What is distribution transformers?
2025-09-16
Distribution transformer is one of the most widely used devices in modern power systems. Its primary role is to step down high-voltage electricity (such as 10kV or 35kV) into lower voltages (400V/230V) that are safe and suitable for end-users. This ensures that power is delivered reliably to factories, commercial buildings, offices, and residential communities.
Types of Distribution Transformers
The oil-immersed transformer is a new type of high-performance transformer with a more reasonable structure and better performance. Its three-dimensional wound core has three core legs arranged in an equilateral triangle. There is no air gap in the magnetic circuit, the winding is tighter, the three magnetic circuits are of the same length and are all the shortest, and the cross-sectional area of the core legs is closer to a circle. Therefore, the performance is further improved, the loss is reduced, the noise is reduced, the three harmonics are balanced, and the third harmonic component is reduced. This product is more suitable for urban and rural, industrial and mining enterprise power grid transformation, and is more suitable for combined transformers and prefabricated substation transformers.
Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and other places. Simply put, dry-type transformers refer to transformers whose cores and windings are not immersed in insulating oil.
Distribution transformers are essential components of power transmission and distribution systems. Together with medium and low voltage switchgear, distribution cabinets, soft starter cabinets, and frequency converter cabinets, they form a complete power distribution and protection system. With the development of smart grids and energy conservation and environmental protection, distribution transformers are also moving towards high efficiency, energy conservation, and intelligent monitoring.