
An underground transformer is a switchgear in which the transformer and related auxiliary equipment are combined into a single unit. This equipment is installed under the surface of the earth outdoors, without direct contact with people, does not take up space on the surface of the earth and is well suited for urban environments, especially for densely populated central cities.
An underground transformer is a switchgear in which the transformer and related auxiliary equipment are combined into a single unit. This equipment is installed under the surface of the earth outdoors, without direct contact with people, does not take up space on the surface of the earth and is well suited for urban environments, especially for densely populated central cities. It is also applicable to lighting and power supply systems in streets, highways, bridges, tunnels, parking lots, airports, ports, tourist attractions and other sites.
An underground transformer consists of two parts: above-ground and underground. The overhead part is a hybrid structure combining an advertising panel and a low-voltage switch cabinet. The underground part is made of stainless steel, has a completely sealed design with a degree of protection IP68 and is capable of operating in a submerged state for a certain time. The equipment is equipped with a pre-fabricated foundation pit, automatic drainage system and temperature control system, which ensures safe operation inside the pit. With the development of smart grid technologies, some underground transformers are also equipped with functions for remote monitoring and fault diagnosis.