Don't confuse anymore! The difference between box type substations and box type transformers

First, let's talk about the box type transformer, which is essentially a "transformer packed in a box". We have discussed before that the function of a transformer is to "increase or decrease" the voltage, such as reducing the high voltage of the power grid to 220V household voltage. The box type transformer adds a protective shell to this "Voltage Transformer", which can withstand wind, rain, and bumps. Its main function isstable voltage regulation. It has a simple structure, with only the transformer body and a small number of protective accessories inside, like a "dedicated technician" who only does voltage regulation.

The box type substation is much more complex, it is a 'mini distribution room'. You can think of it as a combination of a "box type transformer+other distribution equipment", which not only has a transformer for voltage regulation, but also includes switches, lightning arresters, electricity meters, protective devices, etc. For example, when the current is too high, the switch inside will automatically power off; When encountering lightning strikes, lightning arresters can block lightning damage. Its functions are more comprehensive, from receiving high voltage electricity, to voltage regulation, power distribution, and even protecting power lines. It is a versatile process that can directly supply power to residents or shops in a certain area, like a "versatile butler".

For example, the large box at the entrance of the residential area that can supply power to the entire building is most likely a box type substation, which can "process" the electricity from the power grid and distribute it to each household; And next to a certain workshop in the factory, there is a small box that is only responsible for regulating the voltage of specific machines, which may be a box type transformer. Simply put, a box type transformer is a "single tool", a box type substation is a "complete toolbox", the former is the core component of the latter, and the latter is the "upgraded combination" of the former.