Inlet/outlet cabinet: the power supply inlet/outlet section of the distribution device which is generally equipped with inlet switch, current transformer, etc.

Connection cabinet: it is basically the same as the busbar cabinet. Two busbar lines are connected in this cabinet, but there is no switch in the connection cabinet, only the isolation plug or the disconnecting switch.

PT cabinet: voltage transformer cabinet, used for metering, measuring and protecting.

Busbar cabinet: it is equipped with a connection switch between two sections of busbar. The function is to divide the busbar into two sections which can change the operation mode of the system freely, improve the power consumption reliability, reduce the power outage accident scope, facilitate the maintenance of bus, and realize  switch automatically.

Capacitance cabinet: capacitors are fitted internally to improve the power factor of the section busbar. Function as follows:

1. Reduce the transmission of reactive power and the power loss in the distribution line.

2. Exploit equipment potential, improve equipment output and fully improve equipment utilization.

3. Compensate the inductive reactive power, improve the power factor, save power and reduce the cost of electricity.

4. Improve voltage and power quality.

Station transformer: Small capacity transformer is installed inside to provide power supply for station interior, used for lighting, socket, etc.