How to choose a good High Bay Light for Your Industry
It's an easy question if you know the correct answer. High Bay lights usually used in factories and warehouses. It is expensive, and consuming high power, used continuously for long working hours, and need high maintenance cost. High-bay lighting market is gradually getting a significant shift to LED technology. Mainly because of the falling prices of LED lamps. Along with advances in sensors and controls, which are used to help further reduce energy consumption, enabling an acceptable return on investment (ROI). High-bay lighting applications in commercial and industrial environments now are well positioned to take advantage of LEDs concerning energy savings and minimising downtime. Choosing a professional, high-quality, high bay LED lights is not an easy task these days as the competition and deception have increased a lot in the lighting industry. Every LED lighting manufacturer is claiming that his product is the best available solution, but you should choose High Bay lights very carefully. Here are some general technical specifications for high-bay commercial and industrial buildings: Minimum light output: 10,000 lumens Zonal lumen density: ≥30 percent: 20° to 50° Minimum luminaire efficacy: 80 lm/W Allowable CCTs: ≤5700K Minimum CRI: 70 L70 lumen maintenance: 50,000 hours Warranty: 5 years
High bay lightsare usually installed at heights more than 3 meters, and you should consider the amount of light they throw on the floor or table. An illuminance of 250 to 300lux on the table is suitable for most workshops. While for most warehouses, 150 to 250lx would be enough. The easiest way to measure illuminance is to use a lux meter, which is not expensive. The illuminance of a place in the room is the sum of the light sources and reflection from the wall. Thus, you have to measure actual illuminance with a lux meter. But to estimate the illuminance before you buy a light, we can use Dialux and other lighting design software to measure the lux levels at different positions, if IES files of the fixture are available.
Lifetime and Lumens depreciation:
Always ask the lighting manufacturer for Lumens depreciation reports e.g. LM80 certification of LEDs used in High Bay lights. These reports describe how much lumens will reduce after a rated life span of LED. For example, if estimated life of LED is 50,000 hours, and it is LM80 certified, it will sustain 80% lumens after 50,000 hours, and only 20% light dissipation may happen. The lifetime of a LED light has much to do with the quality of LED light source and power supply, as well as the light’s thermal management. A regular good-quality power supply has a lifetime up to 50,000 hours. The power supply’s life time gets halved for each 10℃ rise in its working temperature or vice versa. It is the same for the LED light source. When continually operating under high temperature, the inner connecting wires melt faster. LED chip convert electricity into light and heat. So the higher the lighting efficiency, the lower the heat generated. Because it has large heat sinks, its temperature rise is only 20℃, which is 70% of a regular 100W LED high bay light.
Industrial lighting usually generates 5000-6000K white light, with a CRI of over 70. Besides these two factors, the colour bins also matter. When the manufacturers produce LEDs, there are certain deviations. Then manufacturers tend to categorise them into four colour bins. There are one or two bins, which look like the standard white light of its CCT, and the other two or three bins look different. That is why you may find each company sells LED with different light colours even though their specs might be the same. Some poor quality LED lights might even look bluish, pinkish, or purplish.
It depends on the environment where these lights installed. Industrial light is recommended to have IP66 It can offer a high level of protection against water and dust. Moreover, you could use a high-pressure water jet to clean them, which can help you save on cleaning fees.
Testing is essential for both quality and safety assurance, you need to make sure that the LED high bay lighting product you are selecting is already tested form accredit third party testing laboratory for international safety and standard protocols including CE and UL listing. IES Test, Ageing Test, Drop Test, and Vibration Instrumentation are major tests that ensure the quality of LED lights. Always ask for these test reports when you purchase High Bay lights. It is better to select High bay lights which tested for international safety and standard protocols including CE and UL listing. IES Test, Ageing Test, Hi-pot Tester, Drop Test, and Vibration Instrumentation are major tests that ensure the quality of LED lights. Always ask for these test reports when you purchase High Bay lights.