How does the field wiring process of an energy storage system PCS affect EMC?

The wiring process during PCS installation directly impacts its final EMC performance; poor workmanship can render a well-designed system ineffective. Key influencing factors include:

1. Grounding Connection: Excessively long or thin grounding wires, corroded connections, or poor contact can lead to excessively high grounding impedance, preventing effective common-mode noise discharge, filter failure, and reduced immunity.

2. Cable Shielding: Shielding layers not properly overlapped (e.g., twisted into a "pig's tail") significantly reduce high-frequency shielding effectiveness.

3. Cable Laying: Power and signal cables not separated, with long parallel runs, cause severe coupling interference.

4. Filter Installation: Input and output lines bundled together on the same side of the filter allow noise to couple directly to the filtered side.

5. Connector Installation: Shielded connectors not making proper conductive contact with the cabinet panel. Therefore, clear installation specifications must be provided, and installers must be trained to ensure on-site workmanship meets EMC requirements.