Mobile Substation

These Mobile Substation is made up of several parts: incoming high voltage switch system, main power transformer, outgoing low voltage switch system and semi-trailers, etc.
The high voltage part is mounted in the front section of the trailer to provide a relatively spacious inlet space and bigger ground insulation distance. The high voltage switch adopts our in-house developed HGISi which is an intergration of tank SF6 gas circuit breaker(CB), disconnector switch(DS), earthing switch(ES), fast earthing switch(FES), current transformer(CT) and inlet/outlet bushing(BSG), etc. In addition, the high voltage part is also equipped with independent type potential transformer(PT) and lightening arrestor(LA), etc.

The main transformer and earthing transformer are mounted in the middle of the trailer. The main transformer adopts a flat type oil storage cabinet and a full sealed tank. High voltage bushings are arranged on the lower section of the tank to reduce the height. The transformer uses forced oil-circulated air-cooled radiator to compress overall volume as much as possible. 33kV HGIS is mounted in the rear of the trailer.

Low-voltage switch chamber is mounted at the rear section of the trailer to reduce the height, make the convenience for entering, exiting and operating by the operator. It is a separate room with thermal insulation, ventilation and purification system. The low-voltage switch chamber, which can provide a single loop or multi-loop output,