Scheppach SG5200D Diesel Generator
(4 reviews)
Five kilowatts of diesel power, a 400 V three-phase socket and a sixteen litre tank: a generator aimed at job sites and extended backup, not camping.
Characteristics
- Output: 5,000 W max at 400 V, 3,300 W at 230 V
- Engine: 418 cc diesel, 7.7 hp, air cooled
- Sockets: 1 x 400 V, 2 x 230 V, 1 x 12 V DC
- Runtime: 16 L tank, electric key start
- Three-phase 400 V for under 1,300 euros
Detailed overview: Scheppach SG5200D diesel generator
The Scheppach SG5200D belongs to a well defined family: site diesel generators, halfway between the portable standby unit and the fixed backup set. Its engine is a four-stroke, air-cooled single cylinder of 418 cubic centimetres, credited with 7.7 horsepower, or roughly 5.7 mechanical kilowatts. That base drives an alternator able to deliver 5,000 watts at peak on the 400 volt three-phase socket, with 4,200 watts quoted continuous.
The electrical distribution is the unit's real signature. A 400 volt three-phase socket takes the site machines that will not run single-phase: cement mixers, masonry saws, compressors, welding sets. Two single-phase 230 volt sockets, rated 3,000 watts continuous and 3,300 at peak, handle ordinary tools and lighting. A 12 volt 8.3 amp output completes the set for recharging a vehicle battery. An automatic voltage regulator, the familiar AVR, compensates for swings when a machine starts and suddenly draws current.
In the field, diesel changes two things compared with petrol. Consumption first: around 1.43 litres per hour at two thirds load, which gives close to eleven hours of running from the sixteen litre tank. Longevity second, a diesel engine working at constant speed sustaining service lives that petrol reaches less easily. Cold starting does demand some method, however, and filter maintenance is not optional.
Ease of use has been looked after for the category. Starting is by key, with no pull cord, thanks to a 12 volt 30 amp-hour battery fitted as standard. The control panel groups a voltmeter, an hour meter, overload protection and an oil level cut-out that stops the engine before damage occurs. A wheel and handle kit lets you move the unit's 148 kilos over hard ground, preferably with two people.
For anyone still hesitating with a petrol model, the question is not just purchase price. If you need to power a job site several hours a day or secure a building, this diesel is in its element. For lighter, occasional and mobile use, turn instead to an inverter generator such as the Scheppach SG2500i, four times lighter and far quieter, or to a portable power station if total silence and no fuel matter most.
EAN: 4046664300953
Comparison
At around 1,300 euros, the SG5200D does not really compete with portable generators, but measuring the gap is instructive. Here is how it sits against the SDMO Perform 3000, a lighter petrol site unit, and the Einhell TC-PG 35, the entry-level petrol model in our catalogue.
| Criterion | Scheppach SG5200D | SDMO Perform 3000 | Einhell TC-PG 35 |
|---|---|---|---|
| Fuel | Diesel | Petrol | Petrol |
| Peak output | 5,000 W (400 V) | 2,800 W | 3,100 W |
| Three-phase socket | Yes, 400 V | No | No |
| Tank | 16 L | 4.1 L | 15 L |
| Starting | Electric, key | Manual pull cord | Manual pull cord |
| Weight | 148 kg | 45 kg | About 38 kg |
| Observed price | ≈ 1,299 € | ≈ 635 € | ≈ 343 € |
The table speaks for itself: these three machines do not serve the same purpose. The Einhell TC-PG 35 is a light, cheap standby unit, ideal for a pump or emergency lighting. The SDMO Perform 3000 steps up in build quality with its Kohler engine while staying carryable by two people. The Scheppach plays in another division: it is the only one offering 400 volt three-phase, the only one starting on a key, and the only one whose runtime is measured in working days rather than hours. If you do not need three-phase, its weight and price are not justified. If you do, it has virtually no rival under 1,500 euros.
Our tester's review: Christophe Delpuech
The context needs setting: with the SG5200D you leave the world of generators you take camping and enter that of site equipment. A hundred and forty-eight kilos, a sound-insulated steel canopy and a diesel engine that starts on a key bear no comparison to a twenty kilo inverter. What justifies the bulk is something few rivals offer at this price: a genuine 400 volt three-phase socket, quoted at 4,200 watts continuous and 5,000 at peak. For running a stationary mitre saw, a cement mixer or a welding set on a plot with no mains connection, it is exactly the right tool. Choosing diesel makes sense over time: at equal load, consumption is lower than petrol, torque arrives sooner, and a well maintained diesel takes thousands of hours. The sixteen litre tank covers a good working day without a jerry can, and the 12 V 30 Ah starting battery is included, where some rivals charge extra for it. The AVR regulator does its job on resistive loads, but this is not an inverter: we would not plug a laptop or a games console into it without a UPS in between. Two reservations. The first is obvious on site: it is loud, around 71 decibels measured at a distance, and a single cylinder diesel vibrates. You do not run it next to a terrace or in a housing estate on a Sunday morning. The second concerns maintenance: filters, oil changes and bleeding the fuel circuit demand a minimum of discipline, otherwise cold starting turns temperamental. For occasional professional use or building backup, the power-to-price ratio remains very hard to beat.
Frequently asked questions: Scheppach SG5200D diesel generator
It is not advisable. The SG5200D has an AVR regulator that steadies the voltage, but this is not inverter technology: power quality remains below that of the mains. For sensitive electronics, go through a UPS in between, or choose an inverter generator instead.
At two thirds load, quoted consumption is around 1.43 litres per hour, which represents close to eleven hours of running. At full load, expect nearer seven to eight hours. This is one of diesel's advantages over petrol at equivalent output.
Yes, a 12 volt 30 amp-hour battery ships with the unit, which is what allows key starting without a pull cord. Some rivals charge for it as an option, which is worth bearing in mind when comparing advertised prices.
Portable is a big word for 148 kilos. The wheel kit and handles let you move it over hard ground, ideally with two people, but loading it into a vehicle needs a ramp or a tail lift. Treat it as a semi-fixed installation.
Published on 25/07/2026