensions
DE102008027589B4 (de) * 2007-10-15 2014-08-28 Dehn + Söhne Gmbh + Co. Kg Funkenstreckenanordnung mit einer Kurzschließeinrichtung
DE102008062491A1 (de) * 2008-12-16 2010-06-17 Epcos Ag Überspannungsableiter mit einer Kurzschlusseinrichtung
DE202009018086U1 (de) * 2009-11-23 2011-02-10 Phoenix Contact Gmbh & Co. Kg Überspannungsschutz mit einer pyrotechnischen Abtrennvorrichtung
DE102010021155B4 (de) 2010-05-21 2016-01-28 Obo Bettermann Gmbh & Co. Kg Überspannungsableiter

Also Published As

Publication number Publication date
WO2013117176A1 (de) 2013-08-15
CN104081600B (zh) 2016-05-18
SI2812963T1 (sl) 2016-07-29
EP2812963A1 (de) 2014-12-17
CN104081600A (zh) 2014-10-01
IN2014CN02196A (pt) 2015-05-29

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