How to achieve continuous grounding in PCS cable trays/conduits for energy storage systems?

In PCS (Precast Conduit System) engineering, cable trays and conduits serve as cable laying channels, and their continuous grounding is an important auxiliary shielding measure. Requirements for achieving continuous grounding include:

1. Metal Material: Metal cable trays and conduits must be used.

2. Electrical Connection Between Sections: Each section of cable tray or conduit should be bridged using a dedicated grounding connector or braided copper tape to ensure electrical continuity throughout the path. The paint or insulation layer at the connection point should be removed to ensure metal-to-metal contact.

3. Multi-Point Grounding: Cable trays/conduits should be reliably connected to the building's grounding system or the PCS cabinet's grounding busbar at both ends and at regular intervals (e.g., 20-30 meters) to form multi-point grounding, providing a discharge path for induced current.

4. Terminal Treatment: The ends of conduits entering the PCS cabinet should have a good overlap with the cabinet's metal wall. In this way, the metal cable tray/conduit itself constitutes a grounded shield, partially absorbing and reflecting external interference and limiting the leakage of internal cable radiation.