LED lamps Gauss Basic

Recently, Gauss Basic LED lamps have appeared on sale. I tested and studied seven models.

Gauss is one of the first brands of LED lamps that appeared in Russia, which is probably why it has become one of the most popular.

Gauss always had two series of lamps - the usual ones in black boxes and the economical series “Elementary” in white boxes. Now there is a series of Basic.

On all the lamps in the black boxes, the color rendering index is CRI (Ra)> 90 (this is not true, in fact 80-86), on the lamps in the white boxes the color rendering index is Ra> 80 (this is also not true, in fact 71-77) .

Another feature of Gauss is that most “warm” lamps have a color temperature of 2700K, while most non-filament lamps have a temperature of about 3000K. Filament lamps were only available in black boxes.

The Gauss Basic series has both conventional and filament lamps. Interesting, but on the official website about this series not a word.

On the package of lamps (both conventional and filament), Ra> 80 is indicated, the voltage range is 180-240 V, the service life is 15,000 hours, 1 year warranty (for filament 25,000 hours and 2 years). Stated lack of ripple.

The measured color rendering index for non-filament lamps turned out to be 72-75, for filament lamps 82. Filament lamps are built on linear drivers, so of course they will work at a voltage of 180 V, but they "filled up". Two bulb lamps 9.5 W and 13.5 W are also built on linear drivers, but their brightness decreases by 5% when the supply voltage decreases to 188-198 V, so that they more or less fit into the 180-240 V range.

The luminous flux and the equivalent power of an incandescent lamp for all lamps almost corresponds to the declared, and some even slightly exceeds the values ​​indicated on the package.

Power is traditionally overstated by 1-23%.

The light ripple coefficient of all lamps does not exceed 0.5%.

All lamps work correctly with a switch having an indicator (do not light up and do not flash when the switch is off).

According to the inscriptions on the packaging, non-filament lamps were made at the Leedarson Lighting factory (the largest and most famous Chinese factory making lamps for IKEA, OSRAM and many others). Filament at the Shandong Prosperous Star Optoelectronics factory.

The results of my measurements.

Reports on lamps 1034126 (candle 5.5 W) and 1041125 (filament candle 4.5 W).

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 with Robiton PM-2, pulsation with Uprtek MK350D. The minimum operating voltage, at which the luminous flux was reduced by no more than 5% of the nominal, was measured using the Lamptest-1 instrument, the Stabil Instab 500 stabilizer, and the Suntek TDGC2-0.5 LATR. Before measurements, to stabilize the parameters of the lamp, they were heated for half an hour.

Apparently, Gauss Basic non-filament lamps are no different from Gauss Elementary. Neither of these I recommend buying in the first place because of the low color rendering index.

Gauss Basic filament lamps most likely differ from Gauss in black boxes only in the warranty period (2, not 3 years) and a slightly lower price.

All Gauss lamps on Lamptest.ru: lamptest.ru/search/#&brand=Gauss

© 2020, Alexey Nadezhin