Three-level Protection System For Construction Power Supply Composed Of Distribution Cabinets

At the construction site, Powbinet played a core role in power distribution and protection. A complete three-tiered power structure requires a clearly defined power distribution from power source to specific points of use. Temporary power supply at the construction site should adopt a three-tiered distribution system, with the main distribution cabinet, distribution boxes, and switch boxes arranged according to regulations to achieve a rational layout of electrical facilities at each level.

A fully configured distribution cabinet system includes low-voltage electrical devices of different levels. These devices are installed at the site entrance, areas with concentrated loads, and final power consumption locations according to the actual power needs of the construction site. Each cabinet integrates necessary switching devices, circuit breakers, and leakage current devices, ensuring that the electrical distribution at each level corresponds to the power transmission path at the construction site. This meets the distribution requirements from the transformer output to the electrical equipment while facilitating on-site management and maintenance.