What is a difavtomat, now it’s zastosovuyut, how to connect

Zі statti vіznaєtesya, scho such a difavtomat i for what zastosovuyut, yakі buvayut, pristriy і principle dії pristroy, principle scheme, deciphering the designation on the body, how to connect.

Bezpeka - all important

Under the hour of designing and laying a low-voltage electric line one of the main tasks for fakhivtsiv є protection for short circuits and ensuring the maximum level of safety.

For її vyshennya zastosovuyutsya special attachments, one of them is a differential automatic machine (difavtomat).

Let's take a look at the food below:

• What is virib?
• Navіscho zastosovuyut, and yakі see difavtomatіv buvayut?
• What are the elements of wine and how do you work?
• How to decipher the sign and connect the difavtomat?
• Why do you need spratsovuvannya?

Designation of difavtomat

Differential automatic machine - zahisny attachment, which is installed in a low-voltage measure for the security of a complex zahistu.

In one device, two functions will be combined - (widths) and ELV.

Zavdyaks expand opportunities, vibrating with a wide drink at the winery.

victoria sphere

Difaavtomat zastosovuєtsya for the accomplishment of upcoming tasks:

• The defender of the singing yard of the merezhi in the case of the protikannya of the rising strums, which is blamed on the times of the short circuit or the overweighing.
• Zapobіgannya pozhezhі or luchennyu people pіd diyu naprugi through the appearance of a coil, scho vinikaє through neakіsnu іzolyatsіyu provіdіv аbo vluchennu z fret pobutovyh priladіv.

In the first type, the differential automatic machine works like an automatic switch, and in the other, it works like a PZV (attachment of a closed connection).

What do you see?

The differential automatic machine is a universal device, which can easily be stuck in one- and three-phase lines.

In the first vipadka vikoristovuyutsya virobi with two poles, and in the other - with chotirma.

Structural features, the principle of difavtomat and scheme

Looking at the designation, I will build it according to GOST, it doesn’t matter to see the constructive elements of the zahisny apparatus.

To the main varto see:

• Differential transformer;
• A group of rozchipluvachiv (thermal and electromagnetic).

Leather from the elements of vikonu sevni zavdannya. Let's take a look at their report.

The diftransformer is attached with a large number of windings, the number of such windings to lie in the number of poles.

At yoga, the order to enter the division of navantageous strums at the skin one of the conductors. At different variability of indications, there is a strum turn, which is direct to the starting organ.

As the parameter is higher than the equal equal, the attachment includes an electric lance for the help of the power contacts of the difautomatic device.

For the verification of practicality, a special button has been added, as it is most often signed, like “TEST”. It is connected through the opir, which is connected in two ways:

• Parallel to one of the main windings;
• I'll wrap the winding on the transformer.

After spratsovuvannya buttons koristuvach piece-shaped strum unbalance. Yakshcho difavtomat spravny, vіn maє vimknuti lansyug. Otherwise, visnovki about the inadequacy of the apparatus will shy away.

The offensive element of the difavtomat is an electric rozchipluvach. Structurally, it may look like an electric magnet with a core.

The purpose of the element is to inject into the mechanism that includes. Spratsovuvannya electromagnet vіdbuvaєtsya zі zbіlshennyam navantazhuvalny strum vshee for vstanovleniya rіven.

Most often, it is the case with the appearance of a short circuit at a low-voltage barrier. The peculiarity of rozchіpluvach polygaє at spratsovuvannya without a showcase for an hour. Parts of a second are spent on turning on life.

On the vіdmіnu vіd elektromagnіtіnі, thermal rozchіplyuvаch protect not vіd short circuit in lantsyuzі, but vіd revantazhen. At the base of the knot there is a bimetal plate, through which a strum of advancing flows.

As a rule, the fault is greater than the allowable value (nominal strumu difavtomat), stepwise deformation of the element is taken into account. At the singing moment, the plate with a bi-metal bends step by step.

At the singing moment, it pours into the organ, which turns on the outbuilding. Zatrimka to the hour of thermal expansion to lie down in the stream and the temperature at the installation site. Sound, tsya staleness may be directly proportional.

On the skin of the difavtomat, the lower boundary is prescribed (shown in ma). Crim strumu coil, vzazuetsya and nominal strum rozchipluvach. The report about the marking of the device will be discussed below.

How to decipher the notation on the case?

It was more important that at the case of a differential automaton one could find all the necessary information.

Vivchivshi main parameters, it is easier to take a decision - chi fit an attachment for the completion of specific tasks.

To the most important signs of the varto add:

• AVDT - abbreviation, abbreviation variant of the new name (“automatic vimikach of the differential stream”).
• C25 - nominal parameter of the strum. Here C is a characteristic of the fallow time and strum, and 25 is the boundary strum of a difavtomat, which is unacceptable to move.
• 230 - rated voltage, under which it is allowed to stop the device (for the butt line).
• In 30mA - the parameter of the struma coil. When reaching 30 mA, the ELV is applied.
• Special sign, which confirms the presence of the ELV function and type of RCBO. For the obviousness of the sign, the whiskers are trying to build a differential automaton to respond to a constant or a changing pulsating strum.

Also, an important scheme is applied to the body of the zahisny virob. Call out to the inhabitant, you can’t say anything, that’s why it’s not obligatory to put respect on her.

Also, the “TEST” button has been transferred to the upper part of the building, which is necessary for periodic control of the correctness of the building in the part of the ELV. We have already spoken about the peculiarities of re-verification for the help of which element.

How to connect attachments?

Before that, how to connect a difavtomat, varto rose to the type of electrical wiring.

Here are the following options:

• Merezhі type - single-phase or three-phase. In the first type, the nominal voltage is 220 Volts, and in the other - 380 Volts.
• The presence of grounding - to establish a measure of grounded or without it.
• Place for installation. In most cases, AVDTs are installed near the apartment, but it is also possible to install them on the skin of a group of conductors.

Looking back at the sight of the mind, it is necessary to sign up, as if you were connecting your own apparatus. Warto remember that a difavtomat can have a low design capacity.

Let's take a look at the main ways to connect to the shield:

Why can you use a difavtomat?

In the process of exploitation of the plant, I will attach it importantly to understand, in some situations you can help.

To improve these nuances, take a decision about the cause of the problem (short chime, strum turn and others).

Let's take a look at the skin from the options of the report:

Spratsovuvannya without pretension.

In old booths with filthy conduction, there may be a lot of serious problems with insulation.

The rest is worn out and a high risk of the appearance of a strum in the turn, the value of which can change with the improvement of the rich parameters - the order of the creatures is equal to the water level.

In such a situation, AVDP can work out badly.

The cause of the problem could be:

• Poshkodzhena isolation;
• Presence of twists;
• Prorahunki in the rozashuvanny of roses in pre-boxes;
• Electrical accessories.

To reveal the cause, a revision of the wiring is required. It is necessary to start with diagnostics of the ushkodzhennya.

For example, like a difavtomat vibivay when the light bulbs are on, the problem needs to be solved by the lighting lance.

If the AVDP is spratsovuє after the connection, I will attach it to the outlet, change the varto, what is the connection.

When the "zero" zamikanny that "earth".

As a matter of fact, the cause of the dross N and PE are one to one, a high risk of the differential automaton. Wider space for a faucet - at the outlet box or a box for an outlet.

The logic of spratsovuvannya was inspired by the principles of distruction. Like zero and the earth are united, the strum is divided between two guides. Obviously, in the diftransformator there is no equivalence of strums, and vin accepts this fact as a turn.

The problem is often faced by masters-pochatkіvtsі, yakі not mayut reliable dosvіdu in the food service of the difavtomat.

Podbags

Differential automatic machine - korisny attachment, building protection against short circuit and strumov coil in a low-voltage circuit.

For this correct installation, it is important to know the rules for connection and operation, as well as the specifics of diagnosing malfunctions in different operation of the device. Read thoroughly.

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