The YB series prefabricated packaged substations integrate high-voltage switchgear, transformers, and low-voltage switchgear into a compact, complete distribution unit. They are designed for use in urban and rural buildings, luxury villas, public plazas, residential communities, mines, oil fields, and other power-consuming facilities, serving as the primary means of receiving and distributing electrical energy within the distribution system. These substations feature strong system integration, small footprint, compact structure, reliable operation, and convenient maintenance, significantly reducing construction workload and capital expenditure. In distribution systems, they can be employed in ring-network distribution, dual-source supply systems, and radial terminal distribution systems.