【Full copper lamp]Lamp quality----The university in a small environment?

As an ordinary consumer, we did not often contact with the relevant knowledge of lamps in the process of purchasing lamps. Therefore, if you want to choose a lamp that you like and is safe, especially in terms of safety, you don't know where to start. Below we will give a brief description of the quality problems related to the lamp in the above aspects. First, look at the Mark, ① The Mark of the lamp, when purchasing the lamp, first look at the mark on the lamp, such as trademark, model, rated voltage, rated power, etc, judge whether it meets your own requirements. Marking safety is the basic requirement for the safety performance of lamps, and the rated power is particularly important. For example, a lamp designed for 40 W, due to the unmarked rated power, users are likely to install 60W or 100W bulbs, which may cause Shell deformation, insulation damage, even electric shock and fire. (2) attention should be paid to the protection of electric shock from the identification of electric shock protection. After the lamps are electrified, people should not touch the live parts and there will be no danger of electric shock. If you buy incandescent lamps (Such as chandeliers, wall lamps) , Install the bulb, in the case of no electricity, if you can not touch the live parts with a small finger, the anti-electric shock performance is basically consistent. (3) Check the 3C logo of the National Electrical Safety compulsory certification. This logo is a laser imitation fake logo issued by the state. Carefully check whether the above company name is consistent with the name of the lamp company on the lamp packaging. If it is inconsistent, it means there is a problem. It is best not to buy lamps from such manufacturers. In addition, the standard stipulates that the minimum cross section of wires used on lamps is 0. 5mm2, some manufacturers use wires with smaller cross sections to reduce costs, which may cause the wires to be burnt and the insulation layer to be short-circuited after burning. The identification method is: when purchasing, you can look at the marks printed on the insulation layer outside the conductor on the lamp, and the cross-sectional area of the conductor should be at least 0. 5mm second, from the structural identification of lamps (1) The entrance and exit of the metal pipe through which the wire passes should have no sharp edge, so as not to cut the wire, causing the metal parts to be charged and causing the risk of electric shock. (2) Movable lamps such as desk lamps and floor lamps shall have a wire fixing frame at the entrance of the power cord, which is used to prevent the heating element from being touched when the power cord is pushed back. The insulation layer melts due to overheating of the wire, and the exposed wire contacts the metal shell, the shell is charged and causes electric shock. (3) Identification from accessories used on lamps ① If electronic ballast is used in lamps, lamps equipped with abnormal protection electronic ballast should be purchased, the so-called abnormal protection refers to the protection given when an abnormal state occurs in the fluorescent circuit, so that the electronic ballast can still work normally. Without this kind of protection, once the lamp tube is broken, the electronic ballast will also be broken, which is not allowed by the standard. In order to reduce the cost, some lamp factories use electronic ballasts to omit this abnormal protection measure. (2) inductive ballast is used in lamps and lanterns. Look at the marks on the ballast and try to choose one with higher Tw value (Such as Tw130) Especially when the heat dissipation conditions of lamps are poor, more attention should be paid to this point. Tw is the rated maximum working temperature of ballast coil, at which ballast can work continuously for 10 years.