Difavtomats and RCD: characteristic

If you do not know how the RCD differs from the difavtomat, read this article.

Content

In the residential and working room, normal protection against lesions of the supervision should be provided. After all, the electrical science can be damaged or it has a poor -quality external insulating layer. In this case, there is a serious danger of electricity lesion, which threatens human life and health.

Dangerous voltage is also present on the surface of household appliances, which is made of metal.
You can protect yourself and loved ones using special devices - difavtomat or RCD.
What is the difference between these devices? What characteristics do they have? Which is better - difavtomat or RCD? You will find answers to these and other questions in the article below.

These devices, both differential machines and devices of protective shutdown, help to protect human life. They protect the electrical wiring from short circuits and overload, and a person from a stroke by super -flow. Here are the definitions of these sensors:

Protective shutdown device (RCD) - This is an electric switch that provides rapid protection using a reaction to the phase close to the ground.

If a person touches, for example, to household appliances, which “shorts”, then the protection of the RCD will work, the device will be turned off.
At the same time, a person will not suffer from an electricity strike.
The RCD is used independently - this is an integral part of the system with confusion and grounding.

The difavtomat is switching - a contact promotor.

This device is designed to conduct, turn off the electric current in normal conditions where different domestic and industrial equipment is operated.
In the case when the electricity reaches a specific mark, the contacts will open.
Such a device consists of 2 or 4 switches, as well as a Dif block. protection.

The difavtomat works on the principle of de -energizing the chain when exposed to, for example, water or just moisture on an electric device. The same protection will work if damage to the insulating layer of the cable appears. Such a promotor can be installed with an RCD. Why this happens, read below.

What is the difference between the difavtomat and the RCD - which is better?

The difavtomat is different from the RCD

It is difficult for an ordinary person to understand how one sensor differs from another. They are similar in appearance, but differ in their functionality.

RCD:

It will react when an electricity leak occurs in the mains, which is connected to it.
If in this position there is no this device, then a person can be injured when touching a damaged technique.
In addition, the micro -peak can lead to a strong heating of the cable and further sunbathing or industrial wiring.
Therefore, such a sensor is needed in order to prevent defeat by an electric current, to prevent overheating of insulation and a fire.

Difavtomat:

A universal device that has incorporated all the functions of the above RCD and the automatic circuit breaker.
Prevents temporary circuits, prevents the micro -current micro -tank, overload to the electrical chap, which may appear at home or at work (offices, production facilities, warehouses, and so on).

Important: You will not figure out what is the difference between one sensor from another if you do not understand that the RCD cannot prevent a temporary closure that has currently appeared on the network. This is a kind of indicator that will determine a micro- or overhead of the electric current and will give you to know about it. It will react to damage to the insulating layer and turn off the electric network.

Many users, trying to check the operation of the RCD, deliberately create an overload, including many household appliances at the same time. In this case, the RCD will not work, and moreover, the network will ignite with this device. Therefore, the RCD must be connected with a difavtomat. When working in the system, they will provide the necessary protection against such emergency situations.

Visual differences:

You might think that they do not exist. A similar external equipment, the same plastic shell, the presence of the same buttons, switches and so on.
But look more carefully, and you will see that the letter signs are different, like the toggle switches, and the schematic images.

Marking:

The correct way to distinguish one sensor from another is to mark on the nominal electric current.
On the plastic membrane of these promOpts, technical characteristics are indicated: electricity indicators during leakage and working super -flow.
If on plastic on top of only 2 digits is an RCD.
If Latin letters are written on plastic - this is a difavtomat.

Electric circuit value:

On any such industrialprote, designed to protect against electric current, the plastic is applied by a schematic image of all functions.
There is an oval on the RCD - this is a designation of a differential transformer device. It also indicates an electromechanical relay, with which the electrocope is blurred and close.
All the same signs as on the RCD, and you will also see a display of an electromagnetic and thermal racer, which has a reaction to short circuits and overloads into an electrocope, will be written on the dipavtomat.

According to the schematic drawings applied to plastic, you can easily determine which promotor in front of you is an RCD or difavtomat.

Name and abbreviation:

On the plastic of the RCD, the inscription "Differential switch" will be visible. The abbreviation is "VD."
On the difavtomat-"switch-automatic of differential current." The abbreviation is "AVDT".

Quality in work and price:

The difavtomat is cheaper than the RCD, since the latter consists of a set of a protective shutdown and machine gun.
In quality indicators, the reliability of the response, the difavtomat and the RCD are not inferior to each other.

It is worth noting: Import devices work much better than Russian. This applies to the reliability of individual parts, the time of operation and strength of the body.

Exploitation:

AVDT is a combined device. He has a drawback that when triggered, you do not determine - current leak or overload occurred.
Therefore, the RCD is used paired with difavtomat.
But now modern advanced models have appeared, which have an indicator.

Repair:

If AVDT breaks down, you will have to make a complete replacement of the device.
If the RCD works with a difavtomat, then when you fail some detail, only this working element is replaced.

Advice: Consider all of the above, as for the repair of devices, when designing and laying the wiring in the room. It is important to understand that frequent overloads of the network with short circuits may occur.

Having decided on the differences, it is important to figure out which apartment wiring schemes should be used. For example, for an ordinary apartment with several sockets and household appliances, an RCD and a difavtomat that will work in the same system is suitable. If you need to protect a large country house with a household, boiler room, utility rooms and so on, then it is better to install two RCDs and one difavtomat.