A mobile power station refers to a mobile power source equipped with a complete set of power supply equipment on a transport vehicle such as a trailer. It is mainly used to provide power or lighting for engineering operations. The mobile power station series comes in various structures and functions, such as vehicle-mounted power stations, trailer-mounted power stations; mobile low-noise power stations, mobile container power stations, etc.
The dry-type transformer for mobile substation is air-cooled and composed of H-class insulation materials. It features reliable main and longitudinal insulation, good thermal stability, and the ability to operate at full load continuously. The core is made of high-permeability, thin silicon steel sheets with a 45° C joint, and the structure is compact and reliable. This effectively reduces no-load current and no-load loss. The box shell is welded from steel plates, and the main side adopts corrugated steel plate structure to increase the heat dissipation surface. A temperature monitoring device (temperature control switch) is installed in the upper cavity of the box shell interior. The temperature controllers are all normally open contacts, and their control lines are introduced to the low-voltage feeder switch. Over-temperature protection is achieved (125°C for H-class and 80°C for B-class). The high-voltage switch has two types: high-voltage load switch and high-voltage vacuum switch. The high-voltage load switch is used in conjunction with the low-voltage feeder switch, while the high-voltage vacuum switch is used with the low-voltage power supply protection box. The high-voltage vacuum switch, low-voltage feeder switch, and low-voltage power supply protection box all have protection functions against leakage, overload, short circuit, phase loss, and undervoltage.