Basic Knowledge Of Diesel Generator Set

7, the customer bought a self-starting generator set, but did not buy automatic switch cabinet will also have what advantage?  

A: 1) Once the power failure occurs in the city network, the generator set will start automatically to speed up the manual power delivery time;  

2) If the front end of the air switch is connected with a lighting line, it can also ensure that the lighting of the machine room is not affected by power failure, so as to facilitate the operation of the operator;  

8. Does the load of diesel generator set have to maintain three-phase balance in use?  

A: Yes.  The maximum deviation shall not exceed 25%. It is strictly prohibited to run without phase.  

9, what is the meaning of the so-called diesel generator set outlet convenient for three-phase four-wire system?  

A: There are 4 out lines of the generator set, among which 3 are live lines and 1 is zero line.  The voltage between live wire and live wire is 380V.  Between live line and zero line is 220V.  

10. What about the power back of the generator set?  What are the two serious consequences?  

A: the situation of self-provided generator set sending power to the municipal network is called reverse transmission.  There are two serious consequences:  

A) If the power supply of the municipal network is not cut off, and the power supply of the municipal network and the power supply of the generator are not parallel at the same time, the generator set will be destroyed.  If the generator capacity is larger, it will also make the city network concussion.  

B) The municipal network is under maintenance due to power outage, and its self-provided generator sends power back.  Will cause the power supply department maintenance personnel electrocution.  

11. Why should the debugger thoroughly check whether all fixed bolts of the generator unit are properly fixed before debugging the generator?  Are all line interfaces in good condition?  

A: after long distance transportation, sometimes there are screws and line interface loosening or falling down, which will affect debugging in light cases and damage the machine in serious cases.  

12. What conditions can the generator set meet before it closes and transmits electricity?  

A: Water cooled generator set, water temperature to 56 degrees Celsius after starting.  Air cooling unit and body are slightly hot.  The voltage frequency is normal at no load.  Oil pressure is normal.  Before switching power.  

13. How to run with load after power-on?  

A: The load is carried from the largest to the smallest, that is, from the largest load to carry  

14. What is the unloading sequence before shutdown?  

A: this is just the opposite of boot, from small to large, and finally shut down.  

15, why can't take the load shutdown, boot?  

A: Shutdown with load belongs to emergency shutdown, which has great impact on the unit.  Starting with load is a violation of the operation of the generator and electrical equipment will bring damage.  

16. What should be paid attention to when using diesel generators in winter?  

A: 1) Pay attention to the water tank must not freeze, prevention methods add special long-term anti-rust, anti-freeze liquid or use electric heating equipment to ensure that the room temperature above freezing point.  

2) No open fire baking.  

3) The no-load preheating time of the generator set should be a little longer before power can be sent.  

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