COVER 1034672 - Caterpillar

Rating Conditions
Unless otherwise specified, all ratings are based on SAE J1349 standard ambient conditions:* 100 kPa (29.6 inches of Hg) of pressure* 30 percent relative humidity, and* a temperature of 26°C (77°F).Ratings also apply at AS1501, BS5514, DIN6271, and ISO3046/1 standard conditions.Power for diesel engines is based on:* API gravity of 35 at 15°C (60°F),* fuel LHV of 42.780 kJ/g (18390 Btu/lb) at 29°C (84°F), and* fuel density of 839 g/L (7 lb/US gal)Ratings are gross output ratings- the total output capability of the engine equipped with standard accessories. Standard accessories include pumps for lubrication oil, fuel, and jacket water, and magneto as required. The gross output, minus the power required to drive auxiliary components, equals the net power available for the external (flywheel) load. Typical auxiliary components include cooling fans, air compressors, and charging alternators.Ratings must be reduced to compensate for altitude conditions, according to the applicable engine test specification derating data at normal ambient temperature.Generator Set Engine Ratings
All ratings shown are subject to manufacturing tolerances of plus or minus three percent.Standby Rating
* Typical load factor: 60 percent or less.* Typical operating hours per year: 100.* Typical peak demand: 80 percent of the Standby rated kW, with 100 percent of the rating available for the duration of emergency outage.* Typical Application: Building Service Standby with enclosed sheltered environment.Prime Plus 10 Percent Rating
* Typical load factor: 60 percent or less.* Typical operating hours per year: 500.* Typical peak demand: 80 percent of the Prime Plus 10 Percent rated kW, with 100 percent of the rating available for the duration of emergency outage.* Typical applications: Standby, Rental Unit, Power Module, Unreliable Utility, and Interruptible Rates.Prime Rating
* Typical load factor: 60 to 70 percent.* Typical operating hours per year: no limit.* Typical peak demand: 100 percent of the Continuous rated output is used for less than 10 percent of the operating hours.* Typical applications: Industrial, Pumping, Construction, Peak Shaving, and Cogeneration.Continuous Rating
* Typical load factor: 70 to 100 percent.* Typical operating hours per year: no limit.* Typical peak demand: 100 percent of the Continuous rated kW is used for less than 100 percent of the operating hours.* Typical application: Base Load, Utility, and Cogeneration.
Operating units above the rating definitions will result in shorter service life before overhaul.