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Diesel generators & emergency generators

Diesel generators provide a reliable power supply for high power requirements or when continuous operation is necessary. With comparatively low fuel consumption, long running times and a robust design, a diesel emergency power generator is ideal for construction sites, industry or trade. However, it is also often used to secure the supply in the event of power failures .

At ELMAG, you will find powerful diesel generators with reliable branded engines. Many of our products are soundproofed and equipped with automatic control, AVR control or inverter technology for sensitive electronics . From compact devices from 3.1 kW to large high-performance solutions with an output of over 500 kW: Discover the right emergency power generator for your requirements in our online shop.

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103 Products

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Items 1-12 of 103

  1. Power generator SED 13500WDE-AVR
    SKU: 53236 Power generator SED 13500WDE-AVR with LOMBARDINI 25LD 425 engine with exchangeable fuel tank, electric start and AVR control *for stationary use only
    400 / 230/50 V/Hz 13.5 kVA 12.7 kVA 18 A 5 kVA 4.6 kVA 20 A Diesel Show more
    € 5.388,00
    € 5.388,00 Incl. Tax
    € 4.490,00 Excl. Tax
    Normal-Price
    Incl. Tax: € 7.650,00 -30%
    Residual amounts available
    Details
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  2. Power generator SEDSSR G60RS V - RENTAL
    SKU: 52312 Power generator SEDSSR G60RS V - RENTAL with JCB diesel engine 430 TA5-55
    with MECC ALTE V-Type alternator
    with particle filter system
    with ILMS for optimised regeneration
    Rated power: PRP 58kVA 230/400Volt
    Fuel tank 276 litres
    58 kVA 58 kVA 2800x1100x1715 mm Diesel 2010 kg 276 l 10.1 l/h 65 dB(A) Show more
    € 48.750,00
    € 48.750,00 Incl. Tax
    € 40.625,00 Excl. Tax
    In stock, immediately available
    Details
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  3. Generator SED 7000WD-AVR
    SKU: 53210 Generator SED 7000WD-AVR with HATZ 1B40 engine with increased unbalanced load capacity and AVR control
    400 / 230/50 V/Hz 7 kVA 6.5 kVA 8 A 3.8 kVA 3.4 kVA 14.4 A Diesel Show more
    € 3.900,00
    € 3.900,00 Incl. Tax
    € 3.250,00 Excl. Tax
    Normal-Price
    Incl. Tax: € 5.562,00 -30%
    In stock, immediately available
    Details
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  4. SEDSS 44WDE-AVR-DSE4520-V2 generator
    SKU: 00759 SEDSS 44WDE-AVR-DSE4520-V2 generator with KUBOTA engine V3800DIT (super-silenced) Stage 3A for stationary use incl. trickle charger DSE 9150 and 1 o'clock socket CEE 63A-400 Volt on the rear of the unit for building power supply
    400 / 230/50 V/Hz 44 kVA 40 kVA 58 A 15.4 kVA 14 kVA 61 A Diesel Show more
    € 30.378,00
    € 30.378,00 Incl. Tax
    € 25.315,00 Excl. Tax
    Residual amounts available
    Details
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  5. SEDSS 7000WDE-AVR-DSE3110 generator
    SKU: 53226 SEDSS 7000WDE-AVR-DSE3110 generator with HATZ 1B40 engine with interchangeable fuel tank, increased unbalanced load capacity, electric start and AVR control (super-silenced)
    400 / 230/50 V/Hz 7 kVA 6.5 kVA 9.4 A 3.8 kVA 3.4 kVA 14.4 A Diesel Show more
    € 11.400,00
    € 11.400,00 Incl. Tax
    € 9.500,00 Excl. Tax
    Normal-Price
    Incl. Tax: € 12.762,00 -11%
    In stock, immediately available
    Details
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  6. Generator SED 7000WDE-AVR
    SKU: 53211 Generator SED 7000WDE-AVR with HATZ 1B40 engine with increased unbalanced load capacity, electric start and AVR control
    400 / 230/50 V/Hz 7 kVA 6.5 kVA 8 A 3.8 kVA 3.4 kVA 14.4 A Diesel Show more
    € 4.674,00
    € 4.674,00 Incl. Tax
    € 3.895,00 Excl. Tax
    Normal-Price
    Incl. Tax: € 6.936,00 -33%
    In stock, immediately available
    Details
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  7. SEDSS 243WDE-AVR-DSE4520-V2 generator
    SKU: 00754 SEDSS 243WDE-AVR-DSE4520-V2 generator with KUBOTA engine V1505 (super-silenced) Stage 3A for stationary use only incl. trickle charger DSE 9150 and 1 o'clock socket CEE 32A-400 Volt on the rear of the unit for building supply
    400 / 230/50 V/Hz 24 kVA 23 kVA 33 A 8.8 kVA 8 kVA 35 A Diesel Show more
    € 16.590,00
    € 16.590,00 Incl. Tax
    € 13.825,00 Excl. Tax
    Normal-Price
    Incl. Tax: € 21.330,00 -22%
    In stock, immediately available
    Details
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  8. SED 6000W-AVR generator
    SKU: 53206 SED 6000W-AVR generator with HATZ engine 1B40 with AVR control
    230/50 V/Hz 6 kVA 5.4 kVA 23 A Diesel 3000 rpm air-cooled Hatz 1B40 Show more
    € 4.698,00
    € 4.698,00 Incl. Tax
    € 3.915,00 Excl. Tax
    In stock, immediately available
    Details
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  9. Generator SED 3000W-AVR
    SKU: 53200 Generator SED 3000W-AVR with HATZ engine 1B20 with AVR control
    230/50 V/Hz 2.8 kVA 2.5 kVA 11 A Diesel 3000 rpm air-cooled Hatz 1B20 Show more
    € 2.754,00
    € 2.754,00 Incl. Tax
    € 2.295,00 Excl. Tax
    Normal-Price
    Incl. Tax: € 3.462,00 -20%
    In stock, immediately available
    Details
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  10. SED 6000WE-AVR generator
    SKU: 53207 SED 6000WE-AVR generator with HATZ 1B40 engine with electric start and AVR control
    230/50 V/Hz 6 kVA 5.4 kVA 23 A Diesel 3000 rpm air-cooled Hatz 1B40 Show more
    € 6.420,00
    € 6.420,00 Incl. Tax
    € 5.350,00 Excl. Tax
    In stock, immediately available
    Details
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  11. SED 4200W-AVR generator
    SKU: 53202 SED 4200W-AVR generator with HATZ engine 1B30 with AVR control
    230/50 V/Hz 4.2 kVA 3.7 kVA 17 A Diesel 3000 rpm air-cooled Hatz 1B30 Show more
    € 3.138,00
    € 3.138,00 Incl. Tax
    € 2.615,00 Excl. Tax
    Normal-Price
    Incl. Tax: € 3.912,00 -20%
    In stock, immediately available
    Details
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  12. Complete emergency power package SED 7000WDE-ASS-DSE4520
    SKU: 00496 Complete emergency power package SED 7000WDE-ASS-DSE4520 DIESEL generator with HATZ 1B40 engine, including automatic start-stop on mains failure with DSE 4520 and 63A M-LTS, fully operational and ready to connect, control panel and automatic network switching in external control cabinet for wall mounting, including 3m connecting cable, battery trickle charger, 3-phase mains monitoring (standard switch panel is not required), now NEW: includes 20 litre exchangeable tank (instead of standard tank) and connection for exhaust pipe
    400 / 230/50 V/Hz 7 kVA 6.5 kVA 9.4 A 3.8 kVA 3.4 kVA 14.4 A Diesel Show more
    € 10.494,00
    € 10.494,00 Incl. Tax
    € 8.745,00 Excl. Tax
    In stock, immediately available
    Details
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Advantages of diesel generators from ELMAG

Diesel generators offer a unique combination of efficiency, durability and economy , making them the preferred choice for professional applications. In direct comparison to petrol, PTO and welding generators, they offer decisive advantages that pay off, especially with intensive use and high performance requirements.

The most important advantages at a glance:

  • Higher energy efficiency: diesel engines convert fuel into electrical energy more effectively and therefore often achieve better efficiencies than petrol generators - especially with outputs in the higher kVA range.
  • Low operating costs: The lower fuel consumption significantly reduces running costs - especially during continuous operation and high utilisation.
  • Long running times: Large tank volumes enable uninterrupted operation over many hours to days - ideal for emergency power supply and use on construction sites.
  • Independence from other drive sources: In contrast to PTO power generators, which require a tractor as a drive, diesel gensets operate completely self-sufficiently and can therefore be operated regardless of location.
  • Universal area of application: Unlike generators designedfor welding work , diesel generators supply all electrical consumers.
  • Exceptional durability: Diesel engines achieve significantly higher operating hours than petrol engines and are suitable for continuous operation.
  • Robust design: The stable construction ensures reliable operation even under adverse conditions such as dust, heat or cold.
  • Greater safety: Diesel is less flammable than petrol. This significantly reduces the risk of fire during storage and operation - an important factor in safety-critical areas.

Although the oil, air and fuel filters of a diesel engine need to be changed regularly and the injection system checked, this higher maintenance effort is more than compensated for by the significantly longer service life and lower operating costs. Diesel generators are therefore often the most economical solution for users who need a reliable power supply.

Areas of application for diesel emergency generators

Diesel generators are versatile energy solutions that are used in numerous sectors and areas of application. From construction sites and industry to critical emergency power supplies - diesel gensets demonstrate their strengths wherever a reliable, powerful and economical power supply is required.

The most important areas of application:

  • Construction sites and trade: reliable power supply for power tools, construction machinery, concrete mixers, cranes and lighting systems on construction sites without a mains connection. Long running times minimise interruptions and increase productivity. Soundproofed models also allow use in residential areas.
  • Industry and commerce: Safeguarding production-critical processes, production facilities or cooling systems against power failures. The automatic start function (ATS) prevents costly production downtimes and the use for peak load coverage reduces grid charges in multi-shift operation.
  • Emergency power supply for buildings: uninterruptible power supply for hospitals, care homes, data centres, telecommunications systems and security-relevant facilities. Automatic grid monitoring starts the generator within 10-15 seconds and complete emergency power packages with grid switching and remote monitoring guarantee maximum availability.
  • Agriculture and forestry: mobile power supply for remote operating sites, stables, irrigation systems and workshops far away from the grid connection. Long operating times without refuelling enable multi-day use during harvest times, outdoor farming and forestry work.

Special highlights of ELMAG diesel generators:

ELMAG diesel power generators impress with well thought-out equipment details and proven technology components that are specially tailored to professional requirements. From compact gensets to powerful industrial generators, our models offer the perfect solution for every application.

  • Proven brand engines: High-quality diesel engines from KUBOTA, HATZ and LOMBARDINI guarantee reliability and a long service life. Our premium engines are designed for continuous operation and impress with their low consumption and high power output.
  • Super sound insulation of the SEDSS series: Weatherproof sound insulation bonnets significantly reduce operating noise and enable use even in residential areas, hospitals, noise-sensitive environments or during night-time operation.
  • Professional DSE controller with AVR regulation: Modern Deep Sea Electronics (DSE) controllers with electronic voltage regulation (AVR) guarantee a constant output voltage and extensive monitoring functions. Ideal for sensitive loads and precise parameterisation.
  • Complete emergency power packages: Ready-to-use emergency power solutions with automatic mains monitoring (ATS), mains switchover, battery trickle charger and external control cabinet for wall mounting. Simply connect and immediately secure against power failures.
  • Extensive power range: From 3.1 kW to over 500 kW, ELMAG diesel generators cover all requirements - from mobile tradesmen's generators to stationary industrial systems. We have the right model for every application.

Rely on proven ELMAG products with professional advice, fast service and a comprehensive range of accessories. Our experts will support you in selecting the optimum power pack and will also be on hand with help and advice after your purchase. See for yourself and invest in a reliable power supply!

Frequently asked questions

Which is the best diesel generator set?

When choosing the best diesel generator, it is advisable to compare the technical specifications of the respective models in order to find the product that suits your requirements. For example, mobile generators with 5-15 kW are suitable for construction sites, while industrial and emergency power supplies often require 30-100 kW or more. Look out for quality features such as branded motors, AVR control, automatic start function or sound insulation. Our experts will be happy to provide you with further information and advice on choosing the ideal emergency power generator.

Which is better, a petrol or diesel generator?

A diesel emergency power generator is more efficient, has a longer service life and is better suited to continuous use. However, it is more expensive to purchase and requires more maintenance. A petrol generator, on the other hand, is cheaper, lighter and easier to maintain. However, they are less efficient over longer periods of use and have a shorter service life.

What is the difference between a generator and a power generator?

The terms are often used interchangeably, but technically they refer to different components. A generator is the electrical component that converts mechanical rotation into electrical energy. A generator is the complete system consisting of engine (petrol or diesel), generator, tank, control unit and housing.

How long does diesel last in an emergency power generator?

Under optimum storage conditions (cool, dry, dark, airtight), diesel lasts for around 6 months without any significant loss of quality. With diesel stabilisers, the shelf life can be extended to up to 2 years. After prolonged storage, residues and deposits can form that clog the pipes and injection system. For emergency power generators, we therefore recommend changing the diesel every six months or regular trial runs to circulate the fuel and keep it fresh.

What does a diesel generator consume?

The average consumption is 0.2 to 0.5 litres of diesel per kWh generated, depending on engine efficiency and load. Modern diesel generators with AVR control automatically adjust the fuel requirement to the actual load.

How many kW must an emergency power generator have for a detached house?

For the basic supply of a single-family home (lighting, refrigerator, heating, a few sockets) , 5-8 kW is sufficient. If an electric cooker, washing machine, heat pump or other electricity-intensive consumers are also to be operated, 10-15 kW is required. Add up the power of all appliances used at the same time and allow for a 20-30 % safety reserve. A professional load calculation by our experts will help you to find the optimally dimensioned genset and avoid oversizing or undersizing.

How long can an emergency power generator be left running?

Professional diesel emergency power generators are designed for continuous operation and can theoretically be operated indefinitely, provided that fuel is topped up and regular maintenance is carried out. For emergency power supplies to critical infrastructures, the gensets can run continuously for several days to weeks without any problems. Sufficient cooling air, regular oil level checks and monitoring of the operating temperature are important for safe continuous operation.

How often does an emergency power generator need to be serviced?

The maintenance intervals depend on the operating hours: Oil change every 100-250 hours, air filter change every 200-500 hours, fuel filter every 500 hours. For rarely used emergency power generators, we recommend at least an annual inspection with test run, battery check and fuel check. Intensive commercial use requires shorter maintenance intervals. In addition, the coolant, V-belt, battery and fuel system should be checked regularly. Detailed information on maintenance is included with every ELMAG diesel generator.