Many people ask why you need a voltage stabilizer for a washing machine? Have you ever noticed a light bulb flickering or a radio bursting in your home or office?? This is the surest sign of that, that the current state of power grids in our state leaves much to be desired. Deviations from the rated voltage of 220V have long been the norm for the energy sector. Moreover, in some cases even on the "allowed" deviation on 10-15% from the norm no one pays attention.
Probably every one of you has heard a story about it, as from a sudden voltage drop in the network in the house burned all appliances. The way out of this situation is very simple. The only solution is to purchase and install a domestic voltage equalizer in the room. Voltage stabilizer for washing machine, computer, boiler and other equipment, Of course, if it is chosen correctly, able to protect your equipment from sudden surges in the network.
Who needs a stabilizer and why
To make sure, that you really can't do without this device, it is worth making some measurements. It's very easy to do. Enough 3-4 once a day to measure the voltage in the mains using a conventional tester at 220V. This is especially recommended during rush hours - evening and morning, when the amount of energy consumed is maximum.
Advice:
If you use imported equipment for measurements, the required function is usually referred to as "True RMS".
Try to make such measurements at least for 3-5 days. This will make the most complete picture. Depending on the results obtained, further situation can develop in three ways: (See also: How to choose a machine (UZO) on the washing machine)
- If measurements show, that the voltage reading in the home mains did not exceed 205-235V, then the purchase of a stabilizer may be needed only for your personal peace of mind. The device is also worth installing, if you have particularly valuable or very sensitive to voltage fluctuations equipment in your apartment or office.
- In those cases, when fluctuations from the norm in 220 is -10% or + 7% (198-235V respectively), it is recommended to install a stabilizer for all equipment.
- If the deviation, registered online, more -15% or + 10% (187 -242V respectively), then your situation can safely be called critical. Using any devices without additional protection of the network stabilizer, you put them at 100% risk. In this case, buying a stabilizer is not a luxury for you, and a strict necessity.
Types of voltage stabilizers
If you still decide to secure your appliances, then the next step for you is the stabilizer itself. The point is, that these devices are quite different from each other. Each type has its advantages, and cons.
Exist 4 basic types of voltage stabilization devices:
- relays;
- stepped;
- electromechanical (servo-driven);
- electronic.
relays
The most "running" and the cheapest type of stabilizer technology. They have a fairly large range of input voltages, but there may be problems with the output - the accuracy of support there is quite low. Such stabilizers are most often used with minimal jumps in the network, within 10-15 V. The relay contacts burn out or even stick together over time. This situation leads to that, that the stabilizer is not working properly. After a while, or the stabilizer itself will fail, or your appliances will deteriorate.
stepped
These stabilizers are equipped with a whole system of semiconductors, which correct the distortion in stages. The reaction rate of such a device is not very high, but it is the most durable, is quite reliable and can work with any 220V electrical network. This type of stabilizers is perfect for a washing machine.
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Servo drives
Electromechanical systems are also called servo drives. Unfortunately, as the previous one, it has a fairly low reliability and a fairly small operating range. in addition, such devices often sin the wear of the servomotor. Due to the lack of components, repairs can be a problem. The only advantage of servo stabilizers is a good accuracy of the output voltage. They are able to provide good protection in the range 5-7% from face value.
electronic
The highest quality and most modern normalizers have an electronic control circuit. This gives a very high speed response to network changes, as well as exceptional accuracy. in addition, electronic stabilization devices have the widest range of input voltage, so, able to protect your equipment best.
How to choose the right stabilizer
If you are reading this article, then, probably, you have a need to buy a voltage stabilizer for a washing machine. Of course, if this home appliance is the most important and expensive appliance in the whole apartment - this is a smart move. But it is even more reasonable to protect not only the machine, but also all household appliances in the house. After all, from voltage drops can burn and boiler and air conditioning and TV.
Of course, which devices to take care of, and about which not - your business. The main thing here is not to make a mistake and choose a device with sufficient power.
Stabilizer power is the main indicator, which is worth looking at when buying. It should be enough to support the operation of all connected appliances. To find out what power stabilizer you need, will have to make some calculations:
- Determine the total number of devices, which will be connected to the mains, so, and to the stabilizer.
- Take instructions for each device, find the power consumed in them and add up the figures for all units (in kW).
- Add approximately to the obtained figure 20-25%.
- The resulting number will be the desired power stabilizer, able to ensure trouble-free operation of household appliances throughout the house.
Another parameter, which must be considered first, than to choose the device - the number of phases. If you are not sure which stabilizer for the washing machine and other appliances is right for you, pay attention to the type of power supply of your home. Most often, this information is written on the meter, installed indoors. In the vast majority of cases, the home network is single-phase. But there are exceptions. In this case, you will have to buy a three-phase stabilizer.
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Example of calculating total power
For example, let's calculate what power the stabilizer needs to be installed indoors, where they work normally:
- lighting -250 W;
- TV - 150 VT;
- washing machine (in the house wash almost constantly, there is a small child) — 2 kw;
- refrigerator (new model) — 250 W.
The calculation must be taken into account, that the refrigerator and the automatic machine at start-up consume much more power, than in stationary work. For convenience, you can use the following table:
| Refrigerator (old model) | Refrigerator (new model) | Washing machine | microwave |
| 5 | 10 | 3-4 | 2 |
This indicator is called the multiplicity factor, it can be detected by carefully examining the passport of the device.
Now multiply all the indicators by the appropriate factor and add together the results:
250x5 + 150 + 2000x3 + 250 = 7650 W or 7,65 kw
Add to this the power of those electrical appliances, which are still present in the house:
- iron - 0,8 kw;
- notebook - 100 W;
- vacuum cleaner - 1,2 kw.
Let's make the result:
7650 + 800 + 100 + 1200 = 9750 W or 9,75 kw
important:
Nominal power of most stabilizers (normalizers) in the passport it is specified at 220B, and the key parameter of this unit is the indicator of the maximum input current. At the input current, other than 220V, the maximum power may change.
To avoid such a mistake, use a special table:
| Mains voltage, volt | 140 | 150 | 160 | 170 | 180 | 190 | 200 | 220 | 240 | 250 | 260 |
| Stabilizer power change factor | 0,64 | 0,68 | 0,73 | 0,77 | 0,82 | 0,86 | 0,91 | 1 | 0,92 | 0,88 | 0,85 |
| Coefficient for power adjustment | 1,57 | 1,47 | 1,38 | 1,29 | 1,22 | 1,16 | 1,1 | 1 | 1,09 | 1,14 | 1,18 |
This means, that if according to the results of measurements in the power grid you have established, that the lowest voltage in your network is 160V, then the previously calculated power must be multiplied by a factor 1,38. we will receive:
9,75 X 1,38 = 13,455 kw
With that in mind, that the stabilizer should be chosen with a power reserve of at least 20%, we will receive, that for your apartment the device with parameters not less will approach 17 kw. Of course, you can do with a stabilizer and less power, but then you have to manually turn off some of the devices or watch, so that they are not included at the same time.