1250kva dry-type transformer

A dry-type transformer is a fully sealed transformer that uses air convection to rapidly evaporate water in the edge material, thereby increasing its edge level.

Dry-type transformers have the characteristics of low loss, low noise, reliable operation and easy installation.

Dry-type power transformers have a wide range of applications and are in great demand in both industrial and civil applications. At present, the dry-type power transformer capacity used in China is 0kVA, followed by 500kVA. With the continuous development of China's economic construction, the requirements for power are getting higher and higher, so the 1250kV dry-type transformer will gradually be popularized and used. Let's give you a brief introduction to the 1250kV dry-type power transformer.

1. Main structure:

(1) Oil pillow: used to contain and cool the iron core. The oil pillow is equipped with a moisture absorbing agent, which automatically dries when it absorbs moisture in the air and reaches a certain amount. Since the moisture absorber is solid, it will not deteriorate even if it is stored for a long time or is damp.

(2) Fuel tank: used for storage edge materials.

(3) Iron shell: a closed metal box made of silicon steel sheets, which serves as an outer protective layer to prevent the internal coil from being affected by external short circuits.

(4) Winding (high voltage side): composed of multiple wires and edges, and wound into a spiral shape, in order to facilitate heat dissipation, while making the magnetic circuit distribution uniform, enhance the magnetic field, reduce no-load voltage, reduce noise, improve electromagnetic performance, and can withstand a certain overload capacity, as well as withstand the role of short-circuit current, equipment safe operation.

(5) Low-pressure casing: used to support the high-pressure casing and isolate it from the earth. In addition, there are gas relays, etc.

2. Product features:

(1) Small size and light weight. Generally, only 1/3 of the same capacity of oil immersion electric transformation, and convenient transportation.

(2) High efficiency. Due to the use of non-excitation voltage regulation, the no-load loss is only 0.2%~0.3%, which is higher than other types of transformers of the same capacity, so the energy-saving effect is remarkable. In addition, due to the use of vacuum casting, the temperature rise is low, about 40 °C/°C, which greatly reduces the temperature rise during operation, improves the reliability of the equipment, prolongs the service life of the equipment, reduces the maintenance workload, saves maintenance costs, and also saves energy.

(3) Strong anti-pollution ability. Because of the fully sealed structure, there are no moving parts, it is not easy to stain, there will be no leakage, and it can be protected from rain and wind, suitable for harsh environments. At the same time, this product also has the characteristics of moisture resistance and rat bite resistance, especially suitable for flammable and explosive places.