6320-8320 Model GC1000LAH GC2000LAH Engine model 6320ZD 12V320ZD No. of cylinders 6 12 Cylinder bore mm 320 320 Rated speed r/min 428/450 428/450 Noise level (measured one meter off) dB(A) 102 102 Main specifications of generators for gen.-sets Rated output kW/kVA 1000/1250 2000/2500 Powerfactor(lagging) cos