Many users have a habit of thinking that the rated power of the load equipment and the power that should be equipped when purchasing a generator set are not entirely correct. Because in order for a rational load to operate normally, it involves starting the current. This makes the power of the corresponding equipment's generator set much greater than the rated power of this type of load!
The vast majority of commonly used electrical equipment are resistive loads and rational loads.
Resistive load: When the device is operating, it is a pure resistive load called a "resistive load". Common resistive load devices include iodine tungsten lamps, incandescent lamps,
Rational load: In general, a load with inductive parameters, that is, a load that matches the current leading voltage characteristics, is considered a rational load. Common rational load devices include transformers, compressors, motors, water pumps, fans, relays, fluorescent lamps, high-pressure sodium lamps, mercury lamps, metal halide lamps, etc. Household appliances such as air conditioners, refrigerators, washing machines, vacuum cleaners, treadmills, microwaves, etc.
Of course, there is also a type of capacitive load: generally, a load with capacitive characteristic parameters, that is, a load that matches the voltage leading current characteristics, is called a capacitive load. Capacitive load and rational load have similar properties. Common fine electronic devices such as LCD TVs and computers are generally considered capacitive loads. However, due to its small power, there is not a high requirement for starting current when equipping a generator set. Generally, it only needs to wait for power equipment, but instead requires the generator set to have a stable voltage output function. Large capacitive loads are generally applied in places with large electrical loads. The primary purpose is to improve power factor, reduce losses, and improve the ability of equipment to carry loads. Parallel connection of appropriate capacitors is used to "offset" the impact of inductance on the "occupation" of reactive power, and its effect is primarily used to compensate for the power factor of the circuit.
In summary, if we are equipping generator sets for common rational load equipment such as compressors, motors, water pumps, and fans, we need to consider the impact of starting current. Because the starting current of such equipment is generally 4-7 times the rated current, and the output rated current of the generator set is generally 2 times the output power. Therefore, when equipping such equipment with a generator set, it is necessary to ensure that the output power of the generator set can be 2-3.5 times the rated power of the load equipment.
Small gasoline generators, gas generators with weaker overload capabilities, and diesel generators with lower quality are generally equipped with corresponding generator sets at 3-4 times the rated power of the equipment. Otherwise, not only will the load equipment not operate properly, but there may also be serious consequences of burning the generator set!
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