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It was already mentioned above about the gradation of diesel generators in terms of power and number of revolutions per minute. But these are not the only criteria that are significant for the selection. Synchronous installations withstand prolonged overloads well. Accordingly, they do not need additional devices for amplification at the start. However, asynchronous technology undoubtedly wins when it comes to reliability, durability and minimal interference to radio communications.
Industrial power generators can supply single-phase or three-phase current. In the second case, you can vary the voltage (220 or 380 V). Systems with a single electrical phase do not differ in this flexibility.
The difference between stationary and mobile diesel generators (as well as diesel power plants based on them) is clear without additional comments. Open-type devices can only be installed in specially equipped rooms. Where dust or precipitation can get on the diesel generator, it is advisable to use closed (equipped with a casing) devices.
And for operation in particularly difficult climatic conditions, it is recommended to use container generators.
It is also worth noting that some devices immediately produce high voltage currents. Other systems pre-use step-up transformers. The second option is relevant when a voltage of 6300 or 10500 V is required. Sometimes the difference is due to nuances:
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oil supply;
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cooling systems;
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fuel supply complexes;
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diesel starting systems;
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heating devices;
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control panels;
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coordinating automation;
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electricity distribution boards.
What it is?
When describing an industrial diesel generator of electricity, it is worth pointing out that such a device can be used for:
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autonomous;
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emergency;
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spare power supply for various objects, installations and premises.
Diesel, generating current, is mounted on a single welded frame. A rigid coupling is used to connect it to the generator. Compression of the fuel is unnecessary in this arrangement and therefore compressors are usually not used. The power of the devices ranges from 5 to 2000 hp. with. The rate of rotation is usually not less than 375 and not more than 1500 revolutions per minute.
In any case, do not confuse special terms. So, it is correct to call a diesel generator only the bundle of a motor and an electric generator itself. The term “diesel-electric unit” is broader. It also covers the support frame, fuel tank and control and monitoring devices. And when a professional talks about a diesel power plant, he means the entire stationary or mobile installation, which also includes:
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power distribution systems;
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automatic control systems;
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protection devices;
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manual control panels;
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spare parts kits.
Popular models
The Perkins AD-500 diesel generator is in demand by consumers. As the name implies, the device delivers up to 500 kW of current per hour. The three-phase device fully complies with the requirements for industrial installations. It can be used for both main and backup power supply. The generated current has a voltage of 400 V and a frequency of 50 Hz.
It is worth taking a closer look at the products of the company "Azimut". It manufactures diesel generators from 8 to 1800 kW. Therefore, you can choose a device for every taste and wallet. For example, the AD-9S-T400-2RPM11 model provides a constant power of 9 kW.
If you need 80 kW power, it is recommended to take a closer look at FPT GE NEF. The proprietary 4.5-liter engine is designed for at least 30,000 operating hours.No more than 16 liters of fuel are consumed per hour (even in maximum mode). The increased efficiency is largely due to the well-thought-out Common Rail starting system.
Finally, it is worth considering two more interesting models. We are talking about Europower EP 85 TDE. This Belgian development costs over one and a half million rubles. In an hour, 14.5 liters of fuel will be pumped out of a 420 liter tank. The power of the generated current is 74 kW. The device will provide a voltage of 380 or 400 V.
And the Pramac GSW110i will be a worthy completion of the review. An excellent Italian diesel generator equipped with 4 working cylinders. A ¾ load will consume 16.26 liters of fuel. Liquid cooling is provided. Other important parameters:
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electric start;
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power factor - 0.8;
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current rating - 157.1 A;
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fuel tank capacity - 240 liters;
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open execution scheme;
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total weight - 1145 kg.
An overview of the Dalgakiran diesel generator is presented in the video below.