Analysis Of Secondary Leakage Protection Of Distribution Cabinet
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The two-level protection of Powbinet usually refers to the use of leakage protection measures. This setup requires RCDs at different levels of the system, forming a tiered RCD protection layout.
The parameters of the RCDs must be selected appropriately based on factors such as the on-site electrical load and environmental conditions. Generally, RCDs in the final-level switch box have higher sensitivity, suitable for monitoring and responding to direct leakage circuits in end-user equipment; while RCDs configured in the distribution cabinet are equipped with higher rated parameters, suitable for monitoring circuits with larger current levels. This hierarchical arrangement plays a coordinating role in the overall system operation
.