Reasons and solutions for the unstable voltage of diesel generator sets?

There are many reasons for the unstable voltage of diesel generator sets. I believe that many users will encounter the following situations in the process of using diesel generator sets. The following table:

Reasons for Voltage Instability of Diesel Generator SetsSolutions and Countermeasures
Part of the wire connection is looseCheck the connection parts of the diesel generator set and repair it.
The voltmeter fails and the voltage is unstable        Replace with new voltmeter.
Bad generator regulator board or unregulated regulatorDouble check that the voltage regulator is not bad or not properly adjusted. Instant replacement or adjustment.
Control panel voltage-current selection switch failureReplace diesel generator switch.
It may be that the speed of the engine is unstable and the voltage is unstable.Adjust or replace diesel fuel system parts to stabilize speed
It may be caused by excessive vibration during the operation of the diesel generator setInstantly check whether the shock pad of the generator set is damaged or the set is unbalanced.
Control panel voltage adjustment resistor failedReplace the voltage regulator resistor.

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