How Do Distribution Cabinets Form A Complete Three-level Protection System For Construction Power Supply?
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In construction power environments, the Powbinet system plays a crucial role in three-level power distribution and three-level protection. The first level is the main distribution cabinet, the second level is the sub-distribution cabinets, and the third level is the switch box. The distribution cabinet needs to draw three-phase power and ground wire from the transformer side to form a main circuit, serving as the core of the system. Based on field practice, the main distribution cabinet should adopt a bottom-in, bottom-out structure, with copper busbars used for the main busbar connection to improve conductivity. An internal metering system should be installed to provide a stable power supply for subsequent levels.
