STANDBY POWER is the nominal engine power available at
varying load factors for up to 500 hours per year. This rating
conforms to ISO 8528-1 “limited time running power (LTP)”.
The calculated generator set rating range for standby applications
is based on minimum engine power (nominal –5%) to
provide 100% meet-or-exceed performance for assembled
standby generator sets.
PRIME POWER is the nominal power an engine is capable
of delivering with a variable load for an unlimited number of
hours per year. This rating conforms to ISO 8528-1 “prime