How to reduce coupling when routing the concentrator wiring harness?

The routing of internal wiring harnesses (power lines, signal lines) within the concentrator cabinet has a significant impact on electromagnetic coupling. The wiring principles for reducing coupling are: classification, layering, and separation.

Classification: Classify wiring harnesses according to their interference characteristics into categories such as high-voltage, low-voltage, and communication.

Layering: Install different cable trays or racks within the cabinet, and lay different categories of wiring harnesses on different layers; for example, high-voltage wires should be on the bottom layer, and low-voltage signal lines on the top layer.

Separation: Within the same type of wiring harness, interference source lines (such as inverter output lines) and sensitive lines (such as sampling lines) should be routed separately, with a minimum parallel spacing of more than 10cm; perpendicular crossings are unavoidable.

All wiring harnesses should be routed as close as possible to the metal cabinet wall or grounding metal plate. Wiring harnesses themselves should be neatly bundled to avoid forming large loops. Through standardized wiring harness routing management, coupling interference between wiring harnesses can be reduced by 10-20dB.