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Standards Development
This European Standard specifies the conventions and mathematical procedures to be adopted in calculating the photometric performance of road lighting installations designed in accordance with the parameters described in EN 13201-2 to ensure that every lighting calculation is based on the same mathematical principles.
The design procedure of a lighting installation also requires the knowledge of the parameters involved in the described model, their tolerances and variability. These aspects are not considered in this part of EN 13201 but a procedure to analyse their contribution in the expected results is suggested in EN 13201-4 and it can also be used in the design phase.
The main revision to part 3 are corrections to formulas symbols and text errors, many of which have already been identified.
In addition, the revision of part 3 will as far as is practical to do so align with CIE 140 2019 which covers the same topic area but currently has conflicting information that is not included in EN13201 Part 3.
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