This series of combined substation were composed by three parts of high-pressure chamber (6-10kv), transformer chamber , Low voltage apparatus chamber (380/220v),which have advantage of safe and reliable operation,complete series,small floor space, lower total cost, short installation period, simple operation and maintenance , beautiful appearance, etc., and have a wide range of adaptability, versatility and interchangeability.
They were mainly used for the ring network system with 6-10kv high voltage and the trunk type and radial system, which can replace the traditional style of indoor and outdoor substations (plants).