Schneider Switch TCL switch to see the appearance
First check the packaging. High-quality sockets are clearly packaged and printed, information is complete, and formal inquiry telephones are indicated; and inferior outlets are poorly packaged, printing is vague, and some even lack the most basic manufacturer and product information, or use the wrong inquiry phone to blind consumers. .
If there is no problem with the outer packaging, then look at the shell panel. High-quality sockets such as bull sockets work fine, uniform matte surface, glossy surface, and no burrs, flashes around the shell and the edge of the socket; and uneven matte surface uneven particles, smooth matte surface, glitches, fly Many sides, rough work. In addition, high-quality sockets are marked with a clear anti-counterfeiting mark or identification method, and most of the inferior sockets have no formal security signs.
Next, check the plug. The bull socket with three-pole jacks is equipped with a three-pole plug. In addition to the zero line and the fire line, it also has a grounding pole, which can effectively prevent electric shock and ensure safety; while many poor quality sockets contain three-pole jacks but only There are two-pole plugs, no grounding pole, easily lead to electric shock accidents.
Finally, the consumer can also look into the jack and observe the copper guide. High-quality sockets, such as the bulls, have a thick copper sheet, and the coating is uniform and bright, with uniform color. In contrast, poor-quality sockets often use inferior copper sheets, are thin, and have no surface treatment, and their color is not uniform. Even though some poor quality sockets appear to be "copper" thick, they are plated with nickel on the iron plates, which tends to rust, have poor electrical conductivity, and have a large amount of heat. This is a great safety hazard.
Second hand feeling
After reading the packaging and product appearance, hand testing is also critical.
First, it can be repeated several times to press the socket switch, high-quality socket switch feel moderate, open and close freely, light and not tight, sound crisp; and poor quality of the socket is blunt, easy to stagnate.
Second, experience plug and feel. The high-quality sockets are not only moderate in the sense of insertion and extraction of single holes, but also have the same insertion and extraction feelings of the respective jacks; and the inserting and pulling forces of the inferior sockets are too loose or too tight, the elasticity is poor, and the feel of each hole is also obviously different.
In addition, pulling the power cord, the power cord of the high-quality socket feels moderately soft and hard, and the socket is solid and reliable; while the power cord of the inferior socket has a softer feel, and is not firmly connected with the socket, and can easily be pulled off.
Three recognized brands
After “seeing two testsâ€, consumers should also select large manufacturers of big brand outlet products. After passing the test of time and market, the big brands are even more trustworthy. The inferior sockets and cottage brands lack specialized research and development, production and testing equipment and standard quality control standards, and the hidden danger of electricity safety is extremely high.
The above three strokes are both simple and practical. Consumers can use this to accurately select high-quality outlets and avoid "due to small losses."
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It is a typical silicate material made of natural raw materials such as feldspar, clay and quartz. The main constituent elements are silicon, aluminum and oxygen. These three elements account for 90% of the total amount of crust elements. Low cost and mature technology. Such ceramics can be divided into daily-use ceramics, architectural ceramics, electrical insulating ceramics, chemical ceramics, etc. according to their performance characteristics and uses. It is made of high-purity synthetic raw materials and is formed by precision control process. It generally has some special properties to meet various needs. According to its main components, there are oxide ceramics, nitride ceramics, carbide ceramics, cermets, etc.; special ceramics have special mechanical, optical, acoustic, electrical, magnetic, thermal and other properties. According to different uses, special ceramic materials can be divided into structural ceramics, tool ceramics, and functional ceramics.
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