Some countries and regions are in a situation of serious shortage of electricity supply, and the power supply is also very uncertain, or some of them don't have power supply, such as the island far away from the mainland, the remote pastoral areas, rural areas, desert plateau of the barracks, workstations, radar station, etc. They all need to configure self-provided power supply.
Generators for emergency standby power often are be set for the electric equipment, which will cause significant loss or personal injury by sudden cut-off of mains power, such as fire control system of high-rise building, evacuation lighting, elevator, automatic production line control system and important communication system, etc. These type generators need to equip automatical start-up system, which has high demand of automation.