Site Load Correction for Load Banks

Wet stacking is the accumulation of unburned fuel residue that develop in the exhaust systems of diesel engines when they operate below minimum levels of load, which is commonly 30% of nameplate capacity. Under these conditions, engines may not reach optimal operating temperature. The resulting fuel combustion process is incomplete, resulting in increased emission of particulates as well as carbon monoxide and other green house gasses. Operating under no-load or light loaded conditions for extended periods promotes wet stacking. Maintaining minimum load levels avoids wet stacking and thus promotes reliability and longevity.


Site load correction optimizes diesel generator performance and avoids wet stacking by automatically supplementing load to run diesel generators at or above their minimum output specification. When loads decrease below a specified threshold, SLC increases the amount of load provided by a load bank. Conversely, when the site load increases beyond the threshold, SLC will de-activate and the gen-set will supply load according to system demand.