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 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: 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.