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How to choose a diesel generator?

Wide range of diesel generators requires correct selection of the most suitable model. To accomplish it, it is necessary to take into account many requirements and nuances, which will allow you to avoid various emergency situations in the future. And qualified specialists can provide the most effective assistance in this regard. However, in order to be more prepared to communicate with them, you should become a little familiar with the parameters for selecting these units. Why do you need our recommendations?

You can get acquainted with examples of a variety of models in the section diesel generators >>>

So, The choice of diesel generator is carried out by answering the following questions:

Dependence of the choice of diesel generator on the scope of its use

Initially, you, as a consumer, you need to decide what source of power supply you will need a generator– autonomous or backup. This is extremely important to decide at the first stage, because today there are various diesel generator sets, the parameters of which correspond to the selected operating mode. Moreover, the power values, model, design are largely determine the cost of the device.

It is not difficult to identify priorities. If you have no other opportunity to create a power supply other than offline, then the generator set must be able to work continuously for a long time. If there is a supply from the central power supply network, but its quality does not meet the requirements of the equipment used or emergency situations become frequent, then reliable insurance in this situation will be provided by backup diesel power plant.

Determining the required power

In connection with the initial priorities, the appropriate generator power is selected, which is an equally important step.

At this stage Don't try to save money. For example, selecting a device based on the total load of the electrical receivers you use will significantly limit the possibilities for connecting additional loads. This can lead to overload of the diesel generator set. If a high resource is included in the resource of a power plant, then operating the unit at partial capacity may negatively affect its functionality.

We recommend select generating equipment in such a way that the total load on it remains approximately 25% reserve of rated power. That is, the load range that will be optimal for the functionality of the diesel generator set should be within 35-75% of the total power indicated in the technical data.

Calculating generator power is easy, it is enough to summarize the parameters of all connected loads. This data is easy to find on the Internet in the form of tables. There are also ready-made recommendations for the power values ​​of the selected settings:

• For a country cottage, where a standard set of household appliances plus several lighting fixtures is used, a low-power power plant in 2-5 kilowatts.
• In case of permanent residence in a country house, where not only household appliances are used, but also a lot of other equipment - to maintain the operation of water purification and water treatment systems, etc., then we recommend purchasing a generating unit, the power of which is in the range 5 - 40 kilowatts.

There is a whole series of industrial generators that have proven themselves to be effective in creating an autonomous or backup power supply at production sites, small businesses and office buildings. The power of these devices, depending on technical requirements, can already reach 1600 kW, and scalability into a complex of several diesel generator sets is also provided with a corresponding increase in power rating to extremely high values. These installations are also used on a number of objects of social significance.

There is a whole industrial generator series, which have effectively proven themselves in creating an autonomous or backup power supply at production sites, small businesses and office buildings. The power of these devices, depending on the technical requirements, can already reach 1600 kW, and scalability into a complex of several diesel generator sets is also provided with a corresponding increase in power rating to extremely high values. These installations are also used on a number of objects of social significance.

And here you can study examples of high-power diesel generators from 1000 kW >>>

In order to have an accurate idea of ​​the power of the selected unit, you should carry out several measuring and mathematical procedures:

• At the first stage, peak load or extreme values ​​of power consumed by loads are established.



Electricity consumers that emit heat during operation are classified as. In order to install total active load, you need to add up the power consumption values, which are expressed in kilowatts. It is also important to consider that for synchronous generator, which you chose must be added to the total figure another 15-20% power reserve.



• The next step is to clearly calculate the total amount of inductive load.



In this case, the corresponding values ​​of consumers are taken into account, which, according to the principle of operation, relate to electrical equipment inductive type. That is, at certain moments, usually during startup, these loads consume electric current, the values ​​of which are several times higher than the rated ones. The list of such equipment includes compressors, drills, refrigerators, pumping equipment, elevators and much more, the design of which contains an electric motor. It is thanks to him that at the moment of start the energy consumption increases several times. To ensure their functionality, a certain resource must be included in the generator set.

When all the recommended data for selecting a diesel generating unit have been obtained, it is necessary to include a certain resource in this information for possible improvement of the electrical part of your home or office. That is, to have the opportunity to purchase or connect additional equipment in the future. This approach will ensure a reasonable investment in reliable equipment that will be used for a very long period.

We also recommend when creating a backup source of energy supply to save money draw up a reasonable diagram for connecting power plants to the generator. If the voltage in the main network disappears, it is not at all necessary to connect all devices, but it is enough to highlight the most critical, for example, a refrigerator, computer, TV or water treatment system, the shutdown of which can be associated with catastrophic consequences. In this case, you can “reduce” the power of the selected diesel generator set, which will affect its cost.

Finally, let us draw your attention to the fact that the operation of some pantographs can create nonlinear and linear distortions, which negatively affect the output voltage parameters, and therefore the power of the generating set. In order to reduce these risks, When choosing an installation, we recommend providing the supplier with the most complete load data possible.

How to select the required number of phases?

The phasing of the generating plant clearly determines the scope of its use. For example, to operate a diesel generator in household networks, it is quite enough single-phase installation, which provides energy potential to the corresponding equipment that does not have high inrush currents. Such power plants are characterized by low power and are capable of delivering 220 V. Three-phase generators(380 V) are more often used for industrial purposes. If the private sector uses three-phase consumers, then one should also opt for such power plants. By the way, single-phase loads can also be connected to them, so it is extremely correct that prevent phase imbalance.

Selecting the type of diesel generator

There are synchronous generators, as well as asynchronous type installations. The difference lies in their design, as well as in the performance of the diesel generator set.

Asynchronous used in applications where high precision output voltage is required. This is typical for equipment that is sensitive to various changes in voltage conditions: medical equipment, precision electronic devices. DGSs of this type are also needed to supply electrical appliances with reactive power up to a third of their rated power.

Synchronous power plants are effective in cases where they are used as backup at a variety of facilities that do not require high precision output voltage. And also in situations where a higher reactive voltage is required - up to 65% of the load rating.

How to decide on the engine type?

Diesel generators use different types of engines:

• low speed (1500 rpm)
• high-speed (3000 rpm).

The choice of one design or another should be based on operating conditions of the power plant. In particular, light use mode(no more than 500 operating hours throughout the year), provides for operation generating plant with high-speed engine. However for in high load mode, when the duration of operation increases significantly, it is better to opt for DGS with low speed engine. This device has a higher motor life and a lower noise level. Their only drawback is their higher cost for the same power level.

• engine diesel generator should not work with light loads and at idle speed;
• prolonged downtime should not be allowed, if such a situation arises, then every 100 engine hours you need to activate the diesel power plant for two hours at 100% load;
• characteristic signs of overload manifests itself in overheating, the appearance of soot, a decrease in power, and interruptions.

Influence of operating conditions on the choice of diesel generator

The importance of operating conditions has been repeatedly mentioned in the previous paragraphs. They also influence the choice of type of device, as well as the method of its installation..

If possible, adapt it as an auxiliary separate room, then it is necessary take care creating reliable ventilation, sound insulation and increased fire safety. Also need to think about it fuel pumping systems, heating and alarm systems. But you can save money by choosing a diesel generator set with an open design mounted on a steel frame.

It will help you reduce installation time and eliminate the need to prepare the premises. power station in an all-weather container, which allows installation of the unit directly in the open air, regardless of the climatic factor. In addition, the container will provide the highest possible noise insulation.

Intermediate option - noise protection casing– effective in cases where only noise insulation and protection of a generator placed outdoors from the effects of low temperatures and precipitation are required.

In some cases, diesel generator sets need to be transported to another location, which is an important condition for the operation of drilling rigs, construction crews, etc. In such a situation it is selected trailer type power plant, which consists of two parts: the generator itself and different types of chassis.

You can find out more by studying the model catalog mobile diesel power plants >>>

Influence of diesel generator operating time on choice

This parameter is directly related to the volume of the power plant’s fuel tank, as well as the ability to install additional tanks and a more capacious tank. An automatic fuel supply system without operator participation will also improve the continuity of operation.

Solution buy a diesel generator usually adopted if autonomous or backup power supply is vital. A diesel power plant is the choice that provides such advantages as reliability, small size, fire and electrical safety, with appropriate measures - the required noise level of the diesel generator set, the ability to automatically return the diesel generator set to operating mode in the event of a loss of high-quality mains power supply, followed by long-term operation without presence people, efficiency in fuel consumption (a diesel generator is much more economical than a gasoline generator). With all their advantages relative to their gasoline counterparts, diesel generators are significantly more expensive, and your natural desire will be one that fully satisfies your needs. In order to make absolutely accurate choosing a diesel generator Taking into account all the nuances and requirements, to protect yourself from future problems that even small flaws can cause, you will need the help of a specialist. However, in order to decide on an option yourself and be more prepared to communicate with representatives of the equipment supplier, it will be useful for you to familiarize yourself with our recommendations. So, how to choose a diesel generator (diesel power plant)?

Mode of application

Your first step when choosing a diesel power plant There must be a decision as to whether your generator set should be a stand-alone or standby source of electricity. This decision is important, since the power, model, and therefore the cost of the equipment depend on the operating mode of the diesel generator set. The choice in this case is quite simple. If you do not have another power source other than the purchased diesel generator set, then you will need it as an autonomous source. If your equipment is already powered from a centralized network, but you want to avoid undesirable consequences from the disappearance or poor quality of power supply (which happens very often in our country), then you will need a backup power plant.

Power plant power

One of the most critical moments when choosing a diesel generator is the correct choice of power, since its cost largely depends on it. In addition, if the power of the power plant you have chosen is close to the design power of your electrical receivers, then in the event of a further increase in the load, the diesel generator set may be overloaded. If the power of the diesel generator you have chosen is too high, this may have a bad effect on its operation. Our recommendations - the diesel generator set should not operate for a long time at a load that is less than 25% of its rated power. The optimal load range for long-term and efficient operation of the power plant is 35-75% of its nominal value. If you need a diesel generator set at your dacha, where you use a standard set of household appliances in the form of several light bulbs, an iron, a TV, a refrigerator, etc. A low-power power plant - 2-5 Kilowatts - is quite enough for you. If you are the owner of a country house, then to satisfy all your needs for high-quality power supply you need to purchase a power plant with a capacity of 5 to 40 kilowatts. If it is necessary to use diesel generators in some areas of activity, such as production, construction, transport system, healthcare system, banking system, etc., then the availability of powerful diesel generators (power can reach 1600 kW or more) and the possibility of their parallel operation make the scope of use of diesel power plants practically unlimited. So how do you calculate the power rating your diesel generator should have? To do this, it is necessary to determine the peak load, i.e. the total power of all electricity consumers when they are used simultaneously. First of all, we calculate the total active load. This includes loads resulting from the operation of incandescent lamps, electrical appliances, heating equipment, i.e. anything in which heat is generated as a result of the action of electric current. Electricity consumers that only have an active component of power are called active. The total active load is determined by adding the values ​​of power consumed by various devices and is expressed in kilowatts. It must be added that if you have chosen a power plant with a synchronous generator, then you need to add a 15-20 percent power reserve to this amount. Next, we calculate the total inductive load. This includes loads resulting from the operation of inductive-type electrical equipment, which fundamentally uses a starting current that is several times higher than the rated current. Such equipment includes refrigeration units, pumps, drills, saws, compressors, electric motors, etc. During startup, such electrical equipment requires more than rated power, and therefore, when calculating, it is necessary to increase its total rated power by 2.5-3 times. After you have calculated the total power of all existing electricity consumers, taking into account the necessary reserves, you should take into account the possible future increase in power consumption associated with the expansion of a country house, the growth of production capacity, etc. All the power reserves that you have made will ensure the long-term operation of your power plant and save it from overload and failure. If you, in the event of a loss of the centralized network, cannot provide power supply from a diesel power plant to all consumers, it is necessary to identify important (critical) consumers from them, whose shutdown can lead to serious consequences (for example, a heating system). For the rest, it is necessary to ensure mandatory shutdown while the diesel power plant is operating. Otherwise, it may become overloaded. In conclusion, it should be said that some current collectors have a negative effect on the output voltage, and therefore on the power of the diesel generator set, introducing linear and nonlinear distortions. Therefore, for an accurate determination, it is necessary to provide the supplier with complete information about the load.

Number of phases

Depending on the purpose for which you are going to use the diesel power plant, you need to decide on the number of its phases. When using single-phase current collectors (mainly in household networks), when there are almost no starting loads and the power consumption is low, you need a single-phase power station (220 V). Three-phase power plants (380 V) are used mainly for industrial purposes, as well as for power supply to the private sector with three-phase network wiring and provide consumers with both a voltage of 220 V (between zero and phase) and a voltage of 380 V (between two phases). One of the conditions for the normal operation of a three-phase diesel generator is the approximate equality of power consumed in different phases. The power difference between different phases should not exceed 20-25%. There are also three-phase power plants for 220 V (between zero and phase - 127 V, between two phases - 220 V). They are used only for lighting.

Generator type

According to their design, generators are divided into synchronous and asynchronous. Asynchronous generators are capable of maintaining the output voltage with high accuracy and, therefore, are used to power voltage-sensitive equipment (various electronic devices, medical equipment). They can also power electrical equipment with reactive power up to 30% of their rated power. Synchronous generators are not as accurate, but are quite suitable for backup power supply of construction sites, refrigeration units, offices and country houses. In addition, they easily power electrical equipment with reactive power up to 65% of their nominal value.

Generator neutral mode

If you have chosen a mobile power station, then the neutral of its generator must be insulated. If your current collectors are stationary, then the neutral mode of your diesel power plant and protective measures must comply with the standards of network stationary electrical receivers. Therefore, the neutral of such a power plant must be solidly grounded.

Engine selection

There are two types of engines for diesel generators: high-speed (3000 rpm) and low-speed (1500 rpm). When choosing a power plant with the engine you need, you must decide how intensively you will use it. If it is around 500 operating hours per year, you can choose a power plant with a shaft speed of 3000 rpm. If the number of engine hours per year will be much higher, you should opt for a diesel generator with a frequency of 1500 rpm. Although they are more expensive for the same power, they have a longer service life and lower noise levels. You also need to know that it is harmful for a diesel generator engine to run at idle speed and at low loads. Therefore, if such an operating mode is present, you need, in order to avoid undesirable consequences, as a preventative measure, run the diesel power plant for no more than 2 hours at 100% load every 100 engine hours. You should also know the characteristic signs of engine overload - overheating, soot, reduced power, interruptions in operation.

The need for automation.

Depending on the purpose of your diesel power plant and the presence or absence of maintenance personnel, it is necessary to determine the control and monitoring mode of the diesel generator. If the constant presence of maintenance personnel is ensured, the power plant operates in manual mode. This power plant is the easiest to operate and has basic control and monitoring functions. If necessary, the manual mode can be provided by the function of limited control and monitoring from a certain distance or even by the function of full monitoring at an unlimited distance using a computer. If your power plant is a backup power source and there are no maintenance personnel, it should operate in automatic mode. The automation of such a power plant provides control of the supply network, protection of pantographs from voltage exceeding the established standards, as well as programmable start-up of the power plant if the mains voltage is absent or has gone beyond acceptable limits. In addition, it stops the diesel generator when quality mains power is restored and connects the load to it, tests the generator during checks, provides programming of various operating parameters of the diesel generator, indication of electrical network parameters, operating modes and emergency situations. If necessary, the automatic operation mode of the diesel power plant can be supplemented with computer remote monitoring. The automation system makes your power plant more expensive, but can satisfy the most stringent requirements for power supply reliability.

terms of Use

Your next criterion when choosing a power plant is the conditions in which it will be operated. Depending on them, you will need to select the desired version and installation method of the diesel generator. If you have a separate room equipped with ventilation, fuel pumping, heating, exhaust gas removal, fire safety and alarm systems, an open diesel generator set mounted on a steel frame is suitable for you. If you have problems with a separate room and placement of the power plant, limited time for installation and dismantling, unfavorable climatic conditions, then your best option is a containerized diesel power plant. It is a container that provides thermal and noise insulation, protection from adverse factors, into which the diesel generator set and power plant operating systems are built. If it is enough for you to protect the diesel generator from the effects of low temperature, precipitation and provide good noise insulation, then you will be satisfied with an intermediate option - a diesel power plant in a noise-proof casing. The casing is a rigid metal structure, lined with sound-absorbing material on the inside, and equipped with an exhaust gas exhaust system, doors and openings for convenient maintenance and ventilation. If you need a mobile power plant, then you need to choose a trailer-type diesel power plant (mobile diesel power plant), which is a diesel generator set, installed and secured to the chassis in accordance with all the rules and regulations.

Duration of operation of the power plant

Based on your needs for the duration of continuous operation of a diesel generator, you should pay attention to the volume of the fuel supply tank, the possibility of installing a larger capacity fuel tank or additional tanks, the possibility of automated supply of fuel and oil through fuel lines from storage tanks.

Uninterrupted power supply

If you decide buy a diesel generator for use as a backup power source for especially critical electrical receivers (electrical receivers of the 1st category), it must be remembered that, in this case, a short-term interruption in the power supply, due to some time of automatic switching on of the reserve, may not be acceptable. Then, you need to use a diesel power plant in conjunction with an uninterruptible power supply UPS/UPS.

Provider

Your final choice is who buy a diesel power station and what manufacturer. Make it in favor of a manufacturer with a proven reputation over the years and a supplier who will provide competent advice and assistance in choosing the optimal technical and financial solution. STEN is just such a supplier.

And Series AD. But before we move on to considering these manufacturers, let's talk about general provisions - what you need to know to make the right choice of a diesel generator.

Main or backup generator

Initially, you need to decide why you are purchasing a diesel generator - for continuous operation as the main source or as a backup source for use in individual cases. An autonomous source is needed when there are no other sources of power supply and the issue of power supply can only be solved with the help of a diesel power plant. If you already have another main source of electrical energy, but you are afraid of constant interruptions and supply cuts, then you should buy a diesel generator as a backup source.

What is the operating location of the diesel power plant?

If you use a generator set as an autonomous power source, then in most cases it should be designed for operation in the open air under all available seasonal temperature differences. Therefore, in such situations it is necessary to opt for stationary diesel generators. The only exceptions are cases when the consumer provides a permanent installation location for the diesel generator. In these cases, the diesel power plant is installed in special heated and ventilated rooms.

When using equipment as a backup source, operation of a diesel generator is possible only at the required room temperature, or in a special weatherproof casing. This is explained by the fact that the network redundancy function always provides for the fastest possible acceptance of the load in the event of a main source disconnection, which would be impossible to achieve when placing equipment unprotected by a casing in an open area. In this case, the diesel engine is constantly in a heated state.

What power generator should I choose?

One of the most important points when choosing a diesel generator is the choice of device power, since the cost of a diesel generator directly depends on its power. It is important to understand that if the power of the diesel generator is selected close to the total power of all connected electrical receivers, then in the future, as their number increases, the installation will be overloaded, which will negatively affect the operation of the diesel generator.

Experts also recommend that a diesel power plant never operate for a long time at a load of less than 25 percent of its rated power. And the optimal load of a diesel generator is considered to be 35-75%. In addition, climatic factors can also affect the power of a diesel generator: the higher the ambient humidity and temperature and the higher the power plant is installed above sea level, the lower the level of output power of the generator.

Single-phase or three-phase diesel generator?

Diesel generators can produce both single-phase and three-phase voltage. In household networks, single-phase loads usually dominate, since the power of electrical receivers is relatively small and there are almost no motor loads. required, as a rule, for industrial loads. It is important to remember that on diesel generators with a three-phase output voltage of 400 volts, you can always get a single-phase voltage of 230 volts.

What types of loads?

In searching for an answer to the question: “Which diesel generator to choose?”, one should also take into account the types of loads that depend on the electrical receivers for which the generator will generate electricity. Domestic load in residential premises and work offices, as a rule, is mainly lighting. Industrial load in most cases is power with a predominance of the active component (electric furnaces) or inductive (motor load). Thyristor load usually occurs where there is a need to convert the input AC voltage into a rectified one or to convert an AC voltage of industrial frequency into an AC voltage of a different frequency. These are objects such as communication centers or oil drilling rigs.

Synchronous or asynchronous diesel generators?

Synchronous diesel generators are structurally more complex than their asynchronous counterparts. The rotor speed in diesel installations with asynchronous engines is not constant and varies depending on the operating mode. Thanks to this, asynchronous diesel generators are more resistant to wiring shorts and have a high level of protection from water and dirt when compared with diesel generators with a synchronous engine. In turn, synchronous generators withstand starting overloads much easier and at the same time produce, so to speak, a “cleaner” current.

What is the continuous operation time without refueling?

This parameter is determined by the fuel consumption and fuel tank volume of a specific diesel generator model. If you have decided to buy a generator, then you definitely need to pay attention to this point. When comparing these characteristics of different models, it is necessary that they be brought to a “common denominator” - power consumption. The thing is that the consumption at 1/2, 1/1, 3/4 of the rated power can differ significantly. For large diesel power plants, the usual solution is to operate from an external fuel tank.

What cooling system?

Naturally, all diesel generators require a cooling system. Generators can be purchased with air, water and oil cooling.
A water-cooled diesel generator is structurally much more complex than power plants equipped with an air system. As a rule, more powerful diesel generators are equipped with a water cooling system. Oil-cooled diesel generators are considered more reliable and wear-resistant. Which diesel generator to choose? What can we recommend and offer you?

Diesel power plants of the AD, DGU, DES series

Let's start with the fact that our company Genmotors Plant is developing new models of diesel generators AD, DGU, DES, which are powerful Russian-made diesel power plants. Diesel generators of the AD, DGU, DES series are designed to provide the consumer with three-phase alternating current with a voltage of 400 Volts and a frequency of 50 Hertz. The power of the produced models ranges from 10 to 500 kW. They are equipped with reliable and economical motors YaMZ and MMZ of the Yaroslavl, Tutaevsky and Minsk Motor Plants, respectively, motors from John Deere, Volvo Penta, Deutz, MTU, as well as synchronous generators Stamford, Marathon Electric, Engga, Leroy Somer. Diesel power plants AD, DGU, DES are used both as backup and as the main sources of power supply. It is important to note that all equipment undergoes at least a two-hour run-in on a stand at a load of at least 25% of the rated load. Buying a generator of the AD, DGU, DES series means saving money, since the cost of these models is noticeably lower than their imported counterparts, and accordingly, the quality of Russian-made diesel generators is inferior to foreign manufacturers.

Diesel generators AKSA

AKSA diesel power plants produced in Turkey are generally supplied in capacities of 8-1760 kW. The main advantages are a 3-level cooling system, components of the highest quality, strict control of each AKSA power plant for compliance with the declared characteristics, a protection system against falling oil levels, a built-in voltage regulator, reduced fuel consumption, increased engine life, modern protection and control systems, equipment adaptability for the use of Russian-made fuels and lubricants, reduced fuel consumption, low operating costs, improved load-carrying characteristics, high build quality and quality of materials used. Therefore, they are more durable and reliable.

The standard package already includes an electric coolant heater and a charger for automatic battery recharging. AKSA premium diesel generators are certified according to all international quality standards. Looking at such an abundance of advantages, you ask: - “what is the cost of AKSA diesel generators”? And here we will pleasantly surprise and delight you. The cost is lower than Russian analogues. This is “know-how” in the field of small-scale energy. The plant "GENMOTORS" is an official independent distributor in Russia and carries out direct supplies of AKSA, so you buy power plants without intermediaries, at the best price in Russia.

Cummins diesel generators

GENMOTORS PLANT is engaged in the design and construction of turnkey diesel power plants based on generators from the British manufacturer Cummins, the power of which ranges from 8 kW to 50 MW.

Cummins diesel power plants with a capacity from 7 kW to 2.6 MW are the most popular power equipment of this company. The generators have been repeatedly awarded for reliability and quality for their fuel versatility and stable operation. Cummins generators are used to create backup power supply installations, to complete power plants for peak loads, to provide electricity to emergency systems, as well as to supply electricity to large facilities in autonomous conditions when they are remote from centralized power grids. It is worth emphasizing that Cummins diesel power plants can start and take on the required load in less than ten seconds, and at the same time reach the design power in one step.

Generators CATERPILLAR

American CATERPILLAR diesel generators are actively used by various construction companies for autonomous power supply to special equipment on construction sites. Despite the fact that they are most often used in construction, generators can be used as the main or backup source of power supply at other sites. CATERPILLAR diesel generators are economical, practical and capable of providing the most convenient working conditions.

FG Wilson diesel power plants

British diesel generators from FG Wilson are distinguished by their high level of quality and ease of operation. Every year the company produces about 50,000 diesel power plants, which indicates the global popularity of diesel generators. A quality control system has been introduced at all company enterprises, which confirms the certificate of product compliance with ISO 9001 standards. Please note that all supplied diesel generators are equipped with Perkins engines with a liquid cooling system.

Diesel generators SDMO

SDMO is a large French manufacturer of generators. SDMO diesel generators are of high quality, they are reliable, high quality and are very popular not only in Russia and France, but throughout the world. The most common models are generators from 1 to 15 kVA. Typically, SDMO diesel generators are purchased for power supply to houses and cottages, as well as for construction sites. If you are interested in powerful diesel generators, then you will probably be interested in SDMO diesel power plants up to 11,000 kVA, with which you can supply even entire cities with electric energy.

Diesel generators IVECO Motors

Buying IVECO diesel power plants is a smart and rational decision, since the equipment of this Italian manufacturer is characterized by low maintenance costs, long engine life and significant fuel savings. Powerful diesel generators from IVECO Motors will be an excellent purchase, which will simply cope with the necessary electrical supply tasks with a bang for many years.

On the world market, IVECO diesel power plants are today presented under the FPT brand - a new unified name. IVECO diesel generators meet all international standards of environmental safety, reliability and durability. FPT equipment is distinguished by its low noise level and the need for first maintenance only after 600 hours of continuous operation of the generator, which is an important advantage of diesel power plants.

Updated: 09/11/2018 12:14:36

Expert: David Weinberg

*Review of the best sites according to the editors. About the selection criteria. This material is subjective in nature, does not constitute advertising and does not serve as a purchase guide. Before purchasing, consultation with a specialist is required.

Not all regions of our country can boast of having a stable electrical network. Therefore, homeowners and managers of small businesses purchase diesel generators, which allow them to establish a reliable and uninterrupted power supply. Recently, stations of this type have been winning the market from gasoline models. This is explained by the fact that manufacturers managed to eliminate some of the weak points of diesel engines. The domestic market offers a wide range of generators that run on diesel fuel. Expert recommendations will help you choose the most suitable option.

Criteria for choosing a diesel generator

1. Purpose and power. The main selection criterion is the purpose of the generator. If you need to generate electricity in a country house or in a workshop, then low-power units are suitable. They will not take up much space, and their cost is affordable for all categories of citizens. If a generator is purchased for a large cottage where there are heating devices, then you should opt for more powerful models.
2. Power plants that produce three-phase current are used in auto repair shops or small production workshops. Not all rooms are heated, so easy starting of a diesel engine in severe frost is important.
3. Duration of work. An important parameter in a diesel generator will be the battery life. It is best when the unit runs for 8-10 hours on one fill. This time is enough for both sleep and a full work shift.
4. Noise level. To prevent the operation of a diesel generator from becoming a headache, you should pay attention to the noise level.

Our experts have selected the 12 best diesel generators. When compiling the rating, reviews of domestic users were taken into account.

Which is better, a diesel or gasoline generator?

Rating of the best diesel generators

Nomination	place	Name of product	price
The best diesel generators up to 3 kW	1		RUB 32,500
	2		RUB 29,870
	3		RUB 32,800
The best diesel generators up to 6 kW	1		RUB 60,434
	2		RUB 38,590
	3		48,999 RUR
The best diesel generators up to 10 kW	1		RUB 119,990
	2		147,500 RUR
	3		62,360 RUR
The most powerful diesel generators	1		RUB 402,320
	2		460 200 ₽
	3		RUB 222,430

The best diesel generators up to 3 kW

To provide country houses, garages or workshops with electricity, diesel generators with a power of up to 3 kW are required. Low-power equipment makes a little noise, it is easy to rearrange it if necessary. The following models attracted the attention of experts.

The DDE DDG3300E diesel generator is capable of providing electricity to a small country house or cottage. Distinctive features of the model are high power (3 kW) and electric engine start. Not only the owner of the house, but also women and children can turn on the generator. The capabilities of the power plant are naturally limited, but the equipment can simultaneously maintain the functionality of the refrigerator, TV and computer. Experts note that the model is economical; at a load of 75%, the engine consumes 1.1 liters of diesel fuel per hour. With a tank volume of 11.5 liters, the generator will power the house for about 10 hours without refueling. When operating at maximum power, the autonomy will be 8.2 hours.

User reviews praise the unit for its ease of operation and reliability. The device deservedly takes first place in the ranking.

Advantages

• high power;
• economical diesel fuel consumption;
• easy start;
• long battery life.

Flaws

• not detected.

The diesel generator Fubag DS 3600 is only slightly inferior to the rating leader in power. The power plant produces 2.7 kW of energy, which is enough in case of an emergency shutdown of a summer house or workshop. You will have to start the diesel engine manually, which is unlikely to please women. You can simultaneously connect two electrical appliances with a voltage of 220 V and one consumer of 12 V current to the generator. But the model compares favorably with its price and low weight (70 kg). As for diesel fuel consumption, at part load (75%) the engine can consume 1.4 l/h. The fuel tank capacity is 12.5 liters. The model is equipped with a protective shutdown system when the oil level drops.

Users note the generator’s reasonable price, battery life, and low noise level (80 dB).

Advantages

• acceptable price;
• economical consumption of diesel fuel;
• light weight;
• low noise level.

Flaws

• manual engine start.

The CHAMPION DW180E diesel generator is seriously inferior to the rating leaders in power (2 kW). At the same time, the unit is sold at a fairly high price. But users are actively interested in its technical characteristics. The reason for its popularity is the ability to use the generator as a welding machine. The multifunctional unit weighs more (95 kg), so it is equipped with wheels for moving. You can connect two 220 V consumers to the power plant. Diesel consumption is at the same level as that of the leaders (1.4 l/h).

Generator owners note the multifunctionality of the equipment, low noise level during operation, and efficiency. But the model is not suitable for providing homes with electricity due to its modest power.

Advantages

• multifunctionality;
• economical fuel consumption;
• wheels for moving.

Flaws

• low power;
• high price.

The best diesel generators up to 6 kW

To maintain the viability of a retail outlet or private home during a power outage, a diesel generator with a power of up to 6 kW is suitable. The unit can produce not only single-phase, but also three-phase current. Experts noted several high-quality devices.

The Korean power plant Hyundai DHY-6000 LE-3 has a good set of technical characteristics. The active power is 4.5 kW, which is enough to generate both single-phase and three-phase current. The third socket in the unit is designed for devices with a voltage of 12 V. The heavy diesel generator is easily moved thanks to pneumatic wheels. You can start the engine either manually or using a starter. One of the important options in the model is fuel heating, which is especially important when operating a diesel engine in frosty weather. Even after leaving the station in 20-degree frost all night, the equipment will start without any problems.

Experts gave first place to the generator for stable operation, the presence of three sockets with different voltages, efficiency and compactness.

Advantages

• reliable engine;
• low fuel consumption;
• easy start in any weather;
• compact sizes.

Flaws

• not detected.

A large number of devices or tools can be connected to the DENZEL DD5800E diesel generator. The model compares favorably with its competitors due to its low price. At the same time, it is not inferior to the rating winner in active power (4.5 kW). The power plant only produces single-phase current. You can connect 3 220 V devices and one 12 V consumer to the generator. The model is somewhat inferior to the leader in terms of noise (85 dB). Experts consider the strengths of the unit to be light weight (76 kg), the presence of handles and wheels for movement.

Users liked the power plant due to its economical consumption of diesel fuel (1.2 l/h). Given the tank volume (12.5 liters), the generator will generate electricity all night without refueling. The only drawback is the lack of three-phase current.

Advantages

• low price;
• ease of movement;
• high power;
• manual and electric start.

Flaws

• does not produce three-phase current.

Many positive reviews can be read on thematic forums regarding the Wester GND 4800D diesel generator. The device is capable of providing single-phase electricity to a small house or shopping pavilion, with a total device power of no more than 4.2 kW. Experts liked the model for its long battery life (11 hours), stylish design, electric and manual engine start. The manufacturer has equipped its product with an hour meter and a soundproof casing. But the weight of the diesel generator is much higher than that of its competitors (170 kg).

The owners of the power plant speak flatteringly about the reliability and stability of the unit. The long autonomous operating interval is also pleasing. Only the heavy weight and lack of power electricity somewhat upsets users.

Advantages

• long battery life;
• easy start;
• efficiency.

Flaws

• heavy weight;
• there is no three-phase energy.

The best diesel generators up to 10 kW

Power plants with a capacity of up to 10 kW make it possible not only to provide energy to a home, but also to successfully operate at a production site remote from civilization. Therefore, many models have sockets for both 220 V and 380 V. In this category, experts identified the following models.

The Daewoo Power Products DDAE 10000DSE-3 diesel generator has a whole bunch of advantages. The model is equipped with a durable diesel engine that can operate for at least 2 thousand hours. Using a conventional selector, you can select a phase of 220 or 380 V. The engine power is enough to generate high-quality electricity. The total power of connected devices should not exceed 7.2 kW. The experts' attention was drawn to the unusually low noise level (66 dB). The manufacturer managed to achieve this by installing a noise reduction system. The device has a built-in charger with which you can restore car batteries.

Owners of a diesel generator note the model’s ability to produce maximum current power in any network. Users are also pleased with the presence of a high-quality extension cord.

Advantages

• durability and reliability;
• low noise level;
• easy start.

Flaws

• not detected.

The Fubag DS 11000 A ES diesel generator is distinguished by its high power. It is suitable not only for powering a country house or cottage, but also for power supply at a production site. The model is equipped with the most spacious fuel tank (25 l), so even at maximum load (10 kW), the operating time on one fill is 5.9 hours. To remove temperature from the engine, the manufacturer equipped the equipment with a liquid cooling system. The unit is started manually or using an electric starter.

Experts gave the power plant the second line of the rating for the lack of three-phase electricity and a higher noise level than the winner.

Advantages

• high active power;
• liquid cooling system;
• spacious tank;
• two options for starting the engine.

Flaws

• high price;
• heavy weight.

Experts gave the third line of the rating to the ELITECH DES 8000 ETM diesel generator for an affordable price. The model cannot boast of high active power (6.5 kW), but at the output the consumer is offered 3 electricity options (12, 220 and 380 V). The power plant stands out due to its low weight (104 kg) and economical diesel fuel consumption (2 l/h). With a tank volume of 12.5 liters, the operating autonomy reaches 6.2 hours. The engine can be started manually or using an electric starter.

Users praise the diesel generator for its optimal combination of power and compactness, affordable price and efficiency. The disadvantages include a high noise level and modest active power.

The Fubag DS 40 DAC ES diesel power plant has the highest active power (30 kW). At the same time, effective noise insulation makes the unit operate quietly (75 dB). The model has a spacious fuel tank (92 l), and at one fill the generator can operate autonomously for up to 12 hours. Despite the large power reserve, the manufacturer has installed overload protection. Therefore, connecting electrical devices with high starting current will not cause damage to the generator. The power plant produces both single-phase and three-phase energy. The maximum current is 54 A.

Users are satisfied with the generator's power, low noise level and long battery life. The model deservedly becomes the winner of the rating.

Advantages

• high power;
• high output current;
• low noise level;
• overload protection.

Flaws

• heavy weight.

The diesel generator CHAMPION DG20000ES-3 is in high demand among domestic consumers. The popularity of the model is explained by its rich set of technical characteristics. It produces three-phase current, the active power of which reaches 20 kW. You can connect up to 3 professional tools or heating devices to the unit. The power plant consumes about 5 liters of diesel fuel per hour. With a tank volume of 50 liters, the average operating time at one gas station will be 10 hours. The engine is started using an electric starter; monitoring the operation of the generator is made easier by devices such as a voltmeter and an hour meter.

Owners of diesel generators note good noise insulation and the ability of the station to operate in automatic mode. The disadvantage of the model is the high price.

Advantages

• easy engine start;
• economical fuel consumption;
• long battery life.

Flaws

• high price.

The domestic power plant TSS AD-20S-T400-1RM11 compares favorably with its competitors by being adapted to Russian conditions. In addition, the model is sold at the most affordable price. The manufacturer carries out full pre-sale preparation with a 2-hour run-in. The diesel generator is equipped with a battery and a muffler, the engine is filled with oil and coolant. The active power of three-phase or single-phase current is 20 kW. The domestic development is somewhat inferior to its imported counterparts in terms of efficiency (5.7 l/h) and noise level (85 dB).

Users like the diesel generator for its unpretentious quality of diesel fuel, easy engine starting in cold weather and affordable price. Among the disadvantages, the engine is noisy and gluttonous.

Advantages

• low price;
• adaptability to Russian conditions;
• full pre-sale preparation.

Flaws

• noisy engine operation;
• high consumption of diesel fuel.

Attention! This rating is subjective in nature, is not an advertisement and does not serve as a purchase guide. Before purchasing, consultation with a specialist is required. A generator is a device that can become an autonomous source of energy and provide power to heating devices, lighting, etc. The capabilities of the device are well revealed during trips to nature, construction and repair work, and in emergency situations it is an absolutely irreplaceable thing.

Today, manufacturers have provided the standard buyer with a wide selection of electric generators. It’s not easy to navigate the variety of models, but knowing the basic principles, you can still do it. Here we will look at the main characteristics, without going into technical nuances and design features. The classification is carried out according to the main types: their characteristic disadvantages and advantages are considered.

8 rules for choosing a generator

1. Based on the type of fuel consumed, diesel, gasoline and gas-powered generators are distinguished. The most environmentally friendly are gas generators, but most of these models depend on the gas line, and therefore on the pressure in it. For domestic use, it is recommended to use gasoline ones, but diesel generators demonstrate maximum reliability. They are indispensable at industrial facilities, and are successfully used in residential complexes.


2. The choice of power is based on the following principle: the minimum power of the generator is the total power of all devices, plus 10%.


3. Phases. There are three-phase and single-phase generators. The former are more often used in industry, although there are exceptions.


4. Noise generated. It is recommended to install generators in separate rooms, but the model itself can be equipped with a noise-proof enclosure.


5. Traffic fumes. The gas exhaust system is an important part of the design; take an interest in this when choosing.


6. Service. Purchasing a generator also includes its installation. Find out more about the availability of spare parts in stock and the quality of service.


7. Support. All other things being equal, it is better to choose a company that has its own service center.


8. Certificates. Look for confirmation of quality not in words, but with the help of relevant documents that any reputable company has.

How to choose a generator for your dacha?

Before choosing, you need to decide exactly for what purpose you are going to use the generator. This is the point from which you need to start and build all further reasoning. First of all, the purpose of using an electric generator affects the required power indicators. For a summer residence, for example, a gasoline generator with a power of 0.6 to 3 kW is quite suitable. This power will provide energy for basic household appliances, and gasoline is ideal for occasional short-term use.

To accurately calculate the generator power, you need to determine the starting power of all electrical appliances connected to the home network. At the same time, do not forget that the rated power indicated in the device passport differs from the starting power. For most inductive devices it is slightly higher. An inductive load requires a high current strength at the beginning of operation of the device and a uniform current during operation. Starting and rated power differ between devices:

• Ohmic consumers (electric stoves, incandescent lamps, soldering irons, toasters, irons). In such devices, the rated current is equal to the starting current.


• Consumers with low inductance (hand drills and saws, jigsaws - all electric tools; household appliances: fluorescent lamps, refrigerators, TVs, computers, etc.). Their rated current is less than the starting current 1.5 2 times.


• Devices with high inductance (any devices with powerful motors that use electricity: transformers, compressors, well pumps, welding machines). In such devices, the difference between the starting current and the rated current is inevitable by several times. For example, for a welding machine it is 300-500%, and for an average power pump it will be 500-700%.

If your system of electrical appliances does not have units running on powerful motors, then you can simplify the calculation by adding a margin of approximately 50-100% to the total rated power. Of course, your generator will not need to produce this much power all the time - this is the peak load when connecting several devices at the same time.

Some manufacturers indicate power not in the usual kW, but in kVA. The correlation of this value to the usual figures is made by multiplying by 0.8. Thus 10 kVA will equal 8 kW.

How to choose a generator by manufacturer?

Competition between manufacturers has led to the fact that currently the buyer has a huge selection of generators running on any type of fuel, including gasoline. Which brand should you choose? The determining factor here is the standard rules of the market: the ratio of quality and price, service and reputation of the manufacturer.

You need to start by finding information about what brands of gasoline generators are serviced in your area. Chat with the service center of the company from which you want to make a purchase, with the employees of the repair centers. Such employees will always have information that will help you decide on the choice of company. Reviews and discussions on special forums are no less useful.

Don’t be surprised if by choosing products from a well-known brand, you will receive an appropriate price for the device itself and its service. The quality offered by most trusted manufacturers meets high demands, but this is not always reflected correctly in the price. Companies such as Gesan, Elemax, Champion, Endress, Honda, GM, SDMO have good reviews.

If you are looking for the ideal balance of performance characteristics and cost, then the best solution would be to turn to Russian companies that are closer to the needs of domestic consumers. The Russian company VEPR assembles its products from imported parts, and its products have a good price balance.

As in other market segments, low prices are offered by manufacturers from China. Not all brands from this country have good recommendations, but Kipor can be singled out, although its products differ in price from the rest of the “Chinese” range by almost two times.

The author of this article conducted a comparative analysis on the official websites of famous brands, specialized forums and chose for himself a Defort DGI-1000 inverter-type gasoline generator. As the name suggests, the power of this device is 1 kW.

The cost of the Defort DGI-1000 is around 5,600 rubles, and for this price you can get compactness (the weight of the device is only 12 kg) and neat assembly.

The company SBM Group from Germany is listed as the supplier of the generator - this international group was registered in 2007, and its main activity is the development of automatic networks, stations, devices, the sale of power tools, spare parts and consumables for them, etc. The country of manufacture was not indicated, but the assumption that the device was produced in China seems logical.
The main argument in favor of purchasing the unit was the excellent warranty period - 5 years.

Which generator to choose for your home?

Constant power outages are not uncommon in our country, and this problem becomes the starting point for choosing and purchasing a generator. The need to have such a device is even more urgent for owners of private houses and summer cottages. The quality of energy supply through central communications will not improve soon, so you need to be prepared in case of emergency outages, even if interruptions are planned only in theory.

As soon as you have data on fuel consumption, the desire to reduce the power of the unit will become even stronger. In most cases, the cost of 1 kW of energy obtained using household generators seriously exceeds the price dictated by the state.

The minimum set of devices in case of an emergency is lighting (2/3 of the lamp power is taken into account), a refrigerator and a TV. Let's consider a computer's uninterruptible power supply to be a sufficient condition for comfort.

After solving the power problem, you need to move on to choosing an engine. They are classified according to the fuel consumed and the operating cycle (four-stroke and two-stroke). When choosing, they are most often guided by the level of noise generated, the possibility of using fuel for other household needs (gas, gasoline, diesel fuel), and the expected duration of continuous use of the generator. Availability of fuel also plays an important role.

Gasoline-powered generators are best suited for emergency situations. Such stations, with a power of up to 5 kW, are capable of providing electricity to a basic set of household appliances. The noise created by gasoline generators is minimal, which distinguishes them favorably from gas generators with forced ventilation. Most models have a casing that protects against sound. True, using a casing is not always beneficial, since it significantly reduces ventilation and interferes with the cooling of the unit. This affects business continuity.

If your home has gas reserves (propane-butane cylinders), then you can organize a system powered by a gas generator drive. Liquefied gas is the fuel available today and this option can be quite effective. Gas prices vary, but are generally lower than the cost of gasoline, and in terms of noise levels, such generators are not very different from each other. For a few hours in an emergency, these generators can easily supply your home with energy.

The period of use covered by the manufacturer's warranty depends on the cylinder block options. For example, a block made of aluminum can work for 1000 hours, and a block made of cast iron can work 3-4 times longer. Guarantees are based on these numbers.

If a generator is chosen as the main source of energy, a different approach will be required, and the emphasis will have to be placed on other details. Since the power of such a generator will be significantly higher than the power of an emergency generator, and it will work constantly, a unit running on diesel fuel seems to be the ideal option. Such a generator must have its own cooling system. Diesel generators have such elements, and their service life and reliability are an order of magnitude higher than gas and gasoline ones.

Which generator to choose for welding?

For a welding generator, an important factor is the type of fuel. It is always diesel fuel or gasoline. There is also a difference in the type of current received - direct or alternating. Gasoline-powered welding machines with alternating current welding are the most favorable price solution. In addition to being cheap, they have the advantage of being compact. The problem is that the resource of such units is small. For serious, continuous loads, it is better to choose diesel generators.

The type of current generated by the machine directly affects the quality of the weld. The best quality is provided by direct current, and the generators that provide it are much more complex than their counterparts with alternating current. However, the quality of the weld is much higher. The welder decides on his own which machine configuration and manufacturer’s brand to choose.

Now you have all the necessary information to select an electric generator, and you are not afraid of making mistakes when choosing.