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Power Transformer
A box-type substation, also known as a prefabricated substation or pre-installed substation, is a compact indoor or outdoor distribution device manufactured in a factory. It integrates high-voltage switchgear, distribution transformers, and low-voltage distribution units according to a specific wiring configuration. This innovative equipment organically combines functions such as transformer step-down and low-voltage power distribution into a single, fully enclosed, moisture-proof, rust-resistant, dustproof, rodent-proof, fireproof, anti-theft, heat-insulated, and mobile steel-structure enclosure. It is particularly well-suited for urban grid construction and renovation, representing a new generation of substations that has emerged following the traditional civil-engineered substations.
Power transformers are critical stationary electrical devices used in power systems to step up or step down alternating current voltage and current. Their core function is to facilitate the efficient transmission, distribution, and safe utilization of electrical energy through the principle of electromagnetic induction.
The power transformer is a core “electrical energy hub device” in the power system. It uses the principle of electromagnetic induction to achieve contactless transformation of AC voltage (current) while maintaining the same frequency. Its primary functions are “step-up transmission and step-down distribution,” thereby resolving the contradiction between long-distance, low-loss power transmission and safe electricity usage by end-user devices. As an indispensable key component throughout the entire power chain—power generation, transmission, distribution, and consumption—it is widely used in all power-related applications, including power plants, substations, industrial enterprises, and residential buildings.