Automation with electromagnet rozchipluvache. Electromagnetic rozchipluvach av

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The main recognition of automatic hums is the sing of them as zahisnih devices in the form of strums of short strums and strums of revantation. The most important drink is the modular automatic vimikachi of the BA series. At this article it is clear series VA47-29 of firm ІК.

Zavdyaki compact vikonannya (unification of the width of the modules), ease of installation (mounted on DIN-rails for the help of special zasuvok) and service stench are widely vikoristovuyutsya in butovyh and industrial minds.

Most of the time, it automatically stops in the gaps due to small fluctuations in the operating mode and a short chime. The body of the automatic chiming machine is made of dielectric material, which allows you to install yoga in the most accessible places.

Powering automatic vimics and the principles of their work are similar, vіdmіnnostі polagayut, and it's important that the materials of the components have such a folding quality. Serious vicarious vicarious growers are less likely to be electrically technical materials (copper, bronze, silver), but they are also mixed with component materials and have “lighter” characteristics.

The simplest way to make an original from a piece is the price of that bag: the original cannot be cheap and easy for the obviousness of the midi components. The amount of branded automatic machines is assigned to the model and can be lighter than 100 - 150 rubles.

Structurally, the modular automatic chiming of a straight-cut body, which is made up of two creased halves between them. Yoga is written on the front side of the machine technical characteristics that handle is ripped for manual chiselling.

Yak vlashtovanny automatic vimikach - the main working organs of the machine

If you need to disassemble the case (for which it is necessary to twist the halves of the rivet in order to fasten it), then you can work that otrimati access to all yoga components. Let's look at the most important ones, which will ensure the normal functioning of the building.

1. Top terminal for connection;
2. Neruhomy power contact;
3. Ruhlivy power contact;
4. Arc chamber;
5. Gnuchkiy conductor;
6. Electromagnetic rozchipluvach(coil with core);
7. Handle for curing;
8. Thermal expansion valve (bimetal plate);
9. Adjustment screw thermal splitter;
10. Bottom terminal for connection;
11. Opening for the exit of gases (as they are settled under the hour of the mountain of the arc).

Electromagnetic rozchipluvach

Functional recognition of an electromagnetic rozchipluvach - ensuring a practical mitt automatic vimicach when blamed in the lance, which is protected by a short chime. In this situation, electric lances are blamed for streaks, the value of which a thousand times exceeds the nominal value of the parameter.

The hour of spratsovuvannya of the automaton is assigned to its chaskovy characteristics (delay to the hour of spratsovuvannya of the automaton depending on the size of the stream), which are indicated by indices A, or C (the widest).

The type of characteristics of the values of the parameters of the nominal stream on the body of the machine, for example, C16. To guide the parameters in the hour of spratsovuvannya to be in the range of hundreds to thousandths of a second.

The design of the electromagnetic rozchipluvach є solenoid with a springy core, which is tied to a ruhomy power contact.

Electrically, the solenoid coil is connected sequentially to the lance, which is made up of power contacts and a thermal switch. When the automatic device is on and the nominal value of the jet passes through the solenoid coil, however, the magnitude of the magnetic flux is small for the core to be drawn in. The power contacts are closed and therefore ensure the normal functioning of the installation, which is protected.

With a short zamikannі zbіlshennya zbіlshennya struma in the solenoidі bring to a proportional increase in the magnetic flux, zdatny podolat dіyu spring and move the core and povyazaniya with him ruhomy contact. The movement of the core causes the breaking of power contacts and the flickering of the line, which is being protected.

Thermal expansion valve

The thermal rozchіpluvach vikonuє funktіyu zakhistu with a small, almond stretch of a trivial interval of an hour, exceeding the allowable value of the struma.

Thermal sprayer - sprayer of improved air, wine does not react to short-hour shots of strum. The hour of spratsovuvannya of this type of zakhist is also regulated by hour-strum characteristics.

The inertia of the thermal expansion allows the implementation of the function of protection against revantation. Structurally, a thermal splitter is a cantilevered bimetal plate fixed in the case, which is a strong point through the important interaction with the splitting mechanism.

The electrically bimetal plate is sequentially connected to the coil of the electromagnet riveter. When the machine is turned on, a strum runs through the last lance, heating the bimetal plate. It is necessary to bring to the moving of the її free kintsya at an uninterrupted closeness to the important mechanism of splitting.

When reaching the value of the strum, assigned to the timchas-strum characteristics, and after the end of the singing hour, the plate heats up, contacts with the strum. The rest, through the mechanism of splitting, breaks the power contacts - the mesh appears to be protected from the attack.

The adjustment of the struma of the spratsovuvannya of the thermal expansion for the additional screw 9 is carried out at the selection process. Since the majority of automatic modules and their mechanisms are soldered in cases, a simple electrician has no ability to perform such regulation.

Power contacts and arc chamber

The opening of power contacts during the passage of a struma through them is carried out until the electric arc is broken. The tightness of the arc is proportional to the struma in the lance, which is commingled. The tighter the arc, the stronger the ruining power contacts, the plastic parts of the body.

AT attachment of automatic vimicach arc-extinguishing chamber between the electric arc at the local connection. It is located in the zone of power contacts and vikonan from the middle of the parallel plates.

At the chamber, the arc breaks up into small parts, trapping on the plate, reaching for its own foundation. Gases, which are seen at the mountain arcs, come out through the doors in the days of the chamber and the body of the machine.

Attachment of automatic vimikacha and the design of the arc chamber is designed to connect the upper non-violent power contacts.

Similar materials on the site:

It's not a secret for anyone that automatic switches are not just circuit breakers, they let through a working stream and provide two stages of an electric stake: short circuits and openings. The automatic vimikach is an electric device, which in the real time mode “reveals” the strum stream, which flows into the lancet, which is protected, and turns it on when the strum is overwhelmed by the singing value.

The most wide-ranging applications in automatic blowers are a combination of thermal and electromagnetic blowers. The very two kinds of rozchіpluvachіv zabezpechuyut the main protection of the lanceugs from the superstrate.

Thermal expansion valve appointments for switching on the streams of the electric stake. The thermal expansion valve is structurally composed of two metal balls, which allow different coefficients of linear expansion. This allows the plate to bend when heated and pour into the mechanism of free opening, closing, turning on the apparatus. Such a cutter is also called a thermo-metal cutter after the name of the main element – a bimetal plate.

However, this type of rozchіpluvach maє suttєviy nedolіk - yogo power lie in temperature dovkilla. Therefore, due to the low temperature, it will be overwhelmed to turn on the lancet - the thermal switch of the automatic switch may not turn on the line. The situation is possible and reversible: in even speky weather, an automatic switch can turn on the line, which is being protected, for heating the bimetal plate with a hot middle. Until then, the thermal rozchiplyuvach saves electrical energy.

Electromagnetic rozchipluvach it is made up of coils of a crumbly steel core, which is trimmed with a spring. When the given value of the struma is exceeded, according to the law of electromagnetic induction, an electromagnetic field is induced in the coil, whereby the core is drawn into the middle of the coil, supporting the spring, and the mechanism of splitting is activated. In the normal mode of operation, an electromagnetic field is also induced in the coil, the proteo force does not rise, so that the spring support is adjusted and the core is retracted.

Attachment to the mechanism of the electromagnetic blower is shown on the buttstock AP50B

This type of blower does not have such a great supply of electrical energy, like a thermal blower.

In Denmark, the wide-width nabula electronic rozchipluvachі on the basis of microcontrollers. With these additional help, you can more accurately adjust the offensive parameters of the attack:

rіven worker strumu zakhistu
hour of zahistu vіd vantage
an hour of training in the navigation zone with the function of "thermal memory" and without it
strum selective vision
hour of selective streaming

The function of carrying out self-testing of the process to the mechanism of free uncoupling for the help of the TEST button is implemented, allowing the device to be retested.

The regulation of the parameters of the adjustment of the electric lance on the front panel of the annex allows the personnel to gain an understanding without the need to know how to adjust the lines to enter.

Behind the help of rotary jumpers on the front panel, the rhine of the working struma of the lansyug is installed. regulation settings of the working jet blower IR set to multiplicity: 0.4; 0.45; 0.5; 0.56; 0.63; 0.7; 0.8; 0.9; 0.95; 1.0 to nominal vimikacha strumu.

There are two modes of operation of the navprovidnikovogo rozchiplyuvach when rewiring the electric lance:

s "thermal memory";
without "thermal memory"

"Thermal memory" for the emulation of the robotic thermal expansion valve (bimetal plate): the microprocessor-based expansion valve programmatically sets the hour, which is needed for the cooling of the bimetal plate. This function allows the possession of that language, which is being protected, more than an hour to reach and, obviously, their term of service is not reduced.

One of the problems is the installation of a equal strum and the time of automatic wiping with a short fading, which requires the need for selectivity to strike. It is necessary for the automatic switch to turn on later, lower than the nearest device. It is important to note that, for the purpose of the thermal expansion valve, the hourly settings in the microprocessor expansion device do not change when the temperature of the hot medium changes.

Adjustment of the strum setting of the selective strum output be selected in multiples of the working strum I R: 1.5; 2; 3; 4; 5; 6; 7; eight; nine; ten.

Adjustment of the time setting of the selective jet output selectable in seconds: 0 (without displaying the hour); 0.1; 0.15; 0.2; 0.25; 0.3; 0.35; 0.4.

The electromagnetism of microprocessor switches in automatic switches OptiMat D allows switching devices in industrial electrical installations. In its own line of electromagnetic fields, created by the elements of a microprocessor-based splitter, do not put a negative pressure on the necessary equipment.

Let's take a look at the selection of settings from the butt of the microprocessor splitter MR1-D250 of the automatic vimikach OptiMat D. Asynchronous motor AIR250S2 with parameters Р=75 kW; cosφ=0.9; Ip/Inom=7.5; for which it is necessary to select the settings of the protecting device (automatic vimikach protects without a middle line with an electric motor). Accept this mind: the start of the electric motor is easy and the hour of start-up is 2 s.

We select for our engine a setting of 4 seconds with the thermal memory function:

In our case, the nominal strum of the electric motor should be set to 126.6 A. It is obvious, it is possible to switch the regulation of the nominal strum of the vimikach to a value of 0.56, so that the closest value was 140 A.

In order for the automatic switch to not work automatically in the form of starting strums, the multiplicity of which for the reversed engine should be set to 7.5, the setting of the selective strum output should be equal to 8.

Oskіlki tsey vimikach will be installed without intermediary for zahistu elektrodvigun to ensure selectivity in diї vimikachіv priymaєmo mittve selective strumové vіdsіchennya (without vitrimka for an hour).

It also means that when the strum is overwhelmed by a short flicker, the value is 3000.

In this rank, we looked at the butt of the choice of settings of the microprocessor rozchіpluvach, yakі asynchronous motor. This butt for choosing the settings of a microprocessor switch is not a technical help. In the final view, the panel for adjusting the microprocessor splitter of the automatic vimikach looks like this:

Electromagnetism, which supports GOST R 50030.2-2010, that ability to be introduced into the automation system to work automatically more powerfully, more powerfully and visually with better solutions for bagatma displays.

Thermal expansion valve- Zabezpechuє zahist tіlki vіd perevantazhen on strum.

Electromagnetic rozchipluvach- Be sure to protect only a few short chimes.

Thermomagnetny (magnetothermic, combinations) expansion- consists of two types of expansion - thermal and electromagnetic. Be sure to protect yourself from re-wandering along the stream and from short chimes.

Thermo-magnetic (magnetothermic, combinations) rozchіplyuvach, from zakhisty vіd strumіv vіtokіv- the crime of protection against overshooting and short chimes will secure the protection of people and electrical installations against the ground.

Electronic dispenser(Electronic block zakhistu - Overcurrent Release) - (deposit from vikonannya) ensures the maximum number of types of zakhistu.

Vlastuvannya rozchepluvachіv

Thermal expansion valve

Thermal splitting with a bimetal plate, as when heated, it bends and flows into the mechanism of free splitting. The bimetal plate is prepared by the method of mechanical closing of two metal lines. Two materials are selected with different coefficients of temperature expansion, and they join together for additional soldering, riveting or zavaryuyutsya.

Advantages:

there are no loose elements;
unsightly to the point of confusion;
simplicity of construction;
low price.

Noodles:

high energy saving;
sensitive to changes in dowkill temperature;
when heated from third-party heaters, they can call for a pardon.

Electromagnetic rozchipluvach

Electromagnetic rozchipluvach є we will attach a mitteva dії. With a solenoid, the core of which is poured onto the mechanism of free splitting. When passing through the winding of the solenoid over the jet, a magnetic field is created, as if moving the core, from the underside of the support of the rotary spring.

I eat rozchіpluvach can nalashtovuvatisya (at the factory with a vibrator or spozhivachem) for spratsovuvannya with strums short circuit values vіd 2 to 20 In. Adjustment deviation varies close to ±20% of the specified value of the strum force for vimics in a molded case.
For power-operated automatic switches, the setting of the spratsovuvannya in case of a short flicker (the value of the strum, when the opening is initiated) can be set to the values in amperes, and in multiples of the nominal strum.
Adjusted settings: 3.5 In; 7In, 10In; 12In and others.

Advantages:

simplicity of construction;

Noodles:

I create a magnetic field.

Thermomagnetic splitter

Often zastosovuetsya last day thermal and electromagnetic expansion. Fallow in the form of a picker, the connection of two outbuildings is called a combination or a thermomagnetic splitter.

Thermomagnetic or combinations of rozchіpluvach

Thermomagnetic rozchіpluvach іz zahistom vіd strumіv vіtokіv

An automatic machine with given rozchіplyuvachami krіm thermal and electromagnetic rozchіplyuvachіv mає block zdatny vyaviviti strum poshkodzhennya to the ground for the help of a toroidal transformer, which smelt all the strum-carrying parts, as well as neutral, as if it was split. Roofing strums on the ground can be used with an automatic switch to ensure two main functions in one extension:

zahist vіd revantazhen that short chimes;
zahist vіd indirect dotics(Appearance of tension) on the stream-conducting parts due to poor insulation).

Electronic dispenser

Розчіплювач, з'єднаний з вимірювальними трансформаторами струму (три або чотири, залежно від кількості провідників, що захищаються), які встановлені всередині автоматичного вимикача і забезпечують подвійну функцію: подачі живлення для нормального управління розчіплювачем і виявлення значення струму, який проходить у струмопровідних частинах. Therefore, the stink of the sum is less with the chains of the snake strum.

The signal from the transformer is processed by an electronic part (microprocessor), which is similar to the given settings. If the signal exceeds the threshold, the opening of the automatic vimikach pours in without interruption on the vuzol of the free opening of the vimikacha for the help of the cat, which turns on.

The control block of opening allows you to vibudovuvat sevnu koristuvachnym program, for which automatic vimikach viroblyatme opening of the head contacts.

Advantages:

rіznomanіtny vybіr nalashtuvan koristuvachiv;
high accuracy of the given program;
indicators of practicality and reasons for spratsovuvannya;
logical selectivity with higher and lower vimics.

high price;
crying block keruvannya;
shillnіst to the influx of electromagnetic fields.

The main recognition of automatic humming is the chanting of їх as zahisnі devices in the form of strums of short strums and strums of shifting. The most important drink is the modular automatic vimikachi of the BA series. At the article, we can see the attachment of an automatic vimikacha of the BA47-29 series of the company iek.

Attachment of automatic vibrations and the principles of their work are similar, vіdmіnnostі polagayut, and tse importantly, in the materials of the components such a quality of choice. Serious vicarious vicarious growers are less likely to be electrically technical materials (copper, bronze, silver), but they are also mixed with component materials and have “lighter” characteristics.

The simplest way to make the original from the delivery is the price of the car: the original cannot be cheap and easy for the obviousness of the midi components. Vaga branded automatic machines are assigned to the model and can be lighter than 100 - 150 rubles.

Structurally, the modular automatic chiming of a straight-cut body, which is made up of two creased halves between them. On the front side of the machine, there are technical specifications and a handle for manual carving.

How is the power automatic vimikach - the main working organs of the machine?

If you disassemble the body (for which it is necessary to twist the halves of the rivet), then you can add an attachment to the automatic switch and gain access to all components. Let's look at the most important ones, which will ensure the normal functioning of the building.

1. Top terminal for connection;

2.Nerukhomiy power contact;

3.Rukhomiy power contact;

4. Arc chamber;

5. Gnuchkiy conductor;

6. Electromagnetic rozchipluvach (coil with a core);

7. Handle for carving;

8. Thermal expansion (bimetal plate);

9. Screw for adjusting the thermal expansion valve;

10. Bottom terminal for connection;

11. Opening for the exit of gases (as they are settled at the mountain of the arc).

Electromagnetic rozchipluvach

The functional recognition of the electromagnetic rozchiplyuvach is the safety of the practically mittevuvannya of the automatic vimikacha when a short flicker is blamed in the lancet, which is protected. In this situation, electric lances are blamed for streaks, the value of which a thousand times exceeds the nominal value of the parameter.

The design of the electromagnetic rozchipluvach є solenoid with a springy core, which is tied to a ruhomy power contact.

Electrically, the solenoid coil is connected sequentially to the lance, which is made up of power contacts and a thermal switch.

When the automatic device is on and the nominal value of the jet passes through the solenoid coil, however, the magnitude of the magnetic flux is small for the core to be drawn in. The power contacts are closed and therefore ensure the normal functioning of the installation, which is protected.

Thermal expansion valve

The thermal rozchіpluvach vikonuє funktіyu zakhistu with a small, almond stretch of a trivial interval of an hour, exceeding the allowable value of the struma.

Thermal rozchіpluvach - razchіpluvach upovіlnenoї dії, vіn does not react to short-hour throws of strum. The hour of spratsovuvannya of this type of zakhist is also regulated by hour-strum characteristics.

Power contacts and arc chamber

At the extension of the automatic vimikacha, an arc-extinguishing chamber is located between the electric arcs in the local connection. It is located in the zone of power contacts and vikonan from the middle of the parallel plates.

The attachment of the automatic switch and the design of the arc chamber cause the connection of life on the upper non-violent power contacts.

The principle of robotic automatic vimikacha

For the zahistu pobutovih electric lancers sound vikoristovuyutsya automatic vimikachi modular design. Compactness, ease of installation and replacement, at the time of consumption, explaining their wide width.

Zovni is such an automatic machine with a body made of heat-resistant plastic. On the front surface, there is a handle for switching on and off, on the rear there is a latch-fastener for mounting on DIN rails, and on the bottom of the beast there is a screw clamp. In the article, we can see the principle of a robotic automatic vimikacha.

How does an automatic vimic work?

In the regular operation mode, a strum flows through the machine, which is smaller or equal to the nominal value. The pressure of life in the outer line is applied to the upper terminal, which is connected with an unbreakable contact. From the non-violent contact of the strum, it is necessary to close the ruhomy contact to it, and see it through the flexible middle conductor- On the solenoid coil. After the solenoid, the strum is fed to a thermal expansion valve, and after a new one - to the lower terminal, connected to an unimaginable amount of pressure.

In emergency modes, the automatic switch turns on the lance, which is protected by the trigger of the free opening mechanism, which is driven by a thermal or electromagnetic opening. The reason for this spratsovuvannya є revantazhennya or short chirp.

Thermal expansion - a bimetal plate that is made up of two balls of alloys with different coefficients of thermal expansion. When passing through an electric jet, the plate heats up and bends at the ball with a smaller thermal expansion coefficient. When the predetermined value of the strum force is exceeded, the blade reaches a value sufficient to bring the splitting mechanism into operation, and the lancet opens up, influencing the attack that is protected.

The electro-magnetic switch is made up of a solenoid with a crumbling steel core, which is pressed down by a spring. When the given value of the struma is exceeded, according to the law of electromagnetic induction, an electromagnetic field is induced in the coil, for which the core is drawn into the middle of the solenoid coil, supporting the spring, and the opening mechanism is activated. In normal operation, a magnetic field is also induced in the coil, but there is not enough power to fix the spring support and retract the core.

How does the machine work in the mode of advancing

The changeover mode is blamed, if the strum is connected to the lancet machine, it changes the nominal value, as if the auto-wimikach is re-insurance. With any movement of the strum, as it passes through the thermal opening, it causes a temperature increase in the bimetal plate and, apparently, the increase is increased right up to the activation of the opening mechanism. The automatic machine wiggles and rozmikaє lansyug.

Spratsovuvannya thermal zakhistu is not expected to be mittevo, shards on the grouting of a bimetal plate are needed for an hour. This hour can change in the fallow period depending on the value of the overshoot of the nominal value of the strumu in tens of seconds to a year.

Such a blockage allows you to turn on the liveliness in case of fluctuations and non-trivial movements of the strum in the lance (for example, when the electric motors are turned on, like a great launch of the strum).

The minimum value of the struma, in case of which one is guilty of maintaining a thermal sprayer, is installed for additional gvint at the virobnik factory. Call the value at 1.13-1.45 times change the denomination, the values on the marking of the machine.

By the size of the struma, in which the thermal shock is applied, the temperature of the dovkil is poured in. In a sintered application, a bimetal plate warms up and bends to spratsovuvannya with a smaller struma. And in applications with low temperatures, the strum, with which the thermal expansion can be used, may appear more acceptable.

The reason for the overwhelm of the line is the connection to it, the total tightness of them outweighs the tightness of the line, which is being protected. One hour off different types pushing by-button technology(air conditioner, electric stove, right dishwasher, Praska, electric kettle, etc.) - as a whole, you can bring to the production of a thermal heater.

You have to know your way, you can turn it on as a helper. Do not hurry up again to switch the machine. All the same, you can’t call Yogo in a working position, the docks of the wines are not cool, and the bimetal plate of the rosemary does not turn around at its own camp. Now you know how to use the automatic switchover time

How to operate the machine in the short circuit mode

At the time of a short hum, the principle of a robotic automatic vimikacha is different. With a short zamikanny strum in the lance, it sharply and bagatorizovo grows to a value, building wiring will melt, or rather, the insulation of electrical wiring. In order to avoid such a development of the undergrowth, it is necessary to pick up the lancet. Electromagnetic rozchipluvach itself so і spratsovuє.

The electromagnet rozchipluvach is a solenoid coil, in the middle of a steel core, which is fixed at the fixed position by a spring.

The bagatorase growth of the struma in the coil of the solenoid, which, when short-circuited in the lance, is brought to a proportional increase in the magnetic flux, under which the core is drawn into the coil of the solenoid, pushing the springs, and pressing on the bar of the descent of the mechanism. The power contacts of the machine open, interrupting life emergency plot lanceugs.

In this way, the spratsovuvannya of the electromagnetic rozchipluvach protects against fire and the destruction of the electrical wiring, which by closing the electrical appliance and the automatic machine itself. The hour of yoga spacing becomes close to 0.02 seconds, and the electrical wiring does not reach unsafe temperatures.

At the moment of opening the power contacts of the machine, if a great strum passes from them, an electric arc emerges from them, the temperature of which can reach 3000 degrees.

In order to protect the contacts and other details of the machine from the ruinous arc, the arc-extinguishing chamber was transferred to the design of the machine. Arc-fired chamber with a grate with a set of metal plates, yakі insulated one from one.

The arc is twisted in the mist of the contact, and then one of them collapses at once with a fragile contact, and the other one forges the back of the hand along an unbreakable contact, and then along the conductor behind it, which leads to the rear wall of the arc chamber.

There, it will divide (crush) on the plates of the arc chamber, weakening and extinguishing. At the lower part of the transfer machine, special doors are opened for the introduction of gases, which are established at the hour of the fire.

Once the machine is switched on when the electromagnetic switch is activated, you will not be able to fuss with electricity until the feast is quiet, until you know and find out the reason for the short chime. The most important reason is the failure of one of the survivors.

Vimknіt usі spozhivachі and try to increase the machine. If it didn’t work for you and the machine gun didn’t ring, it means that it’s true - the wine is one of the guardians and you have lost your self. As soon as the machine is turned on and the switches are turned on again, it means that everything is more folded, and we can rightly test the insulation of the wiring. Get shukati, de tse happened.

The axis is such a principle of robotic automatic vimikacha for the minds of various emergency situations.

Since the automatic vimikach has become a constant problem for you, do not bother yourself with the installation of an automatic machine with a great nominal stream.

The machines are installed to fix your wiring, and, therefore, a larger strum at the fence is simply not allowed. It is possible to know the solution to the problem only after the complete supply of electricity to your settlement by professionals.

Criteria for the selection of automatic vimics

The main indications for yaks are used when choosing automatic devices:

Number of poles;

Rated voltage;

Maximum working strum;

Vidklyuchayucha zdatnіst (strum short zamikannya).

Number of poles

The number of poles of the machine is determined by the middle of the phases of the mesh. For installation in single-phase mesh vikoristovuyut unipolar or bipolar. For three-phase mesh zastosovuyt three- and chotiripoleusnі (merezhі іz system of grounding neutral TN-S). At the per-butov sectors, sound the vicorist one-or two-pole automatics.

Rated voltage

The rated voltage of the machine is the same voltage, for which the machine itself is repaid. Independently from the place of installation, the voltage of the machine is due to equal or great rated voltage merezhі:

Max working strum

Maximum working strum. The choice of automatic machines according to the maximum working stream is determined by the fact that the nominal stream of the machine (the nominal stream of the blower) will be greater or greater than the maximum operating (rozrahunk) current, which can easily pass through the distance of the lancet, which is protected, with the help of the changes:

To find out about the maximum working strum for a small house (for example, for an apartment), you need to know the total pressure. For whom it is possible to tighten all the accessories, they will be connected through a given automatic machine (refrigerator, TV set, sv-pich too). The size of the struma from the omitted tension can be known in two ways: by the method of setting or by the formula.

For a measure of 220 with a voltage of 1 kW, the strum becomes 5 A. For a measure with a voltage of 380 V, the value of the strum for 1 kW of tension becomes 3 A. For the help of this option, you can know the strum through the tension. For example, the total power at the apartment was 4.6 kW, the strum at this cost was approximately 23 A. For a more accurate value, the strum can be accelerated using the following formula:

For pobutovyh elektroprilad_v.

Vimikayucha building

Vimikayucha building. The choice of the machine according to the nominal strum is turned on before the strum is any machine building the turn on more struma short flicker at the point of installation of the device: some kind of automatic switch-on at rated voltage.

When choosing automatics for the industrial recognition, they are additionally converted to:

Electrodynamic durability:

Thermal stability:

Automatic switches are issued with the following rating scale: 4, 6, 10, 16, 25, 32, 40, 63, 100 and 160 A.

In residential sectors (houses, apartments), as a rule, two-pole automatic devices are installed with a nominal value of 16 or 25 A and a 3 kA switch-on strum.

What is the hour of strum and characteristics of automatic vimics

During normal operation, electrical connections and all accessories flow through the automatic switch electric strum. However, as the power of the strum, for some reason or other, outweighed the nominal value, the lancet rose through the spratsyuvannya of the automatic vimikach.

Characteristics of the automatic vimikacha spratsovuvannya є even important characteristic, as they describe how much time the automatic machine spratsovuvannya lie in vіd vіdnoshennia strum, which flows through the vending machine, to the nominal strumu of the machine.

Tsya characteristic is foldable because її vyslovlyuvannya nebhіdne vykoristannya graphіkіv. Automatic machines with one and the same denomination will be in case of different shifts of the strum in a different way, they will be switched off depending on the type of curve of the machine (this is how the strum characteristic is called), why is it possible to zastosovuvat automatically with a different characteristic different types vanity.

Tim himself, from one side, the strum function is working, from the other side, it is safe minimum quantity hibnih spratsovuvan - for whom the importance of given characteristics.

There are situations in energy galuzias, if a short-term increase in struma is not caused by the appearance of an emergency regime, and the defender is not guilty of reacting to such changes. Tse itself costs and avtomativ.

When such a dvigun is turned on, for example, a country pump or a pilosos, in the line it is possible to finish a great throw of the strum, which in a sprat once outweighs the normal one.

Behind the logic of a robot, an automatic machine, obviously, it can turn on. For example, the engine runs at 12 A in the starting mode, and 5 A in the working mode. What is it like to work in such a time? If you put it on 16 A, then it’s unreasonable to turn it on or jam the motor or short the cable.

It would be possible to solve this problem, as if to put it on a smaller strum, or else to spratsovuvatime in the face of any kind of rush. The axis for this and that was invented so clear for the machine, like this is the hour of the strum characteristic.

Yakі іsnuyet h strumovі characteristics of automatic vimikaіv and їх vіdmіnіstі vіzh themselves

As seen by the main organs of spratsovuvannya automatic vimikacha є thermal and electromagnetic rozchipluvach.

The thermal expansion valve is a plate with a bimetal, which bends when heated by a jet, which flows through. Tim himself at the diyu to induce the mechanism of splitting, with a trivial effort of spratsovuchi, from the back-and-forth vitreous hour. Heating of a bimetal plate that hour spratsovuvannya rozchіpluvach without intermediary lie down in the vіd vіvnya navantazhennya.

Електромагнітний розчіплювач є соленоїдом із сердечником, магнітне поле соленоїда при певному струмі втягує сердечник, що приводить у дію механізм розчеплення - відбувається миттєве спрацьовування при КЗ, завдяки чому постраждала ділянка мережі не чекатиме прогрівання теплового розчіплювача (біметалічної пластини) в автоматі.

The time of the spratsovuvannya of the machine against the force of the strum, which flows through the machine, is still marked by the time of the strum characteristic of the automatic vimikach.

Chantly, having marked the images of the Latin letters B, C, D on the cases of modular automatic machines. So stinks characterize the multiplicity of the setting of the electromagnetic switch to the nominal value of the machine, indicating one hour of the strum characteristic.

Qi letters indicate the strum of a special spratsovuvannya of an electromagnetic splitting machine. It seems simpler, the characteristic of the automatic vimikach's spratsovuvannya shows the sensitivity of the machine - the smallest strum, when the machine turns on automatically.

Automatically calculate a piece of characteristics, the widest of which are:

B - vіd 3 to 5 × In;

C - vіd 5 to 10 × In;

D - type 10 to 20 × In.

What do the numbers indicated above mean?

I'll give you a small example. Admissible, є two automatics of the same tension (equal for the nominal strum) but the characteristics of the spratsovuvannya (Latin letters on the automatics) are different: automatics B16 and C16.

The range of operation of the electro-magnetic blower for B16 is 16 * (3 ... 5) = 48 ... 80A. For C16, the range of strums of the mitteva is 16 * (5 ... 10) \u003d 80 ... 160A.

At a stream of 100 A, the B16 machine will turn on even more mittevoly, but C16 will not turn on immediately after a few seconds of thermal protection (after that, the bimetal plate will heat up).

In residential houses and apartments, the deactivation is purely active (without great starting streams), and if the exhaust motors are turned on infrequently, the most sensitive and shortest to zastosuvannya є automatic with characteristic B. Today, characteristic C has also been expanded, as it is also possible to win for living ones. administrative budіvel.

As far as characteristics D are concerned, then it is suitable for life, whether it be electric motors, great engines and other outbuildings, which can be used with their large starting jets turned on. Also, due to the reduced sensitivity in case of short circuit, automation with characteristic D can be recommended for selection as an entry for increasing the chances of selectivity with group AB in case of short circuit, which should be lower.

What is protecting the automatic vimic

The first one picks up the automatic machine, the varto rozіbratisya, how it works and what it protects. A lot of people vvazhayut that the machine is protecting buttovі attach. However, that is absolutely not the case. There is no way for the machine to get to the fittings, so you connect to the yard - they protect the electrical wiring from the supply.

Even if the cable is overwhelmed, or due to a short flicker, the growing power of the strum, which causes the cable to overheat and wind up the wiring.

The strength of the struma increases especially with a short chime. The magnitude of the struma power can be up to a few thousand amperes. Obviously, no cable is built for a long time to be worn for such an adventure. Tim more, cable with a span of 2.5 square meters. mm, which is often used for laying electrical wiring in private households and apartments. Vin just catch fire, like Bengal fire. And if a fire strikes the host, I can cause it to burn.

To this, the correct rozrahunok of the automatic vimikacha plays a great role. A similar situation is blamed for the rewiring - the automatic vimikach protects the electrical wiring itself.

If the tension exceeds the permissible value, the strength of the struma increases sharply, which will cause the insulation to heat up and melt. Have your own heart, you can bring it to a short zamikannya. And the consequences of such a situation are rebuffed - it’s like a fire that burns!

Behind some streaks, the roaring of automatic machines vibrates

The function of the automatic switcher helps protect the electrical wiring, connected after that. The main parameter, which oscillates the automatic opening, is the nominal stream. Ale nominal strum of what, navantazhennya chi drot?

Vihodyachi z vimog pue 3.1.4, the settings of the automatic streaks, which serve for the protection of other streaks, are selected according to the possibility of less than the strums of the streaks of these streaks, or after the nominal strum of the primach.

The breakdown of the machine for the pressure (according to the nominal stream of the electric receiver) vibrates, as if it were blowing on all roads on all the lines of the electrical wiring of the breakdown on such a charge. Tobto admissible strum of electrical wiring is greater for the nominal value of the machine.

For example, on a dealership, de vikoristovuєtsya is carried out with a peretina of 1 sq. mm, the value of the voltage becomes 10 kW. We select an automatic machine according to the nominal charge stream - we install an automatic machine for 40 A. What will happen to which one? Conducted later heating and melting, shards of veins of insurance for a nominal strum of 10-12 amperes, and a strum of 40 amperes passes through it. The machine turns on less often, if it becomes a short chime. As a result, you can get out of tune with the wiring and start to get out of the way.

Therefore, the initial value for the choice of the nominal strum of the machine is the cut of the strum duct. The value of the profit is only guaranteed after the choice of the cross dart. Rated strum, automatic indication, is to be blamed for the maximum strum allowed for this cut.

In this rank, the choice of the machine to roam for the minimum cut of the dart, which wins at the conductor.

For example, a valid strum for honey dart peretina 1.5 sq. mm become 19 amperes. It means that for this drotu it is possible to choose the closest value of the nominal strum of the machine for a smaller bill, which is to become 16 amperes. If you select an automatic machine with a value of 25 amperes, then the wiring will be heated, the wires of this wire are not intended for such a stream. In order to properly raise the rozrahunok of the automatic vimikacha, it is necessary to secure the perch of the dart in the first line.