What is the voltage instability of Yuchai diesel generator?

There will be various uncertainties in the operation of Yuchai diesel generators. What is the voltage instability of a diesel generator?

1. The speed of the diesel generator set will increase after starting to observe whether the voltage and frequency are stable. As the speed increases, the voltage and frequency fluctuate greatly. Operation, failures may occur in the control box and actuator.

2. Using a multimeter to measure the exciter and all related circuits is abnormal.

3. Adjust the stability of the AVR control board. You cannot delete more diesel generator information. Please note

4. After the generator is turned off, it is charged with a 6V battery. The starting speed of the diesel engine is 750 r / min. The generator starts to boost. The fluctuation range of voltage and frequency meets the technical requirements of the generator set.

5. After starting the diesel engine, observe the frequency and voltage response of the generator and find that the frequency and voltage of the generator are unstable.

6. After stopping, the starting speed of the diesel engine is increased (increasing the fuel supply of the governor). When the generator frequency and voltage are stable, the diesel engine restarts to about 800 r / min. However, when the control handle is reduced to start the diesel engine, the frequency and voltage of the generator are unstable. After repeated tests, it is concluded that the starting speed of the diesel generator set must be within the range of 750 ~ 800 r / min to generate electricity, and the conclusion is that the fluctuation range of voltage and frequency meets the requirements.