At this stage, with the increasing awareness of people's safety and security, most residents pay more and more attention to the safety of their families. They have taken corresponding preventive measures, both in household electricity and in dealing with bad weather. There are a small number of families that have not paid attention to them, especially for lightning protection. They think that this kind of lightning strike is a small probability event, and they are not able to turn them at all. There is absolutely no need for protection. Isn't family lightning protection really unnecessary?
First, recognize that there is direct lightning lightning <br> <br> lightning and lightning. Direct lightning strikes are lightning directly hitting objects. Inductive lightning is when lightning strikes the surface objects. Because lightning current has a great time rate of change, it can generate strong overvoltage and pulse current on all conductors near the lightning channel. , causing damage. In terms of lightning protection, direct lightning is better protected, and inductive lightning is not easily protected. The strong charge shock generated by inductive lightning can easily lead to damage to electrical equipment such as power supply and communication in the home.
Second, the harm of lightning <br> <br> annual loss due to lightning disasters caused by humans ranked second in natural disasters, which indirectly damaging effects of electrostatic induction and electromagnetic induction lightning belong to lightning, while lightning and electrostatic induction power The overvoltage generated by magnetic induction has a greater range of hazards, which directly leads to the damage of home information systems and electrical equipment, which will cause serious casualties.
Third, the response <br> <br> As electronic products gradually integrated, intelligent, multi-functional trend, anti-overload device is limited, once the inrush current and overload will result in very serious consequences. Therefore, the protection against lightning protection should not be ignored.
First, in dealing with direct lightning strikes, it is mainly to use lightning arresters such as lightning arresters and lightning protection belts or to install first-stage surge protectors on the main distribution cabinets of buildings to vent the direct current.
Second, in response to inductive lightning, lightning current intrusion from the power line. The power supply lightning arrester can be connected to the incoming line of the power supply. If the power supply line is subjected to an induced lightning strike, the discharge path will be quickly formed, and the high voltage will be limited to a lower protection level while discharging, so that the household appliance equipment Protected from lightning.
Third, in the case of lightning current intrusion from the signal line, a corresponding signal lightning arrester is installed in each signal line in the box, which is mainly applied to the front end of important equipment. For home telephones, faxes, and televisions, telephone signal lightning protectors and video signal lightning protectors can be used for protection. For network lines, network signal lightning protectors can be applied to protect electronic equipment from lightning strikes.
At the same time, when selecting the lightning protection device, the working voltage, working frequency and operating environment of the lightning protection device should also be taken into account, and the corresponding lightning protection device should be selected for protection:
(1) Working voltage: According to the working voltage of the equipment, select the appropriate protection voltage for the lightning protection device. (2) Working frequency: According to the requirements of the equipment for the insertion of the lightning arrester, select the lightning protection device with different frequency.
(3) Use environment: If different lightning protection equipment is used, the lightning protection device with the same flow rate as the maximum surge of the area should be selected. At the same time, the lightning protection products should pass the lightning protection center inspection to ensure the safety of use.
Finally, Kejia Electric reminded the majority of home users that family lightning protection work can not be ignored, can not be held lucky, must be careful to do family lightning protection work, to ensure family safety.
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