Abstract: A triggerable spark gap, a switching circuit and a method for manufacturing a triggerable spark gap are disclosed. In an embodiment, a triggerable spark gap includes a trigger electrode, an adjacent electrode at the trigger electrode, a counter electrode and a gap between the counter electrode and the adjacent electrode, wherein a distance between the trigger electrode and the adjacent electrode is less than a distance between the trigger electrode and the counter electrode, wherein the distance between the trigger electrode and the counter electrode is less than a distance between the adjacent electrode and the counter electrode, wherein the counter electrode and/or the adjacent electrode includes a first phase including a first material and a second phase including a second material, and wherein the second material has a lower electron work function than the first material.

Abstract: A triggerable spark gap, a switching circuit and a method for manufacturing a triggerable spark gap are disclosed. In an embodiment, a triggerable spark gap includes a trigger electrode, an adjacent electrode at the trigger electrode, a counter electrode and a gap between the counter electrode and the adjacent electrode, wherein a distance between the trigger electrode and the adjacent electrode is less than a distance between the trigger electrode and the counter electrode, wherein the distance between the trigger electrode and the counter electrode is less than a distance between the adjacent electrode and the counter electrode, wherein the counter electrode and/or the adjacent electrode includes a first phase including a first material and a second phase including a second material, and wherein the second material has a lower electron work function than the first material.

Abstract: A method for manufacturing of an electrode of a surge arrester, an electrode and a surge arrester are disclosed. In an embodiment, the method includes positioning an electrode body in an electrochemical cell with and an electrolyte solution for a nickel deposition. The electrolyte solution includes at least one or more of magnesium sulphate, sodium sulphate and sodium chloride and electrolytically coating the electrode body with a coating to form the electrode for the surge arrester. The coating has nickel and the electrolyte solution is configured such that a surface of the coating includes a reduced wettability.

Abstract: A spark gap arrangement is disclosed. In an embodiment the spark gap arrangement includes a hollow body including an insulating material, the hollow body encompassing the main axis of the spark gap and two electrodes arranged on face-side regions of the hollow body so that a discharge space is defined in an interior of a chamber of the hollow body, wherein an inner wall of the hollow body comprises a depression so that the chamber projects radially outwardly over the inner wall of the hollow body on at least one face side.

Abstract: A power contactor and a method for checking a functioning of a power contactor are disclosed. In an embodiment a power contactor includes a first electrical contact, a second electrical contact, a switching element configured to assume an open position and a closed position, wherein, in the closed position, the switching element connects the first electrical contact and the second electrical contact to one another, and wherein, in the open position, the first electrical contact and the second electrical contact are insulated from one another and a current sensor integrated into the power contactor, wherein the current sensor is configured to detect a current intensity of a current flowing through the power contactor.

Abstract: A spark gap arrangement is disclosed. In an embodiment the spark gap arrangement includes a hollow body including an insulating material, the hollow body encompassing the main axis of the spark gap and two electrodes arranged on face-side regions of the hollow body so that a discharge space is defined in an interior of a chamber of the hollow body, wherein an inner wall of the hollow body comprises a depression so that the chamber projects radially outwardly over the inner wall of the hollow body on at least one face side.

Abstract: A surge arrester comprises an electrical insulator (10), which surrounds a cavity (20), a pin electrode (30) and a tube electrode (40), which are arranged in the cavity (20), wherein the pin electrode (30) projects into the tube electrode (40). An ignition strip (50) is applied on an inner surface (S10a) of the insulator facing the cavity (20). An outer metallization (61, 62, 63) is arranged on an outer surface (S10b) of the insulator (10). As a result, an effective reduction of the protection level can be achieved in the case of the surge arrester.

Abstract: A method for manufacturing of an electrode of a surge arrester, an electrode and a surge arrester are disclosed. In an embodiment, the method includes positioning an electrode body in an electrochemical cell with and an electrolyte solution for a nickel deposition. The electrolyte solution includes at least one or more of magnesium sulphate, sodium sulphate and sodium chloride and electrolytically coating the electrode body with a coating to form the electrode for the surge arrester. The coating has nickel and the electrolyte solution is configured such that a surface of the coating includes a reduced wettability.

Abstract: A spark gap arrangement includes a discharge chamber, an electrode head and a contact connection arranged outside the discharge chamber. The electrode head is electrically conductively connected and mechanically coupled to the contact connection in such a way that, when the contact connection is removed from its position or when the contact connection reaches a preset position, the electrically conductive connection is interrupted, and the electrode head is mechanically decoupled from the contact connection so that the electrode head is movable in the direction of the discharge chamber interior and/or within the discharge chamber.

Abstract: A spark gap arrangement includes a discharge chamber, an electrode head and a contact connection arranged outside the discharge chamber. The electrode head is electrically conductively connected and mechanically coupled to the contact connection in such a way that, when the contact connection is removed from its position or when the contact connection reaches a preset position, the electrically conductive connection is interrupted, and the electrode head is mechanically decoupled from the contact connection so that the electrode head is movable in the direction of the discharge chamber interior and/or within the discharge chamber.

Abstract: A surge arrester comprises an electrical insulator (10), which surrounds a cavity (20), a pin electrode (30) and a tube electrode (40), which are arranged in the cavity (20), wherein the pin electrode (30) projects into the tube electrode (40). An ignition strip (50) is applied on an inner surface (S10a) of the insulator facing the cavity (20). An outer metallization (61, 62, 63) is arranged on an outer surface (S10b) of the insulator (10). As a result, an effective reduction of the protection level can be achieved in the case of the surge arrester.

Abstract: A surge arrester includes two side electrodes extending into an interior space formed by means of at least one insulating body and a central electrode. The end-side distance between the side electrodes is greater than the distances between a respective side electrode and the central electrode. The distance between the side electrodes is less than the distance between the end regions of the central electrode and a base of the side electrodes.

Abstract: A surge arrester includes two side electrodes extending into an interior space formed by means of at least one insulating body and a central electrode. The end-side distance between the side electrodes is greater than the distances between a respective side electrode and the central electrode. The distance between the side electrodes is less than the distance between the end regions of the central electrode and a base of the side electrodes.

Abstract: A gas-filled discharge gap includes at least two electrodes and an electrode-activation mass that is arranged on at least one of the electrodes. The electrode-activation mass contains K2WO4.

Abstract: A gas-filled discharge gap includes at least two electrodes and an electrode-activation mass that is arranged on at least one of the electrodes. The electrode-activation mass contains K2WO4.

Abstract: Gas-filled discharge paths such as voltage surge protectors and spark gaps can have a low ignition delay in dark spaces when a special activating compound is used. To simplify the manufacture of such discharge paths, fully nickel-plated electrodes are used; in addition, nickel in a metallic form, in addition to titanium, is also added to the special activating compound.

Abstract: In gas-filled discharge gaps having a vitreous electrode activation compound formed of several components. In order to prevent excessive fluctuations of the d.c. sparkover voltage Uag under load, potassium silicate and cesium tungstate are provided as base components of the electrode activation compound to sodium silicate, cesium silicate and titanium.

Abstract: In order to optimize the so-called light-dark effect, i.e., the difference in ignition voltage between the first and second ignition after dark storage in gas-filled discharge paths, an additional component made of an oxide compound of cesium and a transition metal such as tungsten, chromium, niobium, vanadium or molybdenum is added in a quantity of 5 to 25% by weight to the activating compound which is comprised of several components. The other components of the activating compound include a barium compound and a transition metal in metallic form such as titanium, and an alkaline halide or an alkaline earth halide and/or sodium silicate and/or potassium silicate as a basic component.

Abstract: A gas-filled overvoltage arrester with an electrode activation compound. In order to ensure a high degree of adherence of the activation compound to the electrodes in a gas-filled hydrogen-containing overvoltage arrester, the activation compound comprises a first aluminum component, a second halide component, and a third dielectric or ferroelectric metal oxide component. These three components are present in the proportions of 50 to 70, 20 to 40, and 3 to 10 mol. %, respectively.

Abstract: A heated hydrogen storage device for a plasma switch includes a ring-shaped holder element having an inwardly directed, ring-shaped shoulder that forms an opening. The device also includes a first and a second metal disk, with the first metal disk having a cut-out portion. A heating element is arranged between the first and second metal disks and is insulated therefrom. The heating element forms a turned heating track and has one end contacting the second metal disk and a second end extending outside through the cut-out portion of the first metal disk. The first metal disk and the heating element are stacked one above the another and rests on the ring-shaped shoulder of the ring-shaped holder element. The second metal disk is connected to the holder element and it covers the opening of the holder element. The second metal disk also fixes the first metal disk and the heating element in position.