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Atlas Copco QAS28 Yd(S) - Technical Specifications; Engine, Alternator, and Unit Specs

Atlas Copco QAS28 Yd(S)
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INSTRUCTION MANUAL
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Gauge Reading Unit
Ammeter L1 (P1) Below max. rating A
Ammeter L2 (P2) Below max. rating A
Ammeter L3 (P3) Below max. rating A
Voltmeter (P4) Depends upon selector switch V
Frequencymeter (P5)
50 Hz:
Between 50 and 52.5 Hz
60 Hz:
Between 60 and 62.5 Hz
Hourmeter (P6) Adding up h
Fuel level (P7) Above 0 Fuel tank full
Engine temperature (P8) Below max. rating °C
Engine oil pressure (P9) Below max. rating bar
Switch Function Activates at
Engine oil pressure shut down 0.5 bar
Engine coolant temperature shut down 105 °C
50 Hz 60 Hz
Reference
values
Absolute air inlet pressure 100 kPa 100 kPa
Air inlet temperature 27 °C 27 °C
Relative air humidity 60 % 60 %
Generator load Continuous Continuous
Limitations
without
derating
Maximum ambient temperature 40 °C 40 °C
Maximum altitude 1000 m 1000 m
Maximum relative air humidity 85 % 85 %
Minimum starting temperature -18 °C -18 °C
Engine
Type YANMAR 4TNE94-ACG 4TNE94-ACG
Rated net output 20 kW 24 kW
Load speed 1500 rpm 1800 rpm
Electrical system 12 V 12 V
Battery 12 V / 66 Ah 12 V / 66 Ah
Oil circuit capacity 10 l 10 l
Cooling circuit capacity 10 + 1 l 10 + 1 l
Fuel tank capacity 100 l 100 l
Fuse F4 10 A 10 A
Fuel consumption at full load/no load 4.4/1.1 l/h 5.2/1.3 l/h
Maximum run time with fuel tank 18 h 16 h
Alternator
Type ECN 31 1S ECN 31 1S
Rated net output 31 kVA 37 kVA
Voltage line-to-neutral 230 V 220 V
Voltage line-to-line 400 V 480 V
Frequency 50 Hz 60 Hz
Speed 1500 rpm 1800 rpm
Power factor 0.8 0.8
Number of phases 3 + neutral 3 + neutral
Winding connections Star Star
Insulation armature winding, class H H
Insulation field winding, class H H
QAS28 Yd(S):
Sensitivity of earth leak detector 30 mA 30 mA
QAS28 Yd(S):
Maximum diffusion resistance of earthing rod
1 k
1 k
Setting of Q1 40 A 40 A

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