The ZGS and ZFS series combined transformers are developed and manufactured by our R&D personnel, building upon the advantages of similar products both domestically and internationally, while taking into account the actual power supply conditions in China. The combined transformer is a new type of power distribution equipment in which the transformer core, high-voltage load switch, fuses, and high- and low-voltage connections are housed within a fully sealed oil tank, with transformer oil serving as the insulating medium for live parts, both between phases and to ground.

The combined transformer is suitable for urban public power distribution, high-rise buildings, residential communities, parks, expressways, as well as oil fields, industrial and mining enterprises, and construction sites. It is an essential piece of equipment for urban power grid construction and renovation.

This product complies with the requirements of national standards such as JB/T 10217-2013 Combined Transformers and GB/T 7251.12-2013 Low-voltage switchgear and controlgear assemblies – Part 2: Power switchgear and controlgear assemblies.