A box type substation is a combination of high-voltage switchgear, transformers, and low-voltage switchgear, just like a substation being built in a "container". As for whether to equip a generator, it depends on factors such as the power supply category of the building and whether the box substation system is powered by dual power sources.

In the construction and renovation of urban and rural power grids in China, box type substations have been widely used, which not only reduces engineering investment and land occupation, but also shortens construction period and maintenance costs. After the box type substation is put into operation, it operates safely, has high reliability, and is particularly convenient for maintenance and repair.

Due to the fact that the selected models of box type substations are maintenance free products and do not require periodic major repairs, the reliability of power supply is enhanced to a certain extent, greatly reducing external power outage time and equipment maintenance costs.