What are the benefits of oil-immersed traction transformers?

Oil-immersed traction transformers provide effective cooling and insulation. The oil dissipates heat generated within the transformer, allowing for efficient thermal management, which is crucial for handling high power levels in traction applications. The oil also offers superior dielectric properties, enhancing insulation between internal components. This design can be more compact than dry-type transformers, which is beneficial where space is limited, such as onboard trains. Oil-immersed transformers typically have a longer lifespan and can be more cost-effective due to their efficiency and durability.