27 kVA
25 kVA
25 kVA Single Phase Silent Diesel Generator
25 kVASingle PhaseDiesel4DX21-45D
A 25 kVA single-phase silent diesel generator for larger commercial premises still on a single-phase supply, and for farm applications with modest motor loads. Turbocharged four-cylinder engine, AMF panel and a 70 litre bunded base tank. Above this rating we would normally recommend moving to three phase.
Explore related ranges: silent diesel generators and FAW generators.
R 90 300
Excl. VAT
Lead time 3 weeks
- Nationwide delivery, offloaded and positioned
- SANS 10142-1 compliant installation available
- Certificate of Compliance issued on handover
- 12-month warranty · genuine parts held in stock
Full specification
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Ratings
| Prime power | 25 kVA |
|---|---|
| Standby power | 28 kVA |
| Output | 20 kW |
| Phase | Single Phase |
| Voltage | 230 V |
| Frequency | 50 Hz |
| Power factor | 0.8 |
Engine
| Brand | FAW |
|---|---|
| Model | 4DX21-45D |
| Cylinders | 4 |
| Displacement | — |
| Aspiration | Turbocharged |
| Cooling | Radiator and fan |
| Rated speed | 1500 rpm |
Alternator
| Brand | Mecc Alte |
|---|---|
| Voltage regulation | ± 1% |
| Insulation class | H |
| Protection | IP23 |
Control panel
| Controller | Deep Sea DSE6020 |
|---|---|
| AMF / ATS | Included |
| Transfer time | 10–15 s |
| Remote monitoring | Optional |
Fuel & running
| Tank capacity | 70 L (bunded) |
|---|---|
| At 50% load | 2.9 L/h |
| At 75% load | 4.3 L/h |
| At 100% load | 5.5 L/h |
| Runtime at 75% | ≈ 16 hours |
Physical & compliance
| Dimensions | 1900 × 860 × 1180 mm |
|---|---|
| Dry weight | 525 kg |
| Noise level | 68 dB at 7 m |
| Canopy | Silent, weather-resistant, lockable |
| Warranty | 12 months |
What this generator will run
Indicative loads at 25 kVA / 20 kW.
- Lighting & small power circuits2 kW
- Commercial refrigeration & cold room5 kW
- HVAC — packaged units6 kW
- Three-phase motors (largest 15 kW)4 kW
- Passenger lift3 kW
- IT, servers & comms2 kW
Running costs at a glance
Adjust the diesel price to match your area.
R
- Consumption at 75% load
- 4.3 L/h
- Cost per hour
- R 101,05
- Cost per 8-hour day
- R 808,40
- Cost per month at 4 h/day
- R 8 892,40
Indicative only. Actual consumption varies with load profile, altitude and ambient temperature. Reference full-day cost at 8 h: R 808,40; continuous shift month ≈ R 17 784,80.
Frequently asked questions
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What will a 25 kVA generator actually run?
At about 20 kW of prime power, this unit covers mixed commercial loads — lighting, HVAC packages, refrigeration, lifts and IT — provided the largest motor starts are within the set’s surge capacity. We size final selections against your measured or estimated load profile.
Is installation included with the 25 kVA Single Phase Silent Diesel Generator?
Supply can be unit-only or turnkey. SANS 10142-1 compliant installation, AMF integration and a Certificate of Compliance on handover are available nationwide. Ask for a site-specific quote.
How noisy is the silent canopy?
This set is rated at approximately 68 dB(A) at 7 m under standard test conditions. Site layout, barriers and load profile affect the figure you hear on the ground.
What warranty and parts support do I get?
Standard cover is 12 months. Genuine FAW and alternator parts are held for common service intervals, with regional breakdown response across Southern Africa.
Can I finance or lease this generator?
Yes. We work with asset-finance partners on outright purchase, lease and rent-to-own structures for qualifying businesses. Procurement and tender packs are available on request.
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