According to the different structure and the different components, the box-type substation can be divided into two typical styles: European box-type transformer and American box-type transformer.

From the structure of high and low voltage switch cabinet, transformer composition, this type of box substation is called European box transformer.

Metaphor for high and low voltage switchgear, transformer built a house.

In the structure of the load switch, ring network switch and fuse structure simplified into the transformer tank immersed in oil, lightning arrester also USES oil-immersed zinc oxide arrester, transformer remove the oil cushion, oil tank and radiator exposed to the air, this type of box substation is called the American box transformer.

It's like hanging a box next to a transformer.

Buried box-type substation, the transformer is installed under the ground, the ground part is high and low voltage power distribution equipment, through the vertical layout, its installation area greatly reduced, and through the shape optimization design, the part to make landscape decoration or light box advertising, indeed to beautify the ornament and decoration role in the surrounding environment, unlike other box-type substation, installed very not coordinated with the environment.

Buried design life in 20 years or so commonly, after years of affirmation to transform update, here will involve the issue of construction time, generally change or indoor distribution box, power outage update time can be completed in one day, the ground is adopted directly buried installation, if to change the overall replacement, encountered a great deal of trouble

Maintenance is difficult, once the transformer needs maintenance, because the transformer box space is small, conditions are quite limited, field maintenance is difficult, if you want to replace the transformer, you must first lift the upper end of the high and low distribution part, remove the cable, the workload is huge, the blackout time may not be expected.

Because the body structure and installation method of underground transformer in the water easily, in the village, ground drain almost flat with the ground, in case of precipitation rainfall is large, the port will become a water inlet flow backward, then automatically submersible pump are powerless, but risk is far greater than the water is installed on the transformer transformer room in the basement.

Due to the compact size, all electrical operations of buried box substation are outdoors. In case of bad weather, it will bring great inconvenience and insecurity to operators.

Residential area buried transformer is a distribution terminal, almost can not do circuit switching, and a single large capacity, power supply area is also large, such as a longer blackout time, will cause serious impact on the lives of residents, buried transformer products above 500kVA, some large complete sets of enterprises are not recommended as community public transformer use

Buried box transformer is suitable for application and promotion in some occasions with small capacity and high landscape requirements, such as park green space and urban road lighting.