There are three reasons for the unbalanced output voltage of diesel generator set:
1. The three-phase load is unbalanced.
2. The generator winding has a slight short circuit.
3. Generator manufacturing defects (unequal number of turns of three-phase winding).
At this point, the following situations may occur:
1. The generator set output power decreases and cannot meet the user's power needs
2. Three-phase The voltage is asymmetrical, causing a shift in the neutral point potential of the generator
3. Excessive neutral current will increase the operating temperature of the distribution transformer, and in severe cases the transformer will be burned out
4. Increase some phase voltages and reduce other phase voltages
5 Burn the generator and affect the normal power supply
Therefore, you must. do attention when using the diesel generator. The three phases cannot be unbalanced. If its output power cannot be changed, you should choose to change the wiring method to avoid damage to the generator set.