Rating of the best surge protectors for the home and kitchen + list of good manufacturers

Why do you need a surge protector?

First, let's look at how much current the user receives at the outlet from the power plant.
Generators create a current with an EMF in the form of a sine wave. While the current flows to the end consumer, an almost ideal sinusoid becomes overgrown with interference, which is subsequently expressed in the form of noise. Harmonics are added to the voltage waveform, which will cause interference in the operation of devices connected to the network. Additionally, voltage drops and surges may occur due to increased load on the network, power outages and other unpredictable factors. A surge protector is needed to filter out network interference so that devices connected to it receive clean power, and to reduce noise coming from power supply devices. This task is accomplished by an electrical circuit, thanks to which changes in frequency and small voltage surges are simply absorbed. In the event that network problems exceed the limits set by the manufacturer, the supply of electricity through the surge protector is stopped because the fuse is tripped.

In stores you can find surge protectors with different numbers of outlets. Thanks to this, several pieces of equipment that need protection from voltage surges and other interference can be connected to one device at once. However, such filters have a maximum permissible load. For example, you cannot connect several high-power devices to them at once. It is not recommended to neglect this indicator, since otherwise the manufacturer cannot guarantee the high-quality operation of the product.

Which surge protector is better to buy?

The main criteria for choosing such devices include the number and type of sockets. This characteristic depends on the number and features of electrical appliances that are planned to be connected.

Modern models can support up to ten connections, but connecting a large number of consumers to them can cause overload and shutdown the filter.

It is worth paying attention to the maximum load of the device. The correct choice depends on the total power of electrical consumers.

Most modern surge protectors can withstand a maximum load of no more than 3500 W. This is enough for use at home.

An important indicator of the functioning of the model is the current strength. It determines the nominal value characteristic of the electrical network during normal operation and the maximum permissible limit.

To connect home appliances, we recommend choosing a device with a rated current of more than 5 A.

Among European sockets, there are two main types - C and F. The difference between the latter is the presence of contact plates for grounding. It is necessary to prevent electric shock from accidental contact with a broken and connected device, therefore it is considered safer.

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Model range of Pilot network filters

The product range of the domestic company ZIS is represented by several series. They have different levels of protection and a range of functions. Pilot surge protectors are designed for consumers with varying purchasing power and meet any voltage stabilization requirements. The equipment range is represented by the following lines:

• S series;
• L series;
• GL series;
• Pro series;
• Bit series;
• T series;
• Single series.

Each line has a certain functionality and degree of protection.

Housing made of impact-resistant, flame-retardant plastic

Series S

Devices of this modification belong to the budget class and have a basic set of filtration tools. The design of this model provides the following means:

• Varistor. Designed to smooth out impulse noise. They arise when using tools and equipment whose operation is associated with the formation of a spark: drill, hammer drill, etc.
• Thermal fuse. Protects the device from overheating when the permissible power is exceeded.
• Fusible and thermal bimetallic fuses prevent short circuits from overload.

The surge protector has five Euro-type sockets with grounding contacts and one for connecting old-style plugs. Models with the designation Max differ from the basic modification by increased power up to 3.5 kW and a current of 15 A.

Advice. All ZIS products are developed taking into account all the shortcomings and parameters of domestic electrical networks. Accordingly, it is fully adapted to work in such conditions.

Series L

Has all the basic means of protection. The difference is the installation of three varistors, a filter to eliminate high-frequency capacitive-type interference. The light indication indicates the current state of the device. The body is made of high-strength and refractory plastic. The rosette group is located in one row.

GL Series

It has the same protections as the S and L series models. An inductive-capacitive filter is used to stabilize high-frequency interference. The gas discharge limiter provides protection against surges during lightning discharges. The sockets are covered with special covers to prevent electric shock to the child.

Pilot surge protector – protection at a reasonable price

Pro Series

The surge protectors in this series are premium class and have advanced protection features. Network diagnostic tools automatically determine the presence and absence of a ground loop. Diagnostics is intended for installation and subsequent stabilization of the phasing of the connected plug. The contact group is made of high-strength steel, which ensures reliable contact of contacting parts. One of the sockets is made of the Gadget Parking type, which allows you to connect one plug with round contacts or two with flat contacts at the same time. Excess cords to be connected are placed in a special holder.

Bit Series

Bit line devices have only one socket with grounding contacts, do not have an extension cord and are installed directly into the socket. This modification has all the anti-interference features of the L series models.

Series T

The design and degree of protection are similar to the Bit series. The difference lies in the number of sockets, there are 4 of them in this line, and two USB ports for charging mobile phones, smartphones, and MP3 players. The device is designed for a total connected power of 3.3 kW.

Single Series

This model is equipped with one socket with grounding contacts. The configuration and design are similar to the Bit series. The device is equipped with means of protection against the appearance of 380 V in the network. When the voltage exceeds peak limits (increase or decrease), the supply of electricity is automatically stopped and resumed when the parameter stabilizes.

ZIS products meet all GOST requirements. Each series has an optimal price/quality ratio. Due to this, Pilot surge protectors are in high demand and popularity among consumers.

Principle of operation

Based on their functionality, network filters are divided into:

1. simple devices with protection against short-term overvoltages and overcurrents;
2. electronic inductive-capacitive circuits;
3. combined devices.

Simple filters

These include varistor products, which include:

1. varistor, swelling short-term peak of overvoltage;
2. bimetallic contact or fuse acting as overcurrent protection.

Filters with varistors

They can be made from a single semiconductor or an assembly of them.

Single module

One varistor is used in the simplest protections.

At the nominal power supply of the network, it has high electrical resistance and does not allow current to pass through itself. If the voltage increases to a critical value of the order of 470 volts, then the semiconductor junction of the varistor breaks through and eliminates the overvoltage by closing potentials through its internal junction, which is accompanied by the release of thermal energy.

Varistor assembly

The classic circuit is assembled on the basis of a triangle with grounding of the middle point. Filter varistors protect the load from symmetrical and asymmetrical overvoltages in the network.

Grounding increases the efficiency of the circuit and removes interference through an additional wire connected to the ground loop.

Cheap surge protectors with a separate varistor assembly are widely used in everyday life. They do not filter high-frequency voltage interference signals, but can only limit the overvoltage pulse.

Overcurrent protection

High voltage that slips through varistors when they fail or for other reasons creates increased load currents on the connected equipment. To limit them, current protection is installed on the network filter:

1. fuse;
2. or an automatic reusable current cut-off device.

The second option is preferable: to put it into operation after the protection has been triggered, just press the corresponding button. This is more convenient than opening the case and changing the fuse, which still needs to be found first.

Electronic LC circuits

The principle of operation of the protection

The electrical resistance of resistive elements does not change depending on the type of current that flows through them. A completely different picture emerges for reactive elements:

• containers;
• inductances.

Their resistance is directly dependent on the frequency of the signal.

An inductive surge protector dramatically increases the resistance for the passage of high frequency currents. To do this, it is enough to place one coil with an inductance of about 60÷200 µH in each phase and zero wire in series with the load.

Low-frequency interference can be suppressed with a resistive resistance of up to 1 Ohm, but it is better to use a capacitor connected in parallel to a load with a rating in the range of 0.22÷1.0 μF, creating at least a double voltage margin for its operation.

Based on this principle, various filter circuits for reducing high-frequency interference are created.

For LC filters, two switching laws work simultaneously:

1. inductance dampens sudden increases in current;
2. The capacitor suppresses high-frequency voltage surges.

Combination devices

Elite surge protectors combine the operating principles of both protection schemes:

1. varistor assemblies that eliminate overvoltage pulses;
2. and LC circuits that dampen the high-frequency interference signal.

Control of their operation is facilitated by the Master Control function, carried out by a microprocessor device.

The well-known Pilot surge protector works according to this scheme.

Minimal filtering of high-frequency voltage signals is provided by a network filter with three components: a varistor with a voltage of 470 volts, two chokes for 60÷200 μH, a capacitor 0.22÷1.0 μF.

What does the price depend on?

For a filter device that protects your computer from crashes and reboots, and information from loss, the price depends on many factors.

No. Name of factor Range of characteristicsAdditional functions

Cable length 0.5 – 10 m Additional braiding or insulation can be used

Manufacturer brandFrom the fame of the company and country of manufacture

PowerUp to several thousand J

Number of sockets 2–10 pcs Eurostandard, grounding available

Connection portsPhone, modem, network, television, faxSometimes there are USB ports

Presence of a hot-melt and bimetallic filter element. Several elements of the same type or different types can be used

Additional protections/blocking Protection from overheating, dust, accidental shutdown Blocking the operation of several devices in excess of the filter capacity

Pulse withstand range 3.5–10 kAI or 3500–10000 A

Maximum load current not less than 10A

After reading the article, everyone can decide for themselves whether they need a filter. It should be taken into account that by saving a little and buying a regular extension cord instead, you can lose more expensive equipment.

It is impossible to imagine stable operation of a computer without a surge protector. It can protect your home hardware and appliances and also save you from data loss.

Sven network filters

The Finnish surge protector Sven appeared on the Russian market relatively recently. The bright representative of this brand, the SVEN Fort device, has a well-thought-out design. The bright design of the body, uncharacteristic of most filters, makes it stand out from the crowd of similar devices.

Unlike many of its brothers, it is not designed to lie on the floor. There are 2 holes on the back cover of the case that can hold the extension cord on the wall in a longitudinal or transverse position. There are 5 sockets on the front panel, and opposite each of them there is a red button responsible for the operation of a specific connector. There is also a button that turns off the entire device.

Two indicators on the housing indicate grounding and the operating status of the protection. The backlight color is different. According to customer reviews, the diagonal arrangement of the holes is not very convenient. When connecting some devices with elongated plugs, it is not possible to use the adjacent connector.

Inside the case:

• pay;
• 3 varistors;
• fuse 10 A.;
• thermal fuse.

There is also a SVEN Fort Pro model. According to experts, this device differs from the previous one in the presence of a voltage scale, which is slightly inaccurate. Its internal structure is identical to Fort. In both devices, solder sagging is observed.

Ways to improve simple network filter circuits

Radio amateurs can upgrade a surge protector with a switch and varistor by improving its circuitry.

To do this you need:

• open the case;
• Solder resistors R1, R2 and inductive coils (chokes) L1, L2 into parallel branches after the switch and varistor;
• alternately close the branches through capacitor C1 and resistor R3;
• terminal capacitor C2 can be installed between sockets anywhere. If there is no space inside the case, you can do without it. In this case, the parameters of capacitor C1 are adjusted.

Recommendations for choosing parts:

• chokes with open ferrite cores with inductance from 10 μH;
• capacitors – 0.22-1.0 µF;
• resistors - for a load of 500 W, resistors of 0.22 Ohm are used, R3 of at least 500 kOhm.

What is a surge protector

I think many (and I once) thought or think that a surge protector is an extension cord with a switch. Like this, for example, in the picture:

If you think so, then it’s time to dispel your misconceptions. If not, honor and praise to you!

A surge protector is a device that protects your electrical appliances from power surges and interference. A regular extension cord with a switch will not extend the life of your electrical appliances. A regular surge protector is very similar to an extension cord, but it has protection against the misfortunes described above.

Let's take a closer look at how it protects electrical appliances:

• voltage pulses - to protect against them, the network filter must have such a thing as a varistor. A varistor dissipates excess energy, converting it into heat. If he cannot stand it, he burns out, dying the death of the brave, but the equipment remains intact. When choosing, look at the “Energy Absorption Level”, or “Total Dissipated Energy”, or “Maximum Input Pulse Energy”, or “Surge Energy” parameter, which will be in Joules (J). The larger this parameter, the better. Many devices also have such a thing as a thermal switch, which is triggered when the maximum voltage value is exceeded and cuts it off, preventing the varistor from burning out. The presence of a thermal breaker is precisely desirable so that the filter does not burn out at the first power surge and serves for a long time.
• high-frequency power grid interference. An anti-interference filter (LC filter), which consists of an inductor and a capacitor, is responsible for combating them. Look at the parameter “Degree of suppression of high-frequency interference” or “Degree of suppression of high-frequency interference”, measured in decibels (dB), respectively, the more, the better.

The best universal surge protectors

Models of this type can be used with almost any device in the home or office. They combine a wide range of protection measures and are still affordable.

Orico HPC-8A5U-BK

5.0

★★★★★

editorial assessment

95%

buyers recommend this product

See review▶

A special feature of the model is the ability to connect a large number of portable devices for charging. It is provided by the presence of eight sockets and five USB connectors. The total output power of the filter is 4000 W.

Intelligent recognition technology automatically determines the parameters of a device connected via a USB cable, and then passes the current with the most suitable characteristics.

Advantages:

• a large number of exits;
• smart charging system;
• rapid replenishment of device energy;
• energy limit per port;
• ABS plastic body.

Flaws:

• lack of fastening elements.

Orico HPC-8A5U-BK is suitable for owners of a large number of mobile devices. An excellent choice for simultaneously powering household appliances and charging smartphones, tablets or cameras.

Belkin Surge Protectors BSV103

4.9

★★★★★

editorial assessment

95%

buyers recommend this product

The model is equipped with one socket and two USB outputs. The filter has a high level of energy absorption and protects the connected device from short circuits, overloads, and impulse noise.

Fast charging of mobile devices is provided by an output current of 2.4 A. Protective curtains prevent mechanical impact on the outlet. The case is made of durable plastic and has a rotating mechanism with an offset angle of up to 45 degrees.

Advantages:

• LED indication;
• USB support;
• compactness;
• fire safety;
• rotating mechanism.

Flaws:

• high price.

Belkin Surge Protectors BSV103vf can be installed near the workplace in both your home office and office. The ability to rotate the socket ensures convenient use anywhere in the room.

Schneider Electric APC PM5-RS

4.9

★★★★★

editorial assessment

93%

buyers recommend this product

A special feature of the device is the presence of a light indicator on the case, warning of potential danger in the network. This allows you to timely prepare equipment for a safe and smooth shutdown.

The filter protects electrical appliances from voltage surges, impulse noise, and short circuits. The number of sockets is 5 pieces, the cable length is 1.83 m. There is a space on the case near the last output for convenient connection of large power supplies.

Advantages:

• operating mode indicator;
• durable body;
• compensation of bursts and noise;
• early warning of potential threats;
• Ease of use.

Flaws:

• Not a particularly long cable.

Schneider Electric APC PM5-RS is ideal for home use. Wide protective functions and curtains for sockets contribute to the stable operation of electrical appliances and protect children from electric shock.

Crown Micro CMPS-10

4.8

★★★★★

editorial assessment

87%

buyers recommend this product

The main feature of the model is the high maximum load limit - 3600 W. The protective capabilities of the filter include protecting equipment from voltage surges, short circuits, and fire.

The presence of ten European-type sockets with grounding ensures the connection of a large number of devices.

The case also has two USB outputs, allowing you to power portable devices and batteries.

Advantages:

• 10 sockets;
• rated current - 16 A;
• status indication;
• USB support;
• durable body.

Flaws:

• loose contact contacts.

Crown Micro CMPS-10 will be useful when used in conjunction with household appliances or electronic equipment. An excellent choice for connecting a large number of different types of devices.

Pilot X-Pro

4.7

★★★★★

editorial assessment

85%

buyers recommend this product

See review▶

The model is distinguished by the presence of a microprocessor control system and provides reliable protection of devices from pulse and high-frequency interference, overload, and short circuit.

The filter has the function of switching on at zero current and protecting against voltage of 380 volts. It continuously monitors power network parameters, turns off sockets in case of power surges and automatically turns them on when the condition returns to normal.

Advantages:

• long cable;
• LED indication;
• Zero Start function;
• microprocessor control;
• soft shutdown.

Flaws:

• small distance between sockets.

Pilot X-Pro is designed for reliable protection of audio and video equipment. It will ensure stable operation of your computer, TV or music center.

READ ALSO

12 best uninterruptible power supplies

Compare the best surge protectors!

As you can see, the range is quite diverse, there is plenty to choose from! And in order to help you finally decide on the option, we have compiled a table that displays all the main advantages of each model and its average prices.

The best network filters without additional features

DAESUNG MC2343

DAESUNG MC2343

A comfortable, energy-efficient device with electrical outlet switches. Guarantees protection against sudden voltage surges. The device from a developer from South Korea has another advantage over its analogues: the contact holes of each socket on the device are arranged in one line, which is useful if there are large external power supplies or chargers. Each switch is opened by 2 power wires, and a child safety system is provided. The price will be 1100 rubles.

Advantages:

• all sockets are switchable;
• straight position of electrical outlets;
• child protection system;
• warranty period.

Flaws:

There is no protective system against high-frequency interference.

ZIS Pilot Pro GP

ZIS Pilot Pro GP

Compared to other inexpensive devices, this model is distinguished by good suppression of high-frequency interference and the ability to withstand high voltage. The last option is possible if there is a working grounding, since this function is implemented using a special lightning arrester. The extension cord also has a varistor protection system. As an addition, the device’s ability to indicate connection and the ability to install 2 flat plugs into the network at once are noted.

Along with this, users have had complaints about the strength of the elements and the quality of the product for a long time, which is why the extension cord has a relatively low rating in the rating of surge protectors. A warranty period of 5 years will help increase the attractiveness of the recommended device in the eyes of potential consumers. Costs 1300 rub.

Advantages:

• good suppression of high-frequency interference;
• effective lightning arrester;
• connection indicator;
• GP socket;
• warranty period.

Flaws:

• unreliability of the start key and thermal breaker;
• total load 2.2 kV.

Device of network filters of different functionality

Cheap SF options are essentially a “carrying device” with surge protection and an “on-off” toggle switch. Overvoltage protection is provided by a varistor.

More expensive surge protector designs include:

• Built-in LC filters, which are inductor coils. Designed to combat high-frequency interference.
• Coils with active resistance - resistors. The presence of these elements in the network filter circuit eliminates low-frequency interference.
• An automatic fuse that cuts off the power supply in case of current overload.
• Metal-oxide varistors, which operate at extremely high voltages, which are possible during a thunderstorm or short circuit.

Standard ratings of used parts:

• The inductance of the coils is 50-200 μH.
• The capacitance of the capacitors is 0.22-1 µF.
• Varistors - designed for voltages up to 470 V.

The circuit may include an overheat sensor that de-energizes the device when the temperature exceeds a set value. The sensor saves the SF from damage in cases where it is located near heating devices or if too high a load is connected to it.

How to choose a surge protector for your PC and other devices?

We all understand perfectly well that with large voltage drops, equipment may not be able to withstand it and fail. To avoid this, surge protectors are used. I will write about how to choose a surge protector for home use.

It is better to use surge protectors in any home, since almost everyone has many electrical appliances. They can burn out due to voltage surges, which a person is not always able to notice.

[aesop_image imgwidth=”500px” img=”https://computerinfo.ru/wp-content/uploads/2016/07/setevie_filtri.jpg” align=”center” lightbox=”on” captionposition=”center”]

Why are surge protectors needed?

They are designed to protect against certain types of interference, for example, voltage surges, that is, this means that over a certain period of time the optimal voltage changes. This can happen due to the connection of many powerful devices to the network. Pay close attention to what you connect and what might happen.

Surge protectors can protect equipment from lightning strikes or grounding problems. There is protection against interference that may be caused by other devices located close to each other.

What can surge protectors protect?

I would apply it to any equipment, that is, computers, laptops, other equipment such as refrigerators, televisions and other things. Can also be used for game consoles.

Types of network filters

Although these devices do not differ in appearance, they have a number of characteristics with different levels of protection, which may even imply turning off the equipment to save it.

Here, for example, are filters of the Essential type. The simplest and most inexpensive devices. You can connect cheap or old equipment to them.

Devices of the Home/Office type are already more advanced, as they have increased protection. They can be used at home without any problems.

Finally, the Performance type, already more expensive, but also more secure filters, expensive equipment is connected to them, which are very sensitive to the slightest interference in the network.

There are more expensive surge protectors that have higher protection ratings. If a regular filter can absorb approximately 960 J, but an expensive model can absorb 2500 J. It is clear that the more expensive the filter, the better it will protect.

It is worth noting that such filters are provided if the outlet in the house is grounded. This is not the case in ancient houses, which is why there is less protection. In any case, the equipment must be connected to a surge protector, preferably a good one.

Is the filter a fuse?

The surge protector is very fast because it works before the lightning strikes the house. Circuits located inside the filter quickly analyze what and how to do - dissipate or absorb excess energy. As I wrote above, a more expensive filter will turn off the equipment so that the electrical impulse or interference does not ruin it.

Some filters have a disconnect switch that, in the event of strong interference, simply turns off the filter; it must be turned on again to continue operation. Similar to the principle of a plug on a meter or in an electrical panel.

Cheap filters are like a simple fuse; if interference reaches it, then the surge protector is no longer suitable for use, but it does not protect the devices connected to it well.

Surge filters also have a warranty. Simple models can work for 3 years, and more professional ones up to 5 years, and maybe more. If the device breaks down, the manufacturer must repair it under warranty.

How to choose a surge protector, what to look for?

When choosing a surge protector, you need to highlight several characteristics

First you need to pay attention to the wire. The device must have a fastening so that the cord can be routed normally

This is necessary to avoid a bunch of wires scattered everywhere. There are models in which the wire can be rotated 180 degrees, which allows you to position it as you please.

The cord has lengths, for example, 3 meters, so they are used as an extension cord. Some models have the ability to be attached to a wall.

Surge protectors may have different distances between sockets, so choose depending on what devices you will connect.

You also need to pay attention to the number of sockets, which is very important if you connect few or many devices. It would not be bad if the filter had special curtains that would protect children from unnecessary touches

Why do you need a surge protector: a brief explanation

The very name of this electronic circuit explains its purpose. The word “filter” indicates the elimination of harmful interference, and “network” identifies its source.

In other words, all electrical debris coming from the power supply is screened out at the input of our device and does not affect the quality of operation of the household appliance. The main network signal of 220 volts with a frequency of 50 hertz passes through the filter without hindrance.

Electromagnetic interference in the network appears spontaneously; it is impossible to predict its occurrence. Even simply turning on an incandescent lamp generates an initial surge of current, creating a zone of transient processes.

Connecting the electric motors of a refrigerator, washing machine or dishwasher is associated with a change in inductive reactance. The current of such switching on can exceed tens or more times the rated load value.

This creates a significant voltage drop in the network. And then there follows a surge, forming high-voltage interference.

These processes take place for a short time. At the time of using analog household appliances, they did not cause much harm, and simple filters were built into audio and video equipment that performed their functions perfectly.

They reliably smoothed out all those quick dips and spikes in voltage by their design, preventing them from reaching sensitive electronic circuitry.

It is important to understand that the filter works exclusively with short-term dips and peaks in the input signal. If such a process takes a little longer, then another device is needed - a voltage stabilizer.. What harm does electromagnetic interference cause?

What harm does electromagnetic interference cause?

1. The voltage of short-term pulses is superimposed on the main power signal of the network 220. In this case, an overvoltage may occur at the amplitude point, which can burn through the working insulation layer or damage the electronic component.
2. Extraneous signals penetrating into low-current circuits distort the operation of sound recording or sound reproducing devices, video equipment, television receivers, and expensive digital equipment.
3. Special equipment allows you to gain access to confidential information through electromagnetic noise transmitted along a neutral conductor laid outside the apartment.

To reliably deal with interference, you need to know the features of your home network.

Filter options

Let's look at the main differences to choose the best one:

1. number of connected equipment. The number of sockets is far from the main parameter, since the criterion of the maximum power that the device can withstand (measured in kW) should be taken into account;

filtering of additional lines: telephone, network, television;

maximum freely compensating impulse (measured in kJ). The larger the parameter, the larger the voltage surge will be smoothed out and will not reach the protected device;

wire length. The functionality and performance of the compensator does not depend on it, but it is important to consider in advance what length of cable is needed to connect the devices;

thermal breaker – protection against overheating, very useful for constantly compensating for surges in thermal energy;

power. If it must be possible to connect multiple equipment simultaneously, it is necessary to select a compensator with a rated load current of at least 10A.

pulse interference current or maximum possible current. At an average load it should be in the range of 3.5-10 kA.

Types of stabilizers can be divided according to the level of protection and operating principle:

1. basic - the simplest type of voltage filters, suitable for low-power home appliances;

advanced (medium) - the most popular type, they have some additional functions and sometimes a couple of network protection ports;

professional - expensive filters with maximum protection.

The difference between them is the price: the higher the level, the more complex and expensive the compensation board. Mid-level devices can absorb up to 960 joules, and professional ones - no less than 2500.

However, it is worth considering that the effectiveness of protection strongly depends on the grounding capacity of the outlets. For example, in old houses where there is no grounding in the electrical network or it is poor, pulse stabilization drops tenfold, and sometimes becomes completely useless. That is, they can provide some protection, but there is no need to purchase a professional compensator.

Basic parameters of network filters

Cross-section of supply wires. Most often, a surge filter (Fig. 6) is produced with a core cross-section of about 0.75 or 1 mm2. This cross-section is considered sufficient since the maximum load current for which the filter is designed usually does not exceed 10 A.

A fuse is also installed for this current. If necessary, you can find a surge filter of increased power, the cross-section of the wires of which reaches 1.5 mm2. The fuse for such a device has a rated current of 16 A.

Rice. 6. Typical surge protector socket.

Length of the network supply wire. The standardized length of the filter power cord is 180 cm. For some models it can be 190 cm, 300, or even 500 cm. Number of sockets. Usually there are 4...6 of them (Fig. 7).

As a rule, all sockets have grounding “ears” (Euro type). There are filters with sockets of different types (1 - universal and 4, 5 - “euro”, Fig. 8).

Rice. 7. Set of sockets.

Number and types of fuses. Fuses are included in the network filter to protect against burnout of varistors in the event of large impulse noise and to disconnect consumers in the event of a short circuit or prolonged overload of the load circuits.

For greater reliability, some manufacturers, in addition to thermal fuses, also install self-recovering fast-acting fuses (based on metal-organic semiconductors).

Features of choosing network filters

The first step is to decide what type of surge protector you need. Let's start with the classic models. The simplest one consists of a Euro-plug, an extension cord and a block itself with sockets for Euro-plugs and an on-off button. In this segment, the choice is made according to the following criteria:

• the number of sockets on the block (estimate how many consumers will be simultaneously connected to your surge protector, and leave 1-2 in reserve);
• length of the extension wire (approximately calculate the distance to the place where the device will be installed, and add a few centimeters so that the wire does not run under tension);
• output power (each surge protector has a maximum power that it can withstand; in case it is exceeded, there is a well-thought-out protection system. We do not recommend connecting large consumers like an electric kettle through it, although there are devices for such purposes).

Also recently, surge protectors with USB connectors have been gaining popularity. Nowadays, more and more electrical appliances work through this interface, and the ability to charge your phone with just one cable is also very convenient. In this segment, in addition to the above, several more aspects are added:

• number of Universal Serial Bus slots (similar to sockets - it’s better to have 1-2 spare);
• output current via USB (a very important indicator if you are going to charge the phone using your filter: the higher the current, the faster it is powered).

The best smart surge protectors

Smart surge protectors can be integrated into smart electronic home control systems to make your life easier. They will help you start your air conditioner, humidifier, boiler and other equipment at the right time. Here are the best options available for purchase in the Russian Federation.

Rubetek RE-3310 with Wi-Fi, 3 sockets, 1.8 m, 10A / 2500 W

Rating: 4.9

The category is headed by a network smart filter with Wi-Fi, which supports control of connected devices according to a given scenario. The list of actions can be set for the entire filter or for each socket separately. Thanks to a wireless network, you can turn on sockets remotely, starting the necessary devices at will. The total load on the filter is permissible up to 2.5 kW, so it can even withstand an iron. Three classic sockets and 4 USB are convenient for connecting different gadgets. The PVS wire is very flexible and its length of 1.8 m is often enough to access different consumers without an additional extension cord.

The main feature of the smart network filter is voice control. You can set commands to turn on appliances in the house and it will sequentially start the selected equipment. The network device works with the Rubetek and Yandex Smart Home systems. From the reviews it is clear that pairing is simple and each 220 V socket can be assigned a separate name.

Advantages

• built-in overload and short circuit protection;
• supports voice control;
• each 220 V outlet is assigned a separate name;
• There is a separate application for “manual” control.

Flaws

• USB are all turned on at the same time and cannot be adjusted individually.

HIPER IoT PS34, 3 sockets, s/w, 10A / 2500 W

Rating: 4.8

The global brand Hiper offers a smart network filter with 4 USB and 3 220 V sockets, which works via Wi-Fi via an application. In the settings, you can set a schedule or manually control the voltage supply to each outlet. All sockets have reliable protective shutters and are grounded. The device is designed for a total power of 2500 W, and if it is exceeded, an emergency shutdown will trigger, so there will be no fire. The white switch on the case allows you to mechanically de-energize the filter if necessary or in the event of a hacker breaking into the smart home system.

This is a universal network filter that is compatible with all common smart systems. It can be integrated into Google Home or Yandex Smart Home. If you are just assembling components (peripheral devices), but have not yet decided which system you will use, take this filter - it will fit any.

Advantages

• there is overload protection;
• blocks short circuit;
• universal for connecting to various smart control systems;
• intuitive application.

Flaws

• high price.

DIGMA DiPlug Strip 40, 4 sockets

Rating: 4.7

The category is completed by a smart network filter from Digma, which has four 220 V sockets and 4 for charging various devices via USB. The elongated case can be mounted on the wall using 4 holes in the back cover. Classic white color looks equally good both in the office and at home. The product has a 1 year warranty. The device connects to Wi-Fi and is controlled remotely via an application with intuitive settings.

We have identified this network model as the best in terms of price and quality ratio. It costs 500-1000 rubles cheaper than its competitors, but is in no way inferior in characteristics. Another advantage of the filter is its compatibility with the Mail.ru smart home.

Advantages

• Wi-Fi communication protocol;
• works even with not very common systems;
• 4 USB ports;
• more affordable price.

Flaws

• Doesn't work with Google Home.

What to look for when choosing a surge protector

Let's consider the main parameters of network filters that you should focus on:

1. Network wire length. The most common values ​​are 1.9 and 3.1; in more rare cases, a wire up to 5 meters long is used.
2. The size of the wire cross-section. The best option is 0.75 mm2 or 1 mm2, suitable for a load of 10 amperes, which is what most surge protectors are designed to support.
3. At what current value does the thermal fuse trip? Most manufacturers set the maximum permissible current value to 10A. Depending on the size of the overload and the response time, the fuse may trip at values ​​in the range of 12-16 amperes.
4. How much energy can varistors dissipate without breaking down? In particular, this parameter is affected by the dimensions of the element. The most commonly used varistors are with diameters from 8 to 18 mm.
5. How many fuses are there in the device? In addition to the thermal fuse, a fast-acting fuse based on metal-organic semiconductors can be installed, plus the manufacturer can install a fuse in the neutral circuit.
6. The presence of additional elements of the device, such as an LED indicator that stops working if the safety elements burn out, and a gas discharger. Surge protectors also include USB ports through which you can charge gadgets without using an adapter.
7. The capacity of capacitors that filter the electrical current of the network from interference.
8. The presence or absence of a hanger, usually represented by holes in the surge protector housing.
9. Number of sockets and their type. The number of sockets usually varies from 4 to 6, most often there are 5 places for plugs in the case. In accordance with modern standards, the network uses Euro sockets with grounding. You can purchase models with one universal socket without grounding, in which you can use any plug.

Basic parameters of network filters

What is better: stabilizer or surge protector?

APC surge protectors

8 devices can be connected at a time to this device, which is equipped with protection for a computer network, telephone and video lines, a high-frequency interference filter and a three-meter cord. The APC surge protector has an attractive design. A nice addition to the main product are 3 cords. They are designed to connect to the Internet, telephone and TV. On the case there is a button to turn off the device and indicators showing grounding, connection and the presence of network overloads, next to it there is a communication line protection unit.

The device is thought out to the smallest detail. Wall mounting is possible in any position. There are feet for using it on the floor. Based on the positive reviews from experts, it is clear that this is a unit of the highest standard, capable of satisfying the majority of consumers. All functions declared by the manufacturer are performed with honor. Despite all its advantages, this unit does not have local network grounding. The surge protector, the price of which is higher than that of SVEN Fort Pro, is better in both performance and workmanship. The disadvantages found by consumers include the inconvenience of mounting in a horizontal position.

Design features

The main elements of a modern high-quality surge protector:

• Non-flammable PVC plug. Modern devices use ergonomic plugs of improved design, which ensures easy removal from the socket.
• A wire made of three insulated copper cores in a common sheath. At the point where the wire is connected to the housing, there is an elastic coupling that protects the cable from kinks. Wire length – 1.5, 1.8, 3.0, 4.0, 5.0, 10.0 m.
• Frame. Made from wear-resistant ABS plastic. Available in white, light grey, gray colors. The housing contains interference filtering units, a switch, and a thermal breaker. The outlet openings can be equipped with protective curtains that prevent dirt from getting into them. Safety curtains also prevent small children from touching live parts.

Types of switches:

• Are common. Disconnect all sockets of the device from the power supply at once. This option is most common.
• Individual. Disconnect individual outlets.
• Remote controls. SFs with remote controls are rare and are quite expensive. Convenient for people with limited mobility.

Additionally, the design may contain a light indicator, most often connected to a switch. Indicates whether the device is on or off. Some models are equipped with hinges on the back of the case for wall mounting.

Best Inexpensive Surge Protector with Lead Receptacle

Defender DFS 805

Defender DFS 805

The list deservedly includes a non-standard extension cord, which is also called a 2-story extension cord. There are 5 Slave sockets at the bottom, 1 Master socket, 3 LED indicators and a switch at the top. The device is recommended for connecting a PC and various peripheral devices to the power supply.

The extension cord will be able to guarantee protection from minor changes in the network and various interferences. It is possible to connect equipment with a total power of 2200 W. Fuses turn off the device when this value is exceeded or when there is a voltage drop. Price 2000 rub.

Advantages:

• there is a useful Master-Slave option;
• good security system;
• network cable length 5 m;
• reliability.

Flaws:

• big sizes;
• no protective curtains.

A surge protector is a necessary and useful device that prevents damage to household appliances. Selecting a suitable extension cord is based on studying the basic characteristics. When in doubt, you can seek advice from specialists and read reviews on forums.

The best classic surge protectors

Traditional surge protectors are a simple device consisting of a wire, outlets and a switch. Some models have a power button for each socket, which is convenient when using devices with different operating hours. Experts have selected several reliable devices.

APC by Schneider Electric P43B-RS, 4 sockets 1 m/w

Rating: 4.9

The surge protector from a well-known brand is equipped with four sockets and a meter of wire. At the entrance there is a general switch with LED backlight. The black case is less easily soiled and retains its attractive appearance longer. Grounding will protect the user from electric shock due to a short circuit. There are holes at the bottom of the case for wall mounting. The maximum energy absorption by the filter is possible up to 918 J, which is one of the highest values. In the reviews, buyers are satisfied with the high-quality assembly, durable plastic and rigid fixation of the plug in the surge protector. Owners also note the absence of an unpleasant odor, which usually occurs with similar products from a lower price category.

The classic type surge protector is notable for the presence of durable built-in curtains. They cover openings with current-carrying parts, increasing safety. When the plug is turned on, the user overcomes the resistance with force, and the connector can be inserted with one hand.

Advantages

• light indication on the body;
• compact dimensions 56x40x276 mm;
• not easily soiled color;
• grounding is provided;
• built-in curtains.

Flaws

• The plug is difficult to remove.

Features of choice

The choice of device model depends, first of all, on the buyer, as well as where it will be used, for what purposes and devices.

Home electrical systems don't have huge power surges or high-tech interference. Therefore, it is enough to take medium-type equipment: not too expensive, but not the smallest and cheapest.

Before you buy a surge protector, you need to calculate:

• the number of required sockets and the required power, based on the number of connected devices;
• cable length;
• wishes for filtering additional ports (phone, network).

Photo: additional ports to protect local and telephone networks

When choosing a voltage stabilizer for an office or several powerful equipment (for example, a widescreen TV and a gaming computer), you need to take into account production requirements, such as:

• amount of equipment;
• probability of interference and its power;
• amplitude of voltage surges.

It is not recommended to save on a voltage compensator for the office. Read the review and choose the most suitable model, since one failure can cause a production stop due to the failure of the entire system or lack of access to the server machine.

How to choose a surge protector for a computer and laptop

Many, when purchasing a laptop, all-in-one computer or desktop computer, do not forget to purchase a pilot filter, and do the right thing. Expensive equipment can break down as a result of network surges, so it must be protected from breakage.

When choosing a filter to protect your laptop and computer, you need to look at such primary points as:

• number of sockets,
• wire length,
• presence of a power button and indicator light.

The standard length is 180 cm, but if you wish, you can look for models with a cord of 3 and 5 m. The longer the cord, the more practical it is to use, and in the office it will be more convenient to have a short cord so that it does not get tangled under your feet.

If the length of the wire turns out to be shorter than what the manufacturer stated, the other qualities of the device may also be questioned, and it is better to refuse to purchase this device.

Of course, the device must be powerful, that is, it must be enough for all the devices that you plan to connect to it.

It will be convenient to have an off and on button so that you don’t have to unplug the cord from the outlet every time, especially if it is located in a hard-to-reach place. The light will indicate whether the device is turned on or not.

There should be enough sockets for all devices: router, printer, monitor, scanner, so that you don’t have to purchase additional extension cords that do not serve as a surge protector. Also check the distance between the sockets - it should be enough to conveniently connect several devices at once.

A mount for wires is also useful; it will be useful if there are a lot of wires and you don’t want them to get tangled. This “item” is optional, but will be convenient to use.

It is worth keeping in mind that no network filter will provide complete protection of your computer from network surges. Only an uninterruptible power supply or voltage stabilizer can cope with such a task.

It is important to pay attention to such characteristics as the maximum current - this indicator must be at least 10 A, as well as the energy of the surge - in expensive filters it can reach several thousand J. If you have children, it is worth purchasing models with special curtains

If you have children, it is worth purchasing models with special curtains.

Also, if you plan to mount the device to the wall, immediately purchase a filter with such a mount.

Make sure the filter has a sufficient warranty period. Reliable manufacturers usually provide a guarantee for their products for up to 5 years.

You should not buy cheap devices of dubious manufacture. It’s better to spend money once and buy a high-quality, reliable filter.

VIDEO INSTRUCTION

If you have a laptop

As for laptops, they are equipped with rechargeable batteries that can partially smooth out power surges. But even if you have a battery, it is recommended to purchase a surge protector, since batteries can behave unpredictably.

They especially do not like it when they are not turned off from the network and at the same time turn off the laptop. If you forget or don't want to unplug the plug from the socket every time, use a surge protector.

In order for the surge protector to work properly, no other devices, such as an iron or kettle, should be connected to the device. The outlet must also be grounded. Unfortunately, this is not always the case in older houses.

Do you need a surge protector for your TV?

The question of whether to install a filter for a TV is quite controversial among experts. Many people believe that if the electricity in your home is not turned off, then you can do without this device. But are there many such houses in our country?

After all, even in the capital, power outages are not uncommon. This means that you should take care of purchasing a network noise suppression filter. Uninterruptible power supply will help extend the service life of equipment when turned off and on for an hour.

An inexpensive 250-watt model will be enough to install at home. It is enough for stable operation of a regular 130 Watt TV, taking into account the router and receiver.

The cost of such a device will fluctuate around two thousand rubles, which is much cheaper than repairing equipment in the event of a breakdown. If there are regular problems with electricity in the house, it is worth purchasing a powerful uninterruptible power supply that can work for a long time.

For LCD TVs, it is recommended to install stabilizers selected for the voltage of your particular outlet. As a rule, conventional surge protectors are not able to protect expensive LCD TVs from damage; only stabilizers can do this.

The best manufacturers of network filters

There are quite a lot of developers of this type of product on the market, from popular brands to little-known brands. The rating includes only the highest quality and proven companies, whose products are in deserved demand among consumers. The best manufacturers of surge protectors:

• Sven. A Russian company founded in 1991. It produces speaker systems and computer peripherals. Production facilities are located in China and Taiwan. The company's products belong to the low price category.
• I.E.K. The trademark was registered in 1999, initially producing low-voltage electrical products. Then the company's product range was slightly expanded. At the moment, IEK is considered one of the leading Russian manufacturers of electrical devices.
• Power Cube. The company was registered in the Russian Federation in 1999. Today the company is a full-cycle production holding. It produces various surge protectors, extension cords, PVA wires, speaker cables, cords, etc.
• Defender. A Russian brand that produces peripheral devices and accessories for computers. The company was founded in 1990. The company's products are manufactured at high-tech factories in Europe and Asia.
• Buro. The company has been on the Russian market for over 10 years. The products of the manufacturer in question include accessories, office equipment and stationery. The range of products is regularly updated and growing. The products are distinguished by an ideal price-quality ratio.
• APC. An American brand that is best known as a manufacturer of uninterruptible power supplies. In 2006, the company was absorbed by the Schneider Electric brand, leaving its brand unchanged.
• Schneider Electric. A French power engineering brand that produces equipment for the energy subcomplexes of industrial institutions, civil and residential construction sites, and data centers.
• Rubetek. A Russian manufacturer that is developing in various areas of its own activities. This applies to the production of electrical equipment, various “smart” devices and home control systems. A characteristic feature of the brand will be its technological effectiveness.
• ERA. A Russian manufacturer that produces lighting and electrical goods for everyday life, office space and industrial facilities. The trademark was created over 15 years ago. Today it occupies a strong position in the market. The company's product range is regularly updated with various technological innovations. In addition, the company is upgrading older models of devices.
• Rombica. A high-tech innovative brand from China that specializes in creating information transmission devices, as well as power and charging equipment.

Surge filters are in great demand among consumers today. They are devices consisting of several sockets. The best models can withstand high levels of electricity consumption and protect equipment from various surges in the network. Before purchasing a surge protector, it is imperative to focus on the maximum load for which the device is designed. In addition, you need to take into account the number of devices that the product serves. After this, you need to evaluate the functionality of the model: its distinctive options, the position of sockets, unique properties, etc. To make the right choice, a top list of the best surge protectors was compiled, which included the best devices.

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