20KVA Single Phase SuperSilent Diesel Generator

Standby Power: 22kVA @ at 230v | 50Hz |1500rpm
Four-cylinder water-cooled 4DW91-29D diesel engine
Prime power (PRP): 20kVA
Ideal for home and small business applications
Dimensions (LxWxH): 1800mm x 890mm x 1265mm
Dry weight: 741kg
Starts & Stops Automatically
Maintenance-free Battery
SuperSilent Mild-steel Canopy
Long-range Fuel Tank
Easy Cable Entry
Emergency Stop Button
Anti-Vibration Engine Mounts
Silent Exhaust System



Structure type SuperSilent mild-steel enclosure
Dimensions Length x Width x Height 1750mm x 850mm x 1270mm
Dry weight 782kg
ATS unit included ✔️
Four-way protection system included ✔️


  • The complete generator set is mounted as a whole on a heavy-duty fabricated, steel base frame
  • Steel chassis and anti-vibration pads
  • Base frame design incorporates an integral fuel tank
  • The generator can be lifted or carefully pushed/pulled by the base frame
  • Dial-type fuel gauge on the fuel tank


  • Ventilation parts are designed with modular principles
  • Weather resistant and lined with sound-reducing foam
  • All metal canopy parts are painted by powder paint
  • Panel window
  • Lockable doors on each side
  • Easy maintenance and operation
  • Easy lifting and moving
  • Thermally insulated engine exhaust system
  • Exterior emergency stop push button
  • Sound attenuated

*All ratings are quoted at maximum ratings at sea level and derating will be applicable for altitude and power factor.



Control supervision and protection panel is mounted on the genset base frame. The control panel is equipped as follows:


Auto mains failure control panel
  • Controller with Smartgen automatic transfer switch
  • 420 Smartgen electronic controller
  • Emergency stop push button
  • Static battery charger
  • Three-pole electrically and mechanically interlocked ATS
Generating set control module 420 Smartgen features
  • This module is used to monitor a mains supply and automatically start a standby-generating set
  • Shutdown alarms
Metering via LCD display
  • Mains volts (L-L/L-N)
  • Generator amps (L1, L2, L3)
  • Generator frequency; generator (cos)
  • Engine hours run; plant battery (volts)
  • Engine oil pressure (psi and bar)
  • Engine speed (rpm)
  • Engine temperature (degrees C)
Automatic shutdown and fault conditions
  • Under/over speed; fail to start
  • High engine temperature; fail to stop
  • Low oil pressure; charge fail
  • Under/over generator volts
  • Under/over generator frequency;
  • Emergency stop/start failure
  • Under/over mains voltage
  • Charge failure

Engine Data

Engine Specifications

Diesel generator model 4DW91-29D
Engine make FAWDE
Displacement 2,54l
Cylinder bore/Stroke 90mm x 100mm
Fuel system In-line fuel injection pump
Fuel pump Electronic fuel pump
Cylinders Four (4) cylinders, water cooled
Engine output power at 1500rpm 21kW
Turbocharged or normally aspirated Normally aspirated
Cycle Four Stroke
Combustion system Direct injection
Compression ratio 17:1
Fuel tank capacity 57l
Fuel consumption 100% 6.3 l/h
Fuel consumption 75% 4.7 l/h
Fuel consumption 50% 3.2 l/h
Fuel consumption 25% 1.6 l/h
Oil type 15W40
Oil capacity 8l
Cooling method Radiator water-cooled
Coolant capacity (engine only) 12.5l
Starter 12v DC starter and charge alternator
Governor system Electrical
Engine speed 1500rpm
Filters Replaceable fuel filter, oil filter and dry element air filter
Battery Maintenance-free battery including rack and cables
Silencer Exhaust silencer

Alternator Data

Alternator Specifications

Alternator brand StromerPower
Standby power output 22kVA
Prime power output 20kVA
Insulation class Class-H with circuit breaker protection
Type Brushless
Phase and connection Single phase, two wire
AVR ✔️
AVR model SX460
Voltage regulation ± 1%
Voltage 230v
Rated frequency 50Hz
Voltage regulate change ≤ ±10% UN
Phase change rate ± 1%
Power factor 1
Protection class IP23 Standard | Screen protected | Drip-proof
Stator 2/3 pitch
Rotor Single bearing
Excitation Self-exciting
Regulation Self-regulating
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