How to choose a generator, recommendations for choosing an electric generator

Almost all owners of gardens, cottages, country houses and small construction companies dream of being independent from the power supply and have its own self-contained power source.Currently, these dreams can be easily achieved by buying an electric generator, and to date range of the proposed models is so wide that the ignorant man sometimes very difficult to navigate in this mnogoobrazii.Uchityvaya urgency of the issue of choice, this article will review the basic principles that should be followed beforehow to choose an electric generator for the home, garden, work.

generator as an alternative source of electricity

autonomous energy sources, small power generators, equally popular among both repair, construction crews, because the owners of private farms.However, to consider them as an alternative to the main energy sources should not be because of the high cost of 1 kWh of electricity, but overestimate their role as emergency power sources is impossible.The main parameters of the equipment are the power and resource generators.

power generators

Almost all users in their choice in the first place pay attention to the power of the generator, and it does not take into account a number of technical characteristics affecting the operation of the generator.Immediately note that manufacturers specify the maximum power at which the oscillator can operate for a short time.Get introduced to work, the main power value can be, found in the documentation of equipment, such as the parameter cos φ.Knowing the value of cos φ can calculate the value of labor power generator.For example, a value of cos φ 0.8 and power 5 kVA value of labor power will be equal to:

5 * 0.8 = 4 kW

where KW - total capacity of the unit (active and reactive),

KW - kilowatts, active power unit

parameter cos φ indicate European manufacturers.Japanese manufacturers believe that the generator can operate at their capacity limit of not more than 1.5% of the total working time.For this reason, the value of Japanese origin generators may differ significantly from the European equipment.

As an example, consider the 2 generator - brand generator Makita EG 410 C value of 28 thousand p..generator Glendale GP4000L-GEE $ 30 thousand. p.Specifications of both generators are almost identical: two single-phase generator and the generator are both equipped with a 4-stroke single-cylinder gasoline engine, air-cooled.The difference appears in the fuel tank capacity and cost.The capacity of the first generator is 5.6 liters, and fuel tank capacity of the generator brands Glendale 25 liters.However, a careful introduction to the technical data cause some doubts.

Makita Company delivers products in this market segment for many years and enjoys a reputation for reliable and high quality equipment.The product documentation given 2 options: the maximum power of 4.1 kW and a rated power of 3.5 kW.It is easy to determine that the power factor in this case is 0.85.

documentation generator Glendale second grade is not specified power rating of the product and the declared capacity of 3.8 kVA / kW is not true, the value of which does not exceed 3.2 kW.However, the manufacturer brings to the respect that it does not have the stated power as nominal.

It is logical appearance of the reader's understanding of the need in such technical details.The answer is very simple.Such technical details necessary for a proper choice of the product.Some future users ignorant in these subtleties naively believe that the power of the generator must be equivalent power the connected equipment that is not true.high power generators were considered sufficient for the visibility of the problem.Let us now consider more how to choose the right generator.

How to choose an electric generator for the house right?

How to choose wisely generator for home use?It is logical to calculate the total load on the generator, and in its choice of focus on it.But not all so simple.

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In their calculations must take into account the type of load itself, which is divided into active and inductive loads.For active consumers of electricity are light bulbs, electric ovens, heaters without fans, kettles.power calculation for these appliances is a simple calculation of the total power.In practice, in most cases to provide several light bulbs of 100 watt heater or an electric furnace is enough generator capacity of 3 kW.However, a small power generator is not able to provide sufficient energy to the vacuum cleaner or electric drill.

The problem is that some appliances equipped with electric motors, require consideration of some amendments on power.For the cleaner the value of correction factor is 1.25.Therefore, for normal operation of the vacuum cleaner power 1.8 kW with a correction of 1.25 necessary power of 2.25 kW, but taking into account of the generator factor, the value of the required power amount to 2.8 kW.Thus, the brand Glendale GP4000L-GEE generator to provide energy cleaner and more active consumers of electricity.

Below are the value correction factor for certain types of household appliances and construction equipment:

• Electric drill power 1.2 kW 0.75;
• Woodworking Machine power 2.3 kW 1.3;
• pump (water) capacity of 0.85 kW 1.25;
• Mixer power 0.9 kW 3.5;
• Fridge capacity 0.5 kW 3.2

above discussion illustrates the need for a certain amount of technical knowledge to choose the right generator.It recommended if the seller not knowing the parameters discussed above to purchase the product elsewhere.

design electric

design various models of generators is almost the same.Design models includes a base, to which by means of rubber shock absorbers mounted engine and generator.Generators equipped with petrol or diesel or power plants.The novelty of recent years are the generators running on gas.It is recommended when choosing to focus on power plants manufactured by Briggs & amp; Stratton, Honda, Yamaha and Subaru, and engines with overhead valves is preferable.

Propulsion overhead valves require a longer lifetime, as this type of engine has a greater service life.When choosing a model, it is desirable to pay attention to the equipment of the generator starting amplifier, which smooths out load while connected consumer high voltage electric power.Manufacturers also offer generators with automatic switching option fail household power grid.A significant disadvantage of this type of generators is their high cost.However, disadvantages of this type of generator is not limited.To install them you must perform a series of technical measures, for example, select a generator separate utility room or enclosure to protect the safety cover when installed outdoors.An example of this type of generator is the generator of the brand Endress ESE 1206 DHS / A-GT ES ISO value of 183 thousand. Rubles.It is also necessary to remind future users that all internal combustion engines require regular maintenance for qualified service.

Manufacturers generators

known to enjoy the reputation of major manufacturers of generators, not so much as technological generators production process is quite complicated and time-consuming.This statement should serve as a warning to future buyers.In the present in this market segment are products from various manufacturers, and are almost always argued that the models are equipped with power units known brands.Note that even when equipped with products known manufacturer of the engine, it does not is a testament to what is offered is really quality product, because almost nothing is known about its operational resources.Sellers in the market, touting their wares, argue that almost freely sell the products of famous European and Japanese manufacturers.I responsibly claim that all the proposed models have cheap Chinese origin, and in passports of products listed small addresses of European companies.As mentioned above, the real major manufacturers of generators is very small and their production is quite expensive.However, quality and operational resources of the products of famous brands is fully consistent with the formula of "price-quality" by purchasing a generator, it is better to choose an electric generator that best fits the needs.

Thus, we can safely say that for the acquisition of a powerful generator capable of providing all the energy needs of a country house or cottage, you must contact the professionals who work in specialized stores selling household appliances.Only in this case, the user can be assured as in the long term operation and reliability of the model.Do not forget about safety.