"LED Stand, Differences in Key Performance Such as Illuminance Uniformity by Brand"

Some Products Fail Electromagnetic Compatibility Standards

Some LED stands sold on the market were found to be non-compliant with electromagnetic compatibility standards. Additionally, energy efficiency varied by nearly twofold between products.

On the 28th, the Korea Consumer Agency announced that these findings were confirmed after testing the quality and performance of LED stands from 12 brands. The products tested included No Brand (PL-2200WH), Samsung Electronics (SI-GM9C10A1A2D), Philips (9290032130), Samjeong (SL-2300), Bandi (T500), Prism (PL-2990BK), Nexover (NXL-3000), Duplex (DP-031LS), Leto (LLS-01), Lumiann (LL-A013), Muas (MLW5), and Britz (BE-LED50).

When measuring the illuminance at the center of the surface 40 cm below the light source, six products including Samsung Electronics and Philips met the Korean Industrial Standards' maximum recommended illuminance of 1500 lx (lux) or less. Illuminance uniformity was relatively excellent in two products, Leto and Bandi, while No Brand and Prism were at an average level. Eight products, including Nexover and Duplex, showed good levels.

Regarding flicker, 10 products except for Leto and Nexover showed almost no flickering, indicating relatively superior quality and performance. Prolonged exposure to lighting with severe flickering or subtle trembling can increase eye fatigue and cause headaches. For color rendering index (CRI), which measures color reproduction, three products?Duplex, Britz, and Philips?were relatively excellent, while nine products including Nexover and No Brand had CRI values above 80, indicating good levels.

In the lifespan performance test, which checks brightness (luminous flux) changes after 2000 hours of use, all 12 products maintained a luminous flux retention rate of over 90%, meeting Korean Industrial Standards performance criteria. There were no issues found in leakage current, conduction safety, or photobiological safety tests for any products. Energy efficiency was highest in the Muas product at 82 lm/W (lumens per watt) and lowest in the Prism product at 42 lm/W, showing a maximum difference of 1.9 times between products. Annual electricity costs ranged from 1,400 to 2,400 KRW per product, which is relatively inexpensive.

In electromagnetic immunity tests, two products, Duplex and Samjeong, experienced abnormalities such as power shutdowns, rendering them non-compliant with electromagnetic compatibility standards. Two products, Bandi and Britz, were found to have incorrect or missing labeling (certification numbers) as required by the Electronic Appliances Act, indicating a need for improvement. The Consumer Agency recommended improvements to the sellers, and most have reportedly completed the necessary actions.

The Consumer Agency stated, "We will continue to provide safety and quality comparison information on lighting products and environmental information to promote eco-friendly consumption culture in order to support consumers' rational consumption habits."

This content was produced with the assistance of AI translation services.