The most reliable 2 Large margin of safety 3 Best price category

Modern gas boilers are high-end equipment with a processor system for monitoring and adjusting operating parameters. Of course, the electronics are sensitive to voltage drops and any slight surge in the network can disable the control unit, the cost of which in the price of the boiler is 30-50%. This will lead to a shutdown of the heating system (which is highly undesirable during the winter months) and unplanned expenses, and not small ones. To prevent such consequences, network stabilizers are used that equalize the drops, and in critical cases simply turn off the equipment.

In our review, we will consider these devices of various types (most widely used on the market), which are best suited for protecting heating boilers. The rating was formed on the basis of the characteristics declared by the manufacturer and the experience of the owners of this equipment.

The best relay-type stabilizers for gas boilers

The most popular devices in Russia for the stable operation of gas boilers are relay-type models. They belong to the class of automatic transformer devices with mechanical adjustment of stabilization. The most important positive characteristic of relay-type products is considered to be a quick response to voltage surges (up to 20 ms).

4 Powercom TCA-2000

Profitable price
Country: Taiwan
Average price: 2000 rubles.
Rating (2019): 4.2

Available relay voltage converters for gas boilers are offered by manufacturers from China. The Powercom TCA-2000 has a compact housing that houses 4 European-type output sockets. They are protected against accidental entry of people or objects. For complete safety, all sockets have a ground loop.

Consumers note the presence of an automatic switch that prevents overloading the device and protects it from short circuits. After troubleshooting the electrical network, you must turn it on with the push of a button. The advantages of the stabilizer include the ability to withstand high loads. Even in conditions of poor operation of the electrical network, the correct operation of the boiler is maintained. The model is silent during operation.

3 Huter 400GS

Better sinusoidal current stabilization
Country: China
Average price: 2680 rubles.
Rating (2019): 4.5

The relay stabilizer Huter 400GS has the best value in this category and is great for protecting the electronic part of a gas boiler. It operates in the range from 110 to 260 V with the maximum possible stabilization deviation of no more than 8%. It is easy to connect, has a digital voltage indication, small dimensions and is mounted on the wall. But its main advantage is that it provides a sinusoidal current without distortion at the output.

Owners who have chosen this stabilizer point out other strengths of the Huter 400GS in their reviews. They are expressed in the presence of protection against short circuit, high voltage or overheating of the wiring. In all these emergency situations, automation will disconnect from the network and prevent damage to expensive equipment.

2 RUCELF BOILER-600

Buyer's Choice
A country: Russia (produced in China)
Average price: 3585 rubles.
Rating (2019): 4.8

The relay stabilizer RUCELF KOTYOL-600, produced and developed in Russia, has proven itself in the market of electrical goods. A simple and at the same time reliable protection mechanism for an expensive gas boiler control unit remarkably resists frequent voltage drops, while maintaining accuracy until the end of its service life.

Owners love this compact wall mounted unit. Although it costs more than similar models from other brands, the RUCELF stabilizer stands out with more reliable components and high performance. It is great for gas heaters, the electrical part of which consumes up to 400 watts (these are almost all modern models). The reviews positively assess the joint work of the stabilizer with equipment such as Baxi, Ariston, Ferolli and Vaillant. If there is grounding, the correct connection (phase and zero must come to the appropriate connectors), the stabilizer and the heating boiler connected through it will serve its owner for the maximum possible length of time.

The main performance characteristics of voltage stabilizers of various types

Operating characteristic	Relay	Servo	Triac	inverter
Input voltage, Volt
Response time, milliseconds				instantly
Voltage equalization error
Voltage regulation	stepped		stepped	instant
Surge protection, %
Service maintenance	Not required	Required	Not required	Not required
Service life, years

The summary table does not take into account the cost of equipment, because it largely depends not only on the type of construction, but also on the operating power of the stabilizer. Moreover, in the matter of ensuring the reliability of individual heating systems, the price issue is shifting to the background.

1 Daewoo Power Products DW-TM1kVA

Optimal combination of price and quality
A country: South Korea (made in China)
Average price: 3590 rubles.
Rating (2019): 5.0

The best low cost gas boiler stabilizer with good specifications is Daewoo Power Products DW-TM1kVA. At an affordable price, it has a high efficiency (95%), decent power (1 kW), a small error (8%), a wide voltage drop limit (140-270 V). The response time is 20 ms, the device has protection against interference, overheating, high voltage and short circuit.

Consumers love the wall-mounted model's small footprint, light weight (only 3.285 kg), stylish design and digital display. The only drawback, many consider a short electric cord.

The best electronic stabilizers for gas boilers

Instead of mechanical stabilization switching, thyristors and triacs are used in electronic devices. Devices of this type are distinguished by reliability, high accuracy and speed. In addition, they are unpretentious in operation and do not emit strong noise.

3 IEK Prime 0.5 kVA (IVS31-1-00500)

Best price category
Country: China
Average price: 4520 rubles.
Rating (2019): 4.2

The Italian device Ortea Gemini 10-15 / 7-20 became the most high-precision voltage stabilizer in our review. It exhibits a unique error of 0.5%. The device is designed to work in a single-phase household network with voltage drops at the input from 140 to 290 V. The stabilizer quickly responds to voltage surges (20 ms), overload and short circuit protection is provided.

Domestic consumers appreciate the ability to operate the stabilizer in a wide temperature range (-15...+40°C). The digital display clearly shows input and output voltage readings.

2 Leader PS600W

Large margin of safety
Country Russia
Average price: 9380 rubles.
Rating (2019): 4.8

The stabilizer is manufactured using the best quality components, which determines a long service life. The supported power is optimal for connecting a heating boiler or other equipment that is sensitive to voltage drops. The device generates an output signal without distortion, reliably protecting the electrical circuits of more expensive devices. Stabilization accuracy is provided at the level of 4-5%, which has become one of the best indicators for equipment of this class.

The owners note a fairly wide corridor of fluctuations in the network (155-265V), in which the rectifier remains operational. The presence of protection against high voltage and short circuit is also one of the strengths of this device. The absence of moving parts and a decent level of assembly ensures trouble-free operation with any deviations in network performance. In user reviews, this characteristic is most often mentioned as key to the normal functioning of a gas boiler and heating system.

1 Stihl VoltSaver R1000

The most reliable
Country Russia
Average price: 11653 rubles.
Rating (2019): 5.0

This is the best stabilizer in this category, which is optimal for protecting gas boilers and uninterrupted operation of heating systems. The negative impact of mains voltage fluctuations on the connected electronics can be avoided thanks to the built-in filter, which equalizes the input signal at a speed of 350 V / s, while the error is no more than 4%.

Calm VoltSaver R1000 is designed as a desktop model, characterized by instant response and smooth voltage adjustment. This characteristic was achieved thanks to a multi-stage stabilization system. In their reviews, the owners also highly appreciate the additional security complex that turns off powered devices in various emergency situations (short circuit, overheating of wires, etc.). The presence of two outlets at the outlet and more than excess power for the operation of a gas boiler allows you to connect a kitchen TV or other expensive device to the stabilizer.

The best inverter voltage stabilizers for gas boilers

Stabilizers of this type respond faster than others (instantly) to changes in mains voltage, which provides better equipment protection against surges. They operate on the principle of double conversion, which determines the unique characteristics of the device. In the private sector, due to weather conditions or other reasons, an increase to 380 volts (phase-to-phase short circuit) can easily occur, which will disable even the electronics that are connected through the stabilizer (at its low response speed). Whoever is not threatened by the consequences of an emergency is the owners of inverter protective devices, the best models of which are presented below.

3 Energy PN-500

Ability to work as a UPS
Country Russia
Average price: 7900 rubles.
Rating (2019): 4.6

This stabilizer works on the principle of double conversion of the incoming voltage, providing a reliable power supply to the gas boiler during power surges. Feedback on the operation of this device is more than positive. Owners appreciate the protection of connected equipment against various AC mains fluctuations. The stabilizer immediately breaks the connection when the wiring heats up, short circuits and power surges that go beyond safe operation.

In addition, when connecting special batteries, this device can function as an uninterruptible power supply. The parameters of the device expanded in this way (if the battery capacity meets the required values) can provide autonomous operation of the heating system for up to 12 hours. Thanks to this technical solution, the owners consider Energy PN-500 one of the best stabilizers for gas boilers.

2 SDP-1/1-1-220-T

Stable Performance
Country Russia
Average price: 7270 rubles.
Rating (2019): 4.8

A modern stabilizer operating on the principle of double conversion is produced by the domestic group of companies Ruselt. The device has a fair resistance to network loads and, thanks to the high quality of parts, demonstrates an impressive margin of safety. At the output of the converter, a voltage is generated within the range of 218-222 V (the most accurate stabilization) with a sinusoidal current that does not have high-frequency network interference.

For reliable operation of individual heating systems, some owners successfully use SDP-1 / 1-1-220-T, connecting gas equipment through a stabilizer. In their opinion, this is one of the best devices on the market - this is how users explain their choice in the reviews. The output power allows you to connect devices with a total load of up to 700 W, which means that other expensive equipment can be protected along with the boiler.

1 Stihl IS350

Buyer's Best Choice
Country Russia
Average price: 4956 rubles.
Rating (2019): 5.0

Distinctive features of this stabilizer are the presence of electronic protection against short circuits, internal overheating, network overloads and filtering of impulse noise. The last factor determines the output voltage with an undistorted sinusoid, which ensures the durability of the gas boiler control unit. The equipment works when there is 90 to 310 V input, otherwise the stabilizer will disconnect from the AC mains. Voltage equalization occurs instantly (even an ordinary incandescent lamp does not flicker). This quality of work was liked by the buyers who chose this model.

Stihl IS350 will ensure reliable operation of the heating system and protection of expensive equipment (boiler) from power surges. Made in an elegant metal case, the stabilizer is mounted on the wall and does not take up much space. It can be used to protect a gas boiler, computer equipment, TV, audio equipment and other electrical appliances, the power consumption of which does not exceed 300 watts. These characteristics are also confirmed in the reviews of the owners of the Shtil stabilizer, who consider their choice the most correct decision. Despite being more expensive than other models, the level of protection offered is well worth the investment.

Gas boilers are often used for heating country and private houses, summer cottages, the owners of which, due to poor-quality power supply to the periphery, often experience drops in the electricity network. Such differences adversely affect the operation of heating boilers, significantly reducing their life. Therefore, voltage fluctuations in the network must be excluded. Special devices - stabilizers can help with this. What are the stabilizers for a gas heating boiler and how to choose a device - read below.

A stabilizer is a device that regulates the voltage and frequency of the current in the network, which allows all devices and systems that work and electricity to function stably. That is, the main function of the stabilizer is to protect equipment from wear and burnout. In addition, heaters connected through the stabilizer operate in a more economical mode, which reduces both gas consumption and electricity costs.

Thus, the stabilizer for a gas heating boiler must:

1. Provide power to the boiler and its uninterrupted, uniform operation in accordance with the technical requirements of the device.
2. Protect the device from overheating, short circuits.
3. Redistribute too low voltage in the network, maintaining the operation of the boiler.
4. Perform an emergency shutdown in the event of sudden surges and increases in input voltage beyond its own technical capabilities and automatically return to work after normalization of the power supply.

In order to navigate the differences between the models, to have an idea about the performance of the device, it is necessary to pay attention to the main engineering characteristics of the stabilizer.

Indicative are: the response time of the device to changes in the network; responsiveness of the device; range of input levels and changes in the magnitude of the output voltage; estimated term of operation of the stabilizer.

Not the last role is played by the price of the device. If you are offered an electronic stabilizer for less than 5-6 thousand rubles, then most likely you have a low-quality Chinese device that will quickly fail or, worse, will not be able to protect the boiler from a short circuit.

Which boiler to choose for heating the house, so as not to overpay for fuel later? We answer the question in the following article:

Recommendations: how to choose a voltage stabilizer for a gas boiler

The continuity of the operation of a gas boiler, the safety of it and neighboring electrical appliances can only be guaranteed by a properly selected stabilizer that meets all the requirements of the electrical system. Several factors influence the choice of stabilizer.

So, in order to choose a suitable heating stabilizer, you need to pay attention to:

1. Number of phases. The stabilizer can be single-phase and three-phase. The phase should be selected depending on the type of power supply. So, if the network is single-phase, then the stabilizer must be with one phase.
2. The power of the device. The power of the stabilizer is calculated by summing the output of all devices that will be included in the circuit. It is better to select a power stabilizer with a margin of 30%.
3. stabilizer accuracy. The devices are manufactured with an accuracy of determining the voltage in the mains in the range from 1 to 10%. The higher this indicator, the better the device will work. But the higher will be its cost.
4. Mounting type. The device can be wall, floor and ceiling. The difference between the models will be only in the design of the case. The most compact, convenient and safe (the wires will not be located under your feet) are wall-mounted devices.

Not the last role, when choosing a device for stabilizing the voltage and uniform operation of the gas heater, is played by the principle of operation of the stabilizer. It is on which device you choose by type that the speed of its response to a change in mains voltage, the ability of the stabilizer to smoothly regulate the supply at the input will depend.

Double-circuit boilers are also different. Find out how they differ and which one is suitable for you on the website:

Features of voltage stabilizers for heating boilers

The operational life of the stabilizer, the cost of the device and its performance indicators depend not only on the manufacturer, power and size of the stabilizer, but also on its type.

Today, the following types of voltage regulators are distinguished according to operating principle:

1. Servo motor(servo driven). The principle of operation of such devices is similar to the operation of a conventional transformer. This explains the low speed of the device's response to a change in voltage in the network, the fear of overloads. The advantages of the devices include smooth voltage regulation according to the stepless type.
2. Relay. The relay stabilizer has a compact size and low weight, is resistant to frequent changes in input voltage and is able to quickly respond to changes in the network. The main shortcomings of devices: rapid wear of the relay, low accuracy of the output voltage, step change in the voltage value.
3. Triac(thyristor). The thyristor stabilizer is characterized by quiet and smooth operation, high accuracy and response speed. The disadvantages of such devices include their high cost. In addition, control boards in thyristor devices often require frequent reconfiguration and replacement.

In addition, a ferroresonant stabilizer is distinguished separately, which is similar in principle to a conventional transformer, and high-frequency pulse devices with a PWM voltage boost. The latter are distinguished by reliability and high accuracy. The disadvantages of the devices include their high cost and low upper output voltage threshold.

What heating method to choose for a country house? You will find the answer to the question in the material:

What stabilizer is needed for a gas boiler

For a gas heating heater included in a standard single-phase network (220v), an electric stabilizer with thyristors or triacs as semiconductor elements that act as switches between the windings of an automatic transformer is ideal.

Electronic devices have a lot of advantages, among which are:

• High accuracy of output voltage level stabilization; Durability (estimated service life of the device is 10-15 years);
• Noiselessness of the device;
• Quick response to changes in mains voltage.

The disadvantages of the devices include their relatively high price and excessive responsiveness to network interference.

Based on user feedback, the most effective and durable electronic voltage stabilizers for gas heaters are the following devices: Shtil R600-ST, Teplokom ST-800.

To protect against short circuits not only, but also a number of other electrical appliances, to protect sockets will allow the Progress stabilizer (Progress) 8000SL-20 with thyristor switching keys. This appliance will last at least 10 years and is perfect for groups up to 6.4 kW (8000 VA) total power. Stabilizers Garant CH-400 and SinPro CH-750PT are suitable for protecting a double-circuit gas boiler.

You can protect the gas boiler and other household electrical appliances from burnout with the help of special network filters.

Most often, the surge protector has the form of a conventional network extension cord. The main differences are that the filter has special safety units and switching buttons. Among the most high-quality and popular filters, one can distinguish devices from Photon, Power cube, Defender, Supra Jen Tech, Krauler. Depending on the model, filters from these manufacturers can be designed for both one and several outlets.

Connecting a gas boiler to the mains

Today, there are several schemes for connecting the boiler to the mains. The most popular - through a plug with a grounding contact and a two-pole switch with a minimum distance between contacts of 0.3 cm or more.

Regardless of the method chosen, the boiler is connected through a stabilizer or safety filter to a shield with mandatory grounding.

To ensure effective grounding, a special circuit can be organized. If there is not enough space for the circuit, then the boiler can be grounded in a modular (point) way using electrodes. At the same time, the resistance for grounding the gas boiler should be no more than 10 ohms.

The inclusion of a gas boiler in the electrical network is a responsible event, which is better to entrust to an experienced master. But if you are confident in your abilities, then you can connect the device on your own. The main thing is to strictly follow the instructions for the boiler and the fire safety rules.

Characteristics of a voltage stabilizer for a gas boiler (video)

A stabilizer for a gas boiler is an indispensable device that allows you to extend the life of a heating device connected to the mains. The selection of a stabilizer is a rather laborious undertaking, during which it is necessary to take into account many nuances associated with the type of power supply and the characteristics of the device. Using the above recommendations, you can choose a really high-quality, suitable device that will reliably protect the heater from the influence of power surges in the network, and will allow you to enjoy the operation of a gas boiler for more than one year.

Modern gas boilers are equipment that instantly responds to the slightest voltage fluctuations in the network, especially to unplanned short-term outages. In some areas of our country, this situation is an established norm. Preventing premature wear and damage to equipment, under such conditions, you should think about purchasing a voltage stabilizer. In this article we will try to figure out how to choose the right voltage regulator for a gas boiler. What criteria should be followed.

Installing a voltage stabilizer on a gas boiler: an urgent need or an unjustified luxury?

New generation gas boilers are units whose uninterrupted operation is fully controlled by electronics. That is why the units are so dependent on the stability of the power supply. The slightest voltage drops in the network cause a malfunction of the electronics and emergency shutdowns of the boilers.

Voltage stabilizer for gas boiler

For the trouble-free operation of electronic equipment, it is required to ensure the voltage in the network is 220 V, while the error should not exceed 5%. It's no secret that Russian electric grids cannot provide such conditions, and there are many reasons for this: worn-out power lines; imperfect technologies; thunderstorms in the atmosphere (especially in spring and early summer); sharp increases in network load.

Protection of networks and expensive gas equipment will be fully ensured when installing a voltage stabilizer. In this case, it is allowed to install stabilizers directly on a gas boiler or in general - on the whole building.

Choose the power of the stabilizer

Before purchasing a stabilizer, it is necessary to correctly calculate the power of the unit.

• When choosing a protective device, it is necessary to take into account the amount of power consumed (the one consumed by the boiler and the pump at the same time). It must be borne in mind that when starting the pump, the current consumed can exceed the nominal value by almost three times.

Types of voltage stabilizers

• In any case, the starting points for choosing a suitable stabilizer for a gas boiler will be the technical characteristics of the equipment, as reflected in the unit's passport, including.

Advice! Power. When choosing a unit, the power is calculated in the same way as the load power of the boiler equipment, multiplied by 5. The result is multiplied by a protection factor of 1.3. The resulting number will be an indicator of the power of the stabilizer for a particular network.

• Response time to voltage changes. This indicator determines the voltage drop, which is stabilized by the unit in 1 second.
• Input voltage range (measurements are taken in fact in the home network).

Gas boiler with connected voltage stabilizer

• Accuracy and compliance of output voltage indicators. The highest accuracy is provided by triac and thyristor voltage stabilizers, but these devices should not always be purchased, since it is enough for the uninterrupted operation of the heater of an average value of 5%, which is provided by relay and electromechanical counterparts.

The choice of a stabilizer always raises the question for the buyer: Whose stabilizers are more reliable? Russian or imported?
As the practice of operating Russian-made stabilizers has shown, they are considered quite reliable.

Choosing the type of stabilizer

Stabilizers differ in many ways. So, for example, the units can be located on the walls of the room (hinged) or on the floor (floor). The industry produces stabilizers operating on direct or alternating current, single-phase or three-phase.

Stabilizers use several ways to switch windings, according to this principle, units are usually divided:
With servo drive (electromechanical stabilizers), - the slider moves along the windings of the unit with the help of a servo drive. This type of stabilizer is made like a car transformer. Electromechanical stabilizers function thanks to built-in devices that ensure the operation of the transformer.

Schematic: servo stabilizer

The advantages of an electromechanical stabilizer include:

• gradual voltage regulation without the occurrence of phase disturbances and a decrease in the current sinusoid;
• small dimensions;
• high operability at various voltages, including the moments of occurrence of voltage surges from 100 to 120V.

Relay (electronic), - in this design, the windings are switched using a relay. At a low cost, such units have sufficient reliability and quality. The closed hermetic housing of the relay stabilizers prevents the penetration of dust and moisture into the structure.

Relay Voltage Stabilizer

The advantages of relay stabilizers are:

• relay stabilizers do not require maintenance;
• speed of reaction;
• high switching speed when the input signal changes;
• cost-effectiveness - the units have a low cost.

Attention! A significant disadvantage of electronic units is the stepwise regulation of the output voltage, which significantly reduces their use.

In design triac stabilizer voltages are used jointly by relays and triacs. The advantages of this type of stabilizers are:

Triac voltage stabilizer

• triac voltage stabilizers do not contain parts in the design of the unit that wear out during mechanical operation, which distinguishes them from relay and electromechanical stabilizers;
• these units are highly durable and reliable;

• triac units are available in floor and wall versions;
• complete noiselessness of the unit;
• during short-term power failures, overloads, the triac stabilizer guarantees the uninterrupted operation of household appliances, including a gas boiler;

Scheme: operation of a triac voltage regulator

• the system is equipped with a built-in multi-level automatic protection, which provides load disconnection in case of overcurrent, protection against short circuits, protection against excessively high and low voltage;
• the service life of the device, set by the manufacturers, is up to 10 years.

Thyristor. Stabilizers of this design have thyristor switches, which, when turned on or off, can affect the sinusoidal shape of the current, causing it to be distorted. The algorithm for measuring the voltage by several tens of times and determining the moment when the thyristors are turned on is determined taking into account the algorithm for changing the voltage in a matter of fractions of a second. Turning the thyristors on or off is controlled by a processor built into the circuit.

Tristor voltage regulator

Thyristor stabilizers are not threatened with overload in case of emergency situations that have arisen on the power supply networks - the microcontroller immediately sends a command to turn off the stabilizer.

The advantages of thyristor stabilizers are:

• noiselessness during the operation of the current conversion unit;
• durability - the thyristor can work more than 1 billion times;
• during the operation of thyristors, an arc discharge is not formed;
• economy in energy consumption;
• small overall dimensions;

Schama: tristor voltage regulator

• lightning-fast speed and accuracy in leveling and normalizing voltage;
• operating range at voltage levels from 120 to 300 volts.

With an extensive list of advantages of a thyristor stabilizer, the unit is not without some disadvantages:

• stepwise current stabilization method;
• high cost - this is the most expensive stabilizer of all existing on the market today.

Single phase or three phase? What stabilizer to buy?

The answer to this question is obvious: the gas boiler is designed for 220 V - a single-phase stabilizer is enough. If gas equipment is designed to be connected to a 380 V network, you will need to purchase a three-phase voltage stabilization unit.

There is a solution when a separate single-phase stabilizer is installed for each phase, this helps to save money when installing an expensive three-phase unit.

Scheme for connecting a voltage stabilizer to a gas boiler

Ways to install voltage stabilizers

Equipment installation methods depend on the model and type of the stabilizer itself. The industry produces models for floor and wall installation, vertical or horizontal installation and various cost. Mounting of wall equipment is carried out on self-tapping screws using durable dowels.

Single-phase voltage stabilizer: video

An indispensable condition for the proper operation of European gas boilers of the Ariston, Baksi, Beretta, Buderus, Wisman brands is to maintain a stable voltage, within 210-230V, which will require the purchase of a stabilizer.

A service center servicing heating equipment under warranty usually refuses free repairs if this condition is not met. Therefore, it is important to figure out how to choose a voltage regulator for a gas boiler.

Do I need a voltage stabilizer for a gas boiler

Modern heating boilers are equipped with sensitive automation, which is the "heart" of the boiler. The control unit regulates the operation of the burner, the intensity of circulation of the coolant, if necessary, changes the operating mode by reading the temperature in the room, and also performs other functions.

Automation is sensitive to voltage drops. With the next “jump” of voltage in the network, the control unit board may simply burn out. After that, you will need to replace the entire control unit. Repair, depending on the model, will cost 30-50% of the cost of the boiler.

Manufacturers of volatile heating equipment recommend connecting the boiler to the mains through a stabilizer. Without connecting an electric stabilizer, a company selling heating equipment has the right to refuse warranty service. For this reason, it is not recommended to turn on a gas boiler without a voltage stabilizer, even to check the performance of the heating system.

Types of stabilizers for gas boilers

The consumer is offered a wide range of stabilizers that use a different principle of operation and with varying degrees of efficiency ensure the safety of boiler automation. When choosing the right equipment, you will need to consider several important aspects:

1. Price.
2. performance.
3. Duration of operation.
4. Input and output voltage range.
5. Principle of operation.

Triac (thyristor) stabilizers

To date, triac stabilizers are considered better than other analogues, thanks to the following technical characteristics:

• Performance is no more than 10-20 ms, depending on the model.
• Output voltage accuracy 1-2.5%.
• Input voltage range from 120 to 280 V.
• Accuracy of input output voltage control with a maximum error of 0.5%.
• Absolute noiselessness in work.
• Long service life.

The principle of operation of triac equipment is based on the use of transformer switching using electronic keys. As a result, the device responds quickly to any changes in the input voltage.

The only drawback of the models is the relatively high cost compared to analogues. If desired, you can choose a thyristor stabilizer with an optimal price-quality ratio.

One of the main functions of the step stabilizer is to maintain the operation of the device when one of the triacs fails. In the event of an interwinding short circuit, the boiler automation will remain operational.

The triac converter is suitable for networks with constant voltage surges and drops.

Relay (electronic) stabilizers

Relay (electronic) stabilizer is cheaper than the previous model. Its use is limited to connection to electrical networks with minor intermittent changes. Relay devices have the following characteristics:

• Speed ​​100 ms.
• Output voltage accuracy 7.5%.
• Range 135-315 V.

As an advantage, it can be noted that the 220V electronic voltage stabilizer does not distort the mains sinusoid after conversion. Noise during operation is negligible or completely absent. Microprocessor control is used.

The disadvantage of relay models is a relatively short service life and poor quality. To increase the duration of operation, relatively recently they began to produce hybrid stations using protective resistors.

Servo (electromechanical) stabilizers

Electromechanical (servo-driven) stabilizers work using a special slider that moves the brushes along the contour using an electric motor. Due to this, the turns of the secondary winding are alternately switched.

The advantages of this type of converters are:

• High accuracy and smooth adjustment of the output voltage.
• The ability to withstand long-term limit loads and maintain stability during overloads.
• Low cost stabilizer.

The popularity of electromechanical stations limits the short life of the device - 1 year. After that, it will be necessary to carry out service maintenance and replace worn brushes and other mechanical parts of the structure. The station "noises" during operation, heats up and can cause a fire.

Double conversion stabilizers

The inverter stabilizer is almost perfect. There are no disadvantages (besides the high cost). The inverter stabilizing device responds very accurately and quickly to surges in the network. Provides smooth adjustment of the output voltage.

The principle of operation is based on the use of double conversion. Alternating current is transformed into direct current. After that, it is converted back to alternating current, but with a stable frequency. The output is a voltage with a stable sinusoid, which favorably affects the automation and the boiler processor.

During the selection of a suitable model, it is necessary to take into account the following features of the double conversion stabilizer:

• No electromechanical interference.
• Durability.
• Input voltage operating range 120-300 V.
• Speed ​​- the device reacts without delay to any surge or drop in voltage and equalizes it.
• High cost - the cost of the device is from 15 to 60 thousand rubles. Some owners of gas boilers decide that it would be more appropriate to purchase a UPS than to buy a stabilizer.
• Low efficiency - is only 90%, which is quite small compared to other models.

PWM Stabilizers

The principle of operation of the stabilizer with pulse-width modulation is based on the use of a special pulse generator. The parameters of the voltage waves are constantly changing, depending on the difference between the input and output voltage. As a result, the stability of the current frequency at the output is ensured.

The main advantage of the PWM station is the ability to fully synchronize with the equipment that consumes electricity. The PWM voltage regulator used for gas boilers performs protective functions, and also creates the conditions for maximum processor performance. This type of converter is most in demand when the boiler is connected to a low voltage power supply network.

Ferro-resonance stabilizers

Ferroresonant modules use the principle of saturation of magnetic transformer cores. In the early 60s of the last century, devices were installed to stabilize the operation of household appliances.

A ferroresonant voltage stabilizer for working with a gas boiler for domestic purposes is practically not used. Stations are placed in high-capacity boiler rooms.

The advantages of converters are:

• High accuracy of the output voltage, the error is not more than 1-3%.
• Response speed.

As disadvantages: the high cost of the device. For the cost of a ferroresonant stabilizer, you can purchase a UPS with equal power ratings.

How many phases should the stabilizer have

The choice of a single- or three-phase voltage stabilizer for a gas boiler primarily depends on the parameters of the electrical wiring connected to the residential building. If the mains supply is single-phase, an appropriate converter is required.

With a three-phase power supply, you will need to install either one stabilizer designed to connect three phases, or three single-phase ones, which will provide a more stable output voltage.

Single phase stabilizers

Single-phase stabilizers are mainly used for domestic purposes. Are established in apartments and private houses. It is allowed to connect to the mains with a rated voltage of 220 V. Household appliances are designed to rectify the maximum maximum power up to 135 kVA.

The use of single-phase converters for industrial purposes is also allowed. In this case, a three-phase network will require the simultaneous connection of three rectifiers at once. Such a decision can be justified, given that single-phase devices produce current with a more stable frequency and sinusoid.

Three-phase stabilizers

Three-phase stabilizers are mainly used for industrial purposes. It is allowed to connect the rectifier to boilers with a large production capacity. The operating conditions recommend the use of three-phase modules for the mains with a rated power of 380 and 400 V.

You can also connect a three-phase device for domestic purposes, provided that a network with a voltage of 380V is connected to a private house. But in general, for a gas boiler of low power, there is no need to install a three-phase model.

What stabilizer is needed for a gas boiler

For a gas boiler, a voltage stabilizer is better that meets several basic criteria:

• Response time - this parameter is indicated in the technical documentation and is measured in ms (milliseconds). The lower the coefficient, the better it is for boiler automation. In fact, the response time means how long the stabilizer, at the next jump, will be able to correct the voltage.
• The input voltage range is a parameter that indicates the boundaries within which the rectifier can operate. Upon reaching the limit values, the device will simply turn off the gas boiler. Frequent shutdowns during the heating period can lead to freezing of pipes. Therefore, the best voltage regulator for a gas boiler should have a run-out of approximately 140-260 V.
• Correction levels - the accuracy of maintaining and the stability of the output voltage depend on this coefficient. The more correction levels the device has, the better it copes with the tasks.
• Operating temperature range - the requirement for the stabilizer is to maintain performance at an ambient temperature of +5 to +40°C. For industrial devices, a special casing is provided, which makes it possible to operate even at minus values.

Another important criterion is the type of installation. For gas boilers, hinged models with low weight are mainly used. Floor (shelf) devices are designed for high-power three-phase boilers. The best solution would be to purchase a module with universal mounts.

Given all the above requirements, it becomes obvious that a gas boiler needs an electronic or relay, or alternatively an inverter type of stabilizer. Only such models can fully cope with the load and power surges in the network, as well as ensure the operability of automation.

How to calculate the power of a voltage stabilizer

The required minimum power of the stabilizer for 220V is calculated as follows:

• It is necessary to find out the electrical power of the automation of the boiler and the circulation pump. The coefficient is given in the technical documentation.
• Get the total capacity of all power consumption points connected to the station.
• Multiply the amount received by 1.3 - this will take into account the starting current. When the circulation pump is turned on, the actual electricity consumption may triple.

As practice shows, the consumer rarely manages to correctly calculate the actual power on his own. Therefore, with the question of how to calculate the electrical power of the voltage stabilizer for connecting a gas boiler, you can contact a consultant when purchasing the station, or use a special online calculator.

How to connect the stabilizer to the gas boiler

There are rules for installing the stabilizer, the implementation of which is necessary to ensure long-term and safe operation of the device. Detailed requirements are described in the technical documentation.

The basic rules are as follows:

• The voltage stabilizer must be located in a dry place. It is strictly forbidden to install the device in rooms with high dampness: garages, bathrooms, etc.
• The module must not be located in close proximity to combustible and flammable substances.
• Free access of fresh air to the body of the device is required. For this reason, the module must not be installed in a cabinet.

Connection to the mains is carried out through a conventional household socket with grounding. Household wall-mounted voltage stabilizers for gas heating boilers are mounted in the immediate vicinity of the heating equipment. Connection to the boiler is made through a special socket on the body.