How should the shielding of the power cable for the power FTU feeder be grounded?

Feeder power cable shielding grounding must balance EMC and safety. A single-point grounding principle should be adopted: ground at the FTU end, with the other end left floating. Grounding method: crimped 360° to the chassis via a shielded connector, or connected via a grounding copper busbar. Grounding wire diameter: not less than 1/2 of the phase wire cross-sectional area. For three-phase cables, each phase shielding layer should be grounded separately. In high-frequency applications, a 100nF/2kV capacitor can be connected in parallel at the grounding end. Grounding resistance should be less than 0.1Ω. Proper grounding effectively suppresses electric field coupling and avoids ground loops, meeting the IEC 61000-5-2 cable shielding grounding specification.