Six problems with shoddy ceiling lamps
As a large quantity of lighting products, there are many manufacturers of ceiling lamps. Every year, there are companies converting, and there are small-scale enterprises. Many small businesses choose hot-selling products to imitate and then purchase parts and components. Because many companies do not know much about the product requirements, they are subject to market and cost factors in the process of imitation and produce a variety of deviations that do not meet the requirements of national standards. This status quo in the lighting industry has caused the quality of ceiling lamps to be at a low level. To sum up, ceiling lamps mainly have the following problems:
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1. The internal sectional area of ​​the lamp/external wiring is less than 0.5mm2/0.75mm2. The cross-sectional area of ​​the wire is too small to be a hidden danger for the safety of the lamp. If a large current occurs in the event of a failure, the wire will be burned before the operation of the power supply line insurance system, and then a safety accident such as fire or electric shock will occur.
2. The durability of the lamps does not meet the standard requirements. The main reason is that the rectifiers used in the fluorescent ceiling fixtures are not shut off. In particular, the electronic rectifiers have no abnormal state protection devices. Under abnormal conditions, the electronic rectifiers will be damaged or burned immediately, and the lamps cannot be used or become dangerous.
3. Insulators used in lamps are not heat and fire resistant. In particular, there are many insulating materials used in fluorescent lamps, such as lamp holders, starter seats, etc. This problem is very prominent. Insulating materials with fixed live parts or electrical shock protection used in lamps must be heat resistant and fire resistant to prevent these insulation materials from being deformed, burned, etc. due to overheating and electric sparks for a long period of time. .
4. The lighting process is rough, and there are safety hazards during assembly and use. For example, there may be sharp corners at the corners of the sheet metal parts, which may cause injury to the installation and maintenance personnel; sharp corners or burrs may be found on the inner traces, and the inner conductor insulation layer may be easily punctured during the installation process. This may cause potential safety problems such as short circuit and electric shock.
5. The structural design of the lamp or the key components used does not meet the requirements of protection against electric shock. This can cause people to easily touch live parts when the lamp is installed or when the light source or the starter is turned on. For example, the unsatisfactory screw base makes the lamp exposed, the exposed fluorescent pin does not meet the requirements of the exposed pin, and the structural design of the lamp is unreasonable, so that the printed circuit board of the open type electronic rectifier is exposed. These unsafe structures cause the lamp to be protected against electric shock. Protection does not meet.
6. The harassment voltage of the luminaire exceeds the standard regulations. Harmonic voltage is a kind of radio disturbance, and its harm will affect the use of electrical appliances in the area of ​​a large frequency band. At present, a large number of electromagnetic harassment has formed environmental pollution. When the harassment voltage of the luminaire exceeds the limit, it will affect the normal operation of the surrounding radio and television reception and instrumentation equipment, resulting in failure to listen to the broadcast television and control the instrument normally.
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