Engine speed 1,800r/min, altitude below 1,525m (5,000ft), ambient temperature below 40°C (104°F).
|Altitude||Atmospheric pressure||Air temperature|
Multiply corresponding correction factor by rated power
According to GB/T2819, at an altitude above 1,000m and below 3,000m, the power correction approach shall be used. At an altitude above 3,000M, it is recommended to use dedicated models for high altitude.
Since power correction shall only be adopted to gensets with higher power, and the thin air at high altitude will cause reduction of the air inflow, reduced air-fuel ratio, poor burning, power decline, dark smoke coming out from the engine, heavy carbon deposition, early failure of engine oil, lubrication deterioration, increasing wear of parts as well as increased exhaust temperature, thus resulting in significantly higher engine failure rate.
Dedicated engines for high altitude are designed with reasonable air fuel ratio, reasonable turbocharger and incremental intake air filter assembly.
Cooling system is also customized. It has increased the pressure of water tank pressure cap, enhanced the cooling system’s resistance to pressure and solved the problem of reduced boiling point of coolant due to the decreased atmospheric pressure, thus ensuring normal operation of the cooling system.
Dedicated generators for high altitude are designed in package. In addition to the impact of altitude environment on the diesel engines and the alternators, the impact on low-voltage electrical equipment shall also be considered.
Since the electric clearance and creepage distance will be reduced as the altitude rises, derating shall be considered for low-voltage electric equipment below 690v.