#SM6 #ring network cabinet used for second time between the medium voltage power network and substation, low voltage power network. Its function is to 10KV or 20KV to 0.4KV low pressure. The pressure change consists of the following four parts:
1. Middle pressure equipmentlevel connected with the grid. 2. MV / LV power distribution transformer
3. Low voltage distribution cabinet connected to the grid in the next level
4. Distribution room
It is cheap, small volume, used in the places where breaking frequency operation is not frequent, small load occasions. Directly connected with circuit not to connected with a motor / generator, use load switch control circuit, a fuse to protect the circuit. It is widely used in the second power distribution station.