Innovative LED lighting
How to choose a LED light?
How to choose a LED light?
Tips for choosing LED lighting
LED lights - a new generation of light sources, which differ in a number of features.
First, note when the LED light sources to effectively apply:
1. Construction of new and expensive facilities. During the construction of new roads, where the most expensive part is the construction and installation of transformer substations. When using traditional light sources such as lamps DRL, ДНАТ, IPF - one kilometer on average, is set to 33 lighting poles for the power which requires one transformer. When you install the LED lamps, which consume 4 times less - savings of transformers and is 4 times. Given the cost of transformers from 3 to 5 million rubles, the economy is already perceptible at the time of construction. So at 4 km of the road instead of the four transformers need to install only one, while reducing capital costs range from 9 to 12 million rubles. Also be aware that for the LED lamps and lanterns require less cable section.
2. There are worn-out network. Many networks have in mind to wear instead of the 220 often is only 160 V. Thus, if on an old street light sources, the chain of 20-30 voltage fixtures at 160 V will work only the first lamp, and the rest did not enough power.
3. Limitation of electrical power. At many sites there is a lack of electrical power. The problem can be solved in different ways: firstly, it is possible to add extra power (but in many cases it is either very expensive or simply do not have the technical capabilities), and secondly, you can start to optimize power consumption (for electricity often set a limit on consumption, above which facing a manifold increase in tariffs). In our practice, on average, the facility up to 30% of electricity consumption is spent on lighting. The use of LED lamps and fixtures can reduce those costs to 5-7%.
4. The presence of vibration. Many sites vulnerable to vibration (buritelnye plants, cranes, bridges, pumping stations, etc.), which leads to rapid failure of the traditional incandescent, fluorescent and mercury and require frequent replacement (sometimes associated with significant technological complexity and financial cost : shut down equipment, closing roads, etc.). LED lamps, floodlights, lamps and lighting completely vibration resistance.
5. Height of mounting the light sources more than 3,5 meters. Various commercial and public buildings and structures suggest a high ceiling of 4 meters, which requires the use of special equipment to replace blown bulbs. In many enterprises, where there are strict requirements for lighting (nuclear, military industry), safety rules, fire regulations and other regulatory standards - lighting should always work. Therefore, for the chief engineer or energy is a constant problem replacement lamps, which are out of order, in some cases the only team ever, and dealt with the matter.
6. Harmful effects to the eyes. Many people know that flickering light is not good for the eyes. In many offices you can see how the old fluorescent Lama unpleasant flicker (blink), interfering with work and increasing the fatigue of staff. LED lamps are useful for the eyes and not prone to flicker.
7. Issues of recycling and environmental safety. All fluorescent lamps contain mercury that may harm human health, when the lamp is broken or leakproof, and require special disposal. Unlike fluorescent lamps - LED lamps completely harmless to human health and does not require special disposal, being environmentally friendly product.
Secondly, pay attention to what features should I look for when choosing LED fixtures and lamps.
Today the market offers numerous manufacturers LED products.
There are 3 main groups:
1. Vendors of European and American fixtures
2. Vendors Asian manufacturers (including Chinese)
3. Russia's producers
With such diversity is not hard to make sure that customers who are interested in the subject of the introduction of LED products is a huge flow of different information.
So, when choosing an LED lamp to draw attention to the following items:
1. Manufacturer and characteristics of LEDs:
On the world market are the various well-known companies, Semileds, Cree, Osram, Philips, Nichia, and others. Well-known manufacturer can say that the claimed features are likely to be met. In our practice, the greatest concern is the discrepancy basic characteristics of LEDs (brightness, angle, color temperature, power consumption, degradation) of the stated targets.
2. Specifications power supply:
Encourage you to carefully examine the declared characteristics of power supplies for the temperature regimes (especially with regard to negative temperatures), the voltage drop, warranty obligations and rules governing the storage, transportation, installation and operation.
3. Embodiment
When choosing lighting fixtures in addition to technical components, of course, must be considered and constructive solutions used in their manufacture. Here, special attention should be paid to dust and moisture protection, heat transfer (failed housing can lead to poor thermal conductivity coefficient, which will lead to overheating of circuit board with LEDs and their subsequent degradation)
4. Maintainability
Despite all the assurances of the companies that sell LED lights, spotlights and lamps, the service life of products for over 10 years, there are situations that will need repair products (eg, LED or fuse of power supply). An important aspect is the question - can I replace a broken piece in place or will send the product on the technical expertise and warranty or after warranty repair to the seller?
5. Presence of lighting files
All the major players have a lighting file with the measured characteristics, mostly in the widespread program Dialux, which allows three-dimensional design of objects (including street, industrial and other facilities and buildings) and to calculate the illuminance on a surface in accordance with SNiPs "Artificial and daylight.
In our practice, most manufacturers and sellers of abuse by the following basic lighting characteristics:
1. brightness of the luminous flux lamp
2. color temperature lamp
3. opening angle of the light beam
4. illumination on the surface
5. power consumption of the lamp
Obtain reliable data possible, either in the laboratory or by field tests and measurements, it is desirable to clarify what the laboratory conducted lighting and electrical measurements.
How to choose a LED light?
Comparison of LED and fluorescent lamps
Comparison of LED lamps with a mercury lamp
How to decipher the degree of protection IP (dust and moisture protection)
What is the degradation of LEDs? Can the brightness of LEDs (light-emitting diodes) be decreased during the working period?
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