Abstract: A cable, in particular a cable for the at least partial transmission of electrical energy, comprising several, in particular three, phase cores and at least one further core, in particular a protective core, is proposed, wherein the several phase cores are stranded to form at least one phase bundle and the at least one further core runs outside the at least one phase bundle in the cable.

Abstract: Rotatable plug connector assembly having a first plug element and a second plug element, which comprises a substantially hollow-circular-cylinder-shaped portion. The first plug element and the second plug element can be arranged inside one another at least in part in a connected state and are rotatable relative to one another in the connected state. The substantially hollow-circular-cylinder-shaped portion of the second plug element has latching teeth on the circumference, said latching teeth facing the first plug element in the connected state. In the first plug element there is provided at least one spring element, which comprises at least one spring lugs, which is adapted to engage between two adjacent latching teeth of the second plug element in the connected state.

Abstract: A device for monitoring a supply line of a frequency converter-fed electrical machine is used to predict failure, wear and/or ageing of the electrical supply line. The electrical supply line is designed and installed to connect an electrical machine in an industrial machine or plant or in a land or aircraft vehicle to a frequency converter. The frequency converter is designed and intended to supply the electrical machine with a single-phase or multi-phase alternating voltage with preferably variable voltage amplitude and pulse duration through the electrical supply line, wherein a change in pulse duration and/or voltage amplitude of the alternating voltage serves to change a speed or torque of the electrical machine. The frequency converter is set up and intended to provide each phase of the AC voltage as a sequence of square-wave pulses with a high edge steepness for feeding the electrical machine.