Energy & Power
Caterpillar G3512E and G3520E gas generator sets
By Anthony Capkun
March 12, 2011
Caterpillar Inc. unveiled a series of performance enhancements for 50Hz Cat G3512E and G3520E gas gensets, as well as a new 60Hz option for the G3520E. These improvements reduce total owning and operating costs for customers through higher power density, improved fuel efficiency and extended preventive maintenance intervals, says Caterpillar. Designed for extended-duty distributed generation and combined heat and power (CHP) applications, G3512E and G3520E gensets have been updated with enhancements to the engine and generator systems and include the “next-generation engine control system”. As a result, says the company, they provide optimized performance to customers via increased electrical and thermal efficiency, enhanced altitude capability, improved transient performance capability, reduced oil consumption and extended oil change intervals. The upgraded 50Hz Cat G3512E features a 20% improvement in power density over the previous model, with a new output rating of 1200 ekW at 0.8 pf (1211 ekW at 1.0 pf). The full-load electrical efficiency has improved by nearly a full point to 42.3%. The enhanced 50Hz Cat G3520E offers an uprate to 2022 ekW at 0.8 pf (2043 ekW at 1.0 pf) with an increase in full-load electrical efficiency to 42.6%, while the 60Hz version provides 2009 ekW at 0.8 pf (2026 ekW at 1.0 pf) with a full-load electrical efficiency of 42.2%.