| Generator Specification | |
| Generator Model | GGS-25-C |
| Frequency | 50Hz |
| Prime Power | 20kW/25kVA |
| Standby Power | 22kW/27.5kVA |
| Standard Voltage | 230V/400V |
| Dimension (L x W x H) | 1700 x 925 x 1470 mm |
| Weight | 740 kg |
| Engine Specification | |
| Engine Brand | Cummins |
| Model | 4B3.9-G1 |
| Aspiration: | Natural |
| Number of Cylinders | 4 Cylinder In Line |
| Cycle | 4 Stroke |
| Starting Method | Electric Start |
| Displacement | 3.9 L |
| Bore x Stroke | 102 x 120 mm |
| Rated Speed | 1500rpm |
| Compression Radio | 16.6:1 |
| Governor Type | Electronic |
| Alternator Specification | |
| Alternator Model | Stamford PI144E |
| Exciter Type | Self-excited, Brushless |
| Wiring Type | 3 Phase & 4 Wire |
| Cooling Method | Water Cooled |
| Power Factor | 0.8 |
| Protection Grade | IP23 |
| Insulation Grade | Class H |
Source: https://genset-generator-suppliers.com/20kw-25kva-diesel-generator-50hz-cummins-engine-4-stroke.html