The Atlas Copco QAS 40 ST3 is a diesel generator unit designed for construction and temporary power supply applications. Atlas Copco is a globally recognized manufacturer of industrial machinery and power solutions, serving construction, transport, and industrial sectors with reliable equipment.
This 2023 model is equipped with a four-cylinder Kubota diesel engine running at 1500 rpm, delivering a rated net power of 38 kW with turbocharging and electronic speed control. The swept volume is 3.8 litres. The generator is powered by a LEROY SOMER LSA 42.3 S5 alternator, offering prime power output of 40 kVA / 32 kW at 50 Hz and rated standby power of 44 kVA / 35 kW. Rated voltage is 400 V with a power factor of 0.8 and rated current of 57.8 A. Single-step load capability reaches 85 per cent according to ISO 8528/5 standards.
The fuel tank has a standard capacity of 92 litres with an optional 282-litre capacity available. At full load under PRP conditions, fuel consumption is 9.5 litres per hour, providing fuel autonomy of approximately 9.7 hours at standard capacity or 27 hours with the optional extended tank. The unit weighs 1039 kg empty and measures 2.45 m in length, 1.1 m in width, and 1.48 m in height, making it transportable on standard equipment.
Noise levels are rated at a sound power level of 89–91 dB(A) and a sound pressure level of 63 dB(A) at 7 metres. The alternator has IP 23 degree of protection and H insulation class. The machine holds a valid CE Declaration of Conformity and carries a current inspection certification. The engine has recorded 4729 operating hours. This unit is offered by Pfeifer Heavy Machinery B.V., an official Atlas Copco dealer, and is available with warranty subject to dealer conditions.
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