Heavy-Duty 90kW Backup Power – Engineered for 240V Applications

When the grid goes down and you need serious backup power, the EMEAN EM-W124 delivers a solid 90kW (113kVA) of prime power, backed by a 113kW WEICHAI WP4.1D113E200 turbocharged and intercooled diesel engine. With a wide voltage range from 110V to 660V—including standard 240V configurations—this is a 240 volt generator that works seamlessly with North American electrical systems. Whether you are protecting a large home, a farm, a retail store, or a small business, this generator keeps your 240V appliances, tools, and equipment running when you need them most.

The EM-W124 is more than just another 240 volt generator—it is a thoughtfully engineered power system that combines proven WEICHAI diesel technology with modern control features and a soundproof canopy for quiet operation. With a standby rating of 99kW (124kVA), this unit provides ample headroom for starting motors with high inrush currents and handling temporary load surges. The generator operates at 1500 RPM (50Hz) with a fuel consumption of just 210g/kW.h, making it a cost-effective 240 volt generator for extended backup power.

Powered by WEICHAI – The 4.087L Powerhouse

At the heart of this 240 volt generator lies the WEICHAI WP4.1D113E200, a 4-cylinder, 4.087-liter turbocharged and intercooled diesel engine with an L-type cylinder arrangement. With a bore and stroke of 105×118 mm and a compression ratio of 17.5, this larger-displacement platform delivers exceptional torque and thermal efficiency. The engine achieves a mean effective pressure of 2.74 MPa—remarkably high for this displacement class—and a mean piston speed of 5.9 m/s, a well-balanced figure that promotes long engine life while delivering robust power.

The intercooling system is particularly impressive: at rated conditions, the intercooler reduces intake air temperature from 199.6°C down to just 57.2°C, with a pressure drop of only 5 kPa. This efficient charge-air cooling enables higher power output, cleaner combustion, and more stable operation. The engine draws 450 kg/h of air at standby conditions, ensuring complete combustion and reduced emissions.

What truly sets this engine apart is its exceptional fuel efficiency. With a fuel consumption rate of just 210g/kW.h, the EM-W124 delivers predictable operating costs and less frequent refueling compared to many competitors in this power range. The engine maintains oil pressure between 250–500 kPa at rated speed, with a low-pressure alarm at 100 kPa to protect the engine from damage.

Built to Start in the Coldest Conditions – When You Need It Most

A 240 volt generator is only useful if it starts when you need it. The WP4.1D113E200 starts reliably down to -15°C without auxiliary starting devices, and with a preheater, it operates confidently down to -25°C. This exceptional cold-start capability makes the EM-W124 a practical choice for installations across North America, where winter storms can knock out the power grid for days.

The 24V starting circuit is engineered with a maximum resistance of just 4 mΩ and uses 50 mm² wiring, ensuring ample current delivery to the starter even in the coldest conditions. A 4.5kW starter motor and 18A battery charging alternator provide robust starting power that you can count on every time. When a winter storm hits, this 240 volt generator delivers the reliable starting performance you need to keep your family or business running.

Engineered for Quiet, Efficient Operation

The EM-W124 features a soundproof canopy lined with sound-reducing foam, making it a 240 volt generator that respects both residential and commercial 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 sound power level of just 106.9 dB(A)—remarkably low for a 90kW diesel unit—the EM-W124 delivers the kind of neighborhood-friendly operation that makes it an ideal choice for residential backup.

The engine’s thermal management is equally impressive. The closed-loop water cooling system is rated for operation up to 40°C ambient temperature, with a thermostat that begins opening at 76°C and reaches full opening at 89°C. Coolant flow is 6.2 m³/h, and the system holds 9.4L of coolant. At rated conditions, the cooling system removes 59.2 kJ/s of heat while the exhaust carries away 82.9 kJ/s, ensuring stable operating temperatures even during extended run times.

Clean, Efficient Combustion

The turbocharged and intercooled WP4.1D113E200 draws 450 kg/h of air at rated conditions and standby, ensuring complete combustion and reduced emissions. The exhaust system is designed with a maximum back pressure limit of 10 kPa, allowing for flexible exhaust routing without compromising performance. Maximum exhaust temperature is capped at 560°C—significantly lower than many competitors—indicating robust thermal design that protects turbocharger components over the long term.