Distributed gap wound core is a type of core used in pole-mounted transformers. It is a variation of the shell-type core, where the windings are distributed along the core with gaps between them. This design helps to reduce losses and improve the performance of the transformer. Distributed gap wound cores are often employed in high-power distribution transformers.

The advantage of a distributed gap wound core is that it helps to reduce losses and improve the performance of the transformer. The gaps between the windings help to minimize eddy current losses and reduce the leakage flux, resulting in higher efficiency. This type of core also provides better cooling and allows for easier maintenance and repair of the windings. Additionally, distributed gap wound cores are often used in high-power distribution transformers, making them suitable for applications requiring higher power handling capabilities.

The materials commonly used for distributed gap wound cores in pole-mounted transformers are typically laminated steel or amorphous alloy. Laminated steel is a traditional choice due to its low cost, excellent magnetic properties, and easy availability. Amorphous alloy, on the other hand, is a more advanced and efficient material that offers lower core losses and improved energy efficiency. Manufacturers may choose either of these materials based on their specific requirements and cost considerations.