How to reduce coupling when routing the power FTU wiring harness?

To reduce coupling, wire harness routing requires classification and isolation.

Classification: Power lines, signal lines, and communication lines should be bundled separately and identified with different colors.

Isolation: Different types of wire harnesses should be routed in separate cable trays with a spacing greater than 150mm; crossings should be perpendicular.

Routing: Cables should be routed along the edge of the chassis to avoid forming large loops.

Fixing: Metal clips should be used, and the clips should be grounded.

Shielding: Sensitive wire harnesses should use shielding sleeves.

Through optimized routing, inter-wire coupling capacitance is less than 1pF, and inductive coupling is reduced by more than 30dB, meeting the IEC 61000-5-2 cable layout standard.