Test of e27 navigator LED lamps. Navigator LED lamps. Best buys in this category

In the summer I launched a project to test LED lamps lamptest.ru. I planned to test 10-15 lamps per month, but it turned out completely differently. 557 lamps have already been tested (of which 17 are fluorescent, 59 are incandescent, and all others are LED). Such a large number of lamps were tested thanks to successful public fundraising (crowdfunding), which continues to this day.

Today I will tell you why I started this project, what will happen to it next, and I will ask you to answer questions, the answers to which will help determine how the project will develop.

When I first encountered household LED lamps, I realized that not all of them are good. I, like many, thought then that the light bulbs in Chinese online stores were the same as those sold in Russia, only cheaper. After several orders, I began to understand: something was wrong here. The Chinese light bulbs flickered unpleasantly, gave off a nasty greenish light and shone much dimmer than promised. Then, I did not yet know that the pulsation of light from LED lamps depends on the electronic driver board hidden in the lamp base; the quality of light is largely determined by the color rendering index (CRI), which for most lamps from Chinese online stores is very low, but with real power and brightness, Chinese sellers can lie two or three times.

I started looking for information about the real parameters of LED lamps, but there was very little of it on the Internet: in order to measure light parameters you need professional and very expensive equipment, which is only available in certified laboratories, and they do not have the right to share the results of their tests.

Fortunately, at the beginning of 2014, fate brought me together with a company that had a device for testing the parameters of Viso LightSpion lamps. They bought the device at a lighting exhibition in Singapore and, apparently, there is only one in Russia. We discussed with the owners of the device how great it would be to start testing all the lamps that are sold and publish these honest results. They offered to come to them once a month and test the light bulbs, which I started doing in February 2014. At first, all data was simply recorded in an Excel table. Then we started thinking that it would be great to make a website with convenient filters for viewing the results.

A wonderful programmer from Nizhny Novgorod, Sergei Andreev, responded to my cry for help and created a fast, beautiful and convenient website LampTest.ru, which was launched on June 24, 2015.

The device measured all parameters of the lamp except one - light pulsation. Fortunately, the developers of the domestic Lupine device provided our project with their device.

Most recently, Andrey Karasev joined the project team, who helps process the results and enter them into the database.

So, today 557 lamps have been tested. I wanted to make an anniversary post after the 500th light bulb, but it didn’t work out. :) I tested LED lamps from 56 brands, and at least 5 types of lamps from 30 brands were tested. These brands are: artpole, ASD, Camelion, Diall, Ecola, Gauss, IEK, IKEA, Jazzway, Kreonix, Lexman, Madix, Navigator, OSRAM, Philips, REV, Robiton, Smartbuy, Supra, Thomson, Uniel, Wolta, X- Flash, Space, Lisma, Nanolight, Online, Start, Economy, Era.

Unfortunately, it may happen that soon I will not be able to use the Viso LightSpion, so I am now trying to test as many lamps from as many brands as possible. I don’t want to guess what will happen when I lose access to the device, I hope there will be a way out.

I created project groups on Facebook https://www.facebook.com/lamptest.ru and VKontakte https://vk.com/lamptest. In groups, I will talk about all the news of the project - what I am testing, what changes are happening on the site, what interesting things were discovered, and many other interesting little things that go beyond the scope of large blog articles. Add yourself on the social network that is most convenient for you.

I tried to test mainly lamps with “warm” light 2700-3000K, since I think that such light is more suitable for the home. I think there is no point in testing low-power lamps. It seems to me that it makes sense to test ordinary pear lamps with an E27 base with an equivalent of at least 60 W, “candles” and “balls” with an equivalent of at least 40 W, and spotlights with an equivalent of at least 35 W.

Today I want to ask you what lamps you are interested in so that you can understand which lamps to buy for testing first.

What types of LED lamps are you personally interested in?

219 (26.2 % )

Spark plug E14

133 (15.9 % )

Spark plug E27

72 (8.6 % )

Ball 45 mm E14

76 (9.1 % )

Ball 45 mm E27

95 (11.4 % )

Soffit R39 E14

17 (2.0 % )

Soffit R50 E14

30 (3.6 % )

Soffit R63 E27

26 (3.1 % )

18 (2.2 % )

Soffit GU5.3 230V

34 (4.1 % )

Soffit GU5.3 12V

23 (2.8 % )

9 (1.1 % )

Microlamp G9

33 (3.9 % )

Microlamp G4 230V

18 (2.2 % )

Micro lamp G4 12V

33 (3.9 % )

Lamps with what wattage equivalent are you interested in?

Pears 40 W or less

40 (4.0 % )

Pears 60 W

116 (11.5 % )

Pears 75 W

148 (14.6 % )

Pears 95 W

135 (13.3 % )

Pears 100 W or more

163 (16.1 % )

For this review We have selected several LED lamps with an E27 base that fall into the category of “replacing the most common pear-shaped incandescent lamp at about 100 W.” Given the current state of progress in the development of LEDs and drivers for them, this corresponds to a power of 12-15 W for an LED source.

Specifications and price

Characteristic	Lamp
Brand	Lexman	Osram	Philips	Supra	Supra	Volta
Model or barcode	12-A60 E27/30 R	Led Star Classic A 100	8718696481868	SL-LED-PR-A60- 13W/3000/E27	SL-LED-PR-A65- 15W/3000/E27	25Y60BL12E27
The abbreviation adopted in the article	Lexman	Osram	Philips	Supra-13W	Supra-15W	Volta
Rated voltage, V	220-240	220-240	220-240	170-240	170-240	220-240
Power, W	12	12	13	13	15	12
Luminous flux, lm	1055	1055	1400	1155	1350	1200(1150)
Luminous efficacy, lm/W*	88	88	108	89	90	100
Color temperature, K	3000	2700	3000	3000	3000	3000
Color rendering index, Ra	80	80	80	≥80	≥80	≥80
Service life, h	25 000	25 000	15 000	30 000	30 000	30 000
Number of on/off cycles	>30 000	100 000	50 000	N/A	N/A	N/A
Diameter, mm	65	60	61	60	65	60
Height, mm	117	115	107	112	130	108
Price**,	556	695	491	279	369	268
* Luminous efficacy is calculated by dividing the rated luminous flux values ​​by power ** Approximate retail price at the time of testing

Short description

The Lexman brand, judging by the information on the box, is closely related to the Leroy Merlin company. Actually, it was there (or rather, in the supermarket of the same name) that this lamp was purchased. The lamp is packed in a box made of thick cardboard, inside of which there are fixing inserts for the base and bulb made of the same cardboard. The outer surface of the box is laminated, has a colorful design, its edges contain useful and not so useful information for the end consumer, and there is also a photograph of the product itself. From what is shown on the box and not included in the table above, it is worth noting the heating temperature is 55 °C, the operating temperature range is from −30 to +85 °C, the time to reach 95% brightness is 2 s, the glow angle is 300° and 5 year warranty. The inscriptions on the lamp itself are painted in silver, and therefore reflective, and are slightly blurred, but everything you need is there, including a symbol prohibiting use with dimmers.

The bulb is milky white, dense and, as you can see, rounded beyond a hemisphere, which promises a wide angle of illumination.

Osram is a German brand with a very good reputation. However, the lamp, like all others participating in this testing, was manufactured in China. The lamp is packaged in a thin cardboard box with a semi-glossy exterior. There are no fixing inserts. There is a lot of useful information on the edges of the box, there is a photo of the lamp itself. From what is shown on the box and not included in the table above, it is worth noting the operating temperature range from −20 to +40 °C, the time to reach 60% brightness - 0.2 s, and a 3-year warranty. The company has a website where this model should, in theory, be presented, but for some reason it wasn’t there. The inscriptions on the lamp itself are clear, contrasting, but small. Everything you need is there, including a symbol prohibiting use with dimmers.

The flask is milky white, has average level transparency, rounded approximately in a hemisphere.

Philips branded lighting products are highly trusted by customers. Personal experience The author confirms this, with the exception of the most ordinary incandescent lamps - but who buys them now? The lamp is packed in a box made of thin cardboard, semi-glossy on the outside, inside of which there is an insert made of thin corrugated cardboard that fixes the base. There is an eyelet for hanging in a display case. There is a lot of useful information on the edges of the box, there is a photo of the lamp itself. From what is shown on the box and not included in the table above, it is worth noting installation recommendations (use in open lamps, etc.) and the indicated operating voltage range of 170-240 V (apparently, the lamp will work from 170 to 220 V may, but its performance is not guaranteed). I was able to find one for this lamp on the manufacturer's website. True, there is clearly a different modification depicted there. According to information from the website, the glow angle is 130°. Warranty information for this type Despite all our efforts, we could not find any products. We contacted Philips support for clarification, and the response we received deserves to be presented in full, in its original form and without our comments:

We hereby inform you that there is no legal concept of a “Warranty” for lamps, because lamps may be subject to improper use or exposure to factors beyond the control of the manufacturer.

For lamps there is a concept of “life expectancy” measured in the expected average number of operating hours, under normal conditions up to a 60% probability of lamp failure.

For lamp 8718696481868 this is about 15,000 hours (or 15 years of service when using the lamp on average 3 hours a day). You can request a replacement lamp if it has lasted less than the specified number of hours.

The inscriptions on the lamp itself are not very clear and lack contrast. The main characteristics are there, but there is no prohibition on use with dimmers - on the contrary, a triangle with a circle at first glance can be mistaken for approval of connection via a dimmer.

The bulb is matte and in terms of its ability to scatter light, it is the least dense among the participants in this test. The flask has the shape of a slightly flattened hemisphere with a rounding just below the equator.

The Supra brand belongs to Russian company. The lamp is packaged in a box made of thick cardboard, inside of which there are fixing inserts for the base and bulb made of the same cardboard. The box is well designed, on its edges there is Technical information, a photograph of the lamp itself, and even a transparent insert through which part of the lamp can be seen inside. In retail locations, sellers can release the hidden pendant and hang the lamps on the display/stand. From what is shown on the box and not included in the table above, it is worth noting the operating temperature range from −25 to +40 °C, a glow angle of 240° and a 2-year warranty. The box with Supra lamps includes a printed manual, which is also a warranty card:

The box, its design, the inscriptions on it and the contents are similar for both Supra lamps from this test, so we will not repeat it below. Manufacturer's websites - and; You can find some things related to current lamp models there, but not very much. The inscriptions on the lamp itself are clear and contrasting. The main characteristics are there, but there is no prohibition on use with dimmers.

The flask is milky white and has an average level of transparency. Its shape is practically a sphere, truncated slightly below the equator.

The inscriptions on the lamp itself are clear and contrasting. The main characteristics are there, but there is no prohibition on use with dimmers.

The flask is milky white and has an average level of transparency. Its shape is practically a sphere, truncated just below the equator.

The Wolta brand appears to belong to a Russian company specializing in lighting solutions. The lamp box is the most unusual in this test, as it is made of transparent plastic. There is a lot of transparent area left on the walls, so there is no need to depict the product - it is visible as is. Inside the box there are fixing inserts for the base and flask made of the same transparent plastic. The box is well designed and has technical information on its sides. In retail locations, sellers can hang the box from the existing eyelet. From what is shown on the box and not included in the table above, it is worth noting the assurance that the pulsation coefficient does not exceed 3% and a 3-year warranty. The Wolta lamp box comes with a printed manual and warranty card:

The inscriptions on the lamp itself are non-contrasting. The main characteristics are there, but there is no prohibition on use with dimmers.

The flask is milky white and has an average level of transparency. Its shape is practically a sphere, truncated slightly below the equator. There is a price on the company’s website, and the price indicated there is the same as the one at which we bought the lamp in the store.

Test results

Start schedules:

The graphs below will help you evaluate brightness modulation. In fact, only in the case of Osram and Philips lamps can we state the presence of any significant modulation with a frequency of 100 Hz. For them, you can calculate the pulsation coefficient (the difference between the maximum and minimum illumination values ​​during the period of its fluctuation, divided by twice the average illumination value for the same period and multiplied by 100%), which is usually used to assess the flicker of gas-discharge lamps when powered by alternating current. In the case of Osram it is 7.7%, and for Philips it is 12.1%. According to Russian standards, of the participants in this test, only the Philips lamp cannot be used in some cases (for example, in rooms for working with displays and video terminals, in computer rooms), since its pulsation coefficient exceeds 10%. And still, even in her case, subjectively no flickering is visible under any circumstances.

Energy characteristics

The power factor of all lamps was less than 0.9. This is not very good, but for everyday use it is not important, since LED lighting is definitely not the main consumer in terms of power required, and the user pays only for active power. The Wolta bulb gets the hottest. It definitely should not be installed in poorly ventilated lamps. Note that when measuring the temperature, the lamps were installed in an open socket with the bulb facing up and kept turned on in this position for 10 minutes. The housings of all these lamps are made of plastic and have a smooth surface, so they cannot serve as effective heat sinks on their own. As you can see in the heat images below, the maximum heating zone (the brightest area) for all six lamps is located in approximately the same place.

Luminous flux, luminous intensity and luminous efficiency:

The luminous flux turned out to be the highest in the Philips lamp, it is even 8.5% higher than the passport value (however, this is the permissible error when measuring light characteristics). This lamp is also the most efficient; the others are significantly inferior to it, and they can be classified into the same group with an efficiency of about 100 lm/W.

Light patterns:

At a constant zenith angle (when the light sensor moves around the axis of the lamp), the glow of these lamps changes little, that is, they shine evenly to the sides, so we do not provide diagrams for this direction. This is not true in the case of a fixed azimuth angle and movement with changing zenith angle: these lamps shine forward from the socket to the top of the bulb more than sideways and backward. The diagrams are plotted in %% of the maximum illumination, which does not necessarily coincide exactly with 0° on the diagram, that is, it does not necessarily coincide with the axis of the cartridge in the direction from the base to the bulb. This is mainly due to the slight curvature that occurs at the place where the socket is attached to the lamp body. In this height test, the center of the lamp was taken to be the point where the diameter of the bulb had its maximum value. The zenith angle varied from 0° to 150° in both directions. It can be seen that the widest radiation pattern is found in the Lexman lamp, and the most directional glow is in the Osram and Philips lamps. The directional characteristic is the angle within which the light intensity is 50% or more of the maximum value (the so-called glow angle). For the tested lamps it is shown in the table below:

Despite the significant scatter in the luminous angle values, all of these lamps are not point-type sources, however, it is still advantageous to place them so that they are directed at the place that needs to be illuminated, since they shine brighter in the axial direction.

Colorimetric characteristics

Lamp	Color temperature, K	ΔE	Color rendering index, Ra
Lexman	2750	3,7	80
Osram	2520	1,6	85
Philips	2860	2,5	82
Supra-13W	2720	6,2	71
Supra-15W	2760	6,2	72
Volta	2750	1,7	80

The color temperature in all cases turned out to be lower than the declared values, the light was a little “warmer”, which in this case is not critical. The deviation from the blackbody spectrum (parameter ΔE) even in the worst case is significantly less than 10, so the color balance of all tested lamps is close to natural light. All six lamps have a color rendering index of at least 70, which is good, and four representatives have a color rendering index of 80 or higher, so these lamps can be used in cases where the way the colors of things look under the light of these lamps is of great importance.

conclusions

If we again compare the obtained characteristics of the lamps participating in this test with the characteristics of LED lamps from the previous test, then it is worth noting the increased efficiency, which for this set was at least 95 lm/W. Among the positive trends, it is worth noting the minimal or almost complete absence of significant modulation, that is, flickering, as well as a reduction in the start time to a very small value.

Based on the results of this testing, the prize of our sympathy goes to the Philips lamp with code 8718696481868, since this is the most efficient lamp, comparable in size to an ordinary incandescent lamp in a pear-shaped bulb, and in terms of luminous flux even surpassing this now forbidden light source. Moreover, the price of the Philips lamp is not even the highest of those tested. The only drawback of the Philips 8718696481868 can be considered significant light modulation - however, it is still too small in amplitude for visible flicker. Based on the luminous flux criterion, the Supra SL-LED-PR-A65-15W/3000/E27 lamp can also be considered a replacement for a 100-watt incandescent lamp, but the dimensions of this Supra are already significantly larger, although it heats up less than the Philips. The remaining four full-size 12-watt bulbs produce the same light output as 85-watt incandescent bulbs.

In conclusion, we provide a table for calculating the total cost per unit of light energy. The lower it is, the more profitable the lamp will ultimately be.

The cost of owning a lamp consists of its actual cost and the cost of electricity consumed during its service life. The light energy that a lamp produces is equal to its luminous flux multiplied by its operating time, that is, its service life. By dividing the cost of owning a lamp by the light energy, we get a value that shows how much a unit of light energy costs. It is more convenient to express this cost in kopecks per thousand lumens per hour.

If we take the prices indicated at the beginning of the article, the service life data from the manufacturer, and the power and luminous flux values ​​​​that were obtained in our test, then the most expensive lamp will be the Lexman 12-A60 E27/30 R ( 5,88 cop. per km/h), and the most profitable ones are Supra lamps for 13 and 15 W - 4,59 And 4,53 cop. per km/h, respectively (at a tariff of 3.77 per kW/h).

Let's review the second LED lamp GU 5.3 MR16 from the sestek.ru store. Its main difference is the use of 1 COB LED, instead of SMD elements. This should reduce cost and improve reliability. But at the same time, maintainability deteriorates; the entire COB chip will have to be replaced. BBK lighting equipment is of high quality at a low price, so now I mainly recommend BBK.

• 1. Characteristics
• 2. Chuck GU 5.3
• 3. Dimensions
• 4. Base GU5.3
• 5. Luminous flux
• 6. Use with dimmer
• 7. Filling
• 8. Energy consumption
• 9. Heating
• 10. Ripple factor
• 11. Driver
• 12. Mass
• 13. Packaging
• 14. Summary

Characteristics

The review includes BBK MB74C LED lamp GU 5.3 220V MR16. Due to the small size of the lamp itself, its dimensions are limited. Power of 7W is the maximum for the MR16 case.

I want to pay special attention to color temperature. For most manufacturers in Russia, 4000K is considered neutral white. According to my tests, a color temperature of 4000K still has a yellow tint; a temperature of 4500K is truly white. For this, another plus in BBK’s karma.

	Declared	Measured
Power	7W	7.25W
Light flow	540lm	523lm
Nutrition	220V	220V
Ripple factor	—	1,9%
Colorful temperature	4500K	4500K
Dimensions	50x85	50x79 without legs
Base	GU 5.3
Dimming	No
Frame	MR16
Color rendering index	75+
Luminous angle	60
Material	Aluminum
Life time	30,000
Guarantee	3 years

An indirect way to find out the reliability of the LED GU 5.3 is to evaluate the warranty period. The manufacturer will not provide a long warranty for bad light bulbs; there will be high costs for free replacement under warranty.

If you are interested in lighting dimming, this should be indicated on the packaging. The tested BBK sample says “do not use with a dimmer.”

If you need the most powerful LEDs, then the maximum brightness of 720lm was found in Gauss, but Navigator is also popular.

Cartridge GU 5.3

It is often necessary to install a light bulb in another lamp or chandelier, which has a completely different socket. For this, there are adapters (adapters) for cartridges E14 and E27. But there is a drawback that manifests itself when installed in ceiling lamps. Due to the increase in length, it begins to stick out from the ceiling. If you are not satisfied with this, you will need to change the cartridge directly inside the ceiling.

In the video, a colleague demonstrates an adapter for the E27 socket.

When choosing components for installation, pay attention to the quality of the cartridges. Cheap ones sometimes have poor contact, which over time begins to spark and burn.

Dimensions

Base GU5.3

..

Light flow

Let's measure the luminous flux in a cubic-type measuring device. Also E27 lamps from this model range BBK was tested by a colleague from the lamptest website. ru on professional equipment. Its actual flow turned out to be 10 Lumens higher than stated in the characteristics. In previous measurements of the LED GU5.3 220V on my equipment, the indicator turned out to be 10 lm less than that specified by the manufacturer. This is an excellent result for equipment costing 2,000 rubles, compared to the professional Viso LightSpion complex for 500,000 rubles.

During warming up to operating temperature, the decrease in brightness was:

• 633lm – 523 = 110lm;
• 110lm / 633lm = 17%

But the manufacturer took all this into account and indicated the real parameters on the packaging.

The difference in the luminous flux of an LED in a lamp is also explained separately by the presence of optics and a reflector. Even the most transparent optics lose at least 8% of light.
We also had losses:

• 694lm – 633lm = 61lm
• 61 / 694 = 8.7% light lost.

Use with dimmer

Dimming prohibited

When installing LED lighting, the brightness of which you will adjust, it is preferable to use GU 5.3 LED bulbs at 12V rather than 220V. The disadvantage of dimmable 220V LED lamps is that the ripple factor increases as the brightness decreases. Simply put, they flicker more strongly at a frequency of 100 Hertz, which is not noticeable to the eye, but for some it greatly affects their well-being. For example, after 30 minutes of such lighting, I feel tired and have a headache. Others may tolerate it without any symptoms. According to SanPin, pulsations should not exceed 20% in residential premises, and even less in educational premises.

Filling

Inside the MR16 G 5.3 case there is a 7W COB LED, which is held on by thermal paste and is not screwed in anything. The thermal conductive paste is thick enough to hold it tightly, at first I thought it was glued.

The plastic base GU 5.3 is attached to the aluminum radiator via a thread. If repairs are needed, you won’t have to break anything or unstick it, it just unscrews.

Energy consumption

The power consumption of G 5.3 at 220V was 7.25W, of which 10% goes directly to the driver.

• COB Led diode consumes an average of 6.5W;
• power factor (Power Factor) 50%.

Heat

Warm up the sample for 30 minutes:

• heat COB LED 74°;
• case temperature 60°.

The operating conditions of the diode are very good. Modern diodes are capable of long-term operation at temperatures of 90°-100°. Therefore, the sample must be guaranteed to work the promised 30,000 hours.

Ripple factor

We measure light pulsations with a magical Radex Lupin device. For example, an incandescent lamp has an average of 15%.

• The result is 1.9%, no flickering at 100Hz.

Oscillogram and spectrogram

Driver

The LED power supply is a full-fledged one, not a lightweight version. High-tech yellow tape is used to insulate the MR16 body. Only the name of the driver is strange: “Dark Energy” V1.2, translated as “Dark Energy”. Apparently for use on the dark side of the Jedi force.

Weight

Package

Bottom line

According to the test results, the sample performed excellently. Taking into account the errors of the devices themselves, the characteristics fully correspond to those promised by the manufacturer. For the first time I met light bulbs that are assembled on threaded connections, nothing had to be broken. The assembly is excellent, everything was easily unscrewed and screwed back on, the sample did not lose its presentation.

In terms of cost, I focus on the online store sestek.ru, the prices there are low. Their BBK MB74C G5.3 costs 196 rubles. as of March 8, 2016. Gauss and Navigator cost from 300 rubles.

BBK LEDs have high quality at the same price as competitors. Only most competitors deceive the buyer by inflating the parameters.

LED bulbs Russian brand Gauss was one of the first to appear on the market. Many people consider the lamps of this brand to be among the best and there really are few complaints about them.

Unfortunately, Gauss, producing high-quality lamps, always provided inflated characteristics on the packaging and indicated unrealistic color rendering index (CRI, Ra) values.

Today I will analyze the results of my testing of twenty four lamps Gauss, released in 2017 and 2018.

Lamps are produced in two series - Gauss in black packaging and Gauss elementary in white packaging (cheaper version).

Lamps in black packaging indicate Ra>90, lamps in white packaging indicate Ra>80, but, unfortunately, this is not true. In reality, for lamps in black packaging, the CRI (Ra) is 81-84, for lamps in white packaging - 73-76.

The warranty period for most lamps in black packaging is 3 or 5 years, for elementary lamps in white packaging and for capsule lamps (G4 and G9) in black packaging - 1 year.

On the packaging of most lamps it is written “without pulsation” and this is true, but there are lamps on which this is not written, and an unacceptable 100% pulsation was found there. These lamps are definitely not worth buying.

Luminous flux, color temperature and color rendering index were measured using two-meter integrating sphere and Instrument Systems CAS 140 CT spectrometer, lighting angle and consumption characteristics of the Viso Light Spion device, power consumption of the Robiton PM-2 device, pulsation of the Uprtek MK350D device. The minimum operating voltage, at which the luminous flux decreased by no more than 10% of the nominal, was measured using a Lamptest-1 device, a Stihl Instab 500 stabilizer, a Suntek TDGC2-0.5 LATR and an Aneng AN8001 precision multimeter. Before measurements, to stabilize the parameters, the lamps were warmed up for half an hour.

As can be seen from the table, all lamps have actual power less than declared. Pear lamps of the black series provide 81-85% of the promised luminous flux, however, in terms of the equivalent of an incandescent lamp, they correspond to the declared one.

For some reason, Gauss always specified a color temperature of 2700K for their “warm” lamps, although in fact it is always higher and is about 3100K, the color temperature of lamps with neutral light is about 4000K, and the packaging says 4100K.

The only lamp tested, released in 2018 and with a five-year warranty, is a candle with a stated power of 9.5 W, luminous flux of 890 lm and the equivalent of a 95 W incandescent lamp, which actually consumes 8 W, produces 703 lm and replaces a 70 W incandescent lamp, which for There are still a lot of E14 spark plugs. It is interesting that this lamp has a color temperature of 3000K and in fact it is that way. I hope that in 2018 the color temperature of all lamps began to be indicated correctly.

The actual color rendering indices of all these lamps (CRI, Ra) are 80-82, although the packages indicate “above 90”. These are normal values ​​for household lighting lamps, but there is nothing outstanding in them, as in lamps with a CRI above 90.

Lamps in white boxes from the Elementary series have color rendering indices of 73-76 (and the packaging says “above 80”), but their luminous flux is almost as stated.

All “pears”, “ball” and “candle” work correctly with switches that have an indicator (they do not flash or burn dimly when the switch is off). Three GX3 spots also work correctly, and two of the white series light up dimly when the switch is turned off.

Most lamps contain a built-in stabilizer and their brightness does not change when the supply voltage changes over a wide range. All lamps, except dimmable ones, operate when the mains voltage is reduced to 135 volts, and some operate at lower voltages.

The two GX53 dimmable spots have a ripple factor of about 30%. This pulsation is almost invisible visually, but it is still there. I note that there is no “ripple-free” sign on the packaging of these lamps.

The luminous flux of all tested spots almost corresponds to the declared one.

Gauss capsule microlamps are divided into two “camps”. Those that have the sign “no ripple” actually have a pulsation coefficient of less than 1%, and those that do not have a sign, alas, have a pulsation coefficient of 100% and it is better not to buy such lamps.

The luminous flux of all microlamps is significantly less than the declared one (by 18-38%), and only for the 12-volt G4 microlamp it almost corresponds to the declared one. The color temperature of “warm” lamps, as well as of other types of lamps, is closer to 3000K than to the declared 2700K.

All good capsule lamps (those with 100% pulsation are not worth mentioning) cannot work correctly with switches that have an indicator (they flash when the switch is off).

Based on the test results, the following conclusions can be drawn:

Gauss black series are good lamps, but you need to keep in mind that their actual power and luminous flux are lower than declared, and the actual color rendering index is slightly higher than 80;

Gauss white Elementary series have a color rendering index slightly higher than 70, so it is better not to use them for lighting residential premises;

It is very important to pay attention to the “No ripple” sign on the packaging of Gauss lamps. If it is not there, most likely there will be pulsation, and in the case of capsule microlamps up to 100%.

P.S. Data for all tested Gauss lamps on the Lamptest website.

P.P.S. I will try to test a large number of Gauss lamps from 2018 in the near future.

© 2018, Alexey Nadezhin

Reviews of single lamps are good for everyone, except for the ability to understand which of the lamps in neighboring reviews shines brighter and whether it gives the desired color temperature. Below the cut is a comparison of three different LED lamps in an equal battle.

So, the participants of today's comparison test:

1. Reference sample: Osram Duluxstar Mini Twist fluorescent lamp 24 watt warm spectrum. The actual measured power consumption is 20 watts. The lamp is 2 years old. The photo is on the far right. The price is about 150 rubles.

2. Lamp from the title of the review with. LED warm spectrum type “corn”. Claimed power consumption is 7 watts, actual power consumption is 5.9 watts. Price 6.1$. In the photo, second from the left. By the way, surprisingly durable construction. It came by mail (regular, not EMS) alone, in a small envelope, barely wrapped in one layer of half-shredded bubble wrap. When the postal workers unceremoniously threw the envelope onto the table, a distinct plastic knock was heard. Therefore, when I took the lamp, I was 80% sure that it was already dead. But surprisingly this turned out not to be the case.

3. Lamp with . Cold spectrum LED lamp of the “corn” type. Stated 4 watts, measured 4.6 watts. Price 13.7$. In the photo, second from the right.

4. Lamp with . Half corn LED lamp with 180 degree beam direction. The spectrum is cold. Stated 6 watts, measured 6.5. Price 12.7$. In the photo is the one on the far left. The only lamp from the review on SMD diodes. The plastic lamp base is divided into 2 parts. The part that is adjacent to the metal base is rigidly connected to the metal base. The part that is adjacent to the lamp is rigidly connected to the lamp. And they rotate relative to each other. Those. The twisted lamp can be directed in any way you like. However, a problem may arise in unscrewing the lamp if it is screwed into a lamp where there is no direct access to the static part of the base.

The testing methodology is quite simple. To determine the correct color temperature, we set the white balance to the “sunny” position, the deviation from which into yellowness and blueness is precisely perceived by the human eye. To determine the comparative brightness in a joint photo, we measure the exposure using the brightest lamp with additional manual exposure compensation of -1/3. Many even comparative reviews turn out to be useless due to the fact that their authors set the exposure haphazardly, as a result of which the lamps taken in the photo often turn out to be overexposed. And the excess of luminous flux over dynamic range The camera matrix by 5% and 5 times gives the same white color in the picture, which does not allow correct comparison of different lamps, except perhaps by indirect evidence of the size of the surrounding light spots.

First comparison photo.
2 LED lamps (No. 2 at 9 o'clock and No. 3 at 1 o'clock) with a reference fluorescent lamp (at 5 o'clock). The photo clearly shows that the fluorescent lamp shines at least 2 times more powerful than diode lamps. Cold diode lamp No. 3 shines noticeably brighter than warm diode lamp No. 2. These differences are much more visible to the eye than in the photo. A cold diode lamp is slightly blinding, but a warm one can be viewed without discomfort. Its spectrum is quite pleasant and very similar to the spectrum of warm fluorescent lamp.

Second comparison photo.
All 3 LED lamps. The arrangement is similar to the 1st photo, only instead of a fluorescent lamp there is lamp No. 4. The 4th lamp has more efficient SMD diodes and produces a more directional light output. Looking directly at her at close range is already very unpleasant. A clear champion in brightness, although this is achieved incl. due to directionality.

Another useful thing that can be measured with a camera is the flickering of lamps, which gives an unpleasant strobe effect for the eye. Lamps No. 2 and No. 3 have some pulsation noticeable in the test image. But even in the picture it is clear that the pulsation is not clearly expressed. The stroboscopic effect is not noticeable to the eye. Lamp No. 4 gives a perfectly straight line without a pulse (some jagged edges are visible in the published photo, but these are compression artifacts; they are not present in the original photo).

№2

№3

№4

The fluorescent lamp is still the leader in brightness per unit of lamp cost. If the number of lamps in a chandelier is limited to a small amount (for example, three, as in mine) and you need bright light without too expensive lamps, a fluorescent lamp is the only right choice today (LED lamps of similar brightness cost 30 bucks apiece).

Warm LED lamp No. 2 produces a spectrum that is pleasant to the eye, similar to the spectrum of a high-quality fluorescent lamp. The cheapest lamp in the review, 2 times cheaper than LED competitors. However, it has the weakest light output (although for the same price you can install 2 times more lamps, which will clearly be more efficient). Also the most energy inefficient among LEDs. Apparently just because of the warm spectrum. Great option for a living space if the chandelier allows you to install quite a lot of such lamps.

Cold omnidirectional lamp No. 3 consumes the least electricity, while being the most expensive (probably mainly due to the greed of Dilextream). the total luminous flux is comparable to the brightest diode lamp No. 4, but distributed in all directions. A fairly universal solution for lighting non-residential premises and indoor street lamps. Not suitable for residential premises due to the unpleasant cold spectrum (although this is not for everyone).

Cold directional lamp No. 4 is the brightest of all diode lamps compared. The most technologically advanced SMD diodes. Suitable for lamps adjacent to the wall or ceiling in non-residential premises. Unpleasant color for residential use.

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