2020-12-08 After the diesel generator is running, when the generator price speed reaches the rated speed, the AC exciter stator excitation circuit switch is closed, and when the potentiometer is adjusted to the maximum value, the generator has no output voltage or the output voltage is very low . 1) The remanence of the generator core is missing or too weak. The new unit is subject to long-distance transportation or the generator is placed for too long.