Abstract: A protective device to be integrated into a high-voltage cable of a high-voltage on-board power supply includes a cut-out for interrupting at least one electrical conductor of the high-voltage cable in a fault scenario, a shielding element for forming a cable shield with a shielding conductor of the high-voltage cable, and a housing to be arranged between two high-voltage-cable sections of the high-voltage cable. In the housing, the cut-out and the shielding element are arranged, and the housing has contacts for connecting the cut-out to conductor sections of the at least one conductor and for connecting the shielding element to shielding-conductor sections of the shielding conductor. At least a part of the housing is capable of being non-destructively detached from the high-voltage-cable sections, in order to enable an exchange of at least the cut-out in the case of a defect of the cut-out.

Abstract: A protective device to be integrated into a high-voltage cable of a high-voltage on-board power supply includes a cut-out for interrupting at least one electrical conductor of the high-voltage cable in a fault scenario, a shielding element for forming a cable shield with a shielding conductor of the high-voltage cable, and a housing to be arranged between two high-voltage-cable sections of the high-voltage cable. In the housing, the cut-out and the shielding element are arranged, and the housing has contacts for connecting the cut-out to conductor sections of the at least one conductor and for connecting the shielding element to shielding-conductor sections of the shielding conductor. At least a part of the housing is capable of being non-destructively detached from the high-voltage-cable sections, in order to enable an exchange of at least the cut-out in the case of a defect of the cut-out.

Abstract: A testing apparatus and a method for detecting insulation resistance of an unshielded high voltage line are provided. The testing apparatus has a voltage source for providing a measurement voltage for the high voltage line, an accommodating device for accommodating the high voltage line and for connecting the high voltage line to the voltage source, an insulation tester for detecting the insulation resistance on the basis of the measurement of a leakage current via the insulating sheath, two electrically conductive half shells which, when combined, form hollow cylindrical sheathing for the high voltage line, and two contact probes which can be electrically connected to the sheathing and to an inner conductor of the high voltage line. The insulation tester is designed to measure a current between the contact probes as the leakage current.

Abstract: A testing apparatus and a method for detecting insulation resistance of an unshielded high voltage line are provided. The testing apparatus has a voltage source for providing a measurement voltage for the high voltage line, an accommodating device for accommodating the high voltage line and for connecting the high voltage line to the voltage source, an insulation tester for detecting the insulation resistance on the basis of the measurement of a leakage current via the insulating sheath, two electrically conductive half shells which, when combined, form hollow cylindrical sheathing for the high voltage line, and two contact probes which can be electrically connected to the sheathing and to an inner conductor of the high voltage line. The insulation tester is designed to measure a current between the contact probes as the leakage current.