Box-type substations, also called pre-installed substations or pre-installed substations. Is a high-voltage switchgear, distribution transformers and low-voltage power distribution devices, according to a certain wiring scheme into a factory prefabricated indoor and outdoor compact power distribution equipment, that is, the transformer step-down, low-voltage power distribution and other functions are organically combined in Together, it is installed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft, heat-insulating, fully-enclosed and movable steel structural box, which is particularly suitable for the construction and reconstruction of urban networks. It is the one that has risen since the construction of substations. A new kind of substation. The box-type substation is suitable for mines, factory enterprises, oil and gas fields, and wind power stations. It replaces the existing civil power distribution and distribution substations and becomes a new type of complete power transmission and distribution device.
Box-type substations are suitable for residential quarters, urban public utilities, bustling downtown, and construction power supplies. Users can select box-type transformers according to different conditions of use and load levels. Box-type substations have been developing very rapidly since their inception, and developed countries in Europe have accounted for 70% of distribution transformers, and the United States has accounted for 90%. The rapid development of China's urban modernization and the continuous upgrading of urban distribution networks will surely be widely used.
For box-type substations, since the late 1970s, China has introduced and imitated box-type substations from France, Germany, and other countries. It uses high- and low-voltage switchgears and transformers in its structure. This type of box is called the European box change. The image is likened to high and low voltage switchgears and transformers. Since the 1990s, China has introduced the United States box-type substations, structurally simplifying the load switch, the ring network switch and the fuse structure into the transformer tank and immersing it in oil. Arrester also uses oil-immersed zinc oxide surge arresters. Transformer to cancel the oil pillow, fuel tank and radiator exposed in the air, this box is called American box change, the image metaphor for the transformer hanging next to a box.