EP2201654A1 - Spark gap arrangement with a short-circuiting device - Google Patents
Spark gap arrangement with a short-circuiting deviceInfo
- Publication number
- EP2201654A1 EP2201654A1 EP08786657A EP08786657A EP2201654A1 EP 2201654 A1 EP2201654 A1 EP 2201654A1 EP 08786657 A EP08786657 A EP 08786657A EP 08786657 A EP08786657 A EP 08786657A EP 2201654 A1 EP2201654 A1 EP 2201654A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- short
- arrangement according
- circuiting
- fuse
- cavity
- 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.)
- Granted
Links
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 spark gap arrangement with a short-circuiting device, comprising two opposite, arranged in a pressure-resistant housing main electrodes, which are in each case in electrical connection with an external connection, according to the preamble of patent claim 1.
- an overvoltage arrester with a central electrode and at least one outer electrode is previously known, in which an electrically conductive spring clip is attached to the center console and exerts a spring force on the outer electrode. Between the spring clip and the outer electrode, an electrical component is arranged, which is not conductive at the ignition voltage of the surge arrester and which generates heat when current flows.
- the spring clip abuts against an electrically conductive contact element, which is attached by means of a fusible mass to a spacer element and spaced from the outer electrode. With molten mass, the contact element can be pressed by the spring clip on the outer electrode, so that a trigger mechanism is formed.
- the insulation required in the normal operation of the arrester between the spring clip and the outer electrode is effected by spacing the contact element from the outer electrode by means of the spacer element.
- the fusible mass is only required to attach the contact element to the spacer element, and therefore may be provided in a small amount, which ensures that the contact element can be held by the spacer element.
- the current carrying capacity of the short-circuiter according to EP 1 407 460 A2 is limited due to the design and the materials used there.
- the reaction of the short-circuiter is greatly delayed by the necessary heating of the entire arrester.
- Due to the external attachment of the short-circuiter creates an increased space requirement and in addition, a possible sparking in the outdoor area when responding be critical of the short circuiter.
- the prior art arrangement is a parallel connection of two spark gaps, namely Gasabieiter in combination with a separation distance of the short circuiter.
- EP 0 603 428 A1 discloses a gas discharge arrester which has a short-circuiting heater reacting outside of the discharge area. This short-circuiter and the gas discharge arrester are in contrast to the EP 1 407 460 A2 in an additional housing. Due to this higher complexity, the danger to the environment can be minimized in the event of a malfunction of the arrangement, but a corresponding space requirement is necessary. In addition, due to the additional mass, the reaction time increases until the response of the short-circuiter. An effective coordination of the safety function on the performance of the spark gap used is so difficult.
- the spark gap according to DE 100 25 239 A1 has a short circuiter integrated within the flameproof spark gap housing. This short circuiter becomes active at high pressure development within the spark gap. A reliable protection against a thermal overload of the spark gap with internal or even external causes is not possible with this solution.
- thermal separation For special applications of spark gaps, it is necessary that the devices used in a defined state short circuit or idle are transferred.
- a typical example of such a fail-safe behavior is the possibility of thermal separation, as they are widely used in varistors overvoltage arresters.
- the thermally sensitive separating device separates the concerned device from the network, thus preventing a momentous destruction.
- back-up fuses such as those used in arresters with spark gaps, are aimed at. In the event that the arrester in question is not able to automatically interrupt the follow-on current, this takes over the associated back-up fuse and disconnects the arrester from the mains.
- this fail-safe behavior can not be easily achieved by switching off.
- This can be z. B. caused by supply networks in which the operating current is almost equal to the short-circuit current. Such behavior is present in emergency generators or in photovoltaic systems.
- the short-circuiting device should be thermally, namely triggered by internal or external heating.
- the design to be stated should allow an easy adjustment of the triggering temperature and the tripping time to different problems depending on the application of the spark gap arrangement.
- the short-circuiter according to the invention comprising a conductive short-circuiting element, responds to at least one or two or more response temperatures and, in one embodiment, may also be selectively adjusted to overcurrents.
- the overcurrents can z. B. within a trigger unit, a parallel control unit or a parallel overvoltage protection flow.
- the overcurrent function can also be used for a be used externally triggered short circuit of the spark gap. This is z. B. for an additional protection function regardless of the overvoltage protection function of the unit makes sense.
- a cavity is provided in at least one of the main electrodes.
- This cavity accommodates a movable, conductive short-circuiting element, wherein the short-circuiting element has a geometric shape such that the distance between the main electrodes can be safely bridged.
- the short-circuiting element is subjected to a biasing force, which is released under thermal or overcurrent load.
- This solution has the advantage that the volume of the spark gap does not have to be increased. There are no additional connections necessary in addition to the connections of the spark gap. The performance of the short-circuiter is limited only by the connection cross-section of the spark gap. The short-circuiter is in the proposed solution within the pressure-resistant encapsulation of the spark gap and thus represents no external security risk.
- the response of the short-circuiter can be easily adjusted for different spark gaps and overload cases, for which purpose the response temperature and the response delay with respect to release of the biasing force is variable.
- the short-circuiting element is mounted in the cavity in fit and it is the biasing force generated by a spring element.
- the biasing force of the spring element is adjustable.
- a through hole may be provided in the main electrode receiving the short-circuiting member.
- the short-circuiting element is held in or on the cavity by means of a temperature-sensitive substance or such an element. If the temperature in the vicinity of the short-circuiting element exceeds the melting point of the temperature-sensitive substance, then the movement of the short-circuiting element is made possible under the effect of the now released biasing force with the result of contact bridging between the two main electrodes of the spark gap arrangement.
- the temperature-sensitive substance may be in the fitting space and is preferably in close thermal contact with the corresponding main electrode.
- the through hole may have an adjusting screw, which acts on the spring element, wherein the spring element between the short-closing element and the screw is, for the purpose of being able to vary the biasing force of the spring depending on the application case also externally.
- the short-circuiting element may have at least one mandrel at its end oriented toward the counter-main electrode, which can penetrate an insulation layer or insulation film located on the counter-main electrode.
- the biasing force can be released by loosening or severing a fuse fusion conductor.
- One end of the fuse fusible conductor communicates with an auxiliary terminal insulated from the respective main electrode, the other end being contacted with the main electrode via the short-circuiting member to conduct a tripping current.
- the fuse fuse is attached to the temperature-sensitive solder on the short-circuiting element and / or the auxiliary connection.
- the fuse melt conductor is located inside a prestressed or prestressable helical compression spring.
- the fuse conductor is also arranged in a through hole of the main electrode, wherein the through hole adjoins the cavity or is part of the cavity in the corresponding main electrode.
- solder attachment points of the fuse fuse may have different temperature sensitivity, i. H. have a different melting point.
- a contact shoulder or a contact ring in or at the cavity, preferably at its end facing the arc combustion chamber, may be provided in the exit region of the short-closing element.
- At least the main electrodes are rotationally symmetrical.
- one of the main electrodes have a pot shape, wherein the opposite main electrode extends into the interior of the pot.
- FIG. 1 shows a longitudinal section through a first embodiment of a spark gap arrangement with short-circuiting device, wherein the short-circuiting element is acted upon by an adjustable spring biasing force;
- FIG. 2 shows an embodiment of a spark gap arrangement with a short-circuiting device in longitudinal section, wherein the movable short-circuiting element is located in a cavity of a quasi-inner main electrode;
- FIG. 3 shows an embodiment of a spark gap arrangement with a short-circuiting device in longitudinal section, wherein the short-circuiting element is held by a fuse fuse and an auxiliary connection is present;
- Fig. 4 is a view similar to that of FIG. 3, but with the possibility of adjusting the spring bias of a located in a through hole helical compression spring;
- FIG. 8a is an illustration with the possibility of separating the mechanical connection and the electrical current flow
- Fig. 8b is an illustration of an alternative way to realize the decoupling
- the exemplary embodiments shown have in common that within at least one main electrode, a displaceable part of the electrode or another electrically conductive part is introduced, which upon heating of the outer environment of the spark gap, when heating the main electrodes or in intense arc action in the arc space of the spark gap by its movement to the counter electrode short circuits the entire spark gap in the interior of the flameproof enclosure.
- the volume of the spark gap does not have to be increased. There are no additional connections necessary in addition to the connections of the spark gap.
- the performance of the short-circuiting device is limited only by the connection cross section of the spark gap. There is also the short-circuiter inside the flameproof enclosure and thus does not pose a security risk.
- the embodiments of FIGS. 3 and 4 solve the task of creating a short circuiter, which in addition to the purely thermal tripping function by overcurrents in a H ilfs - or parallel path of the arrester monitors or can be specifically triggered in an external fault.
- Fig. 1 shows an exemplary embodiment of a triggerable lightning current carrying spark gap, which can be used as N / PE or spark gap.
- the invention is not limited to spark gaps, but can also be used in spark gaps for network applications.
- the invention is not limited to spark gaps with additional trigger electrodes, but can also be used easily for simple, non-triggerable spark gaps.
- the spark gaps shown have two outer terminals 1, a pressure-resistant, preferably metallic shell 2, at least one insulating bushing 3 and two opposing main electrodes 4a, 4b.
- the spark gap by means of a third electrode 5, z. B. be triggered via the jacket 2.
- the contacting of the auxiliary electrode 5 can also be carried out by an insulated from the jacket 2 implementation.
- the electrically conductive short-circuiting element 6 bridges after tripping the distance between the two main electrodes 4a, 4b in an electrically conductive function.
- the short-circuiting element 6 is fixed in retirement with the aid of a temperature-sensitive substance 7 on or in the electrode 4b.
- temperature-sensitive substance 7 it is possible to use both solders, waxes, polymers, adhesives and the like with a melting point or melting range which is as defined as possible.
- bimetals or shape memory alloys can be used to block the spring biasing force until it reaches a certain temperature.
- the biasing force is generated or varied by a spring 8 in the simplest manner in the attachment of the spark gap by means of a screw 9.
- the short-circuiting element 6 is moved from the illustrated rest position by the spring into the end position shown in dashed lines (see FIG. 1). In this way, the short-circuiting element 6 is connected over a large area with the counter electrode 4a.
- the electrical connection of the short-circuiting element 6 based on the main electrode 4b may already exist prior to triggering via the fastening means or the substance 7, but also only after the beginning of the movement z. B. be realized by positive locking and / or traction.
- the contact area between the short-circuiting element 6 and the main electrode 4b corresponds at least to the contact surface between the short-circuiting element 6 and the counterelectrode 4a. Both contact surfaces are preferably larger than the connection cross section of the spark gap.
- an embodiment with a solder joint as substance 7 between the electrode 4b and the short-circuiter 6 is preferred, wherein the large-area contact between the two parts 4b and 6 in the short-circuit position can be realized via a close fit between these parts ,
- the fit is preferably carried out in an axial region which is as far away as possible from the arc chamber, ie, away from the arc combustion chamber.
- these coaxial protective walls 14 can also support the guidance of the short-circuiting element 6 during its movement.
- the behavior of the short-circuiting element 6 can be influenced and varied in addition to the control of the response via the melting or reaction temperature of the substance 7 by further measures.
- the positioning of the temperature-sensitive attachment as close as possible to the arc furnace or in the direct area of action of the arc can be used for a rapid release of the short-circuiter both in pulse as well as longer lasting fault currents.
- a heat accumulation in the region of the substance 7 can be selectively generated, whereby a faster response is effected.
- the heat capacity of the parts can be specifically influenced by the geometry and the material selection.
- the heat capacity of the actual short-circuiting element 6 is also taken into account if the attachment is to be triggered exclusively via the heat in the main electrode 4b.
- the heating of the attachment via the substance 7 can also be effected by heating the short-circuiting element 6.
- the mass, the materials and the geometries of the main electrode 4b, the short-circuiting element 6, its attachment and the connection 1 are in addition to the positioning of the substance 7 and the response temperature thus numerous options available to the response of the short circuit to the application and to adjust possible hazards.
- the different behavior of the arc within the spark gap can be used. If the short-circuiting element is not triggered by impulsive loads or only under extreme loads, but is released as quickly as possible in the case of small and long-lasting fault currents, then the migration behavior of the arc can be used for longer errors. While the arc predominates at momentum loading only in the region of its ignition, ie in the vicinity of the trigger electrode 5, the movement of the long-lasting fault current in the direction of the substance 7 can be initiated. As a result, the behavior based on the release of the movement of the short-circuiting element 6 can be designed differently even with the same power sales.
- the arc can also be directed directly onto the short-circuiting element 6 in order to effect a faster response.
- FIG. 2 shows an embodiment of a spark gap which is similar to the basic structure of those already shown in FIG. 1 has been shown and described.
- the short-circuiting element 6 is located here within the main electrode 4a.
- the fixing substance 7 is heated almost directly here even with pulsed loads.
- the heat input of the arc root point acts directly on the temperature-sensitive part 7 of the short-circuiting element. 6
- the different heating of the anode or of the cathode can be utilized by the corresponding connection of the electrode 4a. This thus allows an almost instantaneous reaching the response temperature of the substance or the part 7 at a defined load on the spark gap.
- the Fig. 2 also shows a design possibility of the short-closing element 6, wherein this is additionally provided with a mandrel 13.
- a mandrel 13 With the help of the releasable force of the spring 8 can in this embodiment, an isolation distance, for. B. a film 12 are destroyed, the z. B. is located on the surface of the opposite main electrode 4b, so that then sets the desired short circuit.
- FIGS. 1 and 2 are based, for example, on an axial direction of movement of the short-circuiter 6, short-circuiters with a radial direction of movement in the sense of the invention are also possible.
- the short circuit can also be made directly to the sheath 2 of the spark gap.
- FIGS. 1 and 2 show short-circuiters which forcibly require heating in the region of the substance or of the part 7 until reaching the response temperature. This heating is caused by the arc or leakage currents within the spark gap or by the heating of the spark gap from the outside, z. B. causes at elevated ambient temperature.
- the embodiments according to FIGS. 3 and 4 show short-circuiters, which can additionally react within a specific design to different temperatures and overcurrents.
- FIG. FIG. 3 shows a longitudinal section through a spark gap arrangement which is of a basic construction similar to that according to FIG. 1.
- the short-circuiting element 6 is not connected directly to the outer terminal 1 or the electrode 4b via a temperature-sensitive element 7, but movably mounted in the terminal 1, within a through-hole provided there, with the terminal 1 in electrical contact therewith.
- the electrical contact is z. B. realized via projections 18, sliding or sliding contacts or a corresponding fit.
- the short-closing element 6 is also biased by a spring 8 and is held by a fuse fuse 15.
- the fuse fuse 15 is electrically conductive and temperature sensitive, z. B. via a solder 7a, connected to the short-circuiting element 6.
- auxiliary terminal 16 On the opposite side of the fuse fuse 15 with an auxiliary terminal 16 is electrically conductive and optionally also temperature-sensitive fixed at a point 7b.
- the spring 8 is biased here between the parts 1 and 16 located.
- the auxiliary terminal 16 has a terminal which can be contacted outside the spark gap.
- the auxiliary terminal 16 is insulated from the main terminal 1 and may be attached to the insulation 19.
- the positioning of the short-closing element 6 in the interior of the main terminal 1 can be made fixed by paragraphs 20 fixed or by means of internal thread.
- the type of contacting and positioning of the described items is shown only by way of example. It is crucial that a potential isolated from the terminal 1 can be introduced via the auxiliary terminal 16 into the spark gap.
- the current through the auxiliary terminal 16 flows via the fuse fuse 15 and the short-circuiting element 6 directly to the terminal 1 of the spark gap.
- the potential difference between the auxiliary terminal 16 and the main terminal 1 is thus extremely low in the unresolved state of the short-circuiter and therefore provides only insignificant requirements with respect to the insulation and the flashover distance. This simplifies the structure in the interior of the spark gap, but also in the outer connection region of the two potentials from the auxiliary terminal 16 and the terminal 1.
- connections at points 7a and / or 7b can have a different response temperature, which allows further coordination with regard to the tripping behavior and the requirements of the spark gap and the short circuiter.
- the main connection 1 with internal short-circuiting device is preferably carried out on versions with overcurrent release via an external thread.
- the fuse conductor 15 may have any characteristic and rated current strength according to the tripping function of the short-circuiter.
- the switching capacity of the fuse element 15, however, is of minor importance, since the destruction of the fusible conductor is virtually in the pressure-resistant housing of the spark gap and the short-term separation distance is hardly exposed to an arc load due to the short-circuit function.
- connection area of the spark gap is protected by the insulation and the heel against sparking.
- the spring 8 is pre-tensioned prior to assembly in the connection, whereby it is fixed.
- FIG. 4 shows a variant in which the prestressing of the spring 8 takes place only during the assembly of the entire spark gap arrangement and is therefore still adjustable even in the mounted state.
- FIG. 4 is again only exemplary and does not limit the invention's core.
- the spring 8 is guided on the short-closing element 6 and can be counter-supported on the opposite side on a fixed or variable shoulder 20 in the terminal 1.
- the fuse element 15 is fixed on the side of the auxiliary terminal 16 at the attachment point 7b.
- the auxiliary connection 16 is guided in the sleeve 21 and is kept insulated from the connection 1.
- the sleeve 21 or the shoulder 20 in connection 1 consist of insulating material or it is in turn an insulation according to the part 19 of FIG. 3 between the parts 16 and 21 is present.
- the insulation can also be carried out as an insulating coating.
- the sleeve 21 is opposite the shoulder 20 in connection 1 z. B. movable via a corresponding thread. By adjusting the position of the sleeve 21 in paragraph 20 of the terminal 1, the spring preload of the spring 8 can be adjusted. However, the distance and the stroke to the counter electrode 4a is to be observed.
- FIGS. 5 to 7 show applications for a spark gap with a short-circuiting device according to the embodiments as explained with reference to FIGS. 3 and 4.
- Fig. 5 shows a spark gap 22 with trigger circuit 23, which has at least two terminals, which are contacted with the spark gap 22 via the parts 5 and 16.
- the fuse fuse 15 of the short-circuiter is designed so that an overload of the trigger circuit can be avoided or a possible damage of the trigger circuit 23 is severely limited.
- the Fig. 6 shows a block diagram in which the current can be monitored by an element 24 connected in parallel with the spark gap 22.
- the element 24 may in this case z. B. another overvoltage protection element, an electronic device, an electronic short-circuiter or the like.
- FIG. 7 shows a block diagram in which the short-circuiting device of the spark gap 22 can be controlled via an auxiliary circuit 25 directly via a signal output from a controller 26.
- the auxiliary circuit 25 can in the simplest way controllable element, z. B. a thyristor, a transistor, a gas discharge, a spark gap or the like.
- the controller 26 may be responsive to any detection signals, such. B. arcs, fire sensors, insulation monitors and the like. With the help of an overcurrent protection device 26, instead of a short circuit of the system and their shutdown can be effected.
- the short-circuiting device of the proposed spark gap arrangement can be combined without additional external space requirement within a pressure-resistant encapsulation of the spark gap can be arranged and responds to external impressed or internal temperature increases, the short circuit between the two main electrodes is realized.
- the response is determined by the melting temperature of a temperature-sensitive attachment or substance.
- the response delay can be determined by the position, the geometry and the material properties of the short-circuiting element or its attachment. Finally, the response delay can be determined or controlled by the positioning of the short-circuiting element and by the different running behavior of the arc within the spark gap.
- the response delay can be chosen differently despite the same power conversion for pulse and continuous currents. It is possible to carry out the response delay at a lower power conversion with small continuous currents less than with high-power pulse currents.
- the Fig. Figure 8a shows a way to separate the mechanical connection and the electrical current flow.
- the bolt 6 has a separate contact region 27, which is in good electrical contact with the electrode 1 in the region 28.
- the transition region 27, 28 is chosen by the materials and the tolerances so that there is a very good electrical connection, which does not weld even at high currents and has a low friction. Materials used for this purpose are known from switching devices or rotating electrical machines.
- the current flow in the region of the soldering spot 7 can be compensated by a corresponding selection of materials or electrical insulation can be reduced or prevented (not shown).
- thermosensitive materials 7 of low electrical conductivity, but also insulating materials.
- the Fig. 8b shows an alternative possibility for realizing the described decoupling.
- the bolt 6 is provided with a flexible strand 29 and a flexible bellows 30, which does not restrict the movement of the bolt 6, but at the same time realizes a permanent good electrical connection.
- the strand 29 or the bellows 30 may be fastened or clamped to the connection part 9 or else to the electrode 1.
- FIG. 9 shows an exemplary illustration relating thereto. Accordingly, FIG. 9 shows an arrangement for avoiding the arc projection on the short-circuiting bolt 6. This is useful for very inexpensive materials for the bolt 6 and very tight spaces, where a transition of the arc in this area is not safe to exclude, makes sense.
- a, in this case insulating, protective part 14 is extended to the counter electrode 4a.
Landscapes
- Fuses (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007049396 | 2007-10-15 | ||
DE102008027589.1A DE102008027589B4 (en) | 2007-10-15 | 2008-06-10 | Spark gap arrangement with a short-circuiting device |
PCT/EP2008/060031 WO2009049940A1 (en) | 2007-10-15 | 2008-07-31 | Spark gap arrangement with a short-circuiting device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2201654A1 true EP2201654A1 (en) | 2010-06-30 |
EP2201654B1 EP2201654B1 (en) | 2011-10-19 |
Family
ID=40459066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08786657A Not-in-force EP2201654B1 (en) | 2007-10-15 | 2008-07-31 | Spark gap arrangement with a short-circuiting device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2201654B1 (en) |
AT (1) | ATE529928T1 (en) |
DE (1) | DE102008027589B4 (en) |
WO (1) | WO2009049940A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11862967B2 (en) | 2021-09-13 | 2024-01-02 | Raycap, S.A. | Surge protective device assembly modules |
US11990745B2 (en) | 2022-01-12 | 2024-05-21 | Raycap IP Development Ltd | Methods and systems for remote monitoring of surge protective devices |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013117176A1 (en) * | 2012-02-08 | 2013-08-15 | Obo Bettermann Gmbh & Co. Kg | Surge arrester |
DE102013005783B4 (en) * | 2012-10-31 | 2019-06-13 | DEHN + SÖHNE GmbH + Co. KG. | Device for operating voltage-independent generation of a safe, low-resistance electrical short circuit |
US10319545B2 (en) | 2016-11-30 | 2019-06-11 | Iskra Za{hacek over (s)}{hacek over (c)}ite d.o.o. | Surge protective device modules and DIN rail device systems including same |
EP3782245A1 (en) | 2018-05-14 | 2021-02-24 | SALTEK s.r.o. | Voltage limiter with a short-circuiting device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2295320A (en) * | 1940-06-25 | 1942-09-08 | Gen Electric | Electric discharge device |
DE59206580D1 (en) | 1992-12-24 | 1996-07-18 | Cerberus Ag | Gas-filled isolating spark gap |
DE10025239C2 (en) * | 2000-05-22 | 2002-06-27 | Dehn & Soehne | Partially or fully enclosed spark arrester |
DE10134752B4 (en) | 2001-07-17 | 2005-01-27 | Epcos Ag | Surge arresters |
DE10313045B3 (en) * | 2003-03-11 | 2004-07-15 | Dehn + Söhne Gmbh + Co. Kg | Short-circuit device for LV and MV equipment, has mechanically pre-stressed electrodes held apart by overvoltage protection device and brought into contact by failure of latter |
DE102005048003B4 (en) * | 2005-08-04 | 2008-04-30 | Dehn + Söhne Gmbh + Co. Kg | Short-circuiting device for use in low and medium voltage systems for property and personal protection |
-
2008
- 2008-06-10 DE DE102008027589.1A patent/DE102008027589B4/en not_active Expired - Fee Related
- 2008-07-31 EP EP08786657A patent/EP2201654B1/en not_active Not-in-force
- 2008-07-31 AT AT08786657T patent/ATE529928T1/en active
- 2008-07-31 WO PCT/EP2008/060031 patent/WO2009049940A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009049940A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11862967B2 (en) | 2021-09-13 | 2024-01-02 | Raycap, S.A. | Surge protective device assembly modules |
US11990745B2 (en) | 2022-01-12 | 2024-05-21 | Raycap IP Development Ltd | Methods and systems for remote monitoring of surge protective devices |
Also Published As
Publication number | Publication date |
---|---|
DE102008027589B4 (en) | 2014-08-28 |
EP2201654B1 (en) | 2011-10-19 |
DE102008027589A1 (en) | 2009-04-23 |
ATE529928T1 (en) | 2011-11-15 |
WO2009049940A1 (en) | 2009-04-23 |
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