The lifetime of LED high bay lights depends on several factors, three of the main ones being the quality or effectiveness of the heat dissipation, the driver and the heat at the location where the LED high bay light is deployed.

In conventional lighting technology, lumen degradation is very rapid. For example, a metal halide lamp may have a lumen fade of 35% at 40% of its average lifetime (approximately 8000 hours). In other words, while the unit still consumes a lot of electricity, it only gets 65% of the light.

The light emitted by the LEDs also decreases over the life of the industrial high bay LED lights, which are rated L70. A light fixture is considered to have reached its rated life when it emits 30% less light than a new fixture. How do these three main factors affect life? Let's see.

LED High Bay lamp life - L70 at how many hours?
LED High Bay lamps are rated for at least L70 @ 50,000 hours. This means that after 50,000 hours the led will still emit 70% of its original light. Assuming 12 hours of use 5 days per week per year, the rated life is over 15 years. Some accessors have LED high bay lights that are rated for extreme life. This means that the fixture is rated to operate for 100,000 hours or more. Many accessor fixtures have LED high bay lights rated L70 @ 200,000 hours and some are even L70 @ 300,000 hours. In situations where the use of fixtures is difficult or for some reason very expensive, L70 @ 300,000 hours can be a significant added value.

LED high bay lights for life - the driver's problem
LED lights may be L70 @ 50,000 hours, but this does not mean that the driver will work continuously. It is difficult to determine whether one driver is better than another. What is certain is how the driver is placed in the fixture. Heat kills drivers. Most L70 @ 50,000 hours high bay lights are ufo, the driver is directly above the LED fixture and radiator. By housing the driver in a separate part of the high bay light, the driver can be protected and therefore last longer. The cost can be much higher, but if EXTREME-LIFE has to be used, the extra cost is worth it.

LED high bay lighting life - high-temperature locations kill LEDs and drivers
Near the ceiling where the LED high bay unit is located, processes such as steelmaking or heat treatment generate extremely high heat which cannot be reduced. LED high bay can be used to withstand high temperatures. First and foremost, the LEDs need to have superb heat dissipation capabilities. In addition, the lifetime of the LED can be extended at very low milliamps (mA). This drives the led and extends its life. In order to cope with the high temperatures, the driver must also be protected. This is achieved by placing the driver in a separate compartment or by placing the driver in a separate compartment with remote control. In other words, the driver is positioned at a distance from the part of the luminaire that emits light.

If you have special requirements for LED overhead lighting, please contact the ZGSM lighting experts.