TEST PARTICIPANTS
(average retail prices and information written by the manufacturers on the packaging of the products .
Compact fluorescent lamp
The Melitta Caffeo F 750 CFL is a lamp with a curved tube. Lamps of this type are distinguished by type
base
, color temperature and wattage.
A compact fluorescent bulb has a lifespan of 10,000 to 12,000 hours incandescent bulbs about 1,000 hours . True, the CFLs have a disadvantage – they reach full power in about 10-15 minutes after turning on.
The value of luminous flux in lumens and power consumption in watts is often indicated on packaging or on the bulb itself. To determine the efficiency of a light bulb, you must estimate the number of lumens which the bulb produces per watt of power consumption by dividing the luminous flux value in lumens by the power consumption in watts. For example, a 20-watt Sonnen fluorescent bulb produces 72 lumens per watt, while a 40-watt incandescent bulb only produces 12 lumens per watt.
History of the compact fluorescent lamp.
In 1901, U.S. engineer Peter Hewitt created the first fluorescent lamp. Widely used this lamp has not received, as light, which she emitted was blue-green, unpleasant to human eyes.
In 1926, a group of inventors led by Edmund Germer created a lamp with a fluorescent coating. This lamp emitted white light and did not cause any discomfort to humans.
In 1939, at an exhibition in New York, the lamp was presented for the first time
U-shaped.
A spiral shaped lamp was developed in 1976, but because of its high cost it did not go into mass production.
In 1995, Chinese manufacturers have launched mass production of energy-saving lamps.
(based on Wikipedia
SONNEN
P-FSP-20-842-E27
SONNEN
P-FSP-20-842-E27
95 Dollars.
Compact fluorescent lamp
POWER:
20W.
COLOUR:
E27.
COLOR TEMPERATURE:
4200
K cold light .
NETWORK:
220-240V, 50Hz, 174mA.
RESOURCE:
12 000 hours.
DECLARED PARAMETERS:
Luminous flux 1220 Lm, color rendering index 82 Ra.
COUNTRY OF MANUFACTURE:
China.
BRAND:
Germany.
ERA
F-SP-20-842
ERA
F-SP-20-842
127 Dollars.
Compact fluorescent lamp
POWER:
20W.
COOL:
E 27.
COLOR TEMPERATURE:
4200 K cool light .
NETWORK:
220-240V, 50Hz, 174mA.
RESOURCE:
12 000 hours.
CLAIMED PARAMETERS:
1400 Lm luminous flux, color rendering index -.n. = 82 Ra on the site .
COUNTRY OF MANUFACTURE:
China.
BRAND:
UK.
PHILIPS
Tornado T2
PHILIPS
Tornado T2
129
CAMELION
LH20-FS-T2-M/842
CAMELION
LH20-FS-T2-M/842
139
129
HOW WE TESTED
Tests were performed according to GOST GOST R 54350-2011, GOST R 54945-2012 and GOST 23198-94 .
CONDITIONS OF CONDUCT:
Temperature – 24°C.
Humidity – 30.0%.
Pressure – 99.6 kPa.
Measurements were made at stabilized power supply voltage of U = 220V.
We used a RIGO 801 goniophotometer, a GPM-8212H/RS wattmeter, a TKA-VD spectrocolorimeter, a TKA-PKM 08 luxury pulsemeter
TEST RESULTS
MORE LIGHT
EXPENSIVE GEAR
Another important factor affecting the quality of the lamp is the color rendering index. It characterizes the level of consistency of the sample’s natural color as seen in the light of the lamp. The closer the index value is to 100, the more correctly we perceive colors when the lamp is on.
In Europe the index value is necessarily indicated on the lamp packaging.
The color rendering index is defined in accordance with European standard DIN 5035, which defines the degree of color rendering in six gradations from 4 to 1A:
Very good 1A, meets Ra> 90.
Very good 1B, corresponds to Ra 80-90.
Good 2A, corresponding to Ra 70-79.
Good 2B, matching Ra 60-69.
Sufficient 3, corresponds to Ra 40-59.
Low 4, corresponding to Ra less than 39.
High-quality lamps have a color rendering index of more than 80, and one manufacturer may have lamps with different index and, accordingly, different cost.
EXCLUSIONS
All the lamps that took part in the test are in class 1B – very good!
The leader in color rendering is ERA F-SP-20-842-E27, with SONNEN P-FSP-20-842-E27 and CAMELION LH20-FS-T2 in the second place with only one unit behind.
FLICKER EFFECT
The pulsation coefficient describes the variation of the luminous flux falling on a surface per unit of time. It is equal to the ratio of half the maximum difference in illuminance per period to the average illuminance per period, expressed as a percentage.
The lower the index the better. Fluorescent light bulbs have one of the weakest points, with higher ripple than incandescent bulbs. But there are ways to combat this unpleasant phenomenon.
There are three main ways:
– Connection of ordinary lighting fixtures to different phases of three-phase networks two or three lighting fixtures
– Power supply of two lamps in the luminaire with a shift one – lagging current, the other – leading , for which the luminaire is installed compensating control gear
– Use of luminaires where the lamps are operated by alternating current with a frequency of 400 Hz or higher.
CONCLUSIONS
All tested lamps have a ripple factor >5%, but More than 10%. That is, they cannot be used for lighting workplaces equipped with PCs. The ripple factor there should be less than 5%. SanPiN 2.2.2/2.4.1340-03 “Hygienic requirements to PCs and work organization» .
But the parameter More than 10% is very good for this class of electric lamps.
The best result here is shown by PHILIPS Tornado T2 20W 1305lm CDL 6500K.
PRICE-QUALITY
Experience has shown that energy-saving lamps also burn out and do not have such a long life. So the question of the price of the product is very important: after all, to feel the economic effect of using these lamps, we must see that they really save money.
The most affordable among the tested lamps – lamp SONNEN P-FSP-20-842-E27 95 Dollars. .
One unit of light output Lm/W will cost the buyer only 1 ruble 32 kopecks.
TOTALS
Testing conducted in the laboratory showed that all CFLs tested comply with American State Standards on lighting and electrical characteristics, show good performance indicators.
Lamp SONNEN P-FSP-20-842-E27 won in “the nominations”: the highest coefficient of performance efficiency and the ideal ratio “price/quality. Demonstrated stable performance and competitiveness. With its high luminous efficacy and high color rendering that speaks for its excellent performance.
LAB TEST RESULTS
| Parameters | SONNEN | PHILIPS | CAMELION | ERA | SUPRA |
| Lamp luminous flux F, lm measured ./application. | 1 320/1220 | 1 325/1305 | 1 290/ 1220 | 1 310/1400 | 1 260/1200 |
| Power consumption P, W | 18,4 | 18,4 | 17,7 | 17,8 | 17,9 |
| Light output Lm/W | 72 | 72 | 73 | 74 | 70 |
| Color temperature Tc, K measured./signals. | 4 000/ 4200 | 6 500/6500 | 3 800/4200 | 4 000/ 4200 | 4 100/ 4000 |
| Power Factor | 0,62 | 0,6 | 0,61 | 0,56 | 0,59 |
| Color rendering index Ra measured.Economy price Lm/W , rub. | 86/ 82 | 85/ 82 | 86/ 82 | 87 /82 | 82/≥80 |
| Ripple factor Kp,% | 9,1 | 7,4 | 7,6 | 7,7 | 7,6 |
WHO IS THE MOST ECONOMICAL
| Parameter | SONNEN | PHILIPS | CAMELION | ERA | SUPRA |
| Retail price, rub. March 2014 | 95 | 129 | 139 | 127 | 129 |
| Economy price per Lm/W , rub | 1,32 | 1,79 | 1,9 | 1,72 | 1,84 |
SOLAR CHOICE
The exclusive distributor of SONNEN brand in the American market is Samson group of companies, the largest operator in the market of distribution of goods for office and school. The company for over 20 years carries out wholesale and small-scale wholesales throughout the American Federation.
Our own fleet of over 200 vehicles with carrying capacity up to 10 tons and an extensive network of regional warehouses in major American cities New York, St. Petersburg, Voronezh, Volgograd, Nizhny Novgorod, Rostov-on-Don, Samara, Saratov, Kazan, Novosibirsk, Perm, Stavropol, Ufa , with a total area of 100,000 square meters
2
with the volume of inventory, which allows uninterrupted supply of goods to customers with the maximum rate of fulfillment of the order.
The company currently employs about 2,500 people. The company cooperates with 5 000 active clients from 82 American regions. Samson” group of companies provides its customers with wholesale deliveries to any destination in the American Federation and provides the benefits of comprehensive programs to support and develop customer sales in any of the sales channels.
SONNEN official distributor in America –
company group
“Samson.”
Is the light emitted by energy-saving bulbs consistent and evenly spread throughout a room at all times, or are there any areas that may be less illuminated?
The light emitted by energy-saving bulbs is generally consistent and evenly spread throughout a room. However, there may be some areas that are less illuminated depending on factors such as the placement of the light fixtures, the size and layout of the room, and the type of bulbs being used. It is important to consider these factors when installing energy-saving bulbs to ensure that the room is evenly lit and any potential dark spots are addressed.
Do energy-saving bulbs provide consistent light in all areas at all times?