Abstract: A connecting unit containing a four-segment inner conductor connection in an enclosure provided with two partitioning insulators and a installation opening, is used to provide easy mechanical access to an inner conductor of two partitioned sections of a gas-insulated, tubular conductor system, with one conductor segment of the inner conductor connection detachably connected in a shape of a claw to adjacent connector segments.

Abstract: Attachment points of an internal conductor in single-phase gas-insulated power transmission systems with tubular external and internal conductors are designed to have high dielectric strength and are of simple design, an end piece (6) of internal conductor is axially secured in a post insulator two head pieces (61, 71) radially and axially secured in a feed-through bore of the post insulator and axially connected to one another. The head pieces are configured as control electrodes. One head-shaped piece is also used as a plug contact with the adjacent internal conductor section.

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.