Cat G3520H 2,500 kW Natural Gas Generator Set, 60 Hz
Specifications
| Make | Caterpillar |
|---|---|
| Model | G3520H |
| Dimensions | 302 x 86 x 97 in (7.67 x 2.18 x 2.46 m) |
Description
A Cat G3520H continuous-duty natural gas generator set, rated 2,500 ekW at 60 Hz. It pairs Caterpillar’s 20-cylinder G3520H gas engine with a Cat SR5 generator and is built to run around the clock: up to 45% electrical efficiency, and up to 86% total efficiency when the engine heat is recovered in a combined heat and power (CHP) system. It turns pipeline natural gas into dependable, low-cost electricity for prime power, CHP, microgrids and greenhouse operations.
About these figures. The ratings below are Caterpillar’s published specifications for the G3520H 60 Hz model. Hours, configuration, service history and condition of this particular unit: call and we will go through them with you.
About the photo. Photo shown is Caterpillar’s representative image of the G3520H model, not this specific unit. Ask us for photos of the actual generator set.
Full specifications
| Continuous rating | 2,500 ekW at 1.0 pf (2.5 MW), 60 Hz |
|---|---|
| Engine speed | 1,500 rpm, with speed-increasing gearbox for 60 Hz |
| Transient performance | ISO 8528-5 Class G1 with specified load steps |
| Electrical efficiency | 45% |
| Thermal efficiency | 41% |
| Total efficiency (CHP) | 86% |
| Fuel | Natural gas; hydrogen blends up to 25% (hydrogen-capable retrofit kit available) |
| Fuel rate, 100% load (with fan) | 7,583 Btu/ekW-hr (8.00 MJ/ekW-hr) |
| Fuel rate, 75% load (with fan) | 7,728 Btu/ekW-hr (8.15 MJ/ekW-hr) |
| Fuel rate, 50% load (with fan) | 8,073 Btu/ekW-hr (8.52 MJ/ekW-hr) |
| Fuel pressure at control valve | 10.2 to 34.5 kPa (1.5 to 5.0 psi) |
| Fuel heating value range | 31.5 to 47.2 MJ/Nm³, dry pipeline natural gas |
| Engine | Cat G3520H, V20, 4-stroke-cycle gas engine |
| Aspiration | Turbocharged |
| Displacement | 5,956 in³ (97.5 L) |
| Bore x stroke | 6.7 x 8.5 in (170 x 215 mm) |
| Compression ratio | 12.1:1 |
| Engine control and governor | ADEM™ A4: ignition, governing, air/fuel ratio and engine protection |
| Genset control panel | EMCP 4.3 |
| Telematics | Cat Connect (Ethernet, satellite, cellular) |
| Generator | Cat SR5 (offered in medium and high voltage; voltage of this unit to confirm) |
| Dimensions (L x W x H) | 302 x 86 x 97 in (7.67 x 2.18 x 2.46 m) |
| Dry weight (genset) | 54,675 lb (24,800 kg) |
Why the G3520H stands out
- Top-tier efficiency. Up to 45% electrical, 41% thermal and 86% total efficiency, with a full-load fuel rate of about 7,583 Btu/ekW-hr.
- Built for continuous duty. Rated to run at full continuous output for 100% of operating hours, with a robust high-speed block, low oil consumption and extended service intervals that cut overhaul costs and downtime.
- Hydrogen ready. Runs on natural gas blended with up to 25% hydrogen, and a hydrogen-capable retrofit kit is available.
- Low-pressure fuel system. Designed for dry pipeline natural gas at 10.2 to 34.5 kPa (about 1.5 to 5 psi) at the fuel control valve.
- One-module engine control. ADEM™ A4 manages ignition, governing, air/fuel ratio and engine protection, paired with an EMCP 4.3 genset control panel and Cat Connect telematics (Ethernet, satellite and cellular).
- Strong transient response. Capable of ISO 8528-5 Class G1 performance with specified load steps.
Configuration
Caterpillar built the G3520H in four 60 Hz configurations: Humidity/Fuel Tolerant or High Efficiency, each with or without engine-driven pumps. Continuous ratings vary slightly between them. Ask us which configuration this unit is.
Ideal applications
Continuous prime power, combined heat and power, utility peaking and microgrids, greenhouse and agricultural operations, manufacturing plants, hospitals, campuses, and data centers that need reliable on-site generation.
Parts, service and enquiries
The G3520H is supported by the global Cat dealer network for parts and service. For hours, service history, configuration, price or a viewing, call (519) 796-5952 or email jeovanni.pasquale@gmail.com.
