Heavy-Duty 250kW Power – Engineered for Commercial Standby Applications

When the grid goes down and your business operations can’t afford a moment of downtime, you need a generator that delivers serious power with unwavering reliability. The EMEAN EM-W344 provides a solid 250kW (313kVA) of prime power, backed by a 327kW WEICHAI WP10D360E201 turbocharged and aftercooled diesel engine. With a wide voltage range from 110V to 660V and single or three-phase configurations available, this generator adapts to your specific electrical needs. Whether you’re protecting a manufacturing plant, a data center, a hospital, or a commercial facility, this is the standby generators commercial solution that keeps your critical systems running when you need them most.

The EM-W344 is more than just another standby generators commercial unit—it is a purpose-built power system engineered to withstand the demands of industrial and commercial environments. With a standby rating of 275kW (344kVA), this unit provides ample headroom for starting heavy equipment with high inrush currents and handling sudden load surges. The generator operates at 1800 RPM (60Hz) with a fuel consumption of just 204.6 g/kW.h, making it a cost-effective standby generators commercial choice for extended backup power.

Powered by WEICHAI – The 9.726L Straight-Six Workhorse

At the heart of this standby generators commercial solution lies the WEICHAI WP10D360E201, a 6-cylinder, 9.726-liter turbocharged and aftercooled diesel engine with an inline configuration. With a bore and stroke of 126×130 mm and a compression ratio of 17:1, this large-displacement platform delivers exceptional torque and thermal efficiency. The engine achieves a mean effective pressure of 2.467 MPa—remarkably high for this displacement class—demonstrating outstanding power density and combustion efficiency.

The engine features a mechanical fuel pump system and draws 1,660 kg/h of air at rated conditions, ensuring complete combustion and reduced emissions. The intercooling system is particularly impressive: at rated conditions, the intercooler reduces intake air temperature from 213.0°C down to just 48.9°C, with minimal pressure drop. This efficient charge-air cooling enables higher power output, cleaner combustion, and more stable operation.

What truly sets this engine apart for standby generators commercial applications is its remarkable oil consumption ratio of just ≤0.2% of fuel consumption—significantly lower than the industry average. With an oil capacity of 30L, the EM-W344 is designed for extended service intervals that minimize downtime. The engine maintains oil pressure between 380–580 kPa at rated speed, with low-pressure protection at 80 kPa (alarm) and 80 kPa (shutdown) to safeguard the engine from damage.

Engineered for Quiet, Efficient Operation

The EM-W344 features a soundproof canopy lined with sound-reducing foam, making it a standby generators commercial solution that respects both urban and suburban environments. The industrial silencer and modular ventilation design further reduce noise levels, while the all-metal canopy parts are powder-coated for durability and corrosion resistance. With a noise level of just 111.8 dB(A) (acoustic power level)—remarkably low for a 250kW diesel unit—the EM-W344 delivers the kind of neighborhood-friendly operation that makes it an ideal choice for commercial installations.

The engine’s thermal management is equally impressive. The closed-loop water cooling system is rated for operation up to 50°C ambient temperature, with a thermostat that begins opening at 71°C and reaches full opening at 82°C. Coolant flow is 20.6 m³/h, and the system holds 22L of coolant. At rated conditions, the cooling system removes 128.1 kJ/s of heat while the exhaust carries away 230.8 kJ/s, with total engine heat output of 844.6 kJ/s—ensuring stable operating temperatures even during extended run times.

Built to Start in the Toughest Conditions

A standby generators commercial system is only as good as its ability to start when you need it most. The WP10D360E201 starts reliably down to -10°C without auxiliary starting devices, and with a preheater, it operates confidently down to -30°C. This exceptional cold-start capability makes the EM-W344 a practical choice for installations across North America and Europe, where winter storms can knock out the power grid for days.

The 24V starting circuit is engineered with robust components: an 8.5kW starter motor and 55A battery charging alternator provide ample starting power that you can count on every time. When a winter storm hits, this standby generators commercial solution delivers the reliable starting performance you need to keep your facility running.