1. Common unit
These types of generator sets operate year-round, usually located in areas close to the power grid (or city power) or industrial and mining enterprises to meet the construction, production and domestic electricity consumption of these places. In areas with relatively fast economic development, due to the construction of the power grid can not keep up with the needs of users, a common diesel generator set with a short construction period is set up to meet the needs of users. These generator sets generally have a large capacity, provide continuous power supply to non-constant loads, have no limit on the duration of continuous operation, and allow 1 h of overload supply time every 12 hours. The overload capacity is 10% of the rated output power. . Due to its long operating time and heavy load, this type of unit is adjusted to a lower point relative to the allowable power of the unit's ultimate power.
2. Backup unit
Under normal circumstances, the power required by the user is supplied by the mains. When the mains is cut off by electricity or the power supply is interrupted for other reasons, the generator set is set up to ensure the basic production and life of the user. Such generator sets are mainly located in telecommunications departments, hospitals, industrial and mining enterprises with tight supply of electricity, airports and TV stations. This type of unit is always in standby and provides continuous power supply to non-constant loads.
3. Emergency unit
For the use of electrical equipment that will cause large losses or personal accidents when the mains supply is suddenly interrupted, emergency generator sets are often provided to provide emergency power supply to these devices, such as fire protection systems for high-rise buildings, evacuation lighting, elevators, control systems for automated production lines, and important communication systems. And medical equipment that is doing important surgery with the patient, etc. Such units should be able to start up quickly when the mains supply is suddenly interrupted, and provide a stable AC power supply to the load in the shortest time to ensure timely supply of power to the load. This type of unit requires a high degree of automation.