Catering power grids will not be equal to reliability with urban, no, no, and there are accidents in them. This unpleasant situation should be prepared. It is best to get a backup power source.
Photo: shutterstock / fotodom.ru
As an alternative source of electricity to everyday life, generators with an internal combustion engine (most often diesel generators) and rechargeable batteries (AKB), equipped with an inverter - current converter (from constant to variable and vice versa). The battery is connected to the network through the inverter, with the help of it, the batteries are recharging when electricity in the network is.
Photo: "Soltet"
Uninterruptible power supply, equipped with batteries and inverter, will not take much space in the house
Both types have their advantages and disadvantages. The main minus of the generators are noise and exhaust gases produced during operation. But the diesel can theoretically function as much as possible, if only it was fuel. In any case, several days in a row he should work.
Photo: shutterstock / fotodom.ru
To install powerful UPS with rechargeable batteries, you will need a separate rack.
AKB based systems have more significant restrictions on time. Usually from several tens of minutes to several hours. For greater duration, accumulators of significant containers will be required, and, accordingly, the system will be too expensive. Judge for yourself: an inexpensive diesel generator with a 2 kW output can be bought in 25-30 thousand rubles.
A set of batteries capable of issuing 2 kW for 2-3 hours will cost approximately twice as expensive. Add to this the cost of the inverter - at least 30-40 thousand rubles. Fully assembled by the source of uninterrupted nutrition (UPS) for half an hour of work will cost a minimum of 100 thousand rubles. But use the UPS as a backup source - solid pleasure. Neither exhaust, no noise, no fuel, and switching occurs almost instantly (the generator must still be launched).
Photo: Legrand.
Modular Trimod He (Legrand) Middle Power UPS with built-in microprocessor and modular battery pack system
To accommodate batteries, a separate, well-ventilated room in which insulated racks are installed. The temperature in it should not be lower than the recommended battery manufacturers (usually 15 ° C). We will talk about the choice of type and brand of batteries, use their use and storage in a separate article.
Uninterruptible power supply system scheme
Photo: Legrand.
Compact single-phase UPS Keor S 3 KA 20 '(Legrand), power from 3 to 10 kV (from 133 thousand rubles)
All backup power sources are selected depending on the power of the plug-in. It depends on the needs of homeowners. To calculate it, you need to sum up the power of all devices that will be connected to the power source. Note that the more this amount will come out, the more expensive the UPS will be obtained, therefore it makes sense to limit the load, leaving only the most necessary - emergency lighting, nutrition of the components of the heating and water supply system (ventilation, borehole pump, etc.). Plus one or two outlets so that you can connect the TV or other household appliances.
When choosing a generator or installation of an inverter system, first of all, it is necessary to determine how often the use of an additional source of electricity is needed. So, if you are in the country only on weekends in a summer period, enough gasoline generator. It should be remembered that gasoline or diesel generators create strong noise and unpleasant odor during operation. Therefore, they need to be placed in ventilated rooms with good sound insulation. More convenient to use are inverter-battery systems, especially if you spend a lot of time at the cottage and the uninterrupted source of energy is needed constantly. Such a system, as a rule, consists of an inverter, batteries, a charger that provides battery charge, controller, monitoring the battery charge.
Ivan Hrpunov
Technical specialist of the company "Kashirsky Dvor"
