Oil and gas drilling is a complex task that requires specialized power generation equipment. Cat 3500 generator sets are specifically designed for drilling operations of electric AC rigs. The 3500 platform carries decades of field experience in drilling operations across a wide variety of environmental conditions.3516 land drilling generator set. Ratings: 1256 ekW (1835 kVA) @ 60 Hz (1200 rpm). Not emissions certified, available for non-regulated areas.