A modern country house is equipped with many complex systems to ensure its normal functioning, - heating, water, air-conditioning, video surveillance, etc., a power failure may have been a disaster. To solve this problem allows backup system (autonomous) power supply. The choice of the generator of the electric plant - not an easy job. If you decide to build a vacation home, then take care of his reserve power supply must be already in the design phase, which will choose the best accommodation option to install and incorporate it into the overall electrical circuit house. Nowadays in Russia works a sufficient number of professional companies engaged in a complex solution to the problem of power supply. It will help you with the choice of a particular model, and options configuration, and maintenance. However, before contacting a company, should make for a preliminary idea about the required electric plants. The first thing to do is to calculate the total power of redundant electrical equipment, it will depend on the capacity necessary for you generator. Total power is composed of several electrical devices are not purely arithmetically, while taking into account the inductance of some of them. Inductive type devices at the time of launch requires several times more electricity than during the work. This and refrigerators, and pumps and many other appliances that are included in the list of "customers first category. If several such devices are included simultaneously, the power consumption increases dramatically. In addition, should take into account the difference between the maximum and rated power generator. Wise to not use it "to the fullest" and thus increase the service life. An important feature of electric machines "cottage power (from 5 to 15 kW) is that overseas they are used less, because there are fewer problems with power failures. Therefore, some models are entering the Russian market, simply does not meet our conditions of use. It should also be borne in mind that in most cases, the production of the generators themselves are engaged in electrical engineering companies and motor to them purchased from machinists. "Docking" is far from all producers. Finally, overseas no practice automation gasoline engines, and some domestic engines because of their qualities and not be automated. The two main components of the generating set (which is why she, in fact, called aggregate) - the engine and alternator. The engine is often called the "heart" of an electric generator. It is he who determines the lifespan of the unit, since the mean time between failure of the alternator is much higher than that of the motor. The problem of what to choose electric plant - petrol or diesel can not be reduced to a simple summation of various strengths and weaknesses. Of course, both he and the other types have their advantages and disadvantages. Thus, the level of fire risk (especially those working on the automation) gasoline engines is higher, but, for example, among the open motors with a speed of 3000 rpm more noisy - diesel. In any case, the choice in favor of a particular unit is primarily based on what exactly the problem it is meant to solve. As an emergency source of the short time it is quite suitable gasoline installation of small capacity. Run it will be rarely and briefly, therefore, low fuel consumption at a low price of the equipment will give significant savings. In this case, it is quite suitable plant with a gasoline engine, which pose serious producers only the most low-power and compact installation. The portable station with a capacity of up to 1 kW, usually uses a compact 2-stroke engines (MTBF - 500 hours). At a more powerful, from 2 kW - 4-stroke engines. Of these, more reliable (and therefore more expensive) - engines with overhead valves, easier (and cheaper) - nizhneklapannye without cast-iron cylinder liners. Therefore, for long, about 8 hours a day, operating the best option - 4-stroke overhead valve engine and a professional class, equipped with an automatic system shutdown at lower oil level and having a high safety margin (3-4 thousand hours). Power exceeding 10 kW, the diesel has been used for the installation, when choosing where to draw attention to the following points: - cooling: a) air and b) liquid - the number of cylinders: a) 1-2 b) 3-4 - Number Speed: a) 3000 rpm b) 1500 rpm. According to experts, the best option - if each of these cases, the choice is made in favor of b. Alternator (generator) produces an electric current. Depending on the type of plant copes better with certain tasks. Synchronous and asynchronous alternators differ in their abilities. The views of experts in their estimates of expenditures. "Medium" option is as follows: synchronous alternators are easier to carry starter overload and produce a "clean" current, asynchronous more resistant to short-circuit and in the simplicity of design have a higher degree of protection. However, currently there are many ways to improve the output parameters of the plant. In particular, asinhronnik equipped with a starter amp, capable to cope with congestion launchers, and quality issued by the electricity can be increased by connecting an automatic voltage regulator. Despite the fact that most manufacturers are fighting for the reduction of noise and toxic emissions that are unavoidable when working unit with those of its features you will also have to be considered. If you decide to install an electric generator indoors, you should first take into account the requirements it must meet. Keep in mind that reluctance to provide balanced ventilation and exhaust system - one of the main reasons due to which a firm can take off any warranties. Different firms, depending on the features of the equipment, these requirements can vary significantly, but in general they are as follows. The room must be heated and ventilated to ensure that the air temperature not below +5 ° C and humidity below 85%. Maximum permissible temperature - no higher than +38 ° C. Performance of ventilation during operation of the electric plant should provide relief from the heat calculation of 700 watts for every 1000 watts of electricity developed. If you are installing automated equipment include ventilation should also be carried out automatically. A properly designed system meets the following requirements: - the engine exhaust is directed outward so that the engine does not appear excessive back pressure - the elements of the system, located inside the generator, insulated - in-line release included an appropriate silencer (he used to reduce to an acceptable level of noise produced by pulsating engine exhaust, and is chosen depending on the degree of noise reduction required to meet the conditions of the installation). Calculation of a specialist in the last paragraph is particularly important because there are a number of rules concerning, for example, the diameter and length of hose. Above a certain length or too small diameter of the engine can not pump the gas to exhaust system and "choke". Some firms do not place electrical aggregates in the basements of apartment buildings. The view is: no matter how hard to install them, will still be noise and vibration. At least stroke of bass that you can not even hear it. Other experts are looking at the problem differently. They believe that their units vibration issue resolved well enough: the equipment is fitted with vibration isolation pads and installed it only on the foundation, divorced from the floor. As for noise, there are various options for its killing, ranging from the placement of soundproofing inside the body, ending with the installation of additional mufflers that reduce noise, in addition to the standard, even at 25-40 decibels. The walls of the room, if desired, can be treated with soundproof material. Typically, placement of the electric plant in the premises, for example, in the basement, eliminates the problem of heating equipment. But installing equipment on the street, it can be solved with the bonnet (shell) or container. For different models feature various types of hoods. Exist, such as hoods, which, like containers, have a life-support system, which includes ventilation, exhaust system, heater motor, fire-extinguishing system, sound insulation, etc. In addition to the container can enter and carry out necessary maintenance and repair of and put a certain amount of fuel. All technical solutions in the selection, configuration and installation of electric generators are strictly individual, so there are quite a number of additional options: - automatic start / stop the generator - the control parameters of its work on the liquid crystal display and a remote computer - the increased fuel tanks (1000 l ) and the system automatically swap out the external fuel tank - automatic blinds supply and exhaust ventilation, etc. A professional company will help customers choose the most appropriate unit and auxiliary equipment, will provide (subject to conditions) after-sales service. One of the criteria for selecting such a company is the amount of guarantees and documents certified by the commitments that it can offer its customers. Agree, it's silly to try to save money on their comfort and independence.
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