D750U IV - SDMO - KOHLER | 750 kW 938 kVA Diesel Generator

When your facility cannot afford downtime, the D750U IV delivers dependable, heavy duty backup power built for demanding commercial and industrial environments. Powered by a Doosan DP222LC engine and paired with an AT03540T alternator, this unit is engineered to keep hospitals, data centers, and industrial operations running when the grid fails.

• Standby (ESP) rating: 750 kWe / 938 kVA at 480/277V
• Prime (PRP) rating: 682 kWe / 852 kVA at 480/277V
• Engine: Doosan DP222LC, 12 cylinder V configuration, turbocharged
• Frequency: 60 Hz, running at 1800 RPM
• Standard control panel: TELYS, with optional APM802 touch screen system
• Compact version dry weight: 4,080 kg with a 610 L fuel tank
• Soundproofed version (M230 enclosure): 5,670 kg dry weight
• Frequency regulation accuracy: +/- 0.5%
• Governor type: Electronic
• Version: Enclosed (Fully Weather Proof Silent Enclosure)
• EPA Compliant: Export Only

This generator is built on a mechanically welded chassis with antivibration suspension, minimizing wear and operational noise over years of service. Whether installed indoors or in a soundproofed enclosure, the D750U IV is designed to perform reliably across a wide range of site conditions.

D750U IV Engine Performance and Fuel Efficiency

At the core of the D750U IV is the Doosan DP222LC engine, a turbocharged, air to air cooled 12 cylinder unit with a displacement of 21.93 cubic inches and a compression ratio of 15:1. Running at 1800 RPM, it produces a maximum standby power of 828 kW at rated speed, giving this generator the muscle to handle heavy electrical loads without hesitation.

Fuel efficiency matters for any generator that may run for extended periods, and the D750U IV is built with that in mind. At 100% load, fuel consumption sits at 183.20 L/hr, while a 75% load draws 134.40 L/hr and a 50% load only requires 91.30 L/hr. With a 610 L fuel tank on the compact version, operators get extended runtime between refueling, an important factor for facilities that cannot risk a gap in power.

Alternator Design Built for Stability

Paired with the engine is the AT03540T alternator, a three phase unit with a continuous nominal rating of 900 kVA at 40°C. This alternator uses brushless technology without a collar, reducing maintenance requirements while improving long term reliability. Voltage regulation is held to within +/- 1%, and total harmonic distortion stays low at 2.5% under no load and 2.2% under load, protecting sensitive electronic equipment connected downstream.

The alternator also maintains a short circuit ratio of 0.59 and can sustain a short circuit at 3 times rated current for 10 seconds, giving it the resilience needed to handle fault conditions without failure.

Control Panel Options for Every Application

The D750U IV ships standard with the TELYS control panel, an ergonomic interface featuring a large display, scroll wheel navigation, and full electrical and engine monitoring including voltage, frequency, oil pressure, coolant temperature, and fuel level. Alarms cover overspeed, failure to start, and battery voltage extremes, keeping operators informed at all times.

For larger installations, particularly hospitals, data centers, and industrial power plants, the optional APM802 system offers a full touch screen interface designed for power plant management, with modular architecture that supports future expansion.

Why Choose the D750U IV for Your Backup Power Needs

The D750U IV combines proven Doosan engine technology, a robust SDMO built alternator, and flexible control options into a single dependable package. With standby power up to 750 kWe and prime power up to 682 kWe, it is sized for serious commercial and industrial demands. 

Built with a durable chassis, extended fuel autonomy, and enclosure options for noise sensitive sites, this generator is ready to protect your operations from unexpected outages. Contact our team today to request a quote or learn more about configuration options for your specific site.