Abstract: The invention relates to an energy transfer system for three-phase current in the average and a high tension range, comprising at least one conductive piece which has at least three cylindrical conductors which are electrically insulated from each other and arranged in a concentric manner. The aim of the invention is to produce an energy transfer system which does not produce magnetic fields in an external area and which has low installation costs. According to the invention, at least one connector part can be connected to the at least one conductive part, in order to link or branch said conductive parts.

Abstract: By a test vessel, a test enclosure is created immediately surrounding the zone of the line or cable harness to be inspected by detection. This enclosure is sealed off before detection-inspection and an internal atmosphere is substituted by at least a partial gas substitution with a test gas or a test gas mixture with a lower disruptive discharge voltage than that of air. This test method permits detection of faulty lines with greater distances between the faulty line, the test electrode, and the corresponding counter-electrode. A corresponding pliers-type device for the sectional detection of a line or harness, or a stationary vacuum seal-tight testing chamber capable of performing the same detection may be used. The method is suitable also for a local detection when the test vessel is created and formed by the installation object itself (e.g., an aircraft fuselage).