How to choose fixed ceiling lamps

2022-07-22
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Fixed ceiling lamps are often used in homes, offices, entertainment places and other places. When choosing lamps, the safety and quality of lamps should be considered first, and the purchase should be considered according to the size, height and function of the room

fixed ceiling lamps are often used in homes, offices, entertainment places and other places. When choosing lamps, we should first consider the safety and quality of lamps, and choose according to the size, height and function of the room. Here are some ways to choose fixed ceiling lamps:

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1. In large stores, you can choose “ Three guarantees ” Promised products, choose lamps with CCC certification mark

2. Look three times when shopping. Once we see whether the product identification is complete, the identification of formal products is often more standardized. We should identify: trademark and factory name, product model and specification, rated voltage, rated frequency and rated power. Second, check whether the power line of the lamp has CCC safety certification mark, and the cross-sectional area of the external conductor should be ≥ 0.75 mm2。 Third, check whether the electrified body of the lamp is exposed. After the light source is installed into the lamp holder, fingers should not touch the electrified metal lamp cap

3. Choose a higher anti electric shock protection category:

according to the anti electric shock protection type, ceiling lamps can be divided into Class 0, class I, class II and class III. Class 0 lamps have poor safety, so class I, class II and class III lamps should be selected as far as possible

0 lamps rely on basic insulation as protection against electric shock. In case of basic insulation failure, it is easy to produce electric shock hazard

the anti electric shock protection of class I lamps not only depends on the basic insulation, but also includes additional safety measures, that is, connect the accessible conductive parts to the grounding protection conductor, so that the accessible conductive parts will not be charged when the basic insulation fails

there is a grounding symbol next to the grounding terminal of class I lamps. It should be noted that the metal shell of class I lamps should be effectively grounded. If the lamp replacement tube can touch the ballast, the ballast should also be effectively grounded

the anti electric shock protection of class II lamps not only depends on the basic insulation, but also has additional safety measures, such as double insulation or reinforced insulation. In case of failure of the basic insulation, it can also rely on the protection of supplementary insulation. Lamps with plastic shell are generally Class 0 or class II. It is best to choose class II lamps, which have symbols

the anti electric shock protection of class III lamps depends on the power supply for the safety extra low voltage, and the voltage higher than the safety extra low voltage will not be generated inside the lamps

4. Instructions for using lamps:

(1) after buying back the lamps, don't be busy installing them first. You should carefully look at the marks of the lamps and read the installation and operation instructions, install the lamps according to the provisions of the instructions, and use the lamps according to the use rules in the instructions

(2) replace the aged lamp tube in time according to the light source parameters provided by the sign. If both ends of the lamp tube are red, replace the lamp tube in time to prevent the ballast from burning out and other unsafe phenomena

(3) during cleaning and maintenance, attention should be paid not to change the structure of the lamp, nor to replace the parts of the lamp casually. After the cleaning and maintenance, the lamp should be installed as it is, and do not omit or install the parts of the lamp by mistake

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