Abstract: A current transformer configuration includes a primary part and a secondary part. The primary part is surrounded by a housing. The housing has a first conductive housing part and a second conductive housing part. An electrically insulating gap lies between the two conductive housing parts. The housing passes through the secondary part. The electrically insulating gap is bridged by a surge protection configuration.

Abstract: A current transformer configuration includes a primary part and a secondary part. The primary part is surrounded by a housing. The housing has a first conductive housing part and a second conductive housing part. An electrically insulating gap lies between the two conductive housing parts. The housing passes through the secondary part. The electrically insulating gap is bridged by a surge protection configuration.

Abstract: In a high-voltage installation, for example a tube gas line, several partial discharge measurement probes are provided that detect electromagnetic signals of partial discharges. The corresponding measurement data is supplied to an evaluation device that includes a neural network that is trained in such a way that it determines the location of occurrence of the partial discharge from the measurement data of two sensors.

Abstract: In a high-voltage installation having at metallic encapsulating housing, a cone antenna is provided as a device for transmitting electromagnetic signals. The cone tip antenna facing the inner wall of the encapsulating housing resulting in an optimal coupling characteristic.

Abstract: Sensors positioned in power transmission systems with tubular enclosures have radio interrogation capabilities. The radio antenna assigned to a sensor is a planar antenna with a radiating element and a conductive baseplate, with the radiating element being designed as a reed that is provided in a self-supporting manner in a recess in the baseplate and is short-circuited to the baseplate at one end. This forms a quarter-wave antenna which can be tuned by using a metal resonating member with a U-shaped cross-section and can be combined with a surface-wave sensor.

Abstract: In a measuring system for an enclosed high-voltage switchgear having at least two poles, each of which is phase segregated, and with sensors for dielectric noise and a detector device connected to them for outputting a signal in the event of an noise, a time comparator is provided that blocks the output of a signal if the time difference between two noise signals from sensors of different phases is less than a certain interval of time, in particular an adjustable interval.

Abstract: A high-voltage measurement device for an electrical high-voltage switchboard plant having an measurement electrode built into an encapsulating housing, as well as an electrical conductor which conducts a measurement signal provided by the measurement electrode, connected with the electrode, and passed through the wall of the encapsulating housing in insulated manner. To protect operating personnel from high voltage which occurs at the conductor, the conductor is grounded by metal springs outside the encapsulating housing. These metal springs can be lifted up from the conductor if necessary, by means of activation elements. This is done, for example, by setting a switchboard housing onto a measurement housing which surrounds the conductor. If the switchboard housing is removed, the conductor is automatically grounded again by the metal springs. This high-voltage measurement device can be used for all types of gas-insulated high-voltage switchboard plants.

Abstract: The measuring device is incorporated in a projection of the casing. Its auxiliary electrode forms the high-voltage capacitor of a capacitive voltage divider together with the internal conductor, and is connected with the casing via a low-voltage capacitor. The measurement connection emerges from the projection in gas-tight manner, and is connected to a display or measuring device. In order to be able to detect high-frequency compensation operations, also, the low-voltage capacitor consists of two nested cones with a solid dielectric. A terminal resistor which is connected to the internal conductor of a gas-tight coaxial connector is arranged in the inside cone. The terminal resistor is adapted to the characteristic impedance of the coaxial connector and that of the measurement connection. The measuring device with the auxiliary electrode can be inserted into tubular gas connections in the casing of a high-voltage conductor, especially in compressed gas-insulated, encased high-voltage switch conductors.