Which diesel generator checks should be done by electricians?

As we all know, diesel generators must pass strict inspection before they are put into operation. Strictly speaking, some tests are not for everyone and need to be performed by professionals. For example, some inspections must be carried out by professional electricians. Which diesel generator checks should be done by electricians?
1. Check the actual useful power of the diesel generator, and then determine the economic power and standby power. Check the actual effective power of the unit method as follows: Multiply the 12-hour rated power of the diesel engine by 0.9 to obtain a figure (kw). If the rated power of the generator is less than or equal to this figure, the rated power of the generator is determined to be the actual useful power of the unit; If the rated power of the generator is greater than this figure, this figure must be used as the actual useful power of the unit.
2. Check what kind of self-protection function the diesel generator has.
3. Check whether the power cable of the diesel generator is qualified, whether the protection grounding is reliable, and whether the three-phase load is basically balanced.
The above three tests are highly professional and relatively dangerous. Especially when testing the power connection of the unit, if you are not careful, it is easy to have a safety accident. Non-professional electricians should not easily operate.