Three-phase high voltage tester 5A 6.6kV.

This source can test the withstand voltage of three-phased low voltage cables (U1000 R2V, HO7RNF …) in a single sequence instead of three.
Besides the time savings it brings, this method also reduces the stress on wires.

The cabinet is installed outside the safety zone and the high voltage carried inside by shielded cables that ensure the  protection integrity.

Standards :

EN 50395: Electrical test methods for low voltage energy cables