Underground distribution transformer is new environment protection type transformer developed in view of the trend of buried urban and rural power supply and distribution transformer and special service environment. It can be installed underground or melt pit below footway. In thunderstorm season, it can operate constantly for certainly time under the soggy condition. It is suitable for power grid with capacity below 1000 kva, 10 kv rated voltage grade, 50 HZ frequency and can be used as distribution, power and lighting for road, tunnel, bridge and so on.
The iron core of S11-M.D underground distribution transformer made of low loss cold rolling silicon steel sheet and folded with mitre marching type. HV & LV coil adopt cylinder and spiral winding structure. LV side uses watertight structure and HV side uses waterproof cable head. It has the advantage of antipollution, strong waterproofness, low no-load current, low noise, low load loss, low temperature rise and also can operate certain time under soggy electric condition. It is energy saving products with great technology and performance ,advance technical index, unique structure, beautiful shape and suitable for the environment like underground tunnel with hydrops.