Road lighting. Methods of measuring lighting performance

EN 13201-4:2015
Road lighting - Part 4: Methods of measuring lighting performance

EUROPEAN STANDARD

NORME EUROPEENNE

EUROPAISCHE NORM

Supersedes EN 13201-4:2003
English Version
Road lighting - Part 4: Methods of measuring lightingperformance
Eclairage public - Partie 4 : Methodes de mesure des StraRenbeleuchtung - Teil 4: Methoden zur Messung
performances photometriques der Giitemerkmale von StralSenbeleuchtungsanlagen
This European Standard was approved by CEN on 6 June 2015.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions forgiving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

Contents Page
Foreword 4
Introduction 6
1 Scope 7
2 Normative references 7
З? Terms and definitions 7
4 Symbols and abbreviations 9
5 Preliminary information of road lighting system measurement 9
5.1 Aims of measurements 9
5.2 Measurement procedures and selection of photometric instruments 10
5.3 Measurement uncertainty evaluation 11
5.4 Measured zones 13
5.5 Measured parameters 13
5.6 General information regarding measurements during the lifetime of the lighting
installation 14
5.7 Comparison with requirements 14
6 Measurement conditions 15
6.1 Ageing of lamps and luminaires before measurements 15
6.2 Stabilization after switch-on 15
6.3 Climatic conditions 15
6.4 Road conditions 16
6.5 Extraneous light and obstruction of light 16
7 Photometric measurements 17
7.1 Location of grid points 17
7.2 Measurement of luminance 17
7.3 Measurement of illuminance 18
7.4 Measurement of Edge Illuminance Ratio ( 7.5 Measurement of the threshold increment (/ 8 Measurement of non-photometric parameters 22
8.1 General 22
8.2 Supply voltage 22
8.3 Temperature and humidity 22
8.4 Geometric data 22
8.5 Instruments for non-photometric measurements 22
9 Test report 23
Annex A (informative) Evaluation of tolerances in road lighting installation design 24
A.l Tolerance analysis 24
A.2 Parameters to be considered in the tolerance analysis 25
A.3 Mathematical model for tolerance evaluations 26
A.4 Modelling the tolerance analysis 26
Annex В? (informative) Important particular parameters 29
B.l General 29
B.2 Particular luminance and uniformity 29
B.3 Use of extended uniformity 29
B.4 Evaluation of extended uniformities 30
Annex C (normative) Conventions for symbols of photometric quality parameters 32
Annex D (normative) Guidelines for measurement systems for adaptive road lighting 33
Annex E (informative) Measurements for investigation of discrepancies between photometric measures and design expectation 35
Annex F (informative) Measurement uncertainty evaluation) 36
F.l Luminance measurements 36
F.2 Illuminance measurements 39
Annex G (informative) Practical information 43
G.l General 43
G.2 Measurement precautions 43
G.3 Measurement organization 43
Annex H (informative) Example of report 44
H.l Premise 44
H.2 General test information 44
H.3 Geometrical data 44
H.4 Road surface data 44
H.5 Lamp and luminaire data 45
H.6 Electricity supply 45
H.7 Environmental conditions 46
H.8 Condition of installation 46
H.9 Measuring devices data 46
H.10 Photometric measuring devices characteristics 47
H.ll Measurement grid 47
H.12 Light monitoring record ..47
H.13 Specific information for dynamic measurements 48
Bibliography 49

European foreword
This document (EN 13201-4:2015) has been prepared by Technical Committee CEN/TC 169 "Light and lighting", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2016 and conflicting national standards shall be withdrawn at the latest by June 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13201-4:2003.
The main technical changes in this version are:
—? The definition of different aims of measurement with peculiar requirements in order to optimize the instrument characteristics, measurement cost and time;
—? A deeper comparison between static and dynamic measurement requirements;
—? Addition of specific requirements for ILMD (Image Luminance Measuring Device) when used as luminance meter;
—? Evaluation of measurement uncertainty;
—? Comparison with requirements or design expectation carried out considering the expanded measurement uncertainty of the measure;
—? Addition of guidelines for the measurement of Threshold Increment and of Edge Illuminance Ratio;
—? Suggestion for an algorithm for the evaluation of tolerances in road lighting installation design;
—? Description of the concept of particular parameters in order to consider measurements carried out in condition different from the normative ones;
—? Description of an improved convention for symbols of photometric quality parameters in order to avoid confusion between values of the same parameter but with different meanings;
—? Measurement systems for adaptive road lighting are considered;
—? Guidelines for the measurement uncertainty evaluation are given.
This document EN 13201-4 has been worked out by the Joint Working Group of CEN/TC 169 "Light and lighting" with CEN/TC 226 "Road Equipment”, the secretariat of which is held by AFNOR.
EN 13201, Road lighting is a series of documents that consists of the following parts:
—? Part 1: Guidelines on selection of lighting classes [T echnical Report];
—? Part 2: Performance requirements;
—? Part3: Calculation of performance;
—? Part 4: Methods of measuring lighting performance [present document];
—? Part 5: Energy performance indicators.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Introduction
The purpose of Part 4 of this European Standard is to:
a) establish conventions and procedures for the characterization based on measurements of road lighting installations considering the photometric quality parameters, i.e. the set of quantities that characterize a lighting class, specified in Part 2;
b) give advice on the use and selection of luminance meters and illuminance meters for this particular application;
c) specify measurement requirements according to the aims of the measurement and expected accuracy;
d) establish conventions for evaluating the measurement uncertainty of involved parameters;
e) give information on the application of tolerance analysis in the design of the lighting installation.
A non-exhaustive list of possible measurement aims is:
f) verification of compliance with standard requirements;
g) verification of compliance with design expectations;
h) road lighting installation monitoring, e.g. for maintenance purposes;
i) road lighting installation control, e.g. for optimizing energy saving;
j) investigation of discrepancies between real lighting conditions and design expectations.
The conventions for observer position and location of measurement points are those adopted in EN 13201-3. However, relaxation from these is permitted especially where the measurements are used for monitoring the performance of a road lighting installation, to control its performances or other purposes or when different conditions are specified in the road lighting installation design.
Conditions, which can lead to inaccuracies, are identified and precautions are given to minimize and quantify these.
This standard should be used to write measurement procedures for the characterization of road lighting installations.
Criteria for deciding when measurements should be done, on the purpose of measurements and on how the measurement results shall be used fall outside the scope of this standard. 1 Scope
This European Standard specifies measurement conditions and procedures for measuring the photometric quality parameters of road lighting installations, i.e. the quantities that quantify their performances in accordance with EN 13201-2 lighting classes.
Parameters used for quantifying the energy performance of road lighting installations are not considered.
A methodology to evaluate the road lighting performances considering tolerances in the design parameters is described in the informative Annex A.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the