Atlas Copco QAS 500 Volvo S2A APP - Derating Table

- 96 -
Derating table (in %, 100% is declarated power at “Performance data”)
50 Hz
Notes
1) Reference conditions for engine performance to ISO 3046-1.
2) See derating diagram or consult the factory for other conditions.
3) At reference conditions unless otherwise stated.
4) Rating definition (ISO 8528-1):
LTP: Limited Time Power is the maximum electrical power which a generating set is capable of delivering (at variable load), in the event of a
utility power failure (for up to 500 hours per year of which a maximum of 300 hours is continuous running). No overload is permitted on these
ratings. The alternator is peak continuous rated (as defined in ISO 8528-3) at 25°C.
PRP: Prime Power is the maximum power available during a variable power sequence, which may be run for an unlimited number of hours per
year, between stated maintenance intervals and under the stated ambient conditions. A 10% overload is permitted for 1 hour in 12 hours. The
permissible average power output during a 24h period shall not exceed the stated load factor of 70%.
5) Specific mass fuel used: 0.86 kg/l.
Height
(m)
Temperature
(°C)
0 5 10 15 20 25 30 35 40 45 50
0 100 100 100 100 100 100 100 100 100 90 80
500 100 100 100 100 100 100 100 100 100 90 80
1000 100 100 100 100 100 100 100 100 100 90 80
1500 100 100 100 100 100 100 100 95 95 90 80
2000 95 95 95 95 95 95 95 95 90 90 80
2500 90 90 90 90 90 90 90 85 85 80 80
3000 85 85 85 85 85 85 85 85 85 80 80
3500 65 65 65 65 65 65 65 65 65 65 65
4000 50 50 50 50 50 50 50 50 50 50 50