Fagerhult uses only LED’s, or LED modules, from recognised manufacturers and pay close attention towards ensuing they are powered for optimal lifespan and efficiency.
Heat affects the efficiency and lifetime
LEDs can be powered in two ways: with constant current or constant voltage. The ballast is the heart that drives an LED. Different luminaires uses different ballasts and if the ballast is unsuitable, or improperly connected, it can damage or even ruin the LED luminaires connected to it. Although some LEDs can run on conventional transformers, although these can lack certain kinds of safety features, such as short-circuit protection, which can lead to injuries.
Control from component to finished luminaire
To help safeguard against the negative issues related to excessive heat all components within the Fagerhult range remain within the manufacturers stated levels. An additional safety margin is added when measuring the control temperature (tc) and when calculating the temperature of the LED (tj). This policy has been applied to other electronics, such as high-frequency ballasts and emergency lighting, for many years and has helped ensure the stated expected life span is always achieved by a good margin.
The design is optimised by using software that stimulates temperatures and a heat camera to test calculations on the luminaire prototypes. During inspections and testing, the luminaire is always installed in the way it is intended to be used by the end customer.