In a store called “Shanghai Xiaotong Lightingâ€, law enforcement officers randomly selected several light bulbs and used power testers on site to test the performance indicators of LED bulbs. According to GB/T 24908-2014 "Permanent Lighting Self-ballasted LED Lamps Performance Requirements", the power of LED bulbs should not be less than 80% of its nominal power, not more than 110% of its nominal power (ie, For a 10 watt bulb, the qualified power should be within the range of 8 watts to 11 watts).
However, in the tests, except for a qualified lamp, the other tested products failed to meet the standards. Such as a product named LED ball gun, its nominal power is 5 watts, and the initial detection power is only 3.2 watts. Another product named loud lighting, nominally 7 watts, is actually only 2.54 watts. Nominally 20 watts, actual 8 watts; nominal 36 watts, actual 7.3 watts ... a bulb lamp with the most disparity, nominal power 50 watts, actually measured only 14 watts. "This is only a preliminary test. Because the on-site voltage is unstable, the power measured in the laboratory will be even lower."
"The threads of these lamps are not tightly screwed and the interchangeability does not match." On the other hand, experts use the instrument "gauge" to test the safety of LED lamps. The so-called interchangeability is GB 24906-2010 "Safety Requirements for Self-Balancing LED Lamps Above 50 V for General Lighting", that is, whether the bulb can be effectively fixed. If not, it will cause poor contact, resulting in severe leakage or leakage.
According to Lin Jigang, a senior engineer at the National Electric Light Source Quality Supervision and Inspection Center (Shanghai), “If the product is qualified, you can see the lamp foot slightly with the level-view gauge, indicating that it has been fixed. Otherwise, the lamp foot cannot be seen.â€
Zhang Jiadong, deputy chief of the first team of the Law Enforcement Administration of Shanghai Bureau of Quality Supervision, pointed out that most of the LED bulbs sold in the store were inconsistent with the virtual standard power and interchangeability, failing to meet the requirements of national mandatory standards. It is reported that law enforcement officers on the spot seized unqualified LED bulbs are divided into 2 brands, 9 specifications, totaling about 600, the above products will be sent to the laboratory for further sampling inspection.
Combined with daily inspection experience, Zhang Jiadong reminded consumers that when selecting LED bulbs, they should not be petty. In particular, some bulbs with significantly lower prices are often difficult to guarantee. "We checked the store's purchase receipts and invoices and found that its 5-watt bulb purchase price was only 1.65 yuan, the quality can be imagined." Zhang Jiadong said.
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