Do the security monitoring and control project connect you to the leakage protection device or take the air?

A lot of security guards have such an experience. They only use air switches without leakage protectors, because sometimes they can't get on the brakes.
What is actually happening? Is it safe?
Also, for the following figure, are you connected to a breaker or a leakage protector? What is the difference between them and how should they be used?

Today we talk about the air breakers and earth leakage protectors!
Although we belong to weak current projects, we actually deal with strong electricity every day. In fact, we understand the difference between leakage protection devices and air switches, not only can help us solve many problems in practice, but also have the knowledge to learn how to use electricity safely. There are fewer errors in product selection and system debugging of the security system. At the same time, it can also largely avoid such disasters.
The difference between the air switch and the leakage protector today is mainly based on the understanding of the two types of appliances. Then we can take a look at the difference between the detailed leakage protector and the air switch.
What is an air switch?
The air switch also becomes an air circuit breaker. The principle of the air switch is to use air as the insulating medium, in the circuit to connect the current, so that the element generates heat, promotes the bimetal inside to bend upward after being heated, push the lever, make the locked lock open, cut off the power, and thus The air switch will automatically trip on itself to achieve a protective current. General automatic tripping is due to problems such as overloaded circuits or short circuits. The opening of the lock is the use of a lever device, and the lever can be used to open the lock to achieve the purpose of automatic tripping. Compared with the difference between the air switch and the leakage protector, in principle, the air switch is more complicated.
What is a leakage protector?
Leakage protectors, as the name suggests, are switches that prevent leakage and cause safety accidents. Leakage protector's principle of operation is that its center has a small chip, this chip has a total of two things called windings, one main and one auxiliary, the main winding is divided into two windings, namely the output and input current winding. If there is no leakage current, the output current is equal to the input current, so the vector of the two magnetic fluxes on the chip is zero, and no safety accident will occur on the winding device. If the principle is broken, Then the voltage will be generated on the secondary winding, pushing the built-in mechanism and finally tripping automatically.
In principle, this is one of the differences between the air switch and the leakage protector.
First of all, in the above content, we also have a certain understanding of what is the air switch and what is the leakage protector. What is the difference between the leakage protector and the air switch? It is the air switch and the leakage protector. One of the differences, and the only difference is that the two are also different in terms of protection. The air switch is generally used for a long time to prevent the circuit from being overloaded. In order to prevent the human body from getting an electric shock, it only plays the role of a fuse; and the leakage protector prevents the human body from electric shock and leakage, and does not play a big role in overloading the circuit. . Because of the different working principles of the two, the security protection is not the same, so the two are not blindly mixed.
Second, the second difference between the leakage protector and the air switch is that the motion detection method is not the same. The safety switch is purely because the circuit is too heavy to cause tripping to protect the safety of electricity;
The residual current detected by the leakage protector is the algebraic sum of the neutral current and the internal phase line of the protection loop current. Therefore, this residual current device only needs to escape the leakage value and cut off the leakage protection device very sensitively. Prevents direct contact with leakage current. So in this way of action detection, this is the biggest difference between the two.
Again, there are many differences between the leakage protector and the air switch. For example, in the aspect of protection, the air switch only acts as a protection against the current of the large circuit. It mainly detects the short circuit in the circuit and the overloaded current. The leakage protector is a protection function relative to the small circuit. Detecting line equipment, protecting human safety and equipment safety;
In terms of tripping, the safety switch is through the live line and the neutral line. If the current between the two lines is too high, tripping will occur, and the leakage protector will only be a fire line. When the human body touches the fire line, it will form a circuit with the ground, resulting in the device inside. It will automatically feel and reach the purpose of tripping, playing the role of protection.
After reading the difference and application between the two, we definitely have a clear understanding of the air switch and the leakage protector. So I put together an article on the working principle of the leakage protector from the Internet, attached with the second article, we can see, for how to better use surely there is a lot of help.

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