Why must the generator room be clean and free of floating sand on the ground?
Answer: If the diesel engine inhales dirty air, the power will decrease; if the generator inhales impurities such as sand particles, the insulation between the stator and rotor gaps will be damaged, and in severe cases, it will be burned.

2. Are all diesel generator sets with self-protection function?
Answer: No. At present, some units of the same brand in the market have or not. Users have to figure it out for themselves when purchasing a unit. It is best to put it in writing as an attachment to the contract. Generally, low-cost machines do not have self-protection functions.

3. How to identify fake and inferior domestic diesel engines?
Answer: First check whether there is a factory certificate and product certificate. They are the "identity certificate" of the diesel engine when it leaves the factory, and they are necessary. Check the three numbers on the certificate again
1) Nameplate number;
2) The body number (in kind, it is generally on the plane machined by the mechanical cutting of the flywheel end, and the font is convex);
3) The nameplate number of the oil pump. Check these three major numbers with the actual numbers on the diesel engine, and they must be accurate. If any doubts are found, these three serial numbers can be reported to the manufacturer for verification.

4. After the electrician takes over the diesel generator set, which three points should be verified first?
Answer: 1) Verify the real useful power of the unit. Then determine the economic power, and reserve power. The method of verifying the real useful power of the unit is: multiply the rated power of the diesel engine for 12 hours 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 rated power of the generator is greater than this data, this data must be used as the real useful power of the unit;
2) Verify which self-protection functions the unit has;
3) Verify whether the power wiring of the unit is qualified, whether the protective grounding is reliable, and whether the three-phase load is basically balanced.

5. How to calculate the optimal use power (economic power) of the generator set?
Answer: P best=3/4*P rated (ie 0.75 times rated power).

6. The state stipulates that the engine power of the general generator set should be larger than the generator power? Answer: 10℅.

7. The engine power of some generator sets is expressed in horsepower. How to convert between horsepower and international unit kilowatt?
Answer: 1 horsepower = 0.735 kilowatts, 1 kilowatt = 1.36 horsepower.

8. Why is the diesel generator set not allowed to run for a long time below 50% of the rated power?
A: The oil consumption is increased, the diesel engine is easy to carbonize, the failure rate is increased, and the overhaul period is shortened.


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