9、为什么我们要求客户机组每运行200小时后要进行一项所有电器接触件的紧固工作？Why do we require the customer's unit to perform a tightening work on all electrical contacts every 200 hours of operation?

9. Why do we require the customer's unit to perform a tightening work on all electrical contacts every 200 hours of operation?

Answer: The diesel generator set belongs to the vibration working unit. Moreover, many domestically produced or assembled units that require double nuts are useless. Units that require spring washers are useless. Once the electrical fasteners loosen, it will generate a large contact resistance, causing abnormal operation of the unit

11. How to match the power of UPS and diesel generator to ensure stable UPS output?

Answer: 1) UPS is generally expressed in terms of apparent power KVA. First, multiply it by 0.8 and convert it to the unit KW that is consistent with the active power of the generator

2) If a general generator is used, the power of the generator is determined by multiplying the active power of the UPS by 2, that is, the power of the generator is twice the power of the UPS

3) If a generator with PMG (permanent magnet generator excitation) is used, the generator power is determined by multiplying the UPS power by 1.2, that is, the generator power is 1.2 times the UPS power

12. Is the problem with an unstable frequency and voltage of a generator set caused by the engine or the generator?

Answer: It's about the engine

13. Is the problem with the frequency stability and voltage instability of a generator set caused by the engine or the generator?

Answer: It's about the generator (electric ball)

14. What is the reason for the demagnetization of the generator and how should it be handled?

Answer: If the generator is not used for a long time, the residual magnetism contained in the iron core before leaving the factory will be lost, and the excitation coil cannot establish the expected magnetic field. At this time, the engine will run normally but cannot generate electricity. There are many new or long-term unused units. Solution:

Press the excitation button if there is one, and magnetize it with the battery if there is no excitation button;

15. What is the load sequence after powering on?

Answer: Load is carried in order from high to low

16. What is the unloading sequence before the machine?

Answer: Remove the load from small to large and finally shut down