1. What are the conditions for the parallel use of two generating sets? What device is used for parallel work?
Answer: THE CONDITION THAT USES PARALLEL MACHINE IS TWO MACHINE INSTANTANEOUS voltage, FREQUENCY, PHASE IS same. Commonly known as "three at the same time". A special parallel device is used to complete the parallel work. Generally, fully automatic cabinets are recommended. Try not to manually parallel the machine. Because the success or failure of manual integration depends on human experience.
2, what is the power factor of the three-phase generator? Can a power compensator be added to increase the power factor?
A: The power factor is 0.8. No, because the charging and discharging of capacitors will cause fluctuations in the small power supply. And unit oscillation.
3. Why do we require customers to tighten all electrical contact parts after the unit runs for 200 hours?
Answer: Diesel generator set is a vibration working device. And a lot of domestic production or assembly of the machine should use double nuts of useless. The use of spring gaskets is useless, once the electrical fasteners loose, will produce a great contact resistance, resulting in abnormal operation of the unit.
4. Why must the generator room be clean and the ground free from floating sand?
Answer: if the diesel engine inhales dirty air, the power will fall; If the generator inhales sand and other impurities, the insulation between the stator gap will be damaged, and the heavy will lead to burn.
5, why since 2002, our company generally does not recommend users to use neutral grounding when installing?
Answer: 1) The self-regulation function of the new generation generator is greatly enhanced; 2) In practice, it is found that the lightning failure rate of neutral grounding unit is high; 3) High grounding quality requirements, ordinary users can not do. Unsafe working ground is not as good as ungrounded; 4) The unit with neutral ground will cover up the leakage fault and grounding error of the load, and these faults and errors can not be exposed in the case of large current power supply of the mains.
