Abstract: A surge arrester for DC mains comprises a spark gap for extinguishing mains follow currents in the DC mains, the current intensity of which is equal to or greater than a specified current threshold, and a triggerable extinguishing aid assigned to the spark gap, which is set up to extinguish mains follow currents below the specified current threshold. The surge arrester further comprises an evaluation module for triggering the extinguishing aid, the evaluation module being set up to trigger the extinguishing aid as soon as at least two tripping conditions are fulfilled which are characteristic of the fact that the spark gap alone 10 cannot extinguish the mains follow current within a specified time duration. Furthermore, a method of operating such a surge arrester is described.

Abstract: The present invention relates to a method for the automatic monitoring of an electrotechnical work flow and to a corresponding device.

Abstract: The invention relates to a surge protection apparatus (10) for protecting an electrical installation against transient overvoltages, having a voltage-limiting protection component (18) and additionally a voltage-switching protection component (20). The voltage-limiting protection component (18) and the voltage-switching protection component (20) are connected in series. The voltage-limiting protection component (18) is dimensioned such that the voltage-limiting protection component (18) satisfies the condition UB=Un/Kx, where UB is the rated voltage of the voltage-limiting protection component (18), Un is a nominal voltage applied to the voltage-limiting protection component (18), and Kx is a setting parameter the value of which is at least 2.

Abstract: An overvoltage protection spark gap assembly includes a first overvoltage protection spark gap (1) which has a first main terminal (1a) and a second main terminal (1b); and a second overvoltage protection spark gap (1?) which has a third main terminal (1a?) and a fourth main terminal (1b?). The second main terminal (1b) and the third main terminal (1a?) are electrically connected together. A first electrically conductive probe device (K2) is introduced into a wear part (38) of the first overvoltage protection spark gap (1) such that, in the event of a specific degree of wear, the first electrically conductive probe device (K2) comes electrically into contact with an arc (41) in the first overvoltage protection spark gap (1). The second overvoltage protection spark gap (1?) has a second electrically conductive probe device (33) which comes electrically into contact with an arc in the second overvoltage protection spark gap (1?).

Abstract: 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.

Abstract: A delimitation unit (18) for a pipe section (24), in particular a pipe section (24) of a pipeline (12), comprises at least one protective component (46), a control unit (48) for controlling the protective component (46), and a communication unit (50) for communicating with a remote monitoring station (14). The communication unit (50) is arranged to receive at least one control command from the monitoring station (14). The control unit (48) is arranged to operate the protective components (46) in different operating modes to maintain the voltage of the pipe section (24) below at least one limit value, and to change the operating modes due to the control command received by the communication unit (50). Furthermore, a pipeline system (10) and a method of operating a pipeline system (10) are shown.

Abstract: The present invention relates to a lightning-protection spark gap, comprising a housing (G); a first electrode (3a), and a second electrode (3b), which diverge from each other; wherein, between the first inner side (Ia) of the first electrode (3a) and the second inner side (Ib) of the second electrode (3b), 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 (3a, 3b) and which is delimited by a quenching chamber (4); wherein, in the housing (G), at least one gas circulation channel (K1) is configured, by means of which a gas flow escaping from the quenching chamber (40) can be returned to the arc chamber (LK) via a first cut-out (V1; V1?; V1?; V1??) in the propagation region (L) of the first electrode (3a).

Abstract: An asymmetric surge protection device for a DC circuit (16) has a negative side (32) which can be connected to a current output (28) of the DC circuit (16), a positive side (30) which can be connected to a current input (26) of the DC circuit (16), and an asymmetric neutral section (34). The asymmetric neutral section (34) has a positive protection level (Vp) for a positive voltage (V) between the positive side (30) and the negative side (32), and a negative protection level (Vn) for a negative voltage (V) between the positive side (30) and the negative side (32), the positive protection level (Vp) being different from the negative protection level (Vn). Furthermore, a DC circuit arrangement (14) and a DC network (10) are shown.

Abstract: The invention provides a plug-in module (10) for a rail-mounted device (1), comprising a housing (G), which has a first axial end portion (10a) and a second axial end portion (10b); wherein, between the first axial end portion (10a) and the second axial end portion (10b), the housing (G) has a plurality of substantially planar side surfaces (S1, S2, B1, B2); also comprising a first resiliently elastic tongue (12), which is fitted on a first side surface (S1) of the housing (G); wherein the first resiliently elastic tongue (12) has a first axial end portion (12a), which is fitted on the housing (G), and a second axial end portion (12b), which can be moved in a resiliently elastic manner; wherein a first latching nose (12c) is formed between the first and second axial end portions (12a, 12b) and protrudes from the first side surface (S1) of the housing (G); and further comprising a first actuating element (16), which is mounted in a movable manner on the first side surface (S1) and can be moved from a first pos

Abstract: The invention relates to a connection head piece for contacting an insulated down conductor in the external lightning protection, comprising a sleeve having an axially extending first inner diameter section adjusted to the outer diameter or cross-section of the insulated down conductor for receiving one end of the insulated down conductor, and having a second inner diameter section extending axially adjacent thereto and adjusted to the outer diameter or cross-section of a stripped, exposed conductor end of the insulated down conductor, and means for fastening the stripped, exposed conductor end in the second inner diameter section. According to the invention, a static friction-generating means is formed in the first inner diameter section of the sleeve and flexibly projects into the interior of the sleeve such that a nonpositive connection is established between an outer sheath of the insulated down conductor and the sleeve upon insertion of the down conductor.

Abstract: The invention relates to an overvoltage protection arrangement comprising a horn spark gap located in a housing, with a chamber for arc quenching, wherein a trigger electrode is located in the ignition region of the horn spark gap, wherein a disconnecting element is provided that interrupts a connection between a trigger circuit and the trigger electrode, and thus disconnects the trigger electrode, wherein the disconnecting element is tripped or controlled by an evaluation unit that is subject to and reacts to the loading of a power follow-on current.

Abstract: The invention relates to an arrangement for firing spark gaps with a trigger electrode which is located at or in one of the main electrodes and which is insulated from this main electrode, wherein the trigger electrode can be electrically connected to a further main electrode via at least one voltage-switching or voltage-monitoring element and there is an air gap between the trigger electrode and the further main electrode, wherein the trigger electrode forms a sandwich structure with an insulating layer and a layer made of a material with lower conductivity than the material of one of the main electrodes. Moreover, the insulating layer is designed as a thin foil or lacquer layer and the layer made of the material of lower conductivity is in contact with one of the main electrodes or rests on it.

Abstract: 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.

Abstract: A surge protection device has at least one disconnecting device (34), at least one actuating device (36), an indicating device (40), and a shaft (38) mounted for rotation between at least a first position and a second position, the at least one actuating device (36) being variable between a first position and a second position. The shaft (38), the indicating device (40) and the actuating device (36) are formed in such a way and the actuating device (36), when in the first position, is fastened to the at least one disconnecting device (34) so as to be preloaded such that when the disconnecting device (34) is triggered, the actuating device (36) is released and triggers the indicating device (40) by means of the shaft (38). Further, a modular surge protection system is described.

Abstract: The invention provides a surge protector, in particular for information technology and/or communications technology systems, which is equipped with: a housing (ST, BT; GT); a first input terminal (E1) for applying a first external voltage signal; a second input terminal (E2) for applying a second external voltage signal; a first output terminal (A1) for outputting the first external voltage signal; a second output terminal (A2) for outputting the second external voltage signal; a surge protection circuit device (G1, R1, Z1; G1, G2, R1, R2, Z1; G1, G2, R1, R2, Z1, Z2), at least part of which is provided on a circuit board (P) located in the housing (ST, BT; G); a first current path (ST1) for conducting the first external voltage signal from the first input terminal (E1) to the first output terminal (A1) bypassing the surge protection circuit device (G1, R1, Z1; G1, G2, R1, R2, Z1; G1, G2, R1, R2, Z1, Z2); a second current path (ST2) for conducting the second external voltage signal from the second input termin

Abstract: The invention relates to a triggered fuse for low-voltage applications for protecting devices that can be connected to a power supply system, in particular surge protection devices, consisting of at least one fusible conductor which is located between two contacts and is arranged in a housing, and also consisting of a trigger device for controlled disconnection of the fusible conductor in the event of malfunctions or overload states of the respective connected device, wherein an arc quenching medium is introduced into the housing. The at least one fusible conductor has a plurality of conventional electrical bottlenecks, which are designed for the rated load of the respective fuse. At least one further additional geometric bottleneck is provided, which is disconnectable by rupturing depending on the trigger unit when applied by tension.

Abstract: The invention relates to a lightning protection spark gap assembly.

Abstract: The invention relates to an overvoltage protection arrangement comprising a horn spark gap located in an insulating housing, with a deionization chamber for arc quenching, wherein the deionization chamber has a plurality of spaced quench plates and a trigger electrode is located in the ignition region of the horn spark gap, wherein a disconnecting device comprises a fusible link that is located in the region of the deionization chamber and is exposed there to a loading of a power follow-on current, wherein the fusible link holds a disconnecting element, preferably supported by spring force, in a first position, and on melting releases this disconnecting element in such a way that the disconnecting element adopts a second position wherein, on reaching the second position, an electrical connection to the trigger electrode is interrupted and the trigger electrode is thereby disconnected.

Abstract: 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.

Abstract: A lightning protection spark gap assembly comprises: a lighting protection spark gap having a first main connection and a second main connection, wherein a first voltage line of a supply network is connectable to the first main connection and a second voltage line of the supply network is connectable to the second main connection; a safety fuse device which is triggerable and which is connectable between the first or second voltage line and the corresponding main connection of the lightning protection spark gap, wherein at least one current path leading via the lighting protection spark gap is formable between the first voltage line and the second voltage line during operation; an indicator device for detecting a current flow in the current path or a corresponding portion of the current flow in the current path and for mechanically or electrically delayed triggering of the safety fuse device.