Modern apartments and houses are oversaturated with electrical appliances. Their excess causes a lack and power surges. In order for all household appliances to survive after the next drop, consumers have to purchase voltage stabilizers. The market offers many products at various prices and customer needs.
Appearance
Typically, the 380V voltage regulator takes the form of a metal box on which there are terminals for connecting input and output wires. Also on the front panel can be placed devices for monitoring the voltage and current consumed by the load in the network. There are usually many holes and slots on the case to cool the inner filling, as it can give off a lot of heat under load.
Inside there is an autotransformer and an electronic unit, in pair they react to a change in the input voltage and instantly change it, which at the output gives a stable, high-quality current for powering various equipment.
What is it needed for
Many probably remember the Soviet times, when each lamp TV was connected through a buzzing heavy box. This was a 200-250 W low power stabilizer, mainly intended for television receivers. It was noteworthy that in the cities it was possible not to use them, but in the villages the 380V voltage regulator was indispensable, since the network had 180 V and the TV simply did not work. Why did this happen? The fact is that in the villages there were 1-2 substations, and the length of the lines was very long, in connection with which there was a voltage drop, and while the house was closer to the transformer, the voltage in it was higher, and in the last buildings it was critically small. Then such a necessary voltage regulator 380V 15kW rescued.
Voltage regulators now
Since time immemorial, nothing has changed. Transformers and lines basically remained the same, and equipment and technology became much more. Repeatedly it was possible to see or read in the news about the appearance of 400V houses in sockets, which led to massive damage to electrical property and non-return by the services of damage to the injured residents. This was obtained from overloading electric networks and burning the working zero. And although many devices have built-in stabilizers, they may not provide really high-quality equipment protection.
Here the 380V industrial voltage regulator specially designed for this function comes to the rescue. For a house or a modern apartment, it is necessary.
Which to choose
In a modern store, you can choose a voltage regulator 380V and 220V. It is easy to guess that for an ordinary apartment or house you need a single-phase 220V. Sometimes there are houses where there are three phases, in this case, a voltage regulator of 380V is needed. The same applies to small enterprises, firms and workshops where machine tools with engines for three phases are installed.
In order not to spoil the expensive equipment, a voltage stabilizer will also help here.
Understood the voltage, now what current to buy the device? You might think that the more the better, but you need to take into account the cost of the device: with an increase in power, the price also increases significantly. Therefore, by overpaying, you may not use half the potential of the stabilizer, but then spend a lot of money. Usually 5-10 kW is enough for a house and an apartment. This can be determined by counting all the possibly turned on appliances in the house and finding out the total power.
A voltage regulator of 380 V may be suitable for a small enterprise. If consumption is much higher, we select accordingly. Fortunately, they can be up to 80 kW and more. Each has its own, for different needs.
Particular attention should be paid to the quality of the stabilizer purchased. After all, there are a huge number of manufacturers, and choosing among them is not always easy. I would not want to spend money and get a low-quality product that, at the very first power surge, will not protect the equipment, and it will even fail. I would like to draw your attention to Resanta devices. These stabilizers have a fairly low price, but provide good stabilization quality.
Take, for example, a three-phase voltage regulator 380V "Resanta", providing the maximum allowable load current of 6 kW and a voltage of 380 V ± 2%. Mechanical switch devices make it possible to control the voltage at the input and output of the device, as well as the current consumption by the load. There is protection against overload and short circuit at the output. Also, natural cooling (without a fan) provides a low noise level, which is sometimes important when installed indoors. The metal case provides structural rigidity and protection against mechanical damage. In addition, the stabilizer itself has a fairly modern and aesthetic appearance, and a weight of 29 kg makes it possible to carry the device without much difficulty. The efficiency of the stabilizer is also indicated by the declared efficiency - 97%.
Conclusion
Of course, you can do without a stabilizer, but is it worth the risk? Having calculated the cost of a TV, a refrigerator, a computer, and other, such as business equipment, you will realize that, in which case, the costs will be much higher. And even if no big jumps happen, the 380V voltage regulator will provide a longer life for your electrical equipment.