Colour temperature
The term colour temperature is used for the light colour of white light. It is expressed in Kelvin (K).
The term warm white is used up to 3300 K, neutral white from 3300 K to 5300 K, and daylight white over 5300 K.
Colour rendering index
The colour rendering index (Ra) stands for the degree of conformity between the perceived colour of an object and its
appearance under a specific light source.
Ambient temperature (ZVEI rated ambient temperature)
The ambient temperature (ta) defines the maximum temperature, measured in degrees Celsius (°C), at which a luminaire
is allowed to be operated.
Service life criteria
Most LED do not fail by a certain time but their luminous flux decreases over time (degradation). The service life of LED,
LED modules and luminaires is limited accordingly by the total failure of their related electronic components (e.g. power
supply units) or by the luminous flux dropping below a previously fixed minimum value.
Voltage
The maximum electric rated voltage, measured in volts (V), at which a luminaire is allowed to be operated.
Module designation
Unlike conventional lamps, for which there are clearly defined connection standards, LED are a fixed part of luminaires.
It is difficult therefore for non-specialists to obtain matching LED replacement modules.
As a responsible manufacturer, we have come up with a solution to this problem for our customers.
Today you will already find a lamp designation in every LED luminaire, providing exact details of the installed modules.
Furthermore, our in-house production will enable us to deliver matching LED modules for many years to come.
We guarantee the availability of replacement modules even 20 years after you purchase an LED luminaire from us.
563
Kat33_BG47_48_553-576_GB_FR.indd
563
28.04.17
10:42
