LED lamps also need heat and fire resistance

Recently, the Shenzhen Municipal Market Supervision Administration issued a circular on the results of the quality supervision and spot check of lamps in Shenzhen in 2019. This time, a total of 74 batches of products produced and sold by 40 companies were inspected, and 29 batches of unqualified samples were found. The rate of unqualified products was 39.2%.

LED lamps also need heat and fire resistance

According to the report, the Shenzhen Municipal Market Supervision Bureau organized this supervision and spot check according to the "Lamps Part 1: General Requirements and Tests" (GB7000.1-2015), "Lamps Part 2-1: Special Requirements Fixed General Luminaires" ( GB7000.201-2008), and other standards, for marking of lamps, structure, interchangeability, protection against accidental contact with live parts, insulation resistance after wet treatment, dielectric strength, mechanical strength, etc projects were tested.

From the perspective of field distribution, this time, 10 batches of products in 10 production units in the production area were randomly selected, and no unqualified products were found; 54 batches of products of 22 inspected units in the circulation area were randomly selected, and 23 batches of unqualified products were found. The rate of unqualified product discovery was 42.6%; 10 batches of products of 8 inspected units in the Internet shopping platform (Tmall Mall) in the circulation field were randomly selected, and 6 batches of unqualified products were found. The rate of unqualified products was 60%.

Lamps must be heat-resistant, fire-resistant, and resistant to scratches

The reporter learned that Shenzhen is a sampling inspection by the Market Supervision Administration. The unqualified items mainly include: heat resistance, fire resistance and tracking resistance, marking/marking, structure, external wiring and internal wiring, interchangeability, grounding regulations, insulation resistance and Electrical strength / dielectric strength, creepage distance and clearance, protection against electric shock, mechanical strength, harmonic current. Also in the spot check in Guangdong Province, it was found that the heat resistance, fire resistance and scratch resistance of one batch of table lamps did not meet the standard.

According to the Guangdong Provincial Market Supervision Bureau, the above-mentioned 1 batch of unqualified table lamps were mainly unqualified for the insulating material of the fixed live parts of the table lamp switch position. The self-ignition time of the material after applying the needle flame for 10s exceeded 30s, the dripping igniting list. The reason is that the insulating material used by the enterprise has poor flame retardant performance. If the live parts of the lamp are electrically ignited, the insulating material of the fixed live parts may easily cause fire.

According to industry experts, in the test standards, the external insulation material parts for protection against electric shock, and the insulation material parts where the fixed current-carrying parts or safety extra-low voltage parts are in place should be sufficiently heat-resistant. The insulating material parts of the fixed current-carrying parts or the safety extra-low voltage parts in their positions, and the external parts made of insulating materials providing protection against electric shock shall be resistant to combustion and ignition. In addition, insulation components of non-ordinary luminaires where fixed current-carrying components or safety extra-low voltage components are in place or in contact with these components shall be resistant to tracking.

Observe the light when you choose to use 3C

In the notice, the Shenzhen Municipal Market Supervision Bureau reminded consumers to try to purchase products produced by well-known enterprises. Generally speaking, such high-profile and credit-worthy enterprises can meet the national standards, whether they are security projects or performance projects. When you purchase, you should do "three look." When the product identification is complete, the identification of regular products is often more standardized. The following contents should be identified: trademark and factory name, product model specifications, rated voltage, rated frequency, and rated power. Second, if the fixture has a CCC safety certification mark. 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.

When consumers choose self-ballasted fluorescent lamps and LED lamps, they must first pay attention to the parts of the lamps. The plastic parts should be taken. The lamp should not be directly touched by hand. Secondly, check the appearance of the lamp. The plastic parts of the lamp should clearly indicate the relevant information of the product such as trademark, factory name, rated voltage and voltage range, rated power, rated frequency, etc.; the bulb of the lamp should be smooth and free of air bubbles. The phosphor coating in the lamp should be fine, no particles, and even white; the lamp cap and the lamp should be vertical and should not be inclined; the soldering station of the lamp cap should be flat, and the solder at the ends of the lamp should not be too high. The lamp tube and the plastic part should be firmly connected. Tighten the connection part between the lamp head and the lamp body, and should not loosen; the whole lamp should not be shaken by hand.

In addition, consumers should pay attention to observe whether the light is normal and even after the lamp is energized during use. At the same time, the lamp should have no obvious black spots, and the illuminator has no flicker. Energy-saving lamps and LED lamps should not be too hot under normal working conditions, otherwise it will affect the service life. At the same time, when the energy-saving lamp is lit, the two ends of the lamp are black, and the filament is red or shiny, indicating that the energy-saving lamp has different quality problems.

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