Atlas Copco QAS 275-325, Instruction Manual

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Technical specifications
Technical specifications for QAS 275 units
Readings on gauges
Settings of switches
Specifications of the engine/alternator/unit
Gauge Reading Unit
Ammeter L1-L3 (P1-P3) Below max. rating A
Voltmeter (P4) Below max. rating V
Switch Function Activates at
Engine oil pressure Shut down 0.5 bar
Engine coolant temperature Shut down 103°C
50 Hz 60 Hz
Reference conditions 1) 4)
Rated frequency 50 Hz 60 Hz
Rated speed 1500 rpm 1800 rpm
Generator service duty PRP PRP
Absolute air inlet pressure 100 kPa 100 kPa
Relative air humidity 30% 30%
Air inlet temperature 25°C 25°C
Limitations 2) Maximum ambient temperature 50°C 50°C
Altitude capability 4000 m 4000 m
Maximum relative air humidity 85% 85%
Minimum starting temperature unaided -15°C -15°C
Minimum starting temperature with coolant heater (optional) -25°C -25°C
Performance data
2) 3) 4) 5)
Rated active power (PRP) 3ph 220 kW 228 kW
Rated power factor (lagging) 3ph 0.8 cos

0.8 cos
