Dehn + Söhne Gmbh + Co Kg

Dehn Se + Co Kg

Dehn Se

Stephan Hierl

Uwe Strangfeld

Bernhard Krauss

Michael Waffler

Arnd Ehrhardt

Stefanie Schreiter

Georg Wittmann

Peter Zahlmann

Edmund Zäuner

Ralph Brocke

Jens Ehrler

Sascha Ludewig

Stefan Schön

Arnd Erhardt

Roland Eichenseer

Florian Gaeck

Martin Strobl

Patrick Spangler

Michael Moroshek

Michael Zimmermann

Bernd Leibig

Werner Riel

The present invention relates to a lightning-protection spark gap, comprising a housing (G); a first electrode (), and a second electrode (), which diverge from each other; wherein, between the first inner side (Ia) of the first electrode () and the second inner side (Ib) of the second electrode (), an ignition region (Z) and a subsequent propagation region (L) for an arc are formed; wherein the housing (G) forms an arc chamber (LK), which is arranged between the first and second electrodes () and which is delimited by a quenching chamber (); wherein, in the housing (G), at least one gas circulation channel (K) is configured, by means of which a gas flow escaping from the quenching chamber () can be returned to the arc chamber (LK) via a first cut-out (V; V'; V″; V′″) in the propagation region (L) of the first electrode ().

Lightning-protection spark gap

An overvoltage protection device has a plurality of overvoltage arresters and a disconnecting apparatus. For each of the overvoltage arresters a blocking element is present, each of which is arranged so as to block the path of movement of a mechanically preloaded wedge slide having a wedge bevel. A rocker lever arrangement has first lever arms corresponding to the number of wedge slides and at least one second lever arm for blocking or releasing a displacement element, wherein ends of the first lever arms each have a surface for contacting the respective wedge bevel of the wedge slides in such a way that, when the respective path of movement is released, at least one of the wedge slides lifts the corresponding first lever arm with its wedge bevel, as a result of which the second lever arm releases the displacement element.

Surge protection device having a plurality of surge arresters and, in particular thermal, isolating apparatus which is respectively associated with them

The invention relates to a thermally triggerable indication or switching device, having a movable, mechanically preloaded slide which directly or indirectly triggers or actuates the indication or switching device, and having a preformed part which changes its state of aggregation under the effect of heat, the preformed part, in the functional state, being adapted to be arranged so as to block the movable slide. According to the invention, in the initial state, the preformed part is loosely located in a receiving space. For transferring the preformed part to the functional state, the slide is moved in a position such that a gap space opens between the slide and a slide stop, wherein the preformed part enters the gap space and the slide is simultaneously preloaded.

Thermally triggerable indicating or switching device

The invention relates to a non-rotationally symmetrical spark gap, in particular a horn spark gap with a deion chamber, a multi-part insulating material housing () as a support and receiving body for the horn electrodes and the deion chamber, means for conducting the gas flow related to the arc, wherein the insulating material housing () is divided on the plane defined by the horn electrodes and has two half shells, and plug or screw connections () which lead out on the end face. According to the invention, with the exception of the sections of the plug or screw connections () leading out, the insulating material housing is surrounded on all sides by a cooling surface () which is near the housing and lies against the housing surface, and the cooling surface () is at least partly supported on webs () which are designed to conduct the gas flow on the outer surface of the half shells.

Non-rotationally symmetrical spark gap, in particular horn spark gap with deion chamber

The invention relates to a thermally triggered, mechanical switching device, consisting of a heat-sensitive means and a mechanical force-storage means, wherein the heat-sensitive means blocks or unblocks the movement path of a switching piece; furthermore, the switching piece is preloaded and held by the mechanical force-storage means, and comprising a housing that accommodates the aforementioned means. According to the invention, the housing is designed as a cartridge-shaped shell which receives a plunger in the interior thereof, which plunger is mounted in a movable manner through a first end-side opening in the housing and is supported against a fusible shaping part under pretension, wherein the fusible shaping part is arranged so as to cover a second opening, which is located opposite the first end-side opening, in such a way that, when the melting temperature of the fusible shaping part is reached, said fusible shaping part is displaced by the plunger and the plunger takes on a changed position.

Thermally triggered, mechanical switching device

The invention relates to a device for thermally disconnecting or tripping an overvoltage protection device, comprising: a locking element (A), on which a first force (F) acts, and which is fixed in such a way that same is released when a limit temperature is exceeded; and a slider (S) which is blocked in a first state (Z) by the fixed locking element (A), and on which a second force (F) acts in order to transfer same into a second state (Z) when the locking element (A) is released.

Device for thermally tripping or disconnecting an overvoltage protection device

The invention relates to an arrangement for overload protection for overvoltage protection equipment that has at least one voltage-limiting element and at least one voltage-switching element, and optionally with a back-up fuse, wherein the voltage-limiting element is in the form of a varistor and the voltage-switching element is in the form of a spark gap and these elements are connected in series. According to the invention, to protect against inadmissible pulsed currents, the voltage-limiting element in the series circuit has a monitoring spark gap, forming a bypass, connected in parallel with it. Furthermore, a monitoring device, e.g. a thermal monitoring device, is provided that bypasses both the monitoring spark gap and the voltage-switching element in the event of ageing effects, inadmissibly high mains voltages and/or low-energy, periodic, high-frequency overvoltages.

Arrangement for overload protection for overvoltage protection equipment

The invention relates to a defect indicator for an electronic device, in particular a surge arrester, comprising at least two thermal overcurrent protection devices which respond to different fault or overload states and each have a mechanical actuating device for triggering the fault signalling, wherein the mechanical actuating device is in the form of a bolt or pin which acts on a fault signalling element. According to the invention, the at least two overcurrent protection devices are arranged relative to one another in such a manner that the direction vectors of the bolts or pins intersect in an imaginary extension of the movement path thereof, wherein the particular bolt or pin acts on a respectively provided surface side of a displaceable armature and the armature occupies a variable position in the movement path. The armature also has a further surface side which, in the event of an armature movement, in turn acts on the fault signalling element and displaces the latter, for example, and this further surface side comprises at least one wedge slope for this purpose in order to change the direction of force on account of the movement of one of the bolts or pins.

Defect indicator for an electronic device, in particular surge arrester

The invention relates to a device for surge-current-resistant terminal contacting of electrical components (), in particular components of rotationally symmetrical form, wherein the components, on the lateral surface thereof, have spaced-apart contacting portions (), also comprising two U-shaped, electrically conductive contact pads () which have a partial surface () which is complementary to the contour of the respective contacting portion of the electrical component. According to the invention, each contact pad is assigned a U-shaped spring clip which likewise has a partial surface () which is complementary to the contour of the respective contacting portion of the electrical component, wherein said partial surface is provided in the connecting portion between legs (') of the U-shaped spring clip. In the assembled state, the U legs of the spring clip protrude between the lateral surface of the electrical component and the respective U leg of the respective contact pad and are fixed with respect to one another in a latching manner.

Device for surge-current-resistant thermal contacting of electrical components

The invention relates to a horn spark gap with a deion chamber () with a non-blowout design having a multi-part insulating housing as supporting and accommodating body for the horn electrodes () and the deion chamber () and means for conducting the arc-induced gas flow, wherein the insulating housing is divided in the plane spanned by the horn electrodes and forms a first and a second half-shell. According to the invention, the horn electrodes () have an asymmetrical form. The arc running region () between the electrodes is delimited in the direction of the deion chamber by a plate-shaped insulating material (), wherein the plate-shaped insulating material () is inserted into a respective first shaped portion of the respective half-shell in a form-fitting manner. Furthermore, the first shaped portions accommodate a ferromagnetic deposit () of the arc running region ().

Horn spark gap with a deion chamber

The invention relates to an arrangement for igniting spark gaps with a trigger electrode T which is located on or in one of the main electrodes Hand is insulated with respect to this main electrode H, wherein the trigger electrode T is electrically connected to one of the other main electrodes Hby means of at least one voltage-switching or voltage-monitoring element and there is an air gap between the trigger electrode T and the other main electrode H. According to the invention, the trigger electrode T forms a sandwich structure with an insulation section I and a layer which is composed of a material M with a lower conductivity than the material of one of the main electrodes, wherein this sandwich structure represents a layered dielectric with the order of a first partial capacitor Cwith the dielectric of the insulation section I and a second partial capacitor Cwith the material M as dielectric.

Arrangement for igniting spark gaps

The invention relates to a plug-in combination of appliances for protecting against overvoltages, said combination of appliances comprising: a socket-type lower part and at least one plug-in module, which can both receive overvoltage protection elements; contact elements and contact counter elements that are respectively arranged in the lower part and in the plug-in module; and complementary guide rails or guide grooves for inserting or pushing-on and fixing the respective plug-in module. According to the invention, functionally separated, mechanical catch or snap-in elements act between the respective plug-in module and the socket-type lower part independently of the forces which hold together the contact elements and the contact counter elements in a positively fixed and/or non-positively fixed manner when the plug-in module is in use. The catch or snap-in function can be cancelled without any mechanical auxiliary means when the respective plug-in module is to be replaced.

Growing community of inventors

Neumarkt, Germany

Stephan Hierl