FAW 23kVA 3 Phase SuperSilent (GKO3-25 SS)

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Features and benefits

  • Maximum 25kVA standby power at 230/400v @50Hz 1500rpm
  • Powerful FAW four-cylinder 1500rpm water cooled 4DW91-29D series diesel engine
  • Ideal for home and small business applications
  • Super silent canopy which needs to stand undercover with lockable doors
  • Automatic changeover (ATS), maintenance free batteries and trickle charger included
  • Fuel tank capacity of 50l
  • Four-way protection system included
  • H-specification insulation, brushless alternator with AVR provides stable output
  • Easy to use digital controller with auto and manual start options
  • Peace of mind of earlier of one year/1000 hour warranty vs traditional 3000rpm sets at six months/500 hours
  • Improved fuel consumption and better reliability/longer lifespan than 3000rpm units


  • FAW diesel engine
  • Four cylinder water cooled
  • Electronic fuel pump
  • 12v DC starter and charge alternator
  • Replaceable fuel filter, oil filter and dry element air filter
  • Cooling radiator and fan
  • Exhaust silencer
  • Maintenance free battery including rack and cables


  • Brushless, single bearing system, four poles
  • Insulation class H with circuit breaker protection
  • Standard degree of protection IP21
  • Self-exciting and self-regulating
  • Screen protected and drip proof
  • Automatic voltage regulator


  • 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
  • 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
  • General specifications

  • Structure type
  • Dimensions Length x Width x Height
  • Dry weight
  • ATS unit included
  • Four-way protection system included
  • GKO3-25 Super silent

  • 25kVA

  • Super silent enclosure
  • 1800mm x 890mm x 1265mm
  • 741kg
  • Engine specifications

  • Diesel generator model
  • Engine make
  • Displacement
  • Cylinder bore/stroke
  • Fuel system
  • Cylinders
  • Cylinder arrangement
  • Engine output power at 1500rpm
  • Turbocharged or normally aspirated
  • Cycle
  • Combustion system
  • Compression ratio
  • Fuel tank capacity
  • Fuel consumption 100%
  • Fuel consumption 75%
  • Fuel consumption 50%
  • Fuel consumption 25%
  • Oil type
  • Oil capacity
  • Cooling method
  • Coolant capacity (including rdiator)
  • Starter
  • Governor system
  • Engine speed
  • GKOS-25 Super silent

  • 25kVA

  • 4DW91-29D
  • FAW
  • 2,54l
  • 90mm x 100mm
  • In-line fuel injection pump
  • 4
  • Vertical in-line
  • 21kW
  • Normally aspirated
  • Four stroke
  • Direct injection
  • 17:1
  • 50l
  • 6 l/h
  • 4.5 l/h
  • 3 l/h
  • 1.5 l/h
  • 15W40
  • 8l
  • Radiator water-cooled
  • 12.5l
  • 12v DC
  • Mechanical
  • 1500rpm
  • Alternator specifications

  • Alternator brand
  • Standby power output
  • Prime power output
  • Insulation class
  • Type
  • Phase and connection
  • AVR
  • AVR model
  • Voltage regulation
  • Voltage
  • Rated frequency
  • Voltage regulate change
  • Phase change rate
  • Power factor
  • Protection class
  • Stator
  • Rotor
  • GKOS-25 Super silent

  • 25kVA

  • 25kVA
  • 23kVA
  • H
  • Brushless
  • Three phase, four wire
  • SX460
  • ± 1%
  • 230/400v
  • 50Hz
  • ≤ ±10% UN
  • ± 1%
  • 0.8
  • IP21
  • 2/3 pitch
  • Single bearing

Control system

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
  • Four-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)

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

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

The Generator King (Pty) Ltd reserves the right to change generator information without prior notice. Information is double checked to ensure that it is correct, however The Generator King (Pty) Ltd will not be held responsible for clerical  errors. (E&OE)


No, the price does not include installation. Each installation is different and requires a different length  cable. Travel time and distance vary.

All installations need to be carried out  by a qualified electrician who needs to issue a valid Certificate of Compliance (COC) for insurance and to validate our warranty.

No, GenKing are the manufacturers of the gensets units and are the largest wholesaler of diesel generators in Sub-Saharan Africa. Any qualified electrician can do the installation and issue the electrical certificate of compliance (COC).

Quoted prices exclude delivery. Delivery can be quoted separately if you supply us with the delivery location. Our sales team will provide a quote on request and provide logistical support.

Yes, our silent generators all include silent canopies and automatic transfer switches (ATS). Delivery and installation are not included as noted above. Accessories and customisations can be included as required, speak to our sales team for more information.

The warranty is 12 Months or 1000 Hours whichever occurs first and is a limited warranty which covers the replacement of defective spare parts but not the labour or travel. Please refer to our standard terms and conditions for more information.

The pricing is subject to change with no prior notice based on availability and the exchange rate. Any publically available pricing is indicative. Written quotes are valid for 7 calendar days and while stocks last.

All ratings are stated at sea level and de-rating will be applicable for both altitude and temperature variations.

It is important to note that a qualified electrician measures how many Amps per phase you will need to draw on site for your running load and your maximum first-step load.

Do not exceed 50% of the rated load of the generator for your first-step load. Do not exceed more than 75% of the rated load for your running load.

It is also important that your genset does not run at below 50% load as this can cause damage to the engine and other parts.

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