Overview#
The Blue Star NG265-01 is a 265-kilowatt natural gas / LP standby generator powered by the PSI 14.6L V8 — the step up from the 11.1L inline-six used in the NG200-01. It is rated 265 kWe standby / 250 kWe prime on natural gas (200 kWe standby on LP). The NG265-01 marks the transition to structural steel base construction and pad-type vibration isolation in Blue Star's gaseous product line.
The PSI 14.6L V8#
The PSI 14.6L is an eight-cylinder turbocharged-aftercooled spark-ignition engine:
- V8 configuration — 5.04-inch bore × 5.59-inch stroke, 891 cu in displacement, 10.5:1 compression ratio
- 456 bHp (340 kWm) at 1800 RPM standby
- Structural steel base — higher-rigidity mounting for the increased engine mass and torque
- 4,000W jacket water heater (vs. 2,500W on the 150-class and 3,000W on the 200-class)
- ±0.5% voltage regulation (tighter than the ±1% spec on smaller NG/PS units)
Deration factors: 1.5% per 10°F above 77°F inlet air temperature; 2.5% per 1,000 ft above 1,200 ft altitude.
Alternator configurations#
| Voltage | Phase | Alternator | Connection |
|---|---|---|---|
| 120/240V | 1 | Stamford HCI534E | 12-lead DD |
| 120/208V | 3 | Stamford S4L1D-D41 | 12-lead WYE |
| 240V | 3 | Stamford S4L1D-D41 | 12-lead DELTA |
| 277/480V | 3 | Stamford S4L1D-D41 | 12-lead WYE |
| 347/600V | 3 | Stamford S4L1S-D4 | 4-lead WYE |
When to spec the NG265-01#
- 200–265 kW sustained standby loads on utility natural gas or LP
- Facilities stepping up from the 200-class that need more headroom without moving to the 300 kW tier
- Applications where the LP rating of 200 kWe is the design basis (useful when NG supply reliability is uncertain)
- Sites requiring structural steel base construction for seismic or code compliance
Our service experience#
The PSI 14.6L V8 engine is the same platform used in the NG300-01, so technicians familiar with either unit can service both. Water pump, thermostat, and charge-air cooler hoses are critical service items on the V8 platform. The 3-inch NPT fuel inlet (vs. 1.5-inch on the NG150 and 2-inch on the NG200) requires confirmation of adequate gas supply infrastructure before installation.
