The box-type transformer (commonly referred to as a "box substation") functions as a complete distribution system, comprising an integrated assembly of a transformer, high-voltage control equipment, and low-voltage control equipment. Its components are assembled in a prescribed sequence within a fully sealed, reinforced steel enclosure designed to be waterproof, dustproof, and rodent-proof.
This equipment is widely deployed in residential complexes, commercial centers, and similar venues, as well as in power engineering construction projects; it also finds application in new energy wind power initiatives. Furthermore, it is utilized in high-altitude hydroelectric projects and for providing power supply to dedicated railway lines. The exterior enclosure is constructed from conductive metal materials featuring robust corrosion resistance, while internal interfaces utilize insulating materials; the interior of the enclosure is equipped with air conditioning and dehumidification systems. During maintenance, personnel must wear insulating footwear and gloves, and are required to periodically inspect and clean the enclosure, the surrounding environment, and the connection components.
As a complete set of power distribution equipment, the box-type transformer consists of an organic combination of a transformer, high-voltage control equipment, and low-voltage control equipment. Its fundamental principle lies in the rational assembly-executed in a prescribed sequence-of a pressure-activated system, armored cabling, a fully automated substation system, a DC system, and corresponding technical apparatus. All these components are installed within a specialized, fully sealed, and reinforced steel enclosure designed to be waterproof, dustproof, and rodent-proof, thereby constituting this specific type of transformer unit. Box-type transformers have been widely adopted in power engineering construction projects.
