11. After the operating electrician takes over the diesel generator set, which three points must first be verified?
Answer: 1) Verify the real useful power of the unit. Then determine the economic power and reserve power. The method of approving the real useful power of the unit is: the 12-hour rated power of the diesel engine is multiplied by 0.9 to obtain a data (kw). If the rated power of the generator is less than or equal to this data, the rated power of the generator is determined as the real useful power of the unit If the generator rated power is greater than this number
According to data, the data must be used as the real useful power of the unit.
2) Verify which self-protection functions the unit has.
3) Check whether the power wiring of the unit is qualified, whether the protective grounding is reliable, and whether the three-phase load is basically balanced.
12. There is an elevator starting motor of 22KW, what size generator set should it be equipped with?
Answer: 22*7=154KW (the elevator is a direct load starting model, and the instantaneous starting current is generally 7 times the rated current to ensure that the elevator moves at a constant speed). (That is, at least 154KW generator set should be equipped)
13. How to calculate the best power (economic power) of the generator set?
Answer: P best=3/4*P rated (that is, 0.75 times the rated power).
14. According to the national regulations, how much higher the engine power of a general generator set should be than the generator?
Answer: 10℅.
15. The engine power of some generator sets is expressed in horsepower. How to convert horsepower to international unit kilowatts?
Answer: 1 horsepower = 0.735 kilowatts, 1 kilowatt = 1.36 horsepower.