The benefits of a transformer pancake winding (also known as a disc winding) include:

Reduced Short-Circuit Voltage: The design of a pancake winding can lower the short-circuit voltage, reducing the likelihood of faults during short-circuit conditions. This helps to improve the transformer's short-circuit capability, enhancing system stability and reliability.

Efficient Use of Space: The flat shape of a pancake winding allows for a more efficient utilization of the internal space of the transformer, especially in the connection space between the high-voltage and low-voltage sides. This can reduce the size and weight of the transformer, making it more compact.

Low Inductance and Capacitance: Due to the construction of pancake windings, they have lower inductance and capacitance. This can reduce the risk of system resonance, especially in high-frequency applications such as harmonic filters.

Reduced Partial Discharge: Pancake windings typically exhibit a lower tendency for partial discharge because their winding layering structure can reduce electric field concentration, thus lowering the risk of partial discharges.

Uniform Heat Distribution: Due to the construction of pancake windings, their heat distribution is usually more uniform. This helps reduce temperature differences within the windings, increasing the transformer's lifespan and reliability.

It's important to note that pancake windings may not be suitable for all transformer applications, and their design and manufacturing costs are typically higher. The choice of winding type often depends on the specific application requirements and performance criteria 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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