When we buy household items, we must firmly grasp two points: one is functional; the other is visual beauty.
For home lighting, its functionality is especially important because the functionality of a light is not only reflected in the illumination, but also in safety. In order to make all the lights in the house work efficiently and safely, it is necessary to pay attention to the light source (light bulb, light pipe), switch and socket at the time of purchase. The safest and most worry-free way is to buy at peace of mind. Brand products, but when the products of various brands come together, how to compare? After consulting several professionals, the reporter provided the following experience.
light source
There are currently three main types of light sources on the market: traditional light bulbs, light pipes and energy-saving lamps. In addition, with the advancement of technology, there is now an emerging light source called semiconductor lighting.
For traditional light bulbs and ordinary light pipes, the Chinese have used them for decades, and the production process is also very mature. The quality of such light sources produced by most manufacturers can be guaranteed. However, the defects of such a light source are easy to wear, and the voltage is unstable, and it will be "burned". Therefore, when using such a light source, it is necessary to pay attention to the flexibility of the lamp cover to be easily replaced.
Energy-saving lamps are gradually becoming mainstream products in the market due to their advantages of power saving, long life, high voltage adaptability and high degree of reduction. Due to the high profit of such commodities, large and small manufacturers have launched, so pay special attention to the purchase of energy-saving lamps.
Generally speaking, the safety performance of the light source is directly reflected in the Great Wall logo and other safety certifications. In addition to paying attention to these marks, it is best to test the lights on site when purchasing. The specific method is to install a cold lamp, the hand leaves the lamp, and the power can be turned on once. The "lighting once" should be understood as the minimum or no flicker at the start, the root of the lamp. No red light can appear. Some energy-saving lamps have a built-in lamp preheating circuit inside, and there is a delay of about 0.4 seconds at startup. Allow the lamp to operate for a few minutes and observe if there is any odor above the lamp when its temperature rises. Finally, we must look at the temperature of the lamp body after the power is cut off. The lower the temperature, the better.
There are several notable features of high-quality energy-saving lamps. One is the ability to truly restore color, and the other is rich in color temperature. The color temperature levels commonly used in energy-saving lamps range from 2700K to 6400K, which is enough to meet the lighting needs of the family in various situations. Selecting a low color temperature lamp below 3000K can achieve incandescent light-like warmth. If you want to get a clear and bright lighting effect, it is suitable to use a high color temperature lamp above 5000K.
When disassembling the energy-saving lamp, do not hold the lamp tube to prevent it from being broken. For lamps with a startup failure, after disconnecting the power supply, there is still the possibility of residual high voltage power in certain parts, which requires safety. When the weather is too cold or the voltage is too low, the lamp will start to malfunction. Do not let the lamp always be in the high current starting state of the lamp red. It can be turned off quickly and then energized again.
Energy-saving lamps should be used in the environment when they are used. Do not use them in high-temperature and high-humidity environments, especially compact energy-saving lamps. Because of their high-frequency and high-voltage operation, the heat dissipation conditions are slightly worse. Therefore, under high temperature and high humidity conditions, it is easy to cause denaturation of magnetic materials and discharge between lines. This type of lamp should be avoided in bathrooms and kitchens.
switch
The switch controls the opening and closing of the lamps in the living space of the home. The socket ensures the stable and safe power connection of the household appliances. In a well-decorated home, the selection of good switches and sockets can become the crowning touch of the home environment. But when choosing a switch socket, the most important thing is to have good safety performance, which is reflected in eight aspects.
First, the material. The materials used in the panel of high-quality switch are excellent in flame retardancy, insulation, impact resistance and moisture resistance. The material has strong stability and is not easy to change color. In addition to high-grade plastics, the current switch panels are also available in gold-plated, stainless steel, copper and other metal materials, providing people with more and more choices.
Second, the appearance. The surface is smooth and smooth, the color is uniform, and the texture is generally good. In addition, the brand logo on the panel should be clear and full, and the surface must not have any burrs.
Third, the internal structure. The switch usually uses pure silver contacts and a silver-copper composite material to make a conductive bridge, which prevents the arc from causing oxidation when the switch is opened and closed. The high-quality panel's conductive bridge is made of silver-nickel-copper composite material. The silver material has excellent electrical conductivity, and the silver-nickel alloy has a strong ability to suppress arcing. This ensures that the switch can be opened and closed more than 80,000 times, far exceeding the international regulations. 40,000 times of standards. The switch with brass screw pressure line has large contact surface, strong pressing capacity and stable and reliable wiring. If it is a single-hole wiring copper column, the wiring capacity is large, and it is not limited by the thickness of the wire, which is very convenient.
Fourth, feel. Try the switch, the good switch spring is soft and moderate, the elasticity is excellent, and the turning of the opening and closing is more powerful. A situation in which the switch button is stopped at a certain position in the middle does not occur and becomes a serious fire hazard. It is also possible to use a switch, and the high-quality products will not have a light feeling because of the large amount of copper-silver metal.
Fifth, the production process. The switch is often touched, especially the color switch panel. If the unqualified inferior product is selected, it will fade and fade after a long time. If you select a switch that uses materials that have UV resistance and that are painted on the frame, the color will not change at all even after a long period of time.
Sixth, humanized design. Now, there are night lights on good switch panels, even the most traditional fluorescent paint nighttime indications, from single green fluorescence to multiple colors. Power light is another way of nighttime indication. At present, LED lights are used instead of daylights to ensure longer life, lower heat generation rate and softer light. Some switches use a grid structure panel and a thick mounting hole, which can effectively avoid the deformation caused by excessive force when installing the panel. Some high-end products also use a transparent base to allow them or the electrician to observe the internal structure of the product. Some panels will reserve 6-8 (up, down, left, and right) fixed mounting holes, which are suitable for installation in a variety of situations.
Seven, packaging and instructions. Brand products pay great attention to consumer satisfaction, so the effort in product packaging and manuals is unmatched by unqualified brand-name products. Imported brands must be accompanied by Chinese manuals. The product name, brand, technical indicators, etc. are clearly marked, from installation to safety precautions. These are all things to be aware of when choosing a switch.
Eight, safety certification. Qualified switch products must be nationally certified and meet international industry standards. Domestic products must pass 3C certification and ISO9000 series certification. Some international brands have also obtained other national and international safety certifications, which will be marked in the product itself, packaging or instructions.
socket
The plug is divided into two holes and three holes in appearance, and has a round plug, a flat plug and a square plug. There are many types of sockets that are suitable for use, both with switches and without switches, and many sockets have many additional safety features and devices, such as sockets with fuses, safety gates or indicator lights.
When selecting a socket, try to choose a product with a protective door. Secondly, to check the tightness of the socket clip, the smooth insertion force is a key safety factor. Also pay attention to the socket that matches the rated current, plug size and junction box specifications of the household appliance. Do not use the so-called universal socket, the correct way should be what kind of plug is equipped with what kind of socket.
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