The Caterpillar 3516C is a high-performance, industrial-grade diesel standby generator set engineered for mission-critical backup power in demanding applications such as hospitals, data centers, healthcare facilities, large commercial buildings, and emergency systems. This new unit is rated at 2500 kW (2.5 MW) standby power (approximately 3125 kVA at 0.8 power factor), with configurable options for 12,000V (or other high/medium voltages like 480V/277V), 60 Hz, 1800 RPM operation. It delivers reliable, one-step full-load acceptance to meet NFPA 110 Level 1 requirements for critical systems.

Key Features and Specifications

• Engine: Caterpillar 3516C (or 3516C HD variant), a robust V-16, 4-stroke, water-cooled, aftercooled (ATAAC) diesel engine with electronic unit injection and ADEM™ advanced governor for precise control. It provides proven durability, excellent fuel economy, and compliance with U.S. EPA Stationary Emergency Use standards (often Tier 2 equivalent, with options for Tier 4 Final in some configurations).
• Alternator: Caterpillar SR5 series, brushless, permanent magnet excited (PMG), with Class H insulation, robust motor-starting capability (high short-circuit performance), and broad voltage reconnectability. It ensures superior voltage regulation (±0.5% steady state) and clean power output.
• Performance and Compliance: Accepts 100% rated load in one step; meets ISO 8528-5 transient response and NFPA 110 standards. Factory prototype-tested for reliability under real-world conditions.
• Fuel and Runtime: Includes a large SCAQMD Pre-certified sub-base fuel tank (typically 3,500–5,000+ gallons capacity, UL 142 listed with secondary containment options), fuel priming pump, flexible lines, and features like fuel polishing for extended standby readiness.
• Enclosure and Protection: Outdoor stationary application with sound-attenuated, weatherproof enclosure (often UL 2200 listed), integral vibration isolation, steps/platforms on both sides, roof-packaged Diesel Particulate Filter (DPF) for emissions control, critical-grade silencer, and low noise operation.
• Controls and Monitoring: Caterpillar EMCP 4.x series control panel (e.g., EMCP 4.2) with automatic start/stop, digital readouts, programmable relaying, remote annunciator (16-light panel for remote mounting), jacket water heater, battery charger (35A), coolant level alarms, and advanced diagnostics. Includes electronic governor, permanent magnet generator (PMG), and compatibility with remote monitoring systems.
• Additional Integrated Features: Vibration spring isolators, primary/secondary fuel filters, lube oil drain valve, initial coolant fill (50/50 mix), lead-acid batteries with rack/cables, jacket water heater (208V), Rypos Active Diesel Particulate Filter with silencer/pump (roof-mounted), and more. Supports one-source responsibility from Caterpillar for the full system.
• Services and Support: Includes factory testing/report, shop drawings, operation/maintenance manuals, submittals, two-year standard Caterpillar warranty (electronic), startup supervision/load testing by Certified Technicians, on-site training, phase rotation checks, safety demonstrations, and certified test reports.