What engine does the PD250-01 use?

The Perkins 1706D-E93TAG1 — a 9.29-liter, six-cylinder turbocharged and charge-air-cooled diesel. The 1706D-E93 is Perkins' purpose-built generator engine platform at this displacement class, with the TAG1 calibration producing 250 kWe standby. It carries EPA Tier 3 certification for stationary emergency applications. Rated power is available up to 3,281 ft (1,000 m) at ambient temperatures to 104°F (40°C).

What controller does the PD250-01 use?

The DSE DCP7310 Digital Control Panel, with CAN Bus J1939 engine communication, digital metering, RS-485 interface, 8 programmable contact inputs, 10 contact outputs, and NFPA 110 Level 1 compatibility. The panel is cULus Listed and CE Approved with IP 65 ingress protection (with supplied gasket). A 24V battery system and 24V 5 Amp battery charger are included.

How does the PD250-01 compare to the PD200-01, and what platform change is involved?

The PD200-01 uses the 1106D-E70TAG5 (7.01L) at 200 kWe with a UCI274H alternator (4,150 lbs, 14.8 gph) on a 110×54 in footprint. The PD250-01 steps up to the 1706D-E93 platform (9.29L) with a larger 120×66 in footprint and S4L1D-C41 alternator at 5,850 lbs and 19.1 gph. This is a platform change — not a calibration bump — so it involves a larger footprint and significantly greater weight. Both are Tier 3 certified. The PD250 also supports single-phase output configurations.

What are the ventilation and thermal requirements for the PD250-01?

The PD250-01 requires 17,032 CFM of radiator cooling airflow. Combustion air draw is 989 CFM. Heat rejected to the coolant circuit is 401,160 BTU/hr; heat radiated to ambient is 306,240 BTU/hr. Exhaust exits at 925°F at 2,219 CFM. For fuel planning: at full load (19.1 gph), a 1,000-gallon sub-base tank provides approximately 52 hours of runtime. The 24-hour fuel tank option provides 1,300 gallons.

Blue Star Power Systems · Perkins Diesel Standby

Blue Star PD250-01

Name: Blue Star PD250-01
Brand: Blue Star Power Systems
Availability: PreOrder

250 kW standby · Diesel · Liquid-cooled

250 kW Tier 3 diesel standby generator built by Blue Star Power Systems. Perkins 1706D-E93TAG1 six-cylinder engine with charge air cooling, Stamford S4L1D-C41 alternator, DSE DCP7310 controller.

Standby power: 250 kW
Voltage options: 120/240V, 120/208V, 277/480V, 347/600V
Frequency / Phase: 60 Hz · 1/3-phase
Engine: Perkins 1706D-E93TAG1 · 9.3L
EPA / Emissions: Tier 3
Alternator: Stamford S4L1D-C41

Residential Commerciallight-industrialProperty MgmtworshipGovernment Media & Telecompump-station

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Overview#

The Blue Star PD250-01 is a 250-kilowatt Tier 3 diesel standby generator powered by the Perkins 1706D-E93TAG1 — a 9.29-liter, six-cylinder turbocharged and charge-air-cooled engine on Perkins' dedicated generator platform for this displacement class. The PD250-01 represents the entry point into Blue Star's larger-frame Perkins lineup, stepping up from the 1106D-E70 platform to the 1706D-E93 with a broader 120×66 in footprint and the Stamford S4 alternator family.

Blue Star Power Systems (North Mankato, Minnesota) pairs the 1706D-E93TAG1 with a Stamford S4L1D-C41 alternator and DSE DCP7310 controller. At 5,850 lbs, the PD250-01 is 1,700 lbs heavier than the PD200-01, reflecting the larger engine, alternator, and base frame. Unlike the PD300 and above, the PD250-01 supports both single-phase and three-phase output configurations. Deration parameters: rated power is available to 3,281 ft (1,000 m) at 104°F (40°C).

Platform Entry: The 1706D-E93 at 250 kW#

The 1706D-E93TAG1 is the entry calibration of Perkins' 1706D-E93 generator engine series. This TAG1 designation represents the base turbocharger and fuel delivery configuration of the platform, with higher TAGx variants stepping through additional output levels (the TAG2 produces 300 kWe as the PD300-01). Both models share the same 120×66 in footprint and general engine architecture, making the PD250 and PD300 footprint-compatible — a useful option when load growth is anticipated.

When to spec the PD250-01#

225–250 kW emergency standby loads on diesel fuel at moderate-elevation sites
Applications requiring single-phase output above 200 kW
Facilities upgrading from a 200 kW PD model where the wider 120×66 in footprint is accommodated
Projects where load growth to 300 kW is possible — the PD300 shares the same footprint

Our service experience#

The 1706D-E93TAG1 at 250 kWe is a purpose-built generator engine. Annual full-load testing is recommended, and the change to a 24V battery system (vs 12V on smaller PD models) should be noted at commissioning. Verify that the generator room ventilation is sized for 17,032 CFM — this is a significant step up from the 200 kW models. Follow the Perkins 1700D generator series service schedule, including fuel filter and intercooler inspection intervals.

Engineering specifications

Physical

Length: 120 in
Width: 66 in
Height: 78 in
Dry weight: 5,850 lb

Acoustic

Sound @ 7m, full load: 88 dBA
Enclosure: Open

Fuel system & runtime

Fuel use @ full load: 19.1 GPH
Fuel use @ 75% load: 14.9 GPH
Fuel use @ 50% load: 11.3 GPH

Thermal & ventilation

Heat to coolant: 401,160 BTU/hr
Heat radiated: 306,240 BTU/hr
Exhaust flow: 2,219 CFM
Exhaust temp: 925 °F
Combustion air: 989 CFM
Ventilation air: 17,032 CFM

Documents & downloads

Spec sheets & manuals

Spec sheet (datasheet)

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Estimate runtime for the Blue Star PD250-01

Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.

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Generator size

Fuel

Fuel tank capacity

gal

Load

Override full-load GPH (optional)

GPH

Estimated runtime

13.6 hours(0.6 days)

Fuel consumption ≈ 14.73 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.

Service intervals

Manufacturer-recommended intervals for the Blue Star PD250-01 under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter: Every 500 hours or 12 months
Coolant change: Every 6000 hours
Air filter: Every 1000 hours
Fuel filter: Every 500 hours
Major overhaul: ≈ 20,000 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
Fuel quality / degradation	Hard starting, filter clogging, reduced power	4,380+	moderate
Turbocharger	Power loss, excessive smoke under load	12,000+	moderate
Battery	Failed to start, slow crank	8,760+	minor

Frequently Asked Questions

What engine does the PD250-01 use?: The Perkins 1706D-E93TAG1 — a 9.29-liter, six-cylinder turbocharged and charge-air-cooled diesel. The 1706D-E93 is Perkins' purpose-built generator engine platform at this displacement class, with the TAG1 calibration producing 250 kWe standby. It carries EPA Tier 3 certification for stationary emergency applications. Rated power is available up to 3,281 ft (1,000 m) at ambient temperatures to 104°F (40°C).
What controller does the PD250-01 use?: The DSE DCP7310 Digital Control Panel, with CAN Bus J1939 engine communication, digital metering, RS-485 interface, 8 programmable contact inputs, 10 contact outputs, and NFPA 110 Level 1 compatibility. The panel is cULus Listed and CE Approved with IP 65 ingress protection (with supplied gasket). A 24V battery system and 24V 5 Amp battery charger are included.
How does the PD250-01 compare to the PD200-01, and what platform change is involved?: The PD200-01 uses the 1106D-E70TAG5 (7.01L) at 200 kWe with a UCI274H alternator (4,150 lbs, 14.8 gph) on a 110×54 in footprint. The PD250-01 steps up to the 1706D-E93 platform (9.29L) with a larger 120×66 in footprint and S4L1D-C41 alternator at 5,850 lbs and 19.1 gph. This is a platform change — not a calibration bump — so it involves a larger footprint and significantly greater weight. Both are Tier 3 certified. The PD250 also supports single-phase output configurations.
What are the ventilation and thermal requirements for the PD250-01?: The PD250-01 requires 17,032 CFM of radiator cooling airflow. Combustion air draw is 989 CFM. Heat rejected to the coolant circuit is 401,160 BTU/hr; heat radiated to ambient is 306,240 BTU/hr. Exhaust exits at 925°F at 2,219 CFM. For fuel planning: at full load (19.1 gph), a 1,000-gallon sub-base tank provides approximately 52 hours of runtime. The 24-hour fuel tank option provides 1,300 gallons.

Compatible equipment

Transfer switches

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