Before an installed cable system is commissioned, it is usually tested in accordance with the relevant test specifications for high and extra-high voltage XLPE-insulated cable Systems. These include DC voltage tests on the cable sheath and/or AC voltage tests on the main insulation. For extra-high voltage systems, particularly, they may be supplemented by partial discharge tests on the accessories installed.

With ist own mobile resonant test system Südkabel con produce test voltages up to 520 kV. Thus it is possible to test cable systems up to Um = 550 kV compliant to international/ national and clients’ specifications.