At the moment, it is the peak season for decoration purchase. While the owners pay attention to the selection of high-quality wires and electrical appliances, the quality of the switch panel should be paid more attention. Although they are very inconspicuous characters in home improvement, they are directly related to the service life of electrical appliances and also involve electricity safety. Experts suggest that when purchasing a switch panel, in addition to focusing on materials, the most insured method is to check whether the product has passed the mandatory certification of 3C.
Inferior products stored in power hazards
Switch panels and sockets seem to be particularly simple in structure, and they are only terminal devices. Therefore, consumers mostly pay less attention to them, but in fact, poor quality switches may cause sudden fires. In some cases, sudden burning of home appliances may also be a bad socket. .
Li Jun, the product manager of the lighting business of Philips Lighting, said that if the structure or raw materials are not good, the switch directly affects the life of the switch panel. "The original design can use 40,000 switches, and the result may only be 4 Thousands of times." Huang Guojun, an expert on Schneider Electric switch panel products, said that if the copper sheet used in the switch panel contains more impurities, the thickness of the copper sheet is thin, the conductivity is poor, and the switching temperature is increased, there is a possibility that the switch will catch fire.
Li Jun also introduced that inferior sockets will bring hidden dangers of increasing power load. "Inferior sockets may have a virtual connection, resulting in a large increase in energy consumption, which will erupt after a certain period of time, causing the appliance to burn out in a short time or even cause a fire." He also stressed that this short circuit, "even if there is The circuit breaker is also not protected."
Panel yellow material is not good
In family life, some consumers will find this phenomenon: the switch panel turns yellow after a period of use, and even some switches stop in the middle when starting or closing, and some sockets are very plugged and unplugged. Strenuous... What are the reasons for this?
According to Li Jun, the yellowing of the switch panel is due to the use of unqualified materials by the manufacturer. "Good products use PC material (polycarbonate), and some manufacturers use PCs doped with recycled materials for cost reasons. The plastic properties become brittle and easy to yellow." Huang Guojun also believes that some manufacturers have used Miscellaneous PC materials or ABS materials, "the resistance to ultraviolet light is poor, so long-term use will change color and yellow." He also pointed out that poor quality materials have poor heat resistance, flame retardancy, impact resistance, etc. It will break and there is a risk of switching fire.
What is the reason for the switch to stop in the middle? Li Jun pointed out that the action of the button stroke is not clear. He analyzed that first, the manufacturer used inferior copper sheets, the processing technology was lower than the national standard; second, the structural design was not good enough to achieve rapid opening and closing. "This will affect the life of the switch for a long time, and it will have a certain negative impact on lighting products."
Then, many consumers will feel that the sockets on the wall are very difficult to plug in. Is this because the products are not qualified? Experts say that this is not related to the quality of the products, but the consumption experience. The socket on the wall is usually 30 cm away from the ground. Consumers need to kneel down to complete the insertion and removal. "There is often a problem of adapting the angle. It will feel very difficult to insert and pull." Li Jun said that some manufacturers can consider In this case, a certain angle is set in the product design to make the insertion and removal easier.
Switch panel should pay attention to the material
How to choose the switch panel? Experts say that the raw materials can be viewed first. Good products use PC materials. Huang Guojun introduced that PC materials have the characteristics of heat resistance, flame retardancy and high impact resistance, and have very good resistance to ultraviolet rays, and will not change color when used for a long time. PC materials can be identified by the following methods: look at the appearance. “The surface of the high-quality PC material switch should be smooth, smooth and round, with fine material and good color. It has ceramic white, no black spots, shrinkage, gas lines, burrs and so on.â€
In addition, you can also see if the material is resistant to high pressure. “Remove the switch frame and forcefully pull the diagonal. If the frame is deformed without breaking at this time, and there is a certain hardness, it is PC material. If it is too soft, it may be ABS material.â€
Second, we still need to see if it is fireproof. PC is a flame retardant material, which means that it can't be burned away from the fire. "You can take a lighter to burn, then take the lighter off. If it is turned off within 30 seconds, it will be PC material." Li Jun also stressed, "You can switch the switch many times during the purchase. Good products should be light, smooth and clear. The sound is crisp and the rhythm is strong."
Experts also pointed out that the material inside the switch can not be ignored. Huang Guojun explained that the internal reference here refers to the materials used in the internal conductive parts and contacts of the switch. He introduced that the high-quality switch conductive parts should be made of high-quality brass, the silver contacts are made of silver-nickel alloy, the socket conductive parts are tin-phosphor bronze, and the thickness of the copper piece should reach 0.6mm. Brass is fuchsia, tin phosphor bronze is yellow, and consumers can distinguish it from color. Some counterfeit and shoddy products are often replaced by copper-plated iron. "It looks exactly the same from the outside, but you can know the true and false by using a magnet. If you replace it with aluminum, it is easy to distinguish by weight."
Socket to pay attention to whether there is a protection door
How should the wall socket be chosen? Li Jun pointed out that when buying a wall socket, it is best to choose a socket with a protective door, that is, a "safety socket." The reporter learned that the protection door means that there are two blanks in the jack, which are closed when not in use. If the socket has a protective door, a certain amount of force is required for insertion and removal and the plug cannot be inserted. When the plug is pulled out, even if the finger accidentally reaches into the socket hole, there is no electric shock, which can prevent children from getting an electric shock. "When you buy, you can try a charger." Li Jun said that some sockets are actually "fake protection doors". If you encounter a socket that is "very easy to plug in", you should be "very careful". . In order to prevent short-circuit problems caused by oil and water vapor intrusion, it is best to choose a panel with a splash-proof box or a plastic baffle socket for the bathroom and kitchen.
Li Jun reminded that consumers should never buy a so-called universal socket that fits two poles, three poles, and a variety of standard plugs at home and abroad. "This product can be inserted and removed multiple times, which will reduce the service life of the copper piece. After increasing energy consumption, it will lead to potential power hazards. Experts said that although the national electrical standards have banned the sale of such products as early as two years ago, they still exist on the market, and consumers should be cautious.
â–¡ Purchase guide
Buy first look at 3C certification
Experts unanimously recommend consumers to buy international and national famous brands. “These brands have stable stores and dealers, and have corresponding certificates, and the service is relatively more secure.†Li Jun said. Huang Guojun also suggested that on the product packaging, high-quality switch products should have a clear factory name, address, telephone, production date, instructions for use and certificate of conformity.
When purchasing a switch socket, it is best to purchase a 3C certified product and ask the merchant to provide the corresponding documents. “Certified manufacturers are supervised by the national monitoring system, at least safe.â€
Online shopping pays attention to the authenticity
There are many consumers who choose to buy branded switch panel products online, but Huang Guojun said that online shopping should pay attention to the authenticity of products.
The first thing to look at is the license card. The formal agent of the brand switch socket will have the authorization card issued by the brand manufacturer, and the authorization card has the official seal of the manufacturer. With this license card, the merchant is eligible to sell the brand's products. Moreover, the license card has an expiration date and is updated every year. It is not recommended to buy a product at a switch merchant that does not have an authorization card or an expired license card.
The second is to look at the security signs. Many brand switches have special anti-counterfeiting marks. Some brands even have codes for each switch. Just go to the official website or call the official phone to check the code to know if it is true or not. The switch of the regular brand is generally double anti-counterfeiting, and the internal anti-counterfeiting has been hit at the time of production and cannot be forged.
In addition, you can check the official website of the brand. “The switches of each brand have their own set of anti-counterfeiting systems and methods to distinguish between true and false. You can go to their official website to find out the specific identification method.â€
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