Lamps with the mounting surface of the lamp and the ceiling of the building are commonly referred to as ceiling lamps, and the ceiling lamps are used to provide indoor illumination. The light sources that can be used for indoor lamps include ordinary incandescent bulbs, fluorescent lamps, high-intensity discharge lamps, and tungsten halogen lamps. The ceiling lamps of different light sources are applicable to different places. The ceiling lamps using fluorescent lamps and incandescent lamps are mainly used for lighting of places with a height of about 3 meters in homes, classrooms, office buildings, etc., with large power and light source volume. High-intensity gas discharge lamps are mainly used for lighting in stadiums, large shopping malls and factories with floor heights ranging from 4 to 9 meters.
In order to achieve sufficient brightness on the work surface while saving energy, the preferred product for home, school, store and office lighting is fluorescent ceiling lamps. Fluorescent ceiling lamps that are widely used should meet basic safety requirements.
Main safety requirements and EMC requirements for luminaires
1. The cross-sectional area of ​​the internal wiring of the lamp/internal wiring should be greater than 0.5mm2/0.75mm2.
2. The luminaire should be able to be used for a long time. Lamps using fluorescent lamps should be used with ballasts that provide normal protection not only in normal conditions, but also in the event of aging and damage to the lamp. The outer casing, lampshade, and insulated lamp holder of incandescent light bulbs should not be burnt or deformed during the durability test.
3. Adequate creepage distance and clearance.
4. The insulating material of the main safety components in the luminaire should be heat-resistant and fire-resistant.
5. The luminaire should have sufficient protection against electric shock.
6. The luminaire should have reasonable structural design and complete processing technology.
7. The electromagnetic disturbance of the luminaire should be within the limits specified by the standard.
8. The harmonic current of the luminaire should be within the limits specified by the standard.
How to choose ceiling lamps
Ceiling lamps are lamps that are frequently used in homes, offices, conference rooms, etc. In the purchase, the safety quality of the lamps should be considered first, and then the size, height and function of the room should be considered for purchase.
1, into the formal store, buy regular goods, to formal invoices, do not buy products that are too cheap, buy products with "three guarantees" commitment.
2, advertising is for reference only, it is very important to check the inspection report, especially in the inspection report, whether the items such as electric shock protection, durability test and combustion resistance are qualified.
3, should be three when buying. At first glance, whether the product identification is complete or not, the identification of regular products is often more standardized, at least the following contents should be identified: trademark or factory name, product model specification, rated voltage, rated frequency, and rated power. Check that the model number matches the model specification of the inspection report and safety certification certificate, and whether the electrical parameters are correctly identified. Second, look at the power cord of the luminaire. The cross-sectional area of ​​the conductor should be ≥0.75mm2. Third, look at whether the charged body of the lamp is exposed. After the light source is installed in the lamp holder, the finger should not touch the charged metal lamp cap.
Instructions for using the luminaire
1. After buying the lamp, don't be busy installing it. You should carefully look at the markings of the lamp and read the installation instructions. Install the lamp according to the instructions, and use the lamp according to the rules of use in the manual.
2. According to the light source parameters provided by the sign, replace the aging lamp in time, and find that the two ends of the lamp are red. When the lamp does not illuminate, the lamp should be replaced in time to prevent the ballast from being burnt out and other unsafe phenomena.
3. Pay attention to cleaning and maintenance. Do not change the structure of the lamp, and do not replace the parts of the lamp. After the cleaning and maintenance, the lamp should be installed as it is. Do not miss or misplace the lamp parts.
Editor: China Lighting Network Pony
Guangdong Ojun Technology Co., Ltd. , https://www.ojunconnector.com