The SubstiTUBEs sold by LEDVANCE meet all requirements contained in the relevant safety standard DIN EN 62776 (“Double-capped LED lamps designed to retrofit linear fluorescent lamps – safety standards”). This compliance is documented by certification from the German Association for Electrical, Electronic & Information Technologies, or VDE, the abbreviation of its German name.
Results of the key tests:
Such test seals apply to the tested product combination. This means that their validity covers only lamps that the luminaire manufacturer submitted to the testing organization (generally, these are not LED tubes). In Germany, new certification of a luminaire equipped with SubstiTUBE by an organization like the VDE can be easily done. Separate VDE certificates have already been issued for most of the SubstiTUBE LED tubes.
Due to its design, a LED tube produces directed light unlike fluorescent lighting, which is omnidirectional. As a result, light distribution can vary due to the existing luminaire's geometry. For simple bar and open luminaires, few differences can generally be perceived (see the light distribution curves). The lighting metric that is relevant for the user is the illumination level, which is measured on the “working plane” (e.g. on the work surface). The light produced by the SubstiTUBE LED tubes is directed at the target object and optimally illuminates it. Losses resulting from unwanted light spill can even be minimized as a result.