The carousel stores selling LED lamps own brand "Year Round" (not to be confused with ashanovskim "every day"). I bought them and tested.
In the shop there were five types of bulbs: pear E27 6, 8, 10, 12 W and E14 candle 6 watts. All with warm light 3000K. Shestivattnye pears I did not take.
Information on the packaging of lamps bit: not specified warranty period (reference service on the phone said that there is no guarantee at all, not sure if it is legal), there is no information about the index color, and line voltage is specified only in the lamp base, and in the article (and the one who came up with the inscriptions and articles, was not aware that the standard supply voltage in Russia is not 220, and 230 volts. On the package indicated power only, the luminous flux, color temperature, energy efficiency and service life of 25,000 hours. For information about the power of an incandescent bulb equivalent can only be found in a comparison table with incandescent lamps.
Lamp, bought in December 2018, were produced in October and December 2017.
Luminous flux, color temperature and color rendering index are measured using and a two-meter integrating sphere spectrometer Instrument Systems CAS 140 CT, The angle of the lighting and appliance consumption characteristics Viso Light Spion, The power consumed by the device Robiton PM-2Pulsation device Uprtek MK350D. The minimum operating voltage at which the luminous flux is not reduced by more than 5% from the nominal, measured with the device Lamptest-1, stabilizer Calm Instab 500 and Latro Suntek TDGC2-0.5. Before the measurements to stabilize the lamp parameters were heated for half an hour.
The measurement results are:
There is no lamp ripple (this is good), thanks to the pulse driver, they work with a significant decrease in voltage without lowering the brightness (minimum voltage of 115-150 V). In there lies a power unlike many Russian brands of lamps, these lamps - it almost relevant statements and even the above statement from the three equivalent incandescent lamp power of four lamps. Luminous flux in all three "pear" is also slightly above statement, and "candle" he was on 17% less than the stated amount. Color temperature is also close to the application.
With switches having an indicator lamp can not work (flash, when the switch is off).
And now the bad news. Two lamps color rendering index was higher than 80, and the other two about 73. On the package, as I wrote above, this parameter is not written anything and there is a suspicion that those who We ordered these lamps in China, did not know about this option, as the Chinese put those LEDs have been. This may mean that the other party can be anything you want and there is no guarantee that the candle "All year round", not made in December 2017, will have a CRI (Ra) of greater than 80.
On the one hand cheap lamps (81-109 rubles) and they declared parameters are met almost no pulsation and used good driver, on the other hand, I can not recommend them to buy because of the unpredictable color rendering index and lack of guarantees.
© 2019 Alex Nadozhin