How should the shielding and splicing of PCS connectors in energy storage systems be handled?

When connecting shielded cables to the cabinet in a PCS (Pressure Processing System), the shielding and overlapping treatment at the connector is crucial to ensuring shielding continuity; otherwise, it will become a point of EMI leakage. Treatment methods:

1. Select shielded connectors: Use connectors with metal shells and elastic conductive pads (such as spring clips or metal mesh pads) at the interface.

2. 360-degree overlap: The cable shield should achieve a 360-degree circumferential overlap with the connector's metal shell through the connector's rear shell or a special clamp. The "pigtail" method is strictly prohibited.

3. Connector installation: When the connector is installed at a cabinet opening, its metal shell should achieve low-impedance metal-to-metal contact with the cabinet panel, usually through conductive sealing gaskets or multi-point screw crimping.

4. Internal grounding: The connector shell should be connected to the cabinet's grounding busbar via a short grounding wire or directly.

5. For unshielded connectors: If they must be used, the cable shield should be grounded near the entry point, and a filter circuit may need to be added at the port.