With the acceleration of urban and rural modernization, urban construction has entered the urban beauty stage aimed at improving streetscape and city appearance. The traditional box-type substations are scattered and disorderly occupying the prime ground in the busy city, which is incompatible with the beautiful urban environment. Urban planning, highways, and the construction of public facilities place higher and higher requirements on power equipment. In developed countries such as Europe, the United States, and Japan, transformers have been gradually buried underground and installed in accordance with the concept of urban ecological design.
The underground box transformer is a brand-new power complete set of equipment designed and developed to meet the requirements of the above fields. Underground box-type transformers are mainly composed of underground transformers and advertising light box-type outdoor switching equipment. The underground transformer is a new type of compact transformer equipment that is composed of a transformer, a high-voltage load switch, a fuse, etc. It is installed in a pit, does not occupy surface space, and can be immersed in the ground for a period of time. Running in water. Advertising light box-type outdoor switch equipment is a hybrid structure that integrates billboards and outdoor switch equipment and is installed on the ground. The inside of the box is an outdoor high and low voltage distribution cabinet, with advertising light boxes on both sides, which has excellent visual effects. The underground box transformer conforms to the urban ecological design concept, occupies a small area, and beautifies the environment. It is suitable for urban traffic main roads, residential areas, airports, stations, highways and other places. Will become a trend in the transformation of urban distribution network equipment
Buried box transformer is mainly composed of underground transformer and box-type outdoor switchgear. The underground transformer is a new type of compact transformer equipment that is composed of a transformer, a high-voltage load switch, a fuse, etc. It is installed in a pit, does not occupy surface space, and can be immersed in the ground for a period of time. Running in water. Box-type outdoor switchgear is a hybrid structure that integrates outdoor switchgear and is installed on the ground. The inside of the box is an outdoor high and low voltage distribution cabinet, which takes up less space and does not affect ground building facilities.
Features
Buried box transformer
The Buried box transformer used in the underground box transformer has the following characteristics:
(1) The box is made of stainless steel, fully sealed, with a protection level of IP68 and can be immersed in water.
(2) The high and low voltage incoming and outgoing lines adopt waterproof, fully sealed, fully insulated, and fully shielded wiring methods, making operation safer.
(3) Use naphthenic transformer oil to ensure good heat dissipation ability.
(4) Amorphous alloy core can be used, which has significant energy saving effect.
(5) High insulation and heat resistance level, environmentally friendly.
(6) Backup and plug-in fuses provide safer protection for the transformer.
(7) The load switch has two, three and four position forms and is suitable for a variety of power supply systems.
Prefabricated pit foundation
The pit foundation of the underground box transformer is prefabricated in the factory. The prefabricated pit foundation has the following characteristics:
(1) The foundation of the pit can be pre-formed with a steel plate of more than 6mm and has a fully sealed structure to ensure that surface water and other debris cannot enter the pit: it can also be a prefabricated reinforced concrete structure and treated with advanced waterproofing technology to ensure that the foundation does not leakage,
(2) There is a water collection tank at the bottom of the pit, and a submersible pump controlled by an automatic drainage system can be installed.
(3) High and low voltage cable installation brackets are installed in the pit to facilitate cable installation and fixation.
(4) Waterproof lights are installed in the pit to facilitate maintenance.
(5) The foundation top cover is equipped with an openable access hole.