Recently I talked about the new technology of LED lamps Crystal Ceramic MCOB (http://ammo1.livejournal.com/696078.html). The range of the Russian brand X-Flash bulbs were first made by this technology.
BC series includes four lamps:
46959 XF-E27-BC-P-6W-3000K-220V - 6W, warm light.
46966 XF-E27-BC-P-6W-4000K-220V - 6W, white light.
46973 XF-E27-BCD-P-10W-3000K-220V - 10 W, dimmable, warm light.
46980 XF-E27-BCD-P-10W-4000K-220V - 10 W, dimmable white light.
A large number of low-power LEDs in these lamps arranged in a circle on the plate of a transparent nanoceramics. LEDs and phosphor plate is covered on both sides, thanks to the light emitters both forward and backward, and the lamp gives a very large angle of illumination.
In a 6-watt bulb uses 56 LEDs. The 10-watt LED lamp 96, and they are arranged in two concentric circles.
I measured the parameters of lamps with instruments viso LightSpion and Lupine.
10-watt lamps operate properly with the switches having the indicator. 6-watt flash when the switch is turned off.
10-watt lamps can change the brightness over a wide range, but do not work with all dimmers. For example, IKEA lamps with dimmer starts flashing. When adjusting the brightness of the light pulsation does not exceed 6%. By reducing the brightness of the lamps emit a very quiet sound that can not be heard at a distance of 10 cm from the lamp.
When working without a dimmer light level ripple at all lamps is very low - 1.3-1.4%.
The luminous flux and the equivalent power is lower than stated in the box. Apparently, the Chinese contract manufacturer underestimated the power of the lamps to increase their durability. 6-watt lamp light as 55-watt incandescent lamp, 10 watt as 85-90 watt. This should be considered when buying lamps. Nevertheless, the efficiency of the lamps is extremely high: 90-108 lm / W.
All lamps have a high CRI 81.6-83.6, which allows to recommend them for use in living rooms.
Table lamps reproduce colors with warm light:
color reproduction table lamps with white light 4000K:
I experienced a 10-watt bulb in the most difficult conditions: 1000 hours, almost one and a half months in a row, it was burning in the ceiling of the fully closed. The lamp body is heated to 66.6 °.
The imager showed the maximum temperature on the LEDs 140 °. The temperature is unevenly distributed, as the lamp was on her side.
Of course, this is a very high temperature, but for 1000 hours lamp has not ceased to work and not degraded in brightness. Perhaps the imager is wrong with the measurement due to the fact that the emissivity of the phosphor differs greatly from the 0.95 established.
Due to radiation from both sides of the plate, the lamps have a very wide angle of illumination.
As for the rest of their lamps, X-Flash declares a very long life - 50,000 hours and provides a guarantee of 5 years. The lamps are sold in its own online store products, so with the exchange in the event of lamp failure should be no problems.
All parameters of the tested lamps, as well as all the rest of my tests look at the LED lamps http://lamptest.ru.
© 2016 Alex Nadozhin
The main theme of my blog - Equipment for human life. I write reviews, share experiences, talk about all sorts of interesting things. And I'm doing stories of the interesting places and tell about interesting events.
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