With the increasing number of electrical appliances in the home, the safety of electricity use has gradually been taken seriously. In order to better ensure the safety of people's electricity, many electrical appliances are equipped with leakage protection switches, but there are many varieties of leakage protection switches on the market. So how do we choose a leakage protection switch ? What is the principle of the leakage protection switch? Let's take a look with the editor.
1. How to choose the leakage protection switch
1. Observe the appearance: first of all, you can see whether the workmanship of its surface is exquisite, and whether the interface at the merge and the gap is even. Secondly, at the time of purchase, you can use a lighter in the store to test its heat resistance and flame retardant effect.
2. Check the label: Everyone knows that the label is unique to each product. The information on the label can find out whether the product has professional production qualification. At the same time, you can also check whether the quality of its leakage protection switch has passed the certification of a professional institution.
3. Internal structure: The internal structure should be reasonable. First, the copper coil must be neat and precise, and secondly, the structure of the copper coil must be fully enclosed, and there is the phenomenon that the solder joints of the circuit board cannot be de-soldered and virtual soldered.
4. Company history: It is also good to choose a product produced by a company with a history. Such a company often has a good reputation and strong research and development capabilities, so its quality is also good, and the after-sales are also more guaranteed.
Second, what is the principle of the leakage protection switch
Under normal circumstances, the current at both ends of the zero-sequence current transformer is the same, but the direction is opposite, and no induced magnetic flux will occur in its iron core. When there is no current output from its secondary winding end At this time, the switch is closed. But under abnormal conditions, when a leakage occurs, the current at its two ends of the zero-sequence transformer is different, which will produce a poor current. At this time, its iron core will produce induced magnetic flux, making the secondary The current is output from the winding end, so that the current amplifier will make the electromagnetic buckle fall off, so that its switch will be switched to the off state. This state can well protect our electrical appliances, and can also protect people's safety, reducing the occurrence of electric shock accidents.
Editor's summary: The above is about the principle and selection skills of the leakage protection switch . If there is a need to install such a protection switch at home, I hope this article can bring some help to friends. The function of the leakage protection switch is great, and it is a good choice. Everyone should be strongly encouraged to install this device.
What, the decoration still uses his own money? ! The Qi family is decorated in installments, with an ultra-low annual interest rate of 3.55% and a maximum loan of 1 million. Apply now to enjoy the discount
If you are interested in brand cooperation, content cooperation, and advertising of this website, please send an email to :.
Ultraviolet Uvc Light,Germicidal Uvc Lamps ,Replacement Uvc Lamp,Uvc Germicidal Light
Foshan Kingrate Optoelectronic Technology Co., Ltd. , https://www.kingrateuv.com