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With an emergency power generator, also called an emergency generator, power failures can be easily bridged. These small power plants can be vital: in the event of a power failure in a hospital, for example, they ensure that the lighting and machinery continue to function. In a nuclear power plant, they guarantee that the fuel rods are cooled even if the power supply fails. However, such a genset is not only designed for emergencies; it can also contribute to a flexible power supply.
Those who think that power generators are of little importance should think back to 4 November 2006. At that time, almost 10 million households in Europe were affected by a blackout that lasted two hours in some places. In the nuclear disaster in Fukushima, power generators were flooded by a devastating tsunami and three reactors suffered catastrophic meltdowns.
Emergency power generators are island-connected machines that produce electricity. Even though the name suggests it, such a power generator is not just for emergencies: Wherever electricity is needed for work but no power source is available, an emergency power generator can be used as a practical solution.
A power generator is like a mini power station. The main components are an internal combustion engine and the generator connected to it. Diesel, petrol or gas can be used to drive the combustion engine. Combustion produces mechanical energy, which is passed on to the generator. The generator converts it into electricity. The power output or size of the power generator can vary greatly; the market offers a wide selection.
Basically, a distinction must be made between stationary and mobile gensets for power generation. The latter are characterised by their compact design. Smaller power generators are usually portable and ready for use in just a few steps. Larger, stationary models, on the other hand, can achieve a high level of performance, for example, to reliably supply a certain part of a clinic with electricity after a blackout.
A diesel-powered power generator is usually more powerful than petrol-powered models. The latter are more suitable for small-scale private use (for example, for the music system at a party). The higher the power rating, the more devices can be connected to such a generator at the same time.
Gas is an alternative to diesel or petrol. The construction and mode of operation of the corresponding power generators are similar to petrol or diesel models; however, gas-powered generators offer less power than diesel-powered generators.
With inverter technology, the generator and the integrated combustion engine work independently of each other. An advantage is the option to adjust the engine speed downwards in partial load mode to the amount of energy required. In this mode, such a power generator can operate more quietly and with lower fuel consumption.
In the industrial sector, powerful power generation solutions are often required. The emergency generator models described above are only suitable to a limited extent. Gas turbines are often required to drive the generator.
Another variant are power generators that work with rechargeable batteries and are connected to an inverter. Such solutions are power generators whose operating time is limited. With combustion engines, petrol or diesel can always be refilled. If you want to bridge even long interruptions in the public power grid, you may be taking a risk in the case of a battery-operated model with regard to security of supply.
Such powerful variants are also available. As a rule, the batteries initially take over operation. If it is only a short breakdown, battery operation should be sufficient. For longer periods, the internal combustion engines can start up at a later time. Battery operation can also be considered as a further level of safety if the supply of electricity must be ensured in any case.
To find a suitable power generator, you need to be clear about the area of use and the associated power requirements. For private use (for example, camping), a small mobile version is usually sufficient. In the commercial sector, a large, stationary unit should be chosen for a reliable power supply.
It is easy to determine the power consumption of connected devices. It is therefore quickly clear what the minimum power rating of such a genset must be. It is advisable to have buffers for the power capacities within a range of 20 to 30 percent. In this case, the power supply remains secure even if another unit is connected. And such a buffer is also distributive in the long term, because with it the genset does not always have to be used at maximum power. Constant use at maximum power can have a negative effect on the service life of the motor.
Prospective buyers can choose between diesel, petrol, gas engines, battery-powered models and inverter technology. The choice of the right engine depends directly on the application: the more power a unit has to deliver, the more likely it is to be petrol or diesel. For short-term use or emergency operation, gensets with batteries can be an appropriate solution.
Power generators with inverter technology offer the most flexibility. They generate high-quality electricity that is an equivalent alternative to mains electricity. If the quality of the electricity plays a decisive role, then the choice should go to a power generator with inverter technology.
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