What Is Generator Load Bank Testing?
Load banking is the controlled application of an artificial, calibrated electrical load to a generator to verify that the engine, alternator, cooling system, and control governor can deliver 100% of rated nameplate capacity without overheating or dropping frequency.
Eliminating Harmful "Wet Stacking"
Diesel engines operated frequently at light loads (under 30% to 40% capacity) never achieve optimal internal cylinder combustion temperatures. Unburnt fuel and carbon residues accumulate in the exhaust manifolds, turbochargers, and exhaust piping—a destructive condition known as wet stacking. Over time, wet stacking leads to:
- Loss of horsepower and sluggish transient response
- Excessive black smoke and carbon emissions
- Premature piston ring wear and oil dilution
- Severe risk of exhaust fires
During an annual load bank test, Power Link technicians step up the load incrementally (25%, 50%, 75%, 100%, and 110% overload). This elevates exhaust temperatures to full operating design, completely vaporizing carbon deposits and restoring peak engine efficiency.
Thermal Imaging & Real-Time Logging
Our mobile trailer-mounted load banks (up to 3000 kW) feature digital data logging and infrared thermal imaging. We track alternator winding temperatures, bearing temperatures, voltage stability, and frequency regulation, delivering a certified engineering test certificate upon completion.
