Abstract: Disclosed is a composite insulator (1) having a core (2), in particular made of a fiber-reinforced duromer, and a protective layer (8) which surrounds the core (2) and is made in particular of an insulating elastomer. In some sections, especially on the bottom side of screens (4), the protective layer (8) specifically includes particles (7) that influence the field of the insulator (1).

Abstract: A field-controlled composite insulator uses materials which are greatly stressed by an inhomogeneous distribution of an electrical field across a surface thereof. One of the causes thereof is the structural configuration of the insulator. The field strength changes particularly in a region of fittings due to a transition from insulating materials of sheds and an insulator core to a metal material, due to a transition from ground potential at cross members or to a conductor potential at that location, where conductor cables are attached. A further cause is deposits of dirt, which stress an insulator overall. A field control layer is therefore disposed between the core and the protective layer in at least one section of the insulator. The control layer includes particles as a filler, which influence the electrical field of the insulator. A method for producing the composite insulator is also provided.

Abstract: Disclosed is a composite insulator (1) having a core (2), in particular made of a fiber-reinforced duromer, and a protective layer (8) which surrounds the core (2) and is made in particular of an insulating elastomer. In some sections, especially on the bottom side of screens (4), the protective layer (8) specifically includes particles (7) that influence the field of the insulator (1).

Abstract: A field-controlled composite insulator uses materials which are greatly stressed by an inhomogeneous distribution of an electrical field across a surface thereof. One of the causes thereof is the structural configuration of the insulator. The field strength changes particularly in a region of fittings due to a transition from insulating materials of sheds and an insulator core to a metal material, due to a transition from ground potential at cross members or to a conductor potential at that location, where conductor cables are attached. A further cause is deposits of dirt, which stress an insulator overall. A field control layer is therefore disposed between the core and the protective layer in at least one section of the insulator. The control layer includes particles as a filler, which influence the electrical field of the insulator. A method for producing the composite insulator is also provided.

Abstract: A device which triggers off a drive mechanism (6) when an error occurs is provided in order to detect an error in a high voltage surge diverter. The drive mechanism (6) is triggered by an electrical signal. The electrical signal is produced according to the current which flows in the leakage path of the high voltage surge diverter. The inventive device can be, for instance, embodied as a high voltage surge diverter disconnecting device or as a failure signal device for high voltage surge diverters.

Abstract: The invention relates to a novel module that comprises an insulator (1) that forms an integral part with a surge arrester (2) composed of resistor elements. The insulator (1) is configured as a composite part with a solid body (12), for example a glass-fiber reinforced plastic tube, and an elastomer sleeve (13) molded thereonto, for example a protection, and the surge arrester (2) is embedded into the molded-on elastomer sleeve (13).

Abstract: An overvoltage arrester for high or medium voltage is described which includes an arrester block arranged inside a sealed, gas-tight enclosure housing, a sensor, in 5 particular a temperature sensor in the form of a surface wave sensor, is arranged inside the enclosure housing. The surface wave sensor is arranged in a housing that is designed as an antenna.

Abstract: An arrangement is described with several surge arresters arranged next to one another with their longitudinal axes substantially parallel. Each surge arrester is coupled to a common conductor rail via connecting lines which extend substantially radially away from the longitudinal axis of the surge arrester in a direction opposite to the position of exhaust openings on the circumference of the surge arrester. In the event of an electric arc, a current flowing through the connecting line thus generates a magnetic field which pushes the electric arc away from the surge arrester. The exhaust openings on each surge arrester are positioned so that the electric arc does not occur in the area between two adjacent surge arresters and is pushed away from the surge arresters by the components of the magnetic field. In addition, the direction of flow of the current in the connecting lines forms an angle smaller than 90.degree.