Placing the low-voltage winding inside the high-voltage winding of a transformer is a common design choice for several reasons:Improved Insulation Performance: Placing the low-voltage winding inside the high-voltage winding enhances insulation performance. The high-voltage side typically requires a higher insulation class due to the higher voltages involved. By positioning the low-voltage winding within the high-voltage winding, the insulation of the high-voltage winding can be utilized to enhance the overall insulation performance of the transformer, thereby increasing safety and reliability.

Reduced Size and Weight: Positioning the low-voltage winding inside the high-voltage winding reduces the size and weight of the transformer. This is because the high-voltage winding usually requires fewer turns and thicker conductors, while the low-voltage winding needs more turns and finer conductors. Placing the low-voltage winding inside the high-voltage winding reduces the space between windings, thus decreasing the overall size and weight of the transformer.

Improved Heat Dissipation Efficiency: Another benefit of placing the low-voltage winding inside the high-voltage winding is the improved heat dissipation efficiency of the transformer. The high-voltage winding is typically located on the outside of the transformer, making it easier to dissipate heat, whereas the low-voltage winding is positioned internally, which makes heat dissipation less efficient. This arrangement reduces the impact of the low-voltage winding on heat dissipation and helps maintain the transformer's operating temperature within acceptable limits.

In summary, placing the low-voltage winding inside the high-voltage winding is an optimization design that enhances insulation performance, reduces size and weight, and improves heat dissipation efficiency, making the transformer more efficient and reliable. This design choice is typically considered based on the specific application and performance requirements of the transformer.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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