June 29, 2016

Switching to LED: shedding a little light on the truth.

There are plenty of compelling reasons to change to LED lighting, particularly for domestic use. But for business and commercial users considering whether to change over to LED lighting, it’s important that you do your homework first, and ensure that LED is right for your usage, your operating environment and your maintenance approach.

The smartest thing you can do before you commit to changing over to LED is to talk to a reputable, professional electrician who doesn’t have a vested interest in selling you an expensive LED system. You need to find someone who stands by the tried and true adage:

The right light in the right place at the right time.

There are also a number of issues around LED usage that you’re probably not aware of, but that you should understand before committing to a changeover. These include:

  1. LED won’t eliminate maintenance costs – even if the light lasts a long time, the luminaire itself will accumulate dirt and dust, needing cleaning. In difficult to access spaces, this can be a considerable maintenance cost.
  2. Failure can be expensive – in some cases, if an LED fails, you will need to replace the light fitting itself, which can be a significant expense.
  3. Long life is not necessarily long light – although the lamp itself may last 100,000 hours, this will probably be at significantly reduced light output. Check the L70 figure – the point at which the LED will still be operating, but at 30% or more lower lumen output. Can you afford to have decreased lighting, or do you need higher luminosity at all times? This may affect how often you need to replace the LED fittings.
  4. Temperature can be a light killer – LEDs operate better in cooler ambient environments, and they have limited heat tolerance. If the heat sink is inefficient or the heat cannot be adequately dissipated, the unit may have a curtailed performance life, or even fail.
  5. Some LEDs can flicker – There are many different LED “driver” technologies, and some produce a variety of flicker characteristics in SSL systems under specific conditions, notably dimming.

These and other issues need to be part of your deliberations when considering changing over to LED, especially if you need a retrofit of the new lighting. In some cases you can simply replace the lamp, but you need to be aware of potential problems and specific requirements for LED, including:

  • Adequate ventilation is essential.
  • Recessed luminaries and small enclosures may be unsuitable unless air exchange or cooling is provided.
  • LED is not recommended for use in sealed luminaries.

The Australian and International standards for LED light sources are constantly changing and evolving, and it’s a good idea to keep abreast of the relevant changes. Always deal with reputable LED luminaire manufacturers that publish detailed product specifications measured in compliance with the IEC and Australian Standards performance requirements.

Always deal with LED experienced and reputable professional electricians for installation, maintenance and repairs.

Commercial Electrical Advice, Industrial Electrical Advice, Residential Electrical Advice , ,

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