Dehn + Söhne Gmbh + Co Kg

Dehn Se

Dehn Se + Co Kg

Richard Daum

Georg Wittmann

Uwe Strangfeld

Sascha Ludewig

Sebastian Haas

Edmund Zäuner

Bernhard Krauss

Michael Waffler

Stefan Schön

Helmut Hirschmann

Roland Eichenseer

Florian Gaeck

Christian Lang

Juliane Klose

Michael Weissflog

Dietmar Dürr

Patrick Spangler

Stefan SCHÖN

Dietmar DÜRR

Raimund KÖNIG

An overvoltage protection spark gap assembly includes a first overvoltage protection spark gap () which has a first main terminal (a) and a second main terminal (b); and a second overvoltage protection spark gap (') which has a third main terminal (a′) and a fourth main terminal (b′). The second main terminal (b) and the third main terminal (a′) are electrically connected together. A first electrically conductive probe device (K) is introduced into a wear part () of the first overvoltage protection spark gap () such that, in the event of a specific degree of wear, the first electrically conductive probe device (K) comes electrically into contact with an arc () in the first overvoltage protection spark gap (). The second overvoltage protection spark gap (′) has a second electrically conductive probe device () which comes electrically into contact with an arc in the second overvoltage protection spark gap (′).

Overvoltage protection spark gap assembly and method for operating an overvoltage protection spark gap assembly

The invention relates to a pluggable device combination for protecting against surges, having a socket-like bottom part of U-shaped cross section for receiving at least one plug module which accommodates a surge protection element, latching means which act between the plug module and the socket-like bottom part being provided, said latching means comprising first means which are formed on a biased joint on opposite sides of the plug module and respectively interact in a latching manner with associated second means on the bottom part, the latching connection being breakable by pressing the joint at the faces of the plug module, and the respective joint transitioning into an actuation area, the actuation areas additionally being formed opposite each other on the plug module in such a way that imaginary connecting lines between the actuation areas would form the shape of an at least approximate triangle.

Pluggable device combination for protecting against surges

The invention relates to a device combination for protecting electrical networks against overvoltages or overcurrents, comprising an essentially U-shaped base and at least one plug-in module, which can be plugged or pushed onto the base, wherein the base has connection terminals for connecting to the respective network and also has plug-in contacts, which are connected to the connection terminals and are complementary to mating plug-in contacts or contact tongues of the plug-in module, and the plug-in module has a housing which accommodates one or more lightning and/or overvoltage arresters, and the mating plug-in contacts or contact tongues pass through a floor side of the housing. According to the invention, means are provided for changing the position and the distance between the plug-in contacts and the mating plug-in contacts or contact tongues, wherein, starting from a working position, with a closed, surge-current-resistant electrical connection, it is possible to select an idle position, in which the plug-in contacts and mating plug-in contacts or contact tongues are located in an isolation/disengagement position.

Device for protecting electrical networks from overvoltages or overcurrents

A surge protection device comprises at least one disconnecting device provided in a housing, a heat-conducting element, an actuating element for actuating an indicating device, and a locking element, the heat-conducting element being in contact with the housing. The actuating element is fastened to the heat-conducting element by means of the locking element, and the fastening is configured such that when a predetermined temperature at the locking element is exceeded, the locking element is detached from the heat-conducting element and/or from the actuating element and releases the actuating element.

Overvoltage protection apparatus and modular overvoltage protection system

An overvoltage protection device comprises at least one overvoltage protection unit having at least one contact lug as well as a mechanical disconnection apparatus that is activated in the event of a thermal overload. The mechanical disconnection apparatus comprises a connection element that can be moved from a closed position to a current-interrupting or voltage-disconnecting position by a slider that is preloaded by spring force.

Overvoltage protection device having a thermal disconnection apparatus

The invention relates to a surge arrester which, in a housing (), has at least one arrester element (), in particular a varistor, a solder-fixed thermal disconnection point (), which is connected to the arrester element, and a damage indicating device () for displaying the fault state, wherein the damage indicating device also queries the state of a thermal disconnection device, in particular a fuse, and presents the possible fault states of the arrester element and of the disconnection device mechanically in an OR combination in a suitable way. Furthermore the thermal disconnection device comprises a movable component, which is fixed by an indicator wire and is released after the melting or destruction of said wire. According to the invention, a guide part () for a compression spring () or similar force accumulator is provided on or in the housing.

Surge arrester having an optical fault indicator

A surge protector includes a thermal separating device and an error display, and at least two first protection elements, particularly disk-shaped varistors (), and at least one second protection element, particularly a gas arrester (), wherein the first and the at least one second protection elements are switched in a Y arrangement. The surge protector further includes a device housing for accommodating the protection elements, and structure, such as a spring (), for the mechanical biasing of the thermal separating device, wherein the thermal separating device has a low-melting solder, and the first protection elements () are disposed in the device housing such that a connection arm of a protection element () is positioned opposite the connection arm of the further protection element () at a distance, and the thermal separating device is predominantly positioned in the distance space () formed in such a manner.

Surge protector having a thermal separating device

The invention relates to an overvoltage protection device having one or more parallel-connected voltage-limiting elements which are located in one physical unit, such as varistors, diodes or means of this type configured in the form of a disc, comprising a shell apparatus in order to electrically disconnect the overvoltage-limiting elements when they are thermally overloaded, and means for indication and/or signalling of the fault state which then occurs, wherein the switching apparatus is connected via a means which can be released thermally, such as adhesive or a solder, to a connecting contact of the at least one overvoltage-limiting element, and/or to an external terminal contact or plug contact. According to the invention, the switching apparatus is in the form of a solid U-shaped switching fork, the fork tines of which run essentially parallel to the side surfaces of the overvoltage-limiting element, holding the latter in the space between the tines. At least one of the fork tines rests on the at least one connecting contact and is fixed there via the means which can be released thermally wherein, when disconnection occurs, the disconnection slide is moved with the switching fork being driven and, in the process, the connection point between the fork tines and the connecting contact represents a fulcrum for the switching fork movement.

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Neumarkt, Germany

Richard Daum