July 16, 2019 at 20:28New generation high-power LED lamps
Powerful LED lamps appeared, in which the phosphor is applied to the bulb from the inside. I studied and tested a new generation of lamps.
Conventional LED lamps use white LEDs or COB assemblies, in which LEDs that glow with blue light are coated with a chemical - a phosphor that turns blue light into white.
In Uniel Profi lamps, the phosphor is not applied to the LEDs, but to the lamp bulb. This technology has several advantages:
The downside of technology is that much more is needed for a phosphor, and it is not cheap.
Uniel Profi lamps are designed for lighting industrial premises, warehouses, and other facilities where powerful light sources are required.
I tested all four lamps of the Uniel Profi series:
LED-MP200-50W-4000K-E27-PH ALP06WH - 50 W, 6500 lm, E27 base, color temperature 4000K;
LED-MP200-50W-6000K-E27-PH ALP06WH - 50 W, 6500 lm, E27 base, color temperature 6000K;
LED-MP200-80W-4000K-E40-PH ALP06WH - 80 W, 10000 lm, E40 base, color temperature 4000K;
LED-MP200-80W-6000K-E40-PH ALP06WH - 80 W, 10,000 lm, E40 base, color temperature 6000K.
An ordinary incandescent lamp in the photo will help to evaluate the impressive size of powerful lamps.
Luminous flux, color temperature, and color rendering index were measured using a two-meter integrating sphere and an Instrument Systems CAS 140 CT spectrometer, power consumption and power factor were measured with a GW Instek GPM-8212 instrument, and ripple with a Uprtek MK350D instrument. Before measurements, to stabilize the parameters of the lamp, they were heated for half an hour.
The results of measuring the parameters of 80-watt lamps.
Despite the fact that the actual power (75.1 and 76.3 W) turned out to be slightly lower than the declared one, the luminous flux above the declared one was 10695 and 10715 lm. The lamps have a very high efficiency - 142.4 and 140.4 lm / W.
The results of measuring the parameters of 50-watt lamps.
Actual power is slightly less than declared - 45.4 and 45.7 W, the measured luminous flux was also slightly less than declared - 6244 and 6296 lm, but it is only 3-4% less, which is quite acceptable. Efficiency 137.5 and 137.8 watts.
For use in production, it is very important that the power factor (aka power factor, aka cos cos) is high. For 80-watt lamps, it is 0.97, for 50-watt - 0.95. These are great results.
There is practically no ripple in light (for 50-watt lamps, the ripple coefficient is less than 0.3%, for 80-watt lamps about 1%).
The color rendering index CRI (Ra) is 72.1-72.5. This is enough for industrial premises where Ra should be above 70 according to Ra standards (I recall that Ra over 80 is desirable for home lighting).
In a manufacturer's online store, 50-watt lamps cost 2,805 rubles, 80-watt lamps cost 4,127 rubles.
Thanks to the use of remote phosphor technology, Uniel Profi lamps have high efficiency and greater durability compared to conventional LED lamps. The manufacturer claims a life of 35,000 hours (four years of continuous operation) and, unlike most household lamps, these are very real numbers. Moreover, it is quite possible that lamps of this design will last much longer.
© 2019, Alexey Nadezhin
Conventional LED lamps use white LEDs or COB assemblies, in which LEDs that glow with blue light are coated with a chemical - a phosphor that turns blue light into white.
In Uniel Profi lamps, the phosphor is not applied to the LEDs, but to the lamp bulb. This technology has several advantages:
- the phosphor does not fade from heating and the lamps last much longer without changing color characteristics;
- lamps have higher efficiency.
The downside of technology is that much more is needed for a phosphor, and it is not cheap.
Uniel Profi lamps are designed for lighting industrial premises, warehouses, and other facilities where powerful light sources are required.
I tested all four lamps of the Uniel Profi series:
LED-MP200-50W-4000K-E27-PH ALP06WH - 50 W, 6500 lm, E27 base, color temperature 4000K;
LED-MP200-50W-6000K-E27-PH ALP06WH - 50 W, 6500 lm, E27 base, color temperature 6000K;
LED-MP200-80W-4000K-E40-PH ALP06WH - 80 W, 10000 lm, E40 base, color temperature 4000K;
LED-MP200-80W-6000K-E40-PH ALP06WH - 80 W, 10,000 lm, E40 base, color temperature 6000K.
An ordinary incandescent lamp in the photo will help to evaluate the impressive size of powerful lamps.
Luminous flux, color temperature, and color rendering index were measured using a two-meter integrating sphere and an Instrument Systems CAS 140 CT spectrometer, power consumption and power factor were measured with a GW Instek GPM-8212 instrument, and ripple with a Uprtek MK350D instrument. Before measurements, to stabilize the parameters of the lamp, they were heated for half an hour.
The results of measuring the parameters of 80-watt lamps.
Despite the fact that the actual power (75.1 and 76.3 W) turned out to be slightly lower than the declared one, the luminous flux above the declared one was 10695 and 10715 lm. The lamps have a very high efficiency - 142.4 and 140.4 lm / W.
The results of measuring the parameters of 50-watt lamps.
Actual power is slightly less than declared - 45.4 and 45.7 W, the measured luminous flux was also slightly less than declared - 6244 and 6296 lm, but it is only 3-4% less, which is quite acceptable. Efficiency 137.5 and 137.8 watts.
For use in production, it is very important that the power factor (aka power factor, aka cos cos) is high. For 80-watt lamps, it is 0.97, for 50-watt - 0.95. These are great results.
There is practically no ripple in light (for 50-watt lamps, the ripple coefficient is less than 0.3%, for 80-watt lamps about 1%).
The color rendering index CRI (Ra) is 72.1-72.5. This is enough for industrial premises where Ra should be above 70 according to Ra standards (I recall that Ra over 80 is desirable for home lighting).
In a manufacturer's online store, 50-watt lamps cost 2,805 rubles, 80-watt lamps cost 4,127 rubles.
Thanks to the use of remote phosphor technology, Uniel Profi lamps have high efficiency and greater durability compared to conventional LED lamps. The manufacturer claims a life of 35,000 hours (four years of continuous operation) and, unlike most household lamps, these are very real numbers. Moreover, it is quite possible that lamps of this design will last much longer.
© 2019, Alexey Nadezhin