LED lighting is growing in popularity. The number of Russian manufacturers of LED lamps close to a hundred. Unfortunately, some of them did not hesitate to deceive the buyer, at the same time discrediting other manufacturers. After all, the buyer fails bought some lamps, then be afraid to buy the other.
Here are two lamps "housekeeper." Judging from the pictures, the buyer should understand that they consume 5 watts, and light as 60-watt incandescent bulbs.
Deception already begins to information given on the packaging. Both lamps fine print stated: "Luminous flux: 340 lm."
That's only 340 lumens is not the equivalent of 60 watts, but only 40. But that's not all hype. Testing both lamps.
Instead of the promised 5 watts in "candles" 4 W, and "ball" is only 3.9 watts. Luminous flux - 283 and 231 lm. These light bulbs as a 25-watt incandescent bulb, and the manufacturer promise equivalent of 60 watts.
Another example - two lamps "Kosmos". The manufacturer promises equivalent of 75 W at the 7-watt bulb and 60 watts for 5 watt candle.
Already-fetched, is not it? We look very fine print on the back of the box.
Candle - 340 lm (actually the equivalent of 40 W), the ball - 540 lumens (equivalent to 60 W). Lied already on the box. Measure.
Candle Power 3.8 watts instead of 5 watts. Power 5 W bulb instead of 7 watts. Luminous flux at the candle only 242 lumens, at the ball - 422 lumens. They promised that the bulb will shine as 60 watts and 75 watts, and indeed shine as 25 watts and 45 watts.
Sometimes, manufacturers cheating differently. Here the lamp start. The packaging indicated 7 W, equivalent to 60 W, 560 Lm.
560 lm really corresponds to the equivalent of 60 watts (probably why the manufacturer and put this inscription on the front of the box and wrote it in large print). Measure.
Oops. Instead of only 7 W 5.6 W, and instead of only 560 lumens 332 lumens. Light that the assurances of the manufacturer should shine as a 60-watt incandescent bulb, shines as a 40-watt.
Unfortunately, not controlled LED lamps have been marketed in Russia. By GOST P 54815-2011 measured initial luminous flux LED lamps must be at least 90% of the rated luminous flux. But many GOST just spit.
Lies the power and brightness that's not all. The market can find a large number of lamps with a strong pulsation visible light (this can lead to fatigue) and lamp with a low color rendering index (CRI), which leads to the fact that the color of objects illuminated by such lamps, look unnatural.
Before buying LED lamps study the results of their testing lamptest.ru. Even if there is no specific model you want to buy a general opinion about the manufacturer can be on other models. Often, the manufacturer of the lamp is quite good, but you need to enter "an amendment to the brightness of the" buying lamps with a margin of brightness. For example from the same brand housekeeper, Space and start many lamps are quite decent.
Do not be fooled!
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