I remember that when I was young, when I met with thunderstorms, my parents would always allow us to turn off the TVs, computers, and other home appliances. Although we were reluctant, we would still do so to prevent electric appliances from being damaged by lightning strikes. Now grown up, in addition to knowing the truth, but also to know why, then, what causes thunderstorms will cause damage to home appliances it? How can we effectively prevent home appliances from being struck by lightning? Next we will discuss together!
Appliances "recruit" principle
Spring and summer seasons are the peak period for thunderstorms. According to relevant home appliance maintenance personnel, the electrical appliances sent during the spring and summer months are mostly due to lightning strikes. In particular, during the summer months, basically every time a mine is hit, it sends a batch. In general, lightning is divided into direct lightning and induced lightning. The main reason that the lightning season affects the safety of household appliances is caused by the intrusion of induced lightning.
A friend will ask: “In what ways are induction mines invaded?†In fact, for the average family, there are four intrusion routes for inductive lightning: power lines, telephone lines, and television antennas (wireless and wired All included), house exterior or pillars. Among them, the first three ways are all connected directly to home appliances. Therefore, when a strong lightning current invades these circuits, it will cause serious damage to the home appliances. Therefore, in thunderstorms, cutting off the electrical contact with the outside world, unplug the power plug, or can play a role in lightning protection.
However, it is often easy for us to ignore the fourth method of lightning invasion of home appliances—house walls or columns. When the house we live in encounters direct or side-by-side thunder, strong lightning currents flow down the walls or columns of the house, and in the process, powerful currents generate electric and magnetic fields in the surrounding space. If you are too close, you may be affected and cause different degrees of damage.
Since thunder and lightning can bring a big security risk to home appliances, then we must protect our home appliances. Let us know which home appliances are easily struck by lightning and how we should pay attention to lightning weather.
How to protect household appliances from lightning?
TV: thunder and rain first close the window
With regard to how TVs avoid lightning, some users believe that it is possible to install lightning rods on TV signal lines to prevent TV from lightning strikes. However, the installation of lightning rod editorial advice or ask relevant professionals to install, after all, if the lightning rod is not scientific enough, the lightning rod is no longer "lightning" but "trick", once a lightning strike, hundreds of thousands of volt lightning It will be introduced into the TV through the signal line, which is harmful and useless.
Therefore, the simplest and most effective lightning protection method for TVs is to position the TV as far as possible from the windows and maintain a distance of about 10 cm from the wall. First close the window during thunder and rain, because the bed is an important way of lightning invasion, then quickly pull out the TV power plug, and pull out the signal line connection, it can be important to protect the TV from lightning damage .
Computer: Not only plugs need to be pulled out, cable must be pulled out
Computer careers that have not been damaged by lightning are not a complete career. As we all know, the computer is a highly integrated high-tech electrical appliance. Once the semiconductor integrated circuit is punctured by lightning, it loses its original polarity and the integrated circuit is damaged. Therefore, in thunderstorms, turn off the computer and unplug it.
Lightning protection socket
However, it is not enough to just pull out the plug. I remember that once I edited it, I did not unplug the network cable during the thunderstorm. Thunderbolt directly burned the router and network card. Therefore, in addition to unplugging the plug, the cable plug must be unplugged. In addition, nowadays, there are lightning protection devices that specifically aim at lightning damage.
Air conditioning: stop using it in thunderstorms
Like the cable signal line of the TV, in the thunderstorm weather, the outdoor unit of the air conditioner is also a guy who is easy to “trickâ€. In air-conditioning lightning protection, we must consider several factors: First, the air-conditioning outdoor unit should be considered to be connected with the ground when installing, and the compressor should be welded with the structural column of the floor body to make down the line or do the deflector. In the general high-rise buildings, the windows have been equipped with pressure equalizing ring taps and can also be welded nearby to prevent direct lightning strikes. Secondly, indoor air-conditioning hosts are well shielded to prevent lightning current intrusion. Of course, for the sake of safety, it is recommended that everyone turn off the air conditioner and cut off the power supply during thunderstorms.
Washing machine: Avoid connecting with water pipes
And the computer is somewhat similar, the circuit board of the washing machine is the module integrated microelectronic circuit board, and this kind of highly integrated circuit board lightning resistance performance is also teaches the difference, therefore, the washing machine circuit board is also very fragile to face the lightning strike. In general, we all like to connect the washing machine to the water pipe. Therefore, if the machine unfortunately suffers a lightning strike and causes a short circuit in the circuit board, causing leakage of the washing machine, it will greatly endanger the safety of the user. Therefore, the user must pay attention to the inspection of the roof of the building. Whether the metal pipe has been connected with the lightning protection belt, it is better to stop using the washing machine and remove the power socket when it is raining and it is better not to connect the washing machine with the water pipe when not in use.
Summary: For electrical appliances, lightning has a lot of power, so many people report a fear of lightning. But as long as we do lightning protection measures, lightning damage to home appliances is still very far away. Some of the above mentioned lightning protection techniques for electric appliances are hopeful for everyone.
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