Generator Set Factory tells Professional Knowledge of Diesel Generator

1.What is the power factor of a three-phase generator?

Answer: The power factor is 0.8.

2.Can an output power pipeline compensator be added to improve the power factor?

Answer: No. Charging the battery of the power capacitor can cause fluctuations in the small switch power supply and unit oscillation.

3. Why is it necessary to ensure cleaning of generator room?

Answer: If a diesel engine sucks in dirty air, it will reduce its output power; If the generator sucks in debris such as small stones, it will damage the insulation layer in the middle of the stator rotor gap, and even cause damage.

4.Why is it generally not recommended for customers to choose neutral grounding during installation and use?

Answer: 1) The self adjustment effect of new Cummins 1250kva diesel generator has greatly improved; 2) In practical activities, it was found that the lightning strike equipment failure rate of neutral grounding units is relatively high. 3) The unit with neutral grounding will cover common faults and incorrect grounding devices during load transmission.

5. What issues should be paid attention to when applying ungrounded neutral device units?

Answer: Line 0 is likely to be powered on. Due to the inability to clear the capacitor voltage between the zero and neutral lines of the live line. The actual operator must consider line 0 as a charged body. It cannot be solved according to voltage habits.     

6. Do all diesel generator sets have self maintenance function?

Answer: Not really. At present, there are even some units of the same well-known brand on the market with or without them. When choosing a unit, customers need to figure it out themselves. It is better to write a written report as an attachment to the contract. Generally, low-cost machines do not have self maintenance function.

7.What are the benefits of customers choosing automatic operation but not fully automatic conversion cabinets?

Answer: 1) Once a power outage occurs in the city network, the unit will automatically start to accelerate the manual closing time; 2) If the lighting fixtures are connected in series in front of the air leakage switch, it can also ensure that the lighting fixtures in the computer room are not affected by power outages, making it convenient for employees to use them during work.

8. Is it necessary to maintain three-phase balance of the load required by the generator in application?

Answer: Yes. Large errors cannot exceed 25%, and phase failure operation is prohibited.

9.What are the four strokes of a four stroke diesel engine?

Answer: Breathing, shrinking, working, and exhausting.

10.What is a three-phase short circuit fault? What adverse effects will occur? 

Answer: If the neutral line of the live line does not pass through all loads, an immediate short-circuit fault is a three-phase short-circuit fault. Its adverse effects are very terrifying, and in severe cases, it can cause aircraft damage and human death.

11. Why do the adjustment personnel ensure that the unit is fully fixed and the anchor bolts are intact before adjusting? 

Answer: During long-distance freight transportation, the crew may inevitably have screws and route sockets loose or fall off, which can be harmful to regulation or damage equipment.

12. What should be paid attention to when using diesel generator in winter?

Answer: 1) Pay attention to the fact that the water tank must not freeze. The prevention method is to prepare specialized and efficient rust prevention treatment and antifreeze. 2) It is prohibited to bake with fire. 3) The heating time at full load should be slightly longer before closing.