Most often the most expensive kitchen appliance that is at all, it's a refrigerator. Many keep at home a decent supply of food, making life without refrigeration unit can not be imagined.
Quite often in the apartments after power failures. If there is no power outage, the network jumps it is not uncommon. Because of this instead of the usual higher voltage of 220V is applied, which adversely affects the state of the art.
In many devices is the function of the automatic control, but it does not always save. That technique is not broke, you need to buy a voltage regulator to the refrigerator. It will help to protect the unit from burnout for the following reasons:
Therefore in choosing models need responsibly.
Content
- 1 The choice of power
- 2 Single phase or three?
- 3 type stabilizer
- 3.1 Triac
- 3.2 Relay
- 3.3 Electromechanical
- 3.4 ferroresonance
The choice of power
If you buy a poor technique, it can break at the slightest electric shock. And with the purchase of a more powerful will have to overpay a substantial amount. voltage regulator should be chosen for a particular refrigerator.
First, find out the power of your refrigeration system. It is listed in the data sheet. If it is not, you can find a description of the specific model on the Internet.
When the power is set, it must be multiplied by 40%. This margin ensures that the stabilizer withstand even severe stress.
For example, consider a refrigerator with a capacity of 2000 W (or 2 kW). Multiply by 40% to obtain the final value of 2800 watts. You can not find it with a stabilizer such parameters, but make no mistake - a model with a capacity of 2800 to 3000 watts to cope with the task.
Single phase or three?
You need to know how to choose the voltage regulator - single-phase or three-phase.
In older homes, which held a standard single-phase network, the question does not arise - just need to buy a single-phase stabilizer.
And if the three-phase network, it may sometimes go and cheaper version of the one phase. But the refrigerator can also be three-phase. There clearly have to take the appropriate stabilizer. This is the only way to protect appliances.
type stabilizer
Today, the market can see the following groups:
- tRIAC;
- relay;
- electromechanical (servo);
- ferroresonance.
All of them have pros and cons, which need to know.
Triac
Devices of this type operate with low noise and a high switching speed. However, their efficiency is rather high - from 96 to 98%. The main drawback - a very high price. Sometimes it happens that the cost is comparable to the price of the refrigerator. Therefore, to call them can not be popular.
Relay
These models of high speed adjustment. In addition, they are cheaper and efficiency does not lead - 97-99%. From minuses - low output power, low accuracy stabilization and distortion sinusoid. But even with these drawbacks relay controls most popular.
Electromechanical
Have a high adjustment precision and lack of distortion sinusoid. Their efficiency is also high - 97-99%, and the price is not too high. But having mechanical moving parts in the design reduce the reliability of the device.
ferroresonance
They differ precision stabilization, a long service life and reliability. At the same time they take the average price niche. But significant disadvantages. Chief among them is an extremely low efficiency - from 70 to 80%, which is a serious cost overruns electricity. Therefore, such a voltage stabilizer refrigerator is hardly successful purchase.