Reasons for Weak Rotation of Diesel Generator during Starting

In modern society, the diesel generator set is widely used in various industries as an emergency or standby diesel generator set. In the normal use process, the diesel generator set can generally be started smoothly within a few seconds, and sometimes it is normal to start it successfully once or twice. However, if you press the start button of the diesel generator set, the diesel engine rotates slowly, which shows that it is weak or unable to rotate, it should be considered as a starting fault. The multimeter should be used immediately to check whether the battery voltage reaches the rated voltage.

What is the relationship between the failure of the diesel generator set to start and the battery voltage? In fact, this is because the connection between the electronic control module ECM and the EMCP control panel for the whole unit state is maintained by the battery power supply when the generator is in the automatic state at ordinary times. If the battery voltage is too low, the unit will be difficult to start or cannot start directly.

When the external battery charger fails, or the internal self discharge of the battery will cause the battery power not to be supplemented, resulting in a voltage drop. The battery must be charged at this time. The charging time depends on the discharge of the battery and the rated current of the charger. In case of emergency or the battery cannot be charged or stored, the battery must be replaced. In view of the above situation, Dingbo Power recommends that you provide a fully automatic special charger for the generator set to ensure that the battery always maintains a constant voltage.

In addition, the voltage of the battery shall be measured at least once a week. For wet battery, it is also necessary to check whether the electrolyte of the battery is between the lowest and highest scale lines irregularly, otherwise, it is necessary to adjust to avoid insufficient charging of the battery or liquid overflow during charging. If the loss of electrolyte and acid components in the battery is not timely replenished due to improper operation at ordinary times, it is easy to reduce the power of the battery and reduce its service life.

Low battery voltage is one of the reasons why diesel generating set cannot be started. In addition, the poor contact between the battery terminal and the connecting cable, the loose connection of the positive and negative cables of the starting motor, the failure of the oil supply system or the failure of the diesel engine air system may also cause the diesel generator set to be unable to start. When encountering the starting failure of the unit, the user should check the cause one by one according to the phenomenon and repair it in a timely manner. If you don't know how to solve it, please contact Dingbo Power, and we will serve you wholeheartedly.