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dingbo@dieselgeneratortech.com
+86 134 8102 4441
Jul. 24, 2025
Technical data of 120kW/150kVA Cummins Diesel Generator Set
Genset Model: DB-120GF
Rated power:120kW/150kVA
Standby power:130kW/162.5kVA
Engine: Cummins QSB5.9-G31
Alternator: Shanghai Stamford GR270EX
Controller: SmartGen HGM6110CAN-4G-G
| Configuration Features | |
| Engine: Cummins QSB5.9-G31, meet GB 20891-2014 China Stage III emission requirements | Alternator: Single bearing, IP23 protection, H class insulation. |
| 50℃ original water radiator, cooling fan, with fan safety cover | Air filter, fuel filter, oil filter |
| Chassis and vibration absorber | Standard control panel (integrated) |
| 24V charging generator | Gas exhaust bellows, gas exhaust elbows, industrial silencers and standard parts for connections |
| Electronic Governor | Accompanying documentation |
| Maintenance-free lead-acid batteries and battery connection cables | |
| Different voltage levels | ||||||
| Voltage (V) | Frequency (Hz) | Phase | Power factor | Current( A) | Standby power | Prime Power |
| 440/254 | 50 | 3 | 0.8 | 197 | 130kW/162.5kVA | 120kW/150kVA |
| 415/240 | 50 | 3 | 0.8 | 207 | 130kW/162.5kVA | 120kW/150kVA |
| 400/230 | 50 | 3 | 0.8 | 217 | 130kW/162.5kVA | 120kW/150kVA |
| 380/220 | 50 | 3 | 0.8 | 228 | 130kW/162.5kVA | 120kW/150kVA |
Prime power (PRP): is available for an unlimited number of annual hours in variable load application, in accordance with GB/T 2820 (eqv ISO 8528); A 10% overload capacity is available for a period of 1 hour within a 12-hour period of operation.
Standby power (ESP): is the maximum power limit for emergency use and cannot be overloaded, i.e. the fuel cut-off power.
| Engine Specifications | ||
| Manufacturer & engine Model: | Cummins QSB5.9-G31 | |
| Air intake system: | Turbocharged & Charge Air cooled | |
| Fuel system: | High Pressure Common Rail System | |
| Cylinders no. & Type: | 6 Cylinders, in-line | |
| Displacement: | 5.9L | |
| Bore x Stroke: | 102×120mm | |
| Compression Ratio: | 17.3:1 | |
| Engine Speed: | 1500rpm | |
| Engine minimum power: | 132kW /177hp | |
| Engine maximum power： | 145kW/ 194hp | |
| Governor system: | EFI | |
| Exhaust system | ||
| Exhaust Gas Flow: | 10.55kg/min | |
| Exhaust Gas Temperature: | 492℃ | |
| Maximum Back Pressure: | 10kpa | |
| Air intake/ Exhaust system | ||
| Maximum Intake Air Restriction: | 6.2kPa | |
| Inlet air flow: | 8.56 m³/min | |
| Fuel system | ||
| Fuel Consumption @ 100%prime power | 205 g/kW•h | 31.5L/h |
| Fuel Consumption @ 75%prime power | 226 g/kW•h | 26.0L/h |
| Fuel Consumption @ 50%prime power | 239g/ kW•h | 18.3 L/h |
| Lubrication system | ||
| Total lubrication system capacity: | 16.4L | |
| Maximum lube oil flow to all accessories： | 7.5 L/min | |
| Cooling System | ||
| Coolant Capacity - Engine Only: | 7.2L | |
| Maximum Top Tank Temperature for Prime Power: | 104°C | |
| Alternator Specifications | |
| Meet BS5000, VDE0530, NEMAMG1-22, IEC34, CSA C22 and AS1359 standards | |
| Technical Data | |
| Phase: | 3 |
| Wire connecting method: | Y type, 3 phase 4 wire |
| Bearing： | 1 |
| Power Factor: | 0.8 |
| Protection: | IP23 |
| Altitude requirements: | ≤1000m |
| Exciter type: | Brushless Self-Excited |
| Insulation/temperature rise class: | H/H |
| Waveform TIF: | <50 |
| Waveform THF: | <2% |
| Rated Power/Capacity: | 150kVA |
| Efficiency: | 91.9% |
| Genset Technical Specifications | |
| Voltage adjustment rate: | ≥±5% |
| Steady-state voltage regulation rate: | ≤±1% |
| Transient voltage deviation (100% sudden power reduction): | ≤+25% |
| Transient voltage deviation (sudden power increase): | ≤-20% |
| Voltage stability time (100% sudden power reduction): | ≤6S |
| Voltage stability time (sudden power increase)： | ≤6S |
| Frequency adjustment rate: | 0-5% |
| Steady-state frequency band: | ≤1.5% |
| Transient frequency deviation (100% sudden power reduction)： | ≤+12% |
| Transient frequency deviation (sudden power increase)： | ≤-10% |
| Frequency stability time (100% sudden power reduction): | ≤5S |
| Frequency stability time (sudden power increase): | ≤5S |
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