Blue Star PD750-01

Overview#

The Blue Star PD750-01 is a 750-kilowatt EPA Tier 2 diesel standby generator powered by the Perkins 2806C-E18TTAG7 — an 18.1-liter, six-cylinder twin-turbocharged and charge-air-cooled engine. The TTAG7 is the highest-output configuration of the 2806C-E18 block in Blue Star's Perkins lineup, using two turbochargers to reach 750 kWe from the same 150×78 in structural steel base footprint shared by the PD450 through PD600.

Blue Star Power Systems (North Mankato, Minnesota) pairs the 2806C-E18TTAG7 with a Stamford S6L1D-C alternator — a step up from the HCI534 series used on the PD450 through PD600 — and DSE DCP7310 controller. At 12,200 lbs, the PD750-01 is the heaviest model in Blue Star's Perkins diesel lineup. The heat radiated to ambient (892,620 BTU/hr) substantially exceeds the coolant circuit rejection (785,160 BTU/hr), requiring careful equipment room heat management. Note: 208V and 240V three-phase configurations require factory consultation — standard configurations are 480V and 600V only.

Deration: rated power is available to 1,640 ft (500 m) at 86°F (30°C). Consult the factory for sites exceeding these parameters.

Twin-Turbocharging at the Perkins Ceiling#

The TTAG7 designation identifies the twin-turbocharger arrangement that enables 750 kWe from the 2806C-E18 displacement. A single turbocharger at this output level would be limited by compressor and turbine map constraints; the twin-turbo configuration allows higher air charge density while maintaining acceptable turbo speeds. The consequence is a more complex air intake and exhaust system with two turbochargers to service, a tighter altitude limit (1,640 ft vs 3,281 ft for the single-turbo TAG3), and a substantially higher exhaust temperature (1,101°F vs 1,029°F). These tradeoffs are typical of high-output twin-turbo configurations and should be factored into both site selection and maintenance planning.

Voltage Configurations#

The PD750-01 is available in 480V (12 Lead WYE, S6L1D-C alternator) and 600V (4 Lead WYE, S6L1D-C alternator) standard configurations. Three-phase 208V and 240V configurations require factory consultation and are not available from standard drawings. Verify voltage requirements with the factory at time of order.

When to spec the PD750-01#

• 700–750 kW three-phase emergency standby loads at low-elevation, moderate-temperature sites (below 1,640 ft, below 86°F ambient)
• 480V or 600V applications (208V/240V require factory consultation)
• Facilities where the 150×78 in footprint is established and the maximum output from the Perkins 2806C platform is required
• Healthcare, data center, industrial, and municipal applications where 750 kW is the specified standby tier

Our service experience#

The PD750-01 is the most demanding model in Blue Star's Perkins lineup. The twin-turbocharger system requires annual inspection of both turbocharger assemblies, intercooler and charge air plumbing, and all exhaust connections. The exhaust temperature of 1,101°F demands heat-rated flex connectors and silencer mounting rated for continuous high-temperature service. The heat radiated to ambient at 892,620 BTU/hr is substantial — HVAC load calculations for the generator room must account for this, as it exceeds the coolant circuit rejection. Load bank testing at full rated output (54.3 gph) is essential at commissioning and annually thereafter. The altitude limit of 1,640 ft is a hard constraint — do not install at sites exceeding this elevation without factory consultation and written deration approval.