The dry - type transformer is a crucial device in the power supply and distribution systems of high - rise buildings, data centers, and industrial clean rooms. It can convert high - voltage electricity (such as 10kV/20kV) to the low - voltage electricity (like 380V/220V) required by end - users, ensuring stable power supply in sensitive environments.
Which models of Dry - type Transformers are available on the market?
1.Air - cooled Dry - type Transformers: Mainly include SCB10, SCB11, SCB13 series. These are widely used in commercial buildings, residential communities, and general industrial power distribution. Their simple structure and good heat dissipation make them suitable for common power supply scenarios.
2.Cast - resin Dry - type Transformers: Typical models are SG(B)10, SG(B)11 series. They are favored in scenarios with high safety requirements, such as data centers and hospitals, due to their excellent insulation performance and fire - resistant characteristics.
3.Non - encapsulated Dry - type Transformers: Represented by the SGB10 series. Commonly used in outdoor power distribution stations and some industrial fields with relatively open environments, as they can adapt to certain harsh environmental conditions to a certain extent. In addition, there are special - purpose dry - type transformers for specific applications. For example, high - frequency dry - type transformers for electronic equipment testing, dry - type transformers for railway traction power supply, and dry - type transformers for renewable energy grid - connection (such as photovoltaic and wind power systems), meeting diverse power conversion needs.
What are the performance characteristics of the Dry - type Transformer?
A.Winding Structure: The windings of dry - type transformers usually adopt a multi - layer cylindrical structure. For low - voltage windings, copper conductors are often used, which have low resistance and can reduce copper loss during operation. High - voltage windings are designed with a reasonable turn ratio and insulation spacing to ensure voltage withstand levels and uniform current distribution.
B.Insulation Performance: Rely on solid insulation materials (such as epoxy resin). This insulation method has high dielectric strength, good thermal stability, and can effectively resist moisture, dust, and chemical corrosion in the environment, ensuring long - term stable operation in harsh environments.
C.Heat Dissipation Mode: Air - cooled models rely on natural air convection or forced air cooling to take away heat. Cast - resin transformers also dissipate heat through the surface of the resin - insulated layer. Efficient heat dissipation design allows them to maintain a safe operating temperature even under high - load conditions.
D.Fire - safety Performance: Do not use flammable insulating oil, so they have high fire - resistance ratings. In fire - sensitive places like high - rise buildings and data centers, they can reduce the risk of fire spread, meeting strict fire - protection regulations.
E.Noise Level: Through optimized magnetic circuit design and structural improvement (such as using low - noise core materials and shock - absorbing structures), dry - type transformers can operate with low noise, which is very important for noise - sensitive environments such as hospitals and office buildings.
F.Maintenance - friendly Feature: The dry - type structure reduces the risk of oil leakage and related maintenance work. The insulation material has a long service life, and regular inspection and maintenance are relatively simple, which can reduce the overall operation and maintenance costs of the power system.
