LED Guide

TRT designs, manufacturers and tests the vast majority of its own LED electronic systems including the lenses for precise optical control. We carefully consider end of life scenarios, for example, LED failures, solder joint failures and isolated component failures to ensure new designs have on-going system reliability even when individual components fail.

As part of the FW Thorpe group, our 80 year company history, running into thousands of years of combined experience, ensures every aspect of lighting a space is carefully considered - a requirement all the more important as LED lifetimes are now expected to reach 50,000 to 100,000 hours or even more!

Thorlux SMT Room

THIS WEBSITE PRESENTS THE VERY LATEST TRT LED PRODUCT INNOVATIONS USING TWO DIFFERENT TYPES OF LED TECHNOLOGY

WHITE HIGH POWER LEDS

Ideal where high power and excellent optical control is required. Each LED typically operates between 1W and 10W. Most often used in long life outdoor type products.

MEDIUM POWER LEDS

Ideal for high efficiency luminaires with a well diffused appearance. Typically used in large quantities in each luminaire with individual LEDs operating between 0.2W and 0.5W. Individual lenses can also be used in higher system power luminaires for increased optical control.

LED SYSTEM PROTECTION

LEDs are a very efficient light source and are resilient to many conditions that can be detrimental to the lifetime of traditional lamps.

For example, LEDs are largely unaffected by frequent switching, shock or vibration. However, LEDs or their solder joints can infrequently fail. In such circumstances it would be inconvenient if the failure caused significant loss of light, or if the luminaire extinguished completely.

In many luminaires LEDs are linked in series whereby a current flows through each LED in turn. Should an LED or solder joint fail, a whole row of LEDs, or in fact all LEDs may extinguish. TRT has designed specific protective measures to prevent such a condition.

There are two methods of LED protection used by TRT

1 LED PROTECT

For high power LEDs

2 LUX GUARD

For medium power LEDs

LED Protect

LED Protect by TRT is a revolutionary circuit design that can be specified on all TRT luminaires that use high power LEDs, for example the Verso tunnel luminaire family. In this type of luminaire LEDs are connected in a series string and failure of an LED or its solder joint can cause an open circuit and all LEDs in the string to extinguish. To overcome this, TRT adds PLED protectors to all of its high power tunnel luminaires.

PLED protectors provide an electronic alternative path for the current to flow in the event of LED or solder joint failure ensuring all remaining LEDs stay illuminated at the correct power. This is an invaluable feature guaranteeing that a luminaire continues to provide light, even in the case of nuisance LED failures, and reduces the maintenance costs of a project.

LED Protect Board Image
LED protect diagram

LUX GUARD

LUX GUARD by TRT is a patented current sharing PCB and circuit design philosophy. If an LED fails then its current is shared via neighbouring circuits, with each LED’s brightness increasing slightly to compensate. LUX GUARD ensures that a luminaire continues to provide its designed lumen performance, even in the case of nuisance LED failures, and reduces the maintenance costs of a project.

conventional diagram
lux guard diagram