Box-substation is a kind of switchgear, transformer, low-voltage distribution equipment, power factor compensation device and power metering device and other substation equipment combined into a set of fast-loading distribution equipment. In the 1960s, Europe and the United States and other western countries began to use this new outdoor box-substation, for example, the United States, box station has accounted for more than 90% of the market. In the early 1980s, box-type substations began to be used in large and medium-sized cities in China. By the end of 1990s, box-type substations were widely used in urban, rural small and medium-sized substations, industrial and mining enterprises, large-scale construction sites and mobile operation substations, multi-storey residential buildings, small high-rise buildings and high-rise buildings. Now, apart from some remote rural areas still built power stations, almost all cities and towns with rapid economic development, 10KV terminals for cable are using box stations.