EDUCATIONAL INFORMATION

ANODISING THICKNESS – measured in microns

  • 10um = Indoor use only
  • 15um = Minimum for outdoor covered areas
  • 20um = Outdoor use
  • 25um = Exterior use in coastal / salt water environments

ANODISING vs POWDERCOATING

Aluminium is one of Earth’s most abundant metals known for its lightness, strength and resistance to corrosion. There are many valid reasons to treat the surface of aluminium profiles. These include supplementing corrosion resistance; augmenting hardness and arresting wear-and-tear.

The anodic coating will not peel or flake. Anodizing is unaffected by sunlight, preventing fading and does not emit VOCs (volatile organic compound). There is no heat buildup in the aluminium profile as anodizing does not restrict heat dissipation.

Powder coating is becoming popular as it is eco-friendly, pollution free and comes in a wide range of colours. A heat resistant tape must be applied to the heat sink area as powder coating can inhibit heat dissipation in the LED.

Powder coating does not require any solvent to keep filler parts and binder in liquid suspension form.

CRI (Colour Rendering Index)

A colour rendering index (CRI) is a quantitative measure of the ability of a light source to reveal the colours of various objects faithfully in comparison with an ideal or natural light source. … The CRI is determined by the light source’s spectrum.

The Colour Rendering Index (CRI) is a scale from 0 to 100 percent indicating how accurate a “given” light source is at rendering colour when compared to a “reference” light source.

The higher the CRI, the better the colour rendering ability.

Light sources with a CRI of 85 to 90 are considered good at colour rendering. Light sources with a CRI of 90 or higher are excellent at colour rendering and should be used for tasks requiring the most accurate colour discrimination. It is important to note that CRI is independent of colour temperature.

12-Volt vs 24-Volt

There are different working voltages of LED lights.

LED strip is the most popular type of light driven by constant voltage LED drivers, the general working voltages are 12V and 24V. All LED ribbon has a maximum run length before experiencing voltage drop; however, 24 volt LED ribbon has a longer maximum run length than 12 volt. 24V ribbon performs better which means the brightness is maintained from the beginning to the end of the strip.

The maximum run length is determined by the wattage per metre of the LED ribbon. The quality of the PCB (printed circuit board) also plays a big part in the optimal performance of the LED strip. Our American ribbon is a perfect example of high quality PCB.

The cutting increments in 24V ribbon is almost double that of 12V. You can cut 12V LED strip every 25mm-50mm whereas the cut points on 24V is every 50mm-100mm.

LED DIMMING

Switching LEDs is very straight forward but dimming is a bit more complicated. There are different ways of dimming and the type of LED driver needs to be matched to the control system in use. We ensure that the fittings and drivers we supply work well together.

  • Mains Dimming (Leading Edge)

This method of dimming is most commonly used for electronic low voltage transformers typically used for halogen lamps. Rarely used for LED fittings and frequently troublesome with LED.

  • 1-10C Dimming

This method works for dimming dedicated LED ribbon when coupled to a 1-10V dimmable driver. It requires a separate two core ‘control’ cable to be run from the dimmer to the fittings driver.

  • Mains Dimming (Trailing Edge)

Mains Trailing Edge dimming can be used to dim most dedicated LED fittings when coupled to a mains dimmable driver. No extra control cable is required.

  • DMX

DMX is commonly used for colour programmable fittings. The DMX signal is generated by a lighting control system and requires dedicated cabling between the controller and driver. DMX is generally used with professionally designed lighting control systems.

  • DALI

DALI (Digital Addressable Lighting Interface) has been more commonly found in commercial environments and is a digital system. It is very flexible in its deployment and use. As with the 0-10V system it requires a control cable, but with DALI this cable can be run between many fittings. DALI is generally used with professionally designed lighting control systems. We are increasingly using DALI in residential lighting projects for its superior dimming, flexibility, cost-effectiveness and simplified wiring structure.