Lifespan of LED fluorescent lamps
The lifetime of LEDs using the example of LED fluorescent lamps
- Theoretically, i. if everything is processed properly, LED fluorescent lamps almost do not break.
- The LED itself is hardly limited in its durability.
- However, the LEDs are controlled by passive components, which are subject to a natural durability.
- For example, even good capacitors dry out after about 60,000 operating hours.
What else has a negative effect on the LED life?
- Heat (too little heat dissipation at the bulb)
- too much power (too high LED current to get a lot of light out)
- Voltage peaks (usually in the power grid)
- Unclean power grids (phase shifts, installation errors etc.)
What has a positive effect on the LED lifetime
- constant mains voltage
- a "clean" power grid
- good, durable passive components
Where should you not use an LED?
- blast furnaces
- glass industry
- Bakery in the heat area
- Cowsheds (ammonia problem)
Where is the use of LEDs recommended?
- Cold stores (the light is immediately available in full brightness)
- Wherever the classic T8 tube was used and "normal" conditions prevail, a change makes sense
Evaluation of LED life by standards
For lifetime evaluation, the LM80, TM21, LM79 standards have been introduced.
From the standard LM80 + TM21 the new standard L70 results.
The aim of the L70 standard is to determine the time from which a light loss of 30% occurs at the LED.
The standard LM80 is purely related to the LED