Blue Star Power Systems · Gaseous Product Line (PSI 14.6L)
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Blue Star NG350-02
350 kW standby · Natural Gas · Liquid-cooled
350 kW natural gas standby generator from Blue Star Power Systems. PSI 14.6LHO high-output V8, DSE DCP7310 controller, structural steel base, three-phase 208-600V. Natural gas only — no LP rating.
The Blue Star NG350-02 is a 350-kilowatt natural gas standby generator built around the PSI 14.6LHO — the high-output variant of the 14.6L V8 used in the NG265-01 and NG300-01. The NG350-02 is a natural-gas-only model; no LP rating is published. It occupies the top of the 14.6L platform before stepping up to the PSI 21.9L V12 at 400 kW.
The 14.6LHO is a higher-demand variant of the 14.6L V8. Service procedures and parts are shared with the NG265-01 and NG300-01. The NG350-02's higher heat rejection (420,000 BTU/hr radiated to ambient vs. 324,840 for the NG265-01) requires confirmation that the installation space provides adequate ventilation airflow — 29,970 CFM for a radiator-cooled OPU installation.
Tell us about the application — kW, voltage, application, install timeline — and we'll respond within one business day with budgetary pricing, lead time, and any sizing notes.
Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.
Estimate runtime on this tank
Fuel demand at 75% load
3,675,000 BTU/hr≈ 3675.0 cf/min @ 1,000 BTU/cf
On utility natural gas the runtime is generally unlimited provided the supply line and meter can deliver this BTU/hr at the engine's required inlet pressure (typically 5–14" WC residential, up to 5 psi commercial). Confirm against the OEM's published fuel-pressure spec.
Service intervals
Manufacturer-recommended intervals for the Blue Star NG350-02 under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.
Oil & filter
Every 250 hours or 12 months
Coolant change
Every 4000 hours
Air filter
Every 1000 hours
Spark plugs
Every 1500 hours
Major overhaul
≈ 15,000 hours
Load bank test
Every 12 months
Common failure modes
What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.
Component
Symptom
Typical hours
Severity
Turbocharger
Loss of power, excessive smoke under load
12,000+
moderate
Spark plugs / ignition
Misfire at load, rough running
1,500+
minor
Charge air cooler
Reduced power output, elevated intake temps
10,000+
moderate
Battery
Failed to start during outage
8,760+
minor
Frequently Asked Questions
What is the standby rating of the NG350-02?
The Blue Star NG350-02 is rated 350 kWe standby on natural gas at 60 Hz / 1800 RPM. The PSI 14.6LHO (high-output) V8 produces 536 bHp (400 kWm) at standby. There is no LP rating — the NG350-02 is a natural-gas-only model.
Why is there no LP rating on the NG350-02?
The NG350-02 uses the PSI 14.6LHO high-output variant of the 14.6L V8, tuned specifically for natural gas at 350 kWe. At this output level, LP fuel's lower volumetric energy density does not support the same standby rating, and Blue Star does not publish an LP rating for this model. For LP operation at similar kW, consider the NG300-01 (200 kWe LP standby) or NG400-01 (300 kWe LP standby).
How does the 14.6LHO differ from the standard 14.6L in the NG265/NG300?
The PSI 14.6LHO is the high-output variant of the 14.6L V8, rated 536 bHp (400 kWm) vs. 456 bHp (340 kWm) for the standard 14.6L. Both share the same 891 cu in (14.6L) displacement, 5.04-inch bore x 5.59-inch stroke, and 10.5:1 compression — the difference is in fuel system calibration and boost pressure to achieve higher natural gas output.
What alternators does the NG350-02 use?
For 208V and 240V three-phase, the Stamford S4L1D-F41 (WYE and DELTA respectively). For 480V three-phase, the Stamford S4L1D-E41. For 600V three-phase, the Stamford S4L1S-E4. All carry 125°C standby temperature rise and ±0.5% voltage regulation.
What are the dimensions of the NG350-02?
The OPU measures 140 x 78 x 90 in (L x W x H) and weighs 9,425 lbs — same footprint as the NG265-01 and NG300-01. Level 1 and 2 enclosures are 140 x 78 x 96 in (10,850 and 10,925 lbs). Level 3 sound-attenuated enclosure is 200 x 78 x 96 in at 11,775 lbs.
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