A box-type substation (abbreviated as a box-type substation) generally consists of a high-voltage compartment, a transformer compartment, and a low-voltage compartment. Box-type substations are relatively simple power distribution devices. The transformer section can be selected according to general guidelines, and the capacity generally does not exceed 1250kVA.
The first type is primarily used in urban residential areas and streets. When voltage increases are needed during peak electricity demand periods, our equipment-box-type substations-are utilized.
The second type is primarily used for temporary power supply, such as at construction sites where electrical equipment needs to be modified within existing buildings. Box-type substations are also frequently used in field operations, such as at construction sites, docks, and airports.
(1) For simple lighting and public power distribution, the box-type substation high-voltage wiring solution does not require high-voltage metering; only low-voltage metering or no metering is required, and no compensation is required. The outgoing feeder circuits are 4 to 6, controlled and protected by plastic circuit breakers.
⑵ For common power and lighting distribution, the number of outgoing feeder circuits increases to 8 to 12. Furthermore, reactive power compensation should be provided.
⑶ Suitable for self-maintenance power and special situations.
Box-type substations have a small footprint. A typical box-type substation occupies only 5 to 6 square meters, and can even be reduced to 3 to 3.5 square meters. They are suitable for load-intensive locations such as industrial and mining enterprises, ports, and residential areas. They extend high-voltage power supply to the load center, reducing the low-voltage power supply radius and minimizing losses. The low-voltage power supply lines are relatively few, typically 4 to 6. This shortens on-site construction time and reduces investment.