Under non-rated on-site conditions and special loads, the rated power of Cummins generator sets needs to be corrected. Dongfeng Cummins generator set price, Xiamen ZTA Power tells what the correction methods are:

1 Power correction of ambient temperature

When the ambient temperature is too high, the air density decreases, the amount of oxygen during diesel engine combustion decreases, and the combustion efficiency decreases, thereby reducing the mechanical output power of the diesel engine; at the same time, the generator needs cold air to cool the winding when it is working. When the ambient temperature is too high, the cooling effect is reduced, and the internal temperature of the generator winding increases. In order to ensure that the winding temperature of the generator is within the allowable range, the output power of the generator must also be reduced.

The output power of diesel engines and generators of various brands is affected by the ambient temperature. Due to different designs, the correction parameters are also inconsistent; the same brand, different models, and different speed control systems have different correction parameters. Generally, the correction parameters of the original diesel engine manufacturer should be used as the standard. Usually, the power loss can be calculated according to the output power decrease of 3%~4% for every 5℃ increase in ambient temperature above 40℃. However, it should be noted that the nominal power of some manufacturers' units is based on the output power at an ambient temperature of 25℃.