40 Kva Trailer Generator
A 40 kva trailer generator is a road-towable, sound-attenuated diesel power unit mounted on a compliant single-axle trailer, delivering 40 kVA (32 kW at 0.8 power factor) of prime-rated electricity for construction sites, outdoor events, and emergency standby duty where the grid cannot reach. You hitch it to a pickup, tow it to the site, and the lights come on within fifteen minutes.
Key Features
- One-tow mobility. A single-axle road trailer with overrun brakes, a lighting set, and a 50 km/h-rated hitch means you drive it to the site, not ship it and reassemble. Most skid-mounted units need a flatbed truck and a crane - you skip both.
- Sound you can stand beside. 68 dB(A) at 7 m keeps a 3 a.m. city pour inside night-noise bylaws; open units hit 85-90 dB and get shut down by the site manager before the first truck arrives.
- Voltage held to ±2%. A brushless alternator with automatic voltage regulation keeps voltage within ±2% - your motors start on the first try, contactors stop chattering, and the pumps and light towers downstream stay alive.
- Auto mains failure ready. The AMF panel senses a grid outage and starts the engine in under 10 seconds - standby duty without an operator on the premises, so your cold storage never thaws.
- Protection that trips before damage. Low oil-pressure and high coolant-temperature alarms shut the engine down before a bearing seizes - a €40 sensor guarding a €15,000 powertrain.
Technical Specifications
|
Prime power |
40 kVA / 32 kW @ 0.8 PF |
|
Standby power |
44 kVA |
|
Engine |
diesel, 4-stroke, water-cooled, turbocharged |
|
Speed / frequency |
1500 rpm / 50 Hz (1800 rpm / 60 Hz) |
|
Alternator |
brushless, AVR, ±2% voltage regulation |
|
Fuel tank |
≥ 8 hours full-load run |
|
Sound level: |
≤ 68 dB(A) @ 7 m |
|
Canopy: |
IP23 weatherproof steel, rock-wool lined |
|
Control: |
AMF / ATS panel, auto start < 10 s |
|
Standards: |
CE, ISO 8528 |
|
Trailer: |
single-axle, overrun brake, lamps, reflectors, 50 km/h rated |
Applications
Roadwork and building sites, outdoor concerts and film sets, emergency backup for clinics and cold storage, off-grid farms and irrigation lifts, and small industrial plants.
Why this unit
A 40 kva trailer generator sits in the sweet spot of mobile power - enough to run a site office, a lighting tower, and small pumps at once, yet small enough to tow behind a standard vehicle. Buy one and it covers two job sites; the alternative is renting, where six months of hire fees already exceed the purchase price. Specify it once and you stop paying for silence every weekend.
FAQ
Q: How loud is a 40 kva trailer generator?
A: ≤ 68 dB(A) at 7 m - conversation-level, inside most urban night-noise limits.
Q: Can it run on 50 Hz and 60 Hz?
A: Yes, configurable at 1500 rpm/50 Hz or 1800 rpm/60 Hz.
Q: How fast does it start on mains failure?
A: Under 10 seconds via the AMF panel - no operator needed on site.
Q: What standards does it meet?
A: CE and ISO 8528 .
Q: How long does it run on a full tank?
A: ≥ 8 hours at full load.
Key Takeaways
A 40 kva trailer generator delivers 40 kVA prime / 44 kVA standby on a road-towable trailer.
- 68 dB(A) at 7 m keeps you inside night-noise bylaws.
- AMF auto-starts in under 10 seconds for unattended standby duty.
- CE + ISO 8528 certified for export compliance.
- One unit covers two job sites - six months of hire fees exceed the purchase price.
Send your power, voltage, and frequency requirements today - a quoted spec sheet with fuel consumption and canopy drawings comes back within 24 hours.
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