Reacts promptly to dangerous changes! Voltage stabilizer for gas boilers: which one is better to choose
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The main function of uninterruptible power supplies (UPS) is maintain power supply to consumersand in cases of short-term power outages at the substation.
Its design includes a voltage stabilizer and one or more (two or more) batteries.
Thus, during the working cycle, the parameters of the electric current supplied to the boiler do not change, and when the power supply is stopped, the heating device continues to function from the built-in power elements - batteries. The voltage stabilizer converts the output electrical signal of the household network, bringing it to stable parameters.
If the power is cut off, it will not work. Its main task is to prevent damage to the equipment connected to it, which is affected by the "surges" of the external network voltage.
That's why A UPS can replace a stabilizer, but not vice versa.
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How to choose a voltage stabilizer for gas boilers
When choosing a voltage stabilizer for a gas boiler, it is necessary to rely on several parameters.
By type
Electromechanical The devices consist of a solenoid and an electric motor that moves brushes along its coils. Such devices are not very expensive, but they are not suitable for gas boilers.
The contact between the brushes and the coil causes sparks. In addition, the products are quite noisy and operate slowly. Service life 5 years.
Relay devices use a different method of switching between windings: using a relay. The greater the number of windings on the coil, the smaller the error. The input voltage can "jump" from 100 to 290 V, and the stabilization error is no more than 8%.
The advantages of such devices are considered to be low noise, the ability to work for some time under overloads and low price of the products. Disadvantages: a small delay in stabilization and gradual wear of the relay. Service life 5 years.
Electronic stabilizers are modern and reliable devices. They have the highest speed, since the switching of the autotransformer windings is done by thyristors (semiconductors). The entire circuit is controlled by an electronic board that compares the input voltage with the reference voltage and, if necessary, changes it. Such stabilizers can work for a long time under overload, are small in size and will last 10-15 years. But this is the most expensive device of all.
Photo 1. Electronic voltage stabilizer from the manufacturer IEK. The device has a built-in display that shows the readings.
By power
To select a stabilizing device, You need to study the passport of your existing gas boiler. There should also be a nameplate or sticker on the device body indicating its actual power.
Attention! Electric power is often confused with thermal power. They can be easily distinguished by their units of measurement: thermal power is indicated in kW (kilowatt) and lies in the range 10-100 kW, and the electric one W (watt) and is approximately equal 100-200 W.
To calculate the required power of the purchased stabilizer, the parameters of the boiler itself and the external pump are taken into account (if it is built into the boiler, this point can be skipped). Moreover, for the pump, its power should be multiplied on 3, such a “reserve” is needed to account for the starting current, which when the pump starts 2-3 times exceeds the nominal value.
Reference. Electricians do not recommend connecting both a pump and a boiler to one stabilizing device. It is better to use two devices.
Now, adding the obtained values and multiplying them by 1.3, we will get the required power, it is for this that the stabilizer should be designed. Example: boiler power 62 W, pump - 70 W. Calculation: (62+70*3)*1.3=353.6 W.
Features of operating parameters
Different models of stabilizers are capable of operating in certain (acceptable) ranges of input voltages.
To select a device with the required parameters, you should find out what spread of U values (actual voltage in the socket) in the existing network, for which it is recommended to measure the voltage manually using a conventional tester.
The measurements are taken on different days and times, which will provide a more accurate range of values, since "jumps" U are related to the overall load experienced by the electrical substation. For example, at night it is less than during the day.
Important! When working with the tester, you must use the AC voltage measurement mode. Otherwise, the device may fail.
After drawing up a graph of daily changes in U, it is easy to determine what range the stabilizer should be designed for. It is better to expand it by adding an additional 10-15 V. Most modern devices are capable of operating at voltage 140-260 V. If during operation U deviates from the maximum permissible value, the built-in protection board will disconnect the boiler or pump from the power supply circuit. And when the voltage returns to normal, it will restart the power supply to consumers.
Additional selection criteria that are worth paying attention to
When purchasing, you need to pay attention to the features of the product:
- availability of additional indicators on the dashboard;
- installation method at the workplace;
- equipment;
- warranty period manufacturer.
If you plan to connect a boiler that requires power supply 380 V, then you need to look three-phase stabilizer.
Some owners connect each phase 380 volt boiler to a separate device, which allows you to save some money by refusing to buy expensive industrial devices.
According to the method of placement, stabilizers are divided into types: wall and floor. The choice of the required type of installation depends on the buyer's preferences and the specifics of the boiler room arrangement.
What are the popular manufacturers and the cost of the devices?
Among the models available for purchase are: There are several manufacturers whose products are purchased more frequently:
- Stabilizing devices "Teplokom" from Bastion, there are devices for indoor and outdoor installation. Input U spread: 145-260 V. Provides voltage supply 220 V at the output, and the error is no more than 9%. There is lightning protection, emergency shutdown board. Stabilizers are mounted on the wall using a bracket.
Photo 2. Voltage stabilizer Teplocom from the manufacturer Bastion. The device is quite compact, fits in the palm of your hand.
- Company "Shtil" created a line of stabilizers specially designed for gas boilers, this series "T". Such relay devices rectify voltage with an error 5.5%, They are mounted on the wall and have an emergency shutdown system.
- "Resanta", "Lynx", "Energy" are purchased less frequently, but there are also some worthy models among them.
The cost of the devices varies depending on the type, as well as the power, accuracy of the stabilization process and brand. For example, prices for products "Teplokom" hesitate from 4 to 6-7 thousand rubles., and the ruler "Calm", presented 10-12 models, has a price range 5-20 thousand rubles.
Useful video
Watch the video to learn how to choose the right voltage stabilizer for a gas boiler.
Stabilizer quality - safety and long service life
To purchase reliable and safe electrical equipment, Experts advise contacting specialized stores.
There, employees will expertly advise the client on the intricacies of choosing a stabilizer and offer suitable options.
The important point is availability of a warranty card with the seller's seal and signatureIn case of a breakdown that is not the owner's fault, it will be possible to exchange or repair the device free of charge.
The savings won't pay off, if the stabilizer is purchased at the market, because the origin of such a device is sometimes unknown even to the seller.
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