GENERATOR MODEL: EM-W28
| Gensets | ENGINE | Alternator | Customization | Option | ||||
|---|---|---|---|---|---|---|---|---|
| Rated Power | 25KVA/20KW | Engine Model | WP2.3D33E200 | Alternator Model | VG-184FS | Voltage: | 110V-660V | ATS |
| Standby Power | 28KVA/22KW | Brand | WEICHAI | Rated power: | 20KW | Phase: | Single Phase/ Three Phases | Remote Control |
| Frequency | 50Hz | Engine Power | 30KW | Standby Power: | 28KVA | Alternator: | Stamford/ Leroy Somer/Marathon | Charger |
| Speed | 1500 RPM | Cylinder | 4 | Insulation Class: | H | Control Panel: | Smartgen/Deep sea | Jacket Heater |
| Fuel | Diesel | Fuel Consumption | 7.94 L/h | Protection Class: | IP23 | Fuel Tank Volume: | According To Requirements | Oil Heater |
| Digital Controller | Standard | Displacement | 2.3 L | Trailer | ||||
Designed for industrial and commercial applications, this 25KVA/20KW diesel generator combines robust performance with exceptional efficiency.
Powered by a WEICHAI WP2.3D33E200 engine (30KW rated), it delivers 22KW standby power at 1500 RPM with low fuel consumption (7.94L/H at full load).
Key Features:
✔ High-Performance Alternator: VG-184FS brushless design (Class H insulation) ensures stable output (110V-660V, single/three-phase)
✔ Intelligent Control: Standard digital panel with auto-protection
✔ Durable & Adaptable: IP23 protection, optional ATS, and customizable fuel tank
✔ Low Maintenance: Compact 4-cylinder design (2.3L displacement) with easy-access components
Ideal for construction sites, farms, or backup power, this generator balances power, efficiency, and reliability. Options: Remote control, jacket/oil heaters, trailer mounting.
| Gensets | Download |
|---|---|
| Diesel Generator Set Data Sheet | |
| Engine Data Sheet | |
| Alternator Data Sheet |
When you need backup power that won‘t disturb your neighborhood or workplace, the EMEAN EM-W28 delivers a solid 20kW (25kVA) of prime power with a robust 30kW WEICHAI WP2.3D33E200 turbocharged diesel engine at its core. This quiet 240v generator is designed to keep your essential systems running during outages while maintaining noise levels that respect both residential and commercial environments.
The EM-W28 stands out as a quiet 240v generator that doesn‘t compromise on performance. With a sound power level of just 106.1 dB(A)【6†L38-L40】—remarkably low for a 20kW diesel unit—it operates with less disturbance than many competing models in its class. Whether you need a quiet 240v generator for home backup, a retail store, or a farm, this unit delivers the power you need without the noise you don’t.
Powered by WEICHAI – Proven Turbocharged Performance
At the heart of this quiet 240v generator lies the WEICHAI WP2.3D33E200, a 4-cylinder, 2.3-liter turbocharged diesel engine【4†L12-L13】. Unlike naturally aspirated engines in this category, the turbocharged configuration delivers higher power density and better performance at altitude. The engine produces 30kW of gross output, providing ample headroom for the generator’s 20kW rated output and 22kW standby capacity.
The engine’s mean effective pressure of 1.15 MPa【8†L1-L4】is among the highest in its displacement class, indicating exceptional thermal efficiency and torque characteristics. Combined with a mean piston speed of just 4.6 m/s【8†L1-L4】, this engine achieves an optimal balance between power delivery and long-term durability—reducing wear on cylinder walls and piston rings over thousands of operating hours.
Fuel Efficiency That Saves You Money
Fuel consumption is a critical consideration for any generator owner. The WP2.3D33E200 consumes 7.94 L/h at full load, which translates to approximately 252 g/kWh—highly competitive for a turbocharged diesel in this power range. Over a year of intermittent or standby operation, this efficiency directly reduces your operating costs and extends runtime between refuels.
The engine’s oil consumption ratio is remarkably low at just 0.4% of fuel consumption【6†L25-L27】, meaning less frequent oil top-ups and lower maintenance costs. With an oil capacity of 5.3L (low) to 8L (high)【6†L12-L13】, the EM-W28 is designed for extended service intervals that minimize downtime.
Built to Start in Any Weather
Cold weather reliability sets this generator apart from many competitors. The WP2.3D33E200 starts reliably down to -5°C without auxiliary starting devices, and with a preheater, it operates confidently down to -15°C【4†L16-L17】. This capability makes the EM-W28 a practical choice for installations across North America and Europe, where winter temperatures can pose significant challenges for diesel equipment.
The electrical system features a 12V negative-ground configuration with a 3kW starter motor and a 35A battery charging alternator【6†L39-L41】. The starting circuit is engineered with a maximum resistance of just 4 mΩ and uses 50 mm² wiring【7†L3-L5】, ensuring ample current delivery to the starter even in the coldest conditions.
Thermal Management – Engineered for Continuous Operation
The WP2.3D33E200’s cooling system is designed for sustained performance even in demanding environments. The engine is rated for operation up to 40°C ambient temperature【5†L18-L19】, with a thermostat that begins opening at 72°C and reaches full opening at 82°C【5†L21-L22】. The closed-loop forced water cooling system maintains optimal thermal balance, with coolant flow of 3.4 m³/h at rated conditions【7†L19-L20】.
Heat balance data reveals the engine’s efficient thermal design: at rated working conditions, the cooling system removes 16.8 kJ/s of heat, while the exhaust carries away 19.1 kJ/s【7†L26-L28】. Total engine heat output is 75.7 kJ/s【7†L24-L25】, with surface radiation accounting for just 5%—a testament to the effective heat dissipation through the cooling and exhaust systems.
1.Power by Brand new water cooled diesel engine
2.Brushless alternators (Class H, with AVR)
3.Working condition: 0℃~+40℃ (Antifreeze system needed if below 0℃)
4.Base frame fuel tank for continue 8-10hrs running
5.Digital control panel with auto protection
6.MCCB air circuit breaker for over current shutdown
7.Industrial silencer for silent type generator sets
8.Humanized design, simple operation, easy maintenance
9.Ventilation parts are designed with modular principles
10.Soundproof canopy which lined with sound reducing foam
11.All metal canopy parts are painted by powder foam
12.Glass Panel window
13.Lockable doors on front and back side for easy maintenance
14.Easy maintenance and operation
15.Easy lifting and moving, there is forklift hooks and crane holes on chassis
16.External emergency stop button
17.Steel chassis and anti-vibration pads
18.Includes diesel level sensor information to the controller

EMEAN POWER is a well-established enterprise with three subsidiaries: Fuzhou Emean Electric Machinery Co., Ltd., Fujian Epos Electric Machinery Co., Ltd.and Fujian Epos Technology Co., Ltd. Currently, we have two factories and one factory under construction.
To date, we have established cooperative relationships with more than 10,000 customers, and our business covers more than 100 countries and regions around the world.



Digital control panel | Electronic Components | Thicken Chassis | Corrosion Resistant Radiator | Solid Damping Foot | Filter |
|---|---|---|---|---|---|
Integrated digital, intelligent technology, compact structure, simple wiring, high reliability. | Cooperate with well-known electronic component manufacturers such as DELIXI and CHINT to provide customers with long-life,high-quality and very accurate machines | 5MM thickened bent chassis, double-layer painting, improve corrosion resistance. Prevent the unit chassis from being corroded | High quality and low noise radiators, with anti-rust paint to add, ensure that your machine will never old, mildew, corrosion resistance, safety. | Solid damping foot is stamping forming by 3-5 mm high strength steel plate, with metal cover to protect rubber. | More than 99.5% of filtration efficiency |

Our alternator: | Other factory alternator: | Our silicon steel sheet: | Other factory alternator: |
|---|---|---|---|
100% copper wire brushless alternator Or original STAMFORD alternator. | Brush alternator with low quality. | Use high quality cold rolled silicon steel sheet | Use low quality hot rolled silicon steel sheet |

Our engine: | Other factory engine: | Our Radiator: | Other Radiator: |
|---|---|---|---|
Branded powerful engine,with global warranty service. | No Certified, no quality guarantee. | High quality and low noise radiators, with anti-rust paint to add, ensure that your machine will never old, mildew, corrosion resistance, safety. | Low quality, high noise radiator, parameter falsification |
We use advanced full welding technology to carefully weld the plates to ensure that the welds are firm and tight without any gaps. We use thickened plates to enhance the overall firmness and stability. The bending arc is extremely natural and smooth without any sense of stiffness. All rounded corners are smooth and flat, with a delicate touch, showing extremely high craftsmanship and exquisite quality.

Accept Customized Different Colors


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