Cheryong's SIUT, Solid Insulation Underground Transformer, represents a major advancement in transformer technology. The SIUT is built by oil-free construction with maintenance free solid insulation and is hermetically sealed in polymer shell. As a result, SIUT delivers exceptional performance, reliability and safety. Since SIUT does not contain liquid for insulation or cooling, there is no threat of an oil leak or explosion. In addition, the compact size of SIUT minimizes excavation work and enables easy installations in any location including very small and limited space. Our SIUT is designed specifically for sub-surface applications and can be installed for above-ground applications; such as buildings.

SIOT, Solid Insulation Overhead Transformer, is a revolutionary transformer which is a breakthrough solution for existing overhead distribution transformers. For number of decades, standard overhead transformers have been part of our daily lives. However due to its distinctive charactersitcs, there were limitations on installation sites; dust, humidity, interference of branches and bushes and so on. SIOT is designed to fully operate under harsh environment and offers easy and safe access for workers.

SIPT, Solid Insulation Padmount Transformer, is designed to overcome existing issues with conventional Padmount transformers. SIPT is equipped with ventilation windows to improve temperature rise. Full design test reports are available upon request.