Bsi bs en 13032 2 2004 (2011)

BRITISH STANDARD

BS EN
13032-2:2004
Incorporating
corrigendum
September 2007
and March 2011

Light and lighting —
Measurement and
presentation of
photometric data of
lamps and luminaires —
Part 2: Presentation of data for indoor
and outdoor work places

ICS 17.180.20; 29.140.01

12&23<,1*:,7+287%6,3(50,66,21(;&(37$63(50,77('%<&23<5,*+7/$:


BS EN 13032-2:2004

National foreword
This British Standard is the UK implementation of EN 13032-2:2004,
incorporating corrigendum February 2007.
The UK participation in its preparation was entrusted by Technical Committee
CPL/34, Lamps and related equipment, to Subcommittee CPL/34/10, Light and
lighting.
A list of organizations represented on this subcommittee can be obtained on

request to its secretary.
This publication does not purport to include all the necessary provisions of a
contract. Users are responsible for its correct application.
Compliance with a British Standard cannot confer immunity from
legal obligations.

This British Standard was
published under the authority
of the Standards Policy and
Strategy Committee
on 27 June 2005

Amendments/corrigenda issued since publication
Amd. No.

Date

Comments

16998

28 September 2007

Replacement of Table A.4

31 March 2011

Addition of National Annex NA

Corrigendum No. 1

© BSI 2011

ISBN 978 0 580 73059 7


EUROPEAN STANDARD

EN 13032-2

NORME EUROPÉENNE
EUROPÄISCHE NORM

December 2004
Incorporating corrigendum February 2007

ICS 17.180.20; 29.140.01

English version

Light and lighting - Measurement and presentation of
photometric data of lamps and luminaires - Part 2: Presentation
of data for indoor and outdoor work places
Lumière et éclairage - Mesure et présentation des
caractéristiques photométriques des lampes et luminaires Partie 2 : Présentation des données utilisées dans les lieux
de travail intérieurs et extérieurs

Licht und Beleuchtung - Messung und Darstellung
photometrischer Daten von Lampen und Leuchten - Teil 2:
Darstellung der Daten für Arbeitsstätten in Innenräumen

und im Freien

This European Standard was approved by CEN on 15 November 2004.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving 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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36

© 2004 CEN

All rights of exploitation in any form and by any means reserved
worldwide for CEN national Members.

B-1050 Brussels

Ref. No. EN 13032-2:2004: E


EN 13032-2:2004 (E)

Contents

Page

Foreword..............................................................................................................................................................3
Introduction .........................................................................................................................................................4
1

Scope ......................................................................................................................................................5

2

Normative references ............................................................................................................................5

3

Terms and definitions ...........................................................................................................................5

4

Lamp data ...............................................................................................................................................6

5

Luminaire data .......................................................................................................................................7

Annex A (normative) Calculation of UF-tables .............................................................................................10
Bibliography ......................................................................................................................................................17

National Annex NA Additional Calculations...................................................................................................19

2


EN 13032-2:2004 (E)

Foreword
This document (EN 13032-2:2004) 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 2005, and conflicting national standards shall be withdrawn at
the latest by June 2005.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.

3


EN 13032-2:2004 (E)

Introduction
There are many lighting solutions that can satisfy the lighting criteria specified in EN 12464-1 and
prEN 12464-2. To design these solutions, photometric data of the equipment are required. The equipment
may include the commonly used general purpose luminaires as well as uplighters, wall washers, adjustable
directional lights, floodlights, desk lights, etc. This document specifies the required data.

4


EN 13032-2:2004 (E)

1

Scope

This document specifies the required data for lamps and luminaires for the verification of conformity to the
requirements of EN 12464-1 and prEN 12464-2. It also specifies data that are commonly used for lighting of
indoor and outdoor work places. When these data are provided, they should conform to this document.

2

Normative references

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
prEN 12464-2, Light and lighting — Lighting of work places — Part 2: Outdoor work places
EN 12665:2002, Light and lighting — Basic terms and criteria for specifying lighting requirements
CIE 117:1995, Discomfort glare in interior lighting

3

Terms and definitions

For the purposes of this document, the terms and definitions given in EN 12665:2002 and the following apply.
NOTE

This Clause defines terms and quantities that are in use and important to this document, and which are not
given in IEC 60050-845.

3.1
correction factor
factor to modify the luminaire data as presented on a particular photometric data sheet to those of similar
luminaires (for example: Ballast Lumen Factor, length, lumen corrections)
3.2
essential data
lamp and luminaire data required for the verification of conformity to the requirements of EN 12464-1 and
prEN 12464-2
3.3
lamp code
any combination of letters and numbers by which the lamp type is identified
3.4
lamp dimensions
all dimensions of the lamp that are relevant for the luminaire
3.5
lamp energy efficiency class (LEEC)
lamp energy efficiency class assigned to the lamp in accordance with the energy efficiency index defined in
the Lamps Directive 98/11/EC and measured in accordance with EN 50285
3.6
luminaire code
any combination of letters and numbers by which the luminaire type is identified

5


EN 13032-2:2004 (E)

3.7
nominal lamp wattage (Wlamp)
approximate wattage used to designate or identify the lamp
NOTE

The nominal lamp wattage is also (incorrectly) known as rated lamp wattage.

3.8
shielding angle
angle between the horizontal plane and the first line of sight at which the luminous parts of the lamps in the
luminaire are directly visible
3.9
spacing to height ratio (SHR)
ratio of spacing to the height of the geometric centres of an array of luminaires above the reference plane
3.10
useful data
lamp and luminaire data beneficial to the designers and users in the planning and operation of lighting
installations
3.11
utilisation factor (UF)
the ratio of the luminous flux of a luminaire in an installation received by the reference surface to the sum of
the rated lamp luminous fluxes of the lamps of the installation (see EN 12665)
NOTE
In practice the reference surface generally is the surface at the height of the working plane and with the length
and width of the floor surface.

4

Lamp data

4.1 Essential lamp data
The following lamp data shall be provided for verification:
4.1.1

Lamp code

4.1.2

Lamp dimensions

4.1.3

Luminous flux

4.1.4

Lamp lumen maintenance factor (LLMF)

NOTE
The lamp lumen maintenance factor may be presented both as a graph or data in a table. However, to allow
the designer to set up an optimal maintenance scheme, it is recommended to present these data in a tabular form.

4.1.5

Lamp survival factor (LSF)

NOTE
The lamp survival factor may be presented both as a graph or as data in a table. However, to allow the
designer to set up an optimal maintenance scheme, it is recommended to present these data in a tabular form.

6


EN 13032-2:2004 (E)

4.1.6

General colour rendering index (Ra)

4.1.7

Correlated colour temperature (TCP)

4.2 Useful lamp data
The following lamp data may be provided:
4.2.1

Lamp energy efficiency class (LEEC)

4.2.2

Nominal lamp wattage (Wlamp)

5

Luminaire data

5.1 Essential luminaire data
The following luminaire data shall be provided for verification, where applicable:
5.1.1

Luminaire code

5.1.2

Dimensions of the luminous parts of the luminaire
2

The dimensions of those parts of the luminaire from which light is emitted shall be given in m or m .
5.1.3

Normalised intensity table

The tabulated luminous intensity values normalised to a total bare lamp flux in the luminaire of 1 000 lm shall
-1
be given in cd·klm .
These values correspond to the Light Output Ratio (LOR) of the luminaire (see also 5.2.5).
The number of C-planes and γ-angles at which the I-values shall be specified, is given in Tables 1 and 2.
Table 1 — Number of C-planes for various intensity distributions
Luminous intensity
distribution

C-planes

Radially symmetric

One C-plane

Symmetric about two planes

Every 15° from 0° to 90°

Symmetric about one plane

Every 15° from 0° to 180°
or
every 15° from 90° to 270°

Asymmetric

Every 15° from 0° to 360°

7


EN 13032-2:2004 (E)

Table 2 — Number of γ-angles for various types of luminaires
Type of luminaire

Downward Flux Fraction
(DFF)

γ-angles

Downlighting

> 0,9

Every 5° from 0° to 90°

Downlighting with upward component

0,1 to 0,9

Every 5° from 0° to 180°

Uplighting

< 0,1

Every 5° from 90° to 180°

For floodlights, both used in indoor and outdoor lighting installations, the measurement and presentation of the
normalised I-table might be in B-β instead of C-γ notation.
NOTE 1
The Downward Flux Fraction (DFF) is the ratio of the Downward Light Output Ratio (DLOR) and the Light
Output Ratio (LOR) of the luminaire: DFF = DLOR/LOR (see also 5.2.5).
NOTE 2
Luminaires with a concentrated intensity distribution may require more angles at which the luminous intensity
data are presented (e.g. every 1° in the area where 90% of the luminous flux is emitted).

5.1.4

Normalised luminance table

The table shall give the average luminaire luminance at elevation angles γ of 55°, 65°, 75° and 85° from the
downward vertical in C-planes as specified in Table 1, for indoor work places where display screens, which
are vertical or inclined up to 15° tilt angle, are used.
The values in the luminance table shall be normalised to a bare lamp flux in the luminaire of 1 000 lm and

-2
-1
shall be presented in cd·m ·klm .
-2

NOTE
In the case of a unique lamp/luminaire combination, the luminance values may be given in cd·m ; the
luminous flux of the lamp should then be stated.

5.1.5

Unified Glare Rating (UGR) table

The Unified Glare Rating method shall be used to specify glare from indoor lighting installations. For UGR
data presentation the tabular method as described in CIE Publication no. 117:1995 shall be used.
Manufacturers publishing UGR tables, calculated at spacing to height ratios (SHR) other than the ratio
described in CIE publication no. 117, shall declare the ratio used in the photometric data presentation.
NOTE

5.1.6

For determining UGR, the reference plane for SHR calculation is at eye level (1,2 m above the floor).

Glare rating (GR)

The glare rating of the installed luminaires (outdoor) shall be calculated in accordance with prEN 12464-2.
5.1.7

Correction factors

When the electrical performance of the ballast, used in the photometric measurements, deviates more than
5 % from standard, then a Ballast Lumen Factor (BLF) shall be specified.

8


EN 13032-2:2004 (E)

5.1.8

Shielding angle

5.2 Useful luminaire data
5.2.1

General

The following luminaire data may be provided:
5.2.2

Physical dimensions of the luminaire

The physical dimensions are basically the length and width or diameter of the luminaire and its height.
NOTE
Other useful dimensions are for example: the height of an uplighter above the floor, the height above the desk
of a desk top luminaire and the (maximum) length of a pendant.

5.2.3

Intensity diagram

The intensity distribution presented as a graph is mainly intended to give a first impression of the shape of the
luminous intensity distribution. The graph may be in any form (e.g. polar, Cartesian, etc.).
5.2.4
NOTE 1

Spacing to height ratio (SHR)
For indoor lighting the reference plane is usually the horizontal working plane.

NOTE 2
The maximum spacing to height ratio (SHRmax) is the maximum ratio at which the uniformity requirements are
just fulfilled.
NOTE 3
The nominal spacing to height ratio (SHRnom) is the nearest lower step value to be used in the calculation of
the UF values.
NOTE 4

5.2.5

Luminaires with symmetry about two planes may have two spacing to height ratios.

Light output ratios

NOTE
For luminaires emitting light in both the upper and the lower hemisphere the terms Downward Light Output
Ratio (DLOR) and Upward Light Output Ratio (ULOR) may be used.

5.2.6

Luminaire maintenance factor (LMF)

NOTE
The luminaire maintenance factor (LMF) may be presented both as a graph or as data in a table. However, to
allow the designer to set up an optimal maintenance scheme, it is recommended to present these data in a tabular form.

5.2.7

Utilisation factor (UF) tables

The utilisation factor tables for general purpose indoor luminaires can be used for lumen method of scheme
design.
In most photometric data sheets the utilisation factors are presented in a table for various room sizes (room
indices) and sets of reflectance combinations. When a UF table forms part of the photometric data
presentation, the values in the table shall be calculated according to the harmonised European UF method as
described in Annex A. This allows data to be produced for rectangular rooms at nominal spacing-to-height
ratios (SHRNOM) of 1,00, 1,25, 1,50, 1,75 and 2,00. The nominal spacing-to-height ratio shall be declared.

9


EN 13032-2:2004 (E)

Annex A
(normative)
Calculation of UF-tables

A.1 General
This Annex describes the harmonised European procedure for the calculation of utilisation factor tables.

A.2 The step-by-step calculation procedure

The step-by-step procedure to be followed:
⎯

calculate upward and downward light output ratio (ULOR, DLOR) from normalised intensity table;

⎯

calculate accumulated luminous fluxes in lower hemisphere for the four zones from 0° to 41,4° (FCL1),
60° (FCL2), 75,5° (FCL3) and 90° (FCL4) from normalised intensity table (Figure A.1);

⎯

calculate accumulated luminous fluxes in upper hemisphere for the four zones from 180° to 138.6°
(FCU1), 120° (FCU2), 104,5° (FCU3) and 90° (FCU4) from normalised intensity table (Figure A.1);

⎯

calculate direct flux onto working plane (DFL) for given standard rooms for nominal spacing-to-height ratio
to be specified using the tabulated geometric multipliers (Table A.1) for the different room indices k;

DFL = FCL1 • GML1 + FCL 2 • GML 2 + FCL3 • GML3 + FCL 4 • GML 4
⎯

calculate direct flux onto ceiling plane (DFU) for given standard rooms for the same nominal spacing-toheight ratio to be specified using the tabulated geometric multipliers (Table A.2) for the different room
indices k

DFU = FCU 1 • GMU 1 + FCU 2 • GMU 2 + FCU 3 • GMU 3 + FCU 4 • GMU 4
⎯

(A.1)

(A.2)

calculate distribution factors for ceiling mounted luminaires
DF(F) = DFL/1000

for working plane

DF(W) = DLOR-DF(F)

for walls

DF(C) = ULOR

for ceiling

and for suspended luminaires (suspension ratio 1/4)
DF(F) = DFL/1 000

for working plane

DF(W) = DLOR-DF(F)

for walls

DF(S) = ULOR-DF(C)
luminaire up to the ceiling)
DF(C) = DFU/1 000

10

for ceiling cavity (the part of the wall from the level of the suspended
for ceiling


EN 13032-2:2004 (E)

⎯

calculate utilisation factor for working plane using tabulated transfer factors for given reflectance
combinations (Table A.3) for ceiling mounted luminaires

UF (F ) = DF (F ) • TF (F , F ) + DF (W ) • TF (W , F ) + DF (C ) • TF (C , F )
with

(A.3)

TF(F,F) Transfer Factor working plane to working plane
TF(W,F) Transfer Factor wall to working plane
TF(C,F) Transfer Factor ceiling to working plane

⎯

compile full utilisation factor table for working plane, luminaires ceiling mounted;

⎯

calculate utilisation factor for working plane using tabulated transfer factors for given reflectance
combinations (Table A.4) for suspended luminaires

UF (F ) = DF (F ) • TF (F , F ) + DF (W ) • TF (W , F ) + DF (S ) • TF (S , F ) + DF (C ) • TF (C , F ) (A.4)
with

⎯

TF(F,F)

Transfer Factor working plane to working plane

TF(W,F)

Transfer Factor wall to working plane

TF(S,F)

Transfer Factor ceiling cavity to working plane

TF(C,F)

Transfer Factor ceiling to working plane

compile full utilisation factor table for working plane, luminaires suspended.

Figure A.1 — Downward and upward zones for the calculation of accumulated luminous fluxes

A.3 CEN Flux Code
In addition the CEN flux code representing the characteristics of the luminaire shall be given.
The CEN flux code consists of 9 whole numbers separated by spaces defined as:
FCL1/FCL4, FCL2/FCL4, FCL3/FCL4, DFF, LOR, FCU1/FCU4, FCU2/FCU4, FCU3/FCU4, UFF
For luminaires with downward flux only the CEN flux code in abbreviated form consists of 5 whole numbers

separated by spaces defined as:
FCL1/FCL4, FCL2/FCL4, FCL3/FCL4, DFF, LOR

11


EN 13032-2:2004 (E)

Table A.1 — Geometric multipliers, ceiling mounted

Geometric multipliers, lower hemisphere, ceiling mounted
k

0,60

0,80

1,00

1,25

1,50

2,00

2,50

3,00

4,00

5,00

SHRNOM = 1,00
GML1

943

752

636

510

429

354

286

258

236

231

GML2

-317

-33

121

238

275

248

190

118

-6

-99

GML3

145

81

88

131

202

350

470

563

684

748

GML4

-27

-16

-15

-16

-18

-15

-3

16

60

107

SHRNOM = 1,25
GML1

1 013

893

692

569

498

355

317

268

242

234

GML2

-338

-112

151

256

274

284

184

132

5

-91

GML3

144

102

65

119

197

337

471

563

685

751

GML4

-26

-19

-11

-14

-17

-13

-2

16

61

108

SHRNOM = 1,50
GML1

1 070

934

774

591

435

353

293

279

236

231

GML2

-340

-45

168

342

420

334

254

161

26

-76

GML3

133

58

38

62

141

316

447

541

679

746

GML4

-24

-11

-6

-4

-9

-9

2

20

62

109

SHRNOM = 1,75
GML1

NA

NA

717

529

413

331

249

238

229

219

GML2

NA

NA

316

480

494

386

313

209

54

-51

GML3

NA

NA

-29

3

101

292

436

538

664

737

GML4

NA

NA

5

5

-2

-6

3

21

65

112

SHRNOM = 2,00

GML1

NA

NA

644

459

319

217

206

176

192

204

GML2

NA

NA

441

588

657

529

407

319

100

-15

GML3

NA

NA

-80

-32

37

266

390

491

658

718

GML4

NA

NA

12

9

6

-4

10

28

67

114

12

EN 13032-2:2004 (E)

Table A.2 — Geometric multipliers, luminaires suspended, suspension ratio 1/4

Geometric multipliers, upper hemisphere, suspension ratio 1/4
k

0,60

0,80

1,00

1,25

1,50

2,00

2,50

3,00

4,00

5,00

SHRNOM = 1,00
GMU1

124

176

136

148

134

102

138

148

156

152

GMU2

753

463

373

199

125

9

-97

-157

-222

-247

GMU3

130

363

475

610

666

749

765

764

738

702

GMU4

3

7

30

57

93

158

219

271

355

420

SHRNOM = 1,25
GMU1

28

-8

28

23

28

77

99

118

133

138

GMU2

826

645

416

276

170

-12

-87

-166

-230

-256

GMU3

152

360

541

656

726

797

792

801

767

723

GMU4

-4

0

18

50

83

153

215

269

355

421

SHRNOM = 1,50
GMU1

-36

-94

-71

-26

23

61

91

103

128

133

GMU2

840

633

422

217

66

-59

-144

-187

-253

-273

GMU3

205

464

639

774

841

863

860

842

796

745

GMU4

-16

-17

-1

32

76

147

211

262

354

420

SHRNOM = 1,75
GMU1

NA

NA

-73

-19

23

63

100

113

127

134

GMU2

NA

NA

322

119

15

-95

-195

-236

-273

-295

GMU3

NA

NA

750

873

898

900

901

877

819

766

GMU4

NA

NA

-10

25

69

144

213

266

351

420

SHRNOM = 2,00
GMU1

NA

NA

-56

-3

43

92

108

127

137

137

GMU2

NA

NA

245

46

-91

-208

-254

-301

-315

-315

GMU3

NA

NA

815

932

990

981

956

933

849

786

GMU4

NA

NA

-13

25

66

151

209

264

355

417

13


EN 13032-2:2004 (E)

Table A.3 — Transfer factors, luminaires ceiling mounted

Transfer factors (luminaires ceiling mounted)
Reflectances
Ceiling

0,80

0,80

0,80

0,70

0,70

0,70

0,50

0,50

0,50

Walls

0,70

0,50

0,30

0,70

0,50

0,30

0,70

0,50

0,30

Floor cavity

0,20

0,20

0,20

0,20

0,20

0,20

0,20

0,20

0,20

Transfer factors-utilisation plane

k
0,60

0,80

1,00

1,25

1,50

2,00

2,50

3,00

4,00

14

TF(C,F)

0,453

0,341

0,271

0,386

0,293

0,235

0,261

0,203

0,165

TF(W,F)

0,392

0,215

0,105

0,373

0,207

0,102

0,338

0,192

0,096

TF(F,F)

1,082

1,049

1,029

1,075

1,046

1,027

1,064

1,039

1,023

TF(C,F)

0,537

0,426

0,352

0,456

0,366

0,305

0,308

0,253

0,214

TF(W,F)

0,450

0,256

0,128

0,425

0,245

0,123

0,380

0,224

0,114

TF(F,F)

1,096

1,063

1,041

1,087

1,057

1,037

1,071

1,047

1,030

TF(C,F)

0,598

0,492

0,418

0,508

0,423

0,362

0,343

0,291

0,253

TF(W,F)

0,491

0,288

0,147

0,462

0,274

0,141

0,409

0,248

0,129

TF(F,F)

1,107

1,075

1,052

1,096

1,067

1,047

1,076

1,053

1,036

TF(C,F)

0,654

0,556

0,484

0,556

0,477

0,418

0,376

0,328

0,292

TF(W,F)

0,530

0,320

0,166

0,497

0,302

0,158

0,435

0,270

0,143

TF(F,F)

1,118

1,087

1,064

1,105

1,078

1,057

1,081

1,060

1,043

TF(C,F)

0,695

0,605

0,536

0,591

0,519

0,463

0,400

0,356

0,322

TF(W,F)

0,558

0,344

0,181

0,522

0,324

0,172

0,455

0,287

0,154

TF(F,F)

1,127

1,097

1,075

1,112

1,086

1,066

1,085

1,065

1,049

TF(C,F)

0,752

0,674

0,612

0,639

0,578

0,527

0,433

0,396

0,366

TF(W,F)

0,597

0,378

0,204

0,556

0,355

0,193

0,481

0,311

0,171

TF(F,F)

1,139

1,113

1,092

1,122

1,099

1,081

1,090

1,073

1,059

TF(C,F)

0,788

0,720

0,665

0,671

0,617

0,572

0,454

0,423

0,396

TF(W,F)

0,623

0,402

0,220

0,579

0,376

0,207

0,498

0,327

0,182

TF(F,F)

1,147

1,124

1,105

1,128

1,108

1,092

1,094

1,079

1,066

TF(C,F)

0,813

0,753

0,703

0,692

0,645

0,605

0,470

0,442

0,418

TF(W,F)

0,641

0,420

0,232

0,595

0,392

0,218

0,510

0,339

0,190

TF(F,F)

1,153

1,133

1,115

1,133

1,115

1,100

1,096

1,083

1,071

TF(C,F)

0,846

0,798

0,756

0,721

0,683

0,649

0,489

0,467

0,447


EN 13032-2:2004 (E)

Table A.3 — Transfer factors, luminaires ceiling mounted (continued)
Transfer factors (luminaires ceiling mounted)
Reflectances
Ceiling

0,80

0,80

0,80

0,70

0,70

0,70

0,50

0,50

0,50

Walls

0,70

0,50

0,30

0,70

0,50

0,30

0,70

0,50

0,30

Floor cavity

0,20

0,20

0,20

0,20

0,20

0,20

0,20

0,20

0,20

Transfer factors-utilisation plane

k

5,00

TF(W,F)

0,664

0,443

0,249

0,616

0,413

0,233

0,526

0,355

0,202

TF(F,F)

1,162

1,145

1,130

1,140

1,125

1,112

1,099

1,089

1,079

TF(C,F)

0,866

0,826

0,790

0,738

0,707

0,678

0,502

0,483

0,466

TF(W,F)

0,679

0,459

0,261

0,629

0,426

0,243

0,536

0,365

0,210

TF(F,F)

1,167

1,152

1,140

1,144

1,132

1,121

1,102

1,093

1,084

15


EN 13032-2:2004 (E)

Table A.4 — Transfer factors, luminaires suspended, suspension ratio 1/4

Transfer factors (luminaires suspended, suspension ratio 1/4)
Reflectances
Ceiling

0.80

0.80

0.80

0.70

0.70

0.70

0.50

0.50

0.50

Walls

0.70

0.50

0.30

0.70

0.50

0.30

0.70

0.50

0.30

Floor cavity

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.20

0.20

Transfer factors - utilisation plane

k
0.60

0.80

1.00

1.25

1.50

2.00

2.50

3.00

4.00

5.00

16

TF(C,F)

0.356

0.252

0.193

0.302

0.217

0.167

0.204

0.150

0.118

TF(S,F)

0.266

0.127

0.055

0.246

0.119

0.052

0.210

0.104

0.046

TF(W,F)

0.354

0.191

0.093

0.343

0.187

0.092

0.323

0.180

0.089

TF(F,F)

1.070

1.039

1.022

1.066

1.037

1.020

1.059

1.034

1.018

TF(C,F)

0.445

0.335

0.267

0.377

0.288

0.232

0.254

0.199

0.162

TF(S,F)

0.335

0.172

0.079

0.309

0.161

0.074

0.262

0.139

0.065

TF(W,F)

0.410

0.229

0.113

0.394

0.222

0.111

0.364

0.210

0.106

TF(F,F)

1.082

1.050

1.030

1.076

1.047

1.028

1.065

1.040

1.023

TF(C,F)

0.513

0.403

0.331

0.435

0.346

0.287

0.293

0.238

0.201

TF(S,F)

0.388

0.210

0.100

0.358

0.196

0.094

0.302

0.169

0.082

TF(W,F)

0.452

0.259

0.130

0.432

0.250

0.126

0.394

0.233

0.119

TF(F,F)

1.093

1.060

1.038

1.085

1.055

1.035

1.071

1.046

1.028

TF(C,F)

0.578

0.471

0.398

0.490

0.404

0.344

0.331

0.278

0.240

TF(S,F)

0.439

0.249

0.122

0.405

0.231

0.115

0.340

0.198

0.100

TF(W,F)

0.492

0.289

0.148

0.467

0.277

0.143

0.421

0.255

0.133

TF(F,F)

1.104

1.071

1.049

1.094

1.065

1.044

1.076

1.052

1.034

TF(C,F)

0.626

0.525

0.452

0.532

0.450

0.391

0.359

0.310

0.273

TF(S,F)

0.478

0.279

0.141

0.440

0.259

0.132

0.370

0.222

0.114

TF(W,F)

0.523

0.314

0.162

0.494

0.299

0.156

0.441

0.272

0.144

TF(F,F)

1.113

1.081

1.058

1.101

1.073

1.052

1.080

1.057

1.040

TF(C,F)

0.694

0.604

0.536

0.590

0.518

0.462

0.399

0.356

0.321

TF(S,F)

0.532

0.324

0.169

0.490

0.300

0.158

0.411

0.256

0.136

TF(W,F)

0.566

0.350

0.185

0.532

0.332

0.177

0.469

0.297

0.160

TF(F,F)

1.127

1.097

1.075

1.112

1.086

1.066

1.085

1.065

1.049

TF(C,F)

0.739

0.659

0.595

0.629

0.565

0.513

0.425

0.387

0.356

TF(S,F)

0.568

0.355

0.189

0.523

0.329

0.176

0.438

0.280

0.151

TF(W,F)

0.596

0.376

0.202

0.558

0.355

0.192

0.488

0.315

0.172

TF(F,F)

1.136

1.110

1.089

1.120

1.096

1.078

1.089

1.071

1.057

TF(C,F)

0.771

0.699

0.640

0.656

0.599

0.551

0.444

0.410

0.382

TF(S,F)

0.594

0.378

0.205

0.546

0.350

0.190

0.458

0.297

0.163

TF(W,F)

0.617

0.396

0.215

0.576

0.372

0.204

0.501

0.328

0.181

TF(F,F)

1.144

1.119

1.099

1.125

1.104

1.087

1.092

1.076

1.063

TF(C,F)

0.813

0.753

0.703

0.692

0.645

0.605

0.469

0.442

0.418

TF(S,F)

0.628

0.410

0.226

0.577

0.379

0.210

0.484

0.321

0.179

TF(W,F)

0.645

0.423

0.234

0.601

0.396

0.220

0.519

0.345

0.194

TF(F,F)

1.153

1.133

1.115

1.133

1.115

1.100

1.096

1.083

1.071

TF(C,F)

0.839

0.789

0.745

0.715

0.675

0.640

0.485

0.462

0.441

TF(S,F)

0.649

0.431

0.241

0.597

0.398

0.224

0.501

0.336

0.190

TF(W,F)

0.663

0.441

0.247

0.616

0.412

0.232

0.530

0.357

0.202

TF(F,F)

1.160

1.142

1.127

1.138

1.123

1.110

1.099

1.088

1.078

EN 13032-2:2004 (E)

Bibliography

[1]

EN 12464-1, Light and lighting — Lighting of work places — Part 1: Indoor work places

[2]

EN 13032-1, Light and lighting — Measurement and presentation of photometric data of lamps and
luminaires – Part 1: Measurement and file format

[3]

EN 50285, Energy efficiency of electric lamps for household use — Measurement methods

[4]

CIE 40:1978, Calculations for interior lighting; basic method

[5]

CIE 52:1982, Calculations for interior lighting applied method

[6]

CIE 97:1992, Maintenance of indoor electric lighting systems

[7]

CIE 112:1994, Glare evaluation system for use within outdoor sports- and area lighting

[8]

CIE 129:1998, Guide for lighting exterior working areas

[9]

CIE 154:2003, Maintenance of outdoor lighting systems

[10]

92/75/EEC, Council Directive on the labelling of the consumption of energy by household appliances

[11]

98/11/EC, Commission Directive on implementing Council Directives of energy labelling of household
lamps

[12]

IEC 60050-845:1987, International electrotechnical vocabulary; chapter 845: lighting

17


This page deliberately left blank

National Annex NA to BS EN 13032-2
(Informative)
Additional Calculations
NA.1  General
The current BS EN 13032-2, Measurement and presentation of photometric data of lamps and luminaires –
Part 2: Presentation of data for indoor and outdoor work places, released in 2004, will not be revised in
the near future. In terms of the data relevant to a luminaire, some of the items like the dimensions of the
luminaire are quite obvious and need no further explanation. However, some items require a complex
calculation process. Whereas the existing standard gives a calculation method for utilization factors, the
objective of this annex is to give calculation methods for:
––

spacing to height ratios (SHR);

normalized luminance tables; and
––

unified glare rating (UGR) tables.

These calculations are necessary as their results are listed in sections 5.1.4, 5.1.5 and 5.24 as being either
useful or essential data for luminaires and without a standardized method for their calculation, it
becomes difficult to compare information for similar luminaires from different manufacturers.

NA.2  Spacing to height ratios
To calculate the spacing to height ratio for a rotationally symmetric or dissymmetric luminaire, it is
necessary to calculate the direct illuminance on each point of a grid illuminated by a 4 by 4 square array
of luminaires. The general layout for the luminaires and calculation points is shown in Figure NA.1.
Figure NA.1 – General layout of luminaires and calculation points

19


The luminaires are taken to be 1 m above the grid of points and the illuminance calculation treats them as
point sources. This grid of points is placed so that it has one corner in the centre of the array of luminaires
and the opposite corner directly under the centre of one of the luminaires. The spacing between each of
the grid points is one twentieth of the spacing (S) between the luminaires.
Figure NA.2 – Grid of calculation points

Once the illuminances at each of the grid points have been calculated, it is then necessary to find the
minimum value (Emin) and the average value (Eav). The uniformity (U) may then be calculated by using
the formula:
U=

Emin
E Av

(NA.1)

The spacing (S) is adjusted until a uniformity value of 0.7 is obtained and this spacing is then determined
as being SHRmax.

20


NA.3  Normalized Luminance Tables
The normalized luminance of a luminaire is a function of the normalized intensity in a particular direction
and the projected luminous area of the luminaire in that direction. Thus, to calculate the normalized
luminance, Equation NA.2 can be used:

(

)

L C ,γ =

(

I C ,γ

)

Ab cos γ + AS sin γ cos C + Ae sin γ sinC

(NA.2)

Where:
I(C,g )is the normalized intensity at elevation angle g and azimuth plane C (See BS EN 13032-1 for a
detailed explanation of C and g )
Abis the luminous area of the base of the luminaire (the area when viewed from g = 0)
As

is the luminous area of the side of the luminaire (the area when viewed from g = 90, C=0)

Ae

is the luminous area of the end of the luminaire (the area when viewed from g = 90, C=90)

NA.4  Unified Glare Rating (UGR) Tables

NA.4.1  Introduction
The Discomfort Glare Rating of a lighting installation is determined by the CIE (International Commission
of Illumiation) Unified Glare Rating (UGR) tabular method based on the basic equation:
 0.25 L2ω 
UGR = 8 log10  ∑

Lb p2 


(NA.3)

Where:

E
Lbis the background luminance (cd/m²), calculated as ind , in which Eind is the vertical indirect
π
illuminance at the observer’s eye.
Lis the luminance of the luminous parts of each luminaire in the direction of the observer’s
eye (cd/m²).
ω

is the solid angle of the luminous parts of each luminaire at the observer’s eye (steradian).

pis the Guth Position Index for each individual luminaire, which relates to its displacement
from the line of sight.
NOTE  The full details of the UGR equation are given in CIE 117-1995, and the standardized CIE UGR table is
given in CIE 190-2010.

To ensure consistency and give help for checking the data, this standard provides the table of factors
and angles that should be used in the preparation of the standard CIE UGR table. The UGR values in the

standard CIE UGR table are normalized to 1000 lm of the total bare lamp flux in the luminaire and
therefore the table should be labelled as ‘Uncorrected UGR table’. Table NA.1 shows the standard
uncorrected UGR table for a dissymmetric distribution luminaire. The pair of tables are produced for
crosswise and endwise viewing. For symmetric distribution, half of the table is sufficient, but for
asymmetric distribution, additional tables will be required. Data is provided for 19 standard room shapes
with 9 different combinations of room surface reflectance.

21


For application of the ’Uncorrected UGR table’ the values should be corrected to the actual lamp flux in
the luminaire by using conversion terms defined by the following:
 Φ
UGR Φ = UGR Φ0 + 8log10 
 Φ0 

( )

( )

(NA.4)

Where:
UGR(Φo) is the UGR value from the uncorrected UGR table.
Φ

is the actual total lamp flux.

Φ0

is 1000 lm.

Table NA.1 – Example of an uncorrected UGR table for a dissymmetric distribution luminaire
Uncorrected UGR Table

Spacing to Height Ratio (SHR) 1:1

Reflectances
Ceiling

0.8

0.8

0.8

0.7

0.7

0.7

0.5

0.5

0.5

0.8

0.8

0.8

0.7

0.7

0.7

0.5

0.5

0.5

Walls

0.7

0.5

0.3

0.7

0.5

0.3

0.7

0.5

0.3

0.7

0.5

0.3

0.7

0.5

0.3

0.7

0.5

0.3

Floor

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

X

Y Crosswise View
8.4

9.8 11.2

Endwise View

2

2

9.1 10.5 11.9

5.1

6.5

8.0

5.4

6.8

8.2

5.9

7.2

8.7

2

3 10.8 12.0 13.3 11.0 12.3 13.6 11.6 12.8 14.1

6.3

7.6

8.9

6.6

7.8

9.1

7.1

8.3

9.6

2

4 11.7 12.9 14.2 12.0 13.2 14.4 12.5 13.7 14.9

6.8

8.0

9.2

7.1

8.2

9.5

7.6

8.8 10.0

2

6 12.5 13.6 14.8 12.8 13.9 15.1 13.4 14.4 15.6

7.2

8.3

9.5

7.5

8.6

9.7

8.1

9.1 10.3

2

8 12.9 14.0 15.1 13.2 14.3 15.4 13.8 14.8 15.9

7.4

8.5

9.6

7.7

8.7

9.8

8.2

9.3 10.4

2

12 13.3 14.3 15.4 13.6 14.6 15.7 14.2 15.1 16.2

7.5

8.6

9.6

7.8

8.8

9.9

8.4

9.4 10.4

4

2

9.6 10.7 12.0

6.1

7.3

8.6

6.4

7.6

8.8

7.0

8.1

4

3 11.4 12.5 13.5 11.7 12.7 13.8 12.3 13.3 14.3

7.7

8.7

9.8

8.0

9.0 10.0

8.5

9.5 10.6

4

4 12.6 13.5 14.5 12.9 13.8 14.8 13.5 14.4 15.3

8.3

9.3 10.2

8.6

9.5 10.5

9.2 10.1 11.0

4

6 13.7 14.5 15.4 14.0 14.8 15.6 14.6 15.4 16.2

8.9

9.7 10.6

9.2 10.0 10.9

9.8 10.6 11.4

4

8 14.2 15.0 15.8 14.5 15.3 16.1 15.1 15.8 16.6

9.1

9.9 10.7

9.4 10.2 11.0 10.0 10.8 11.6

4

12 14.8 15.5 16.2 15.0 15.7 16.5 15.7 16.3 17.1

9.3 10.0 10.8

9.6 10.3 11.1 10.2 10.9 11.7

8

4 12.9 13.7 14.5 13.2 13.9 14.7 13.8 14.5 15.3

9.2 10.0 10.8

9.5 10.2 11.0 10.1 10.8 11.6

8

6 14.2 14.8 15.5 14.5 15.1 15.8 15.1 15.7 16.4

10.0 10.6 11.3 10.3 10.9 11.6 10.9 11.5 12.2

8

8 14.9 15.5 16.1 15.2 15.7 16.3 15.8 16.4 17.0

10.4 10.9 11.5 10.7 11.2 11.8 11.3 11.9 12.4

8

12 15.7 16.2 16.7 16.0 16.5 17.0 16.6 17.1 17.6

10.7 11.2 11.7 11.0 11.5 12.0 11.6 12.1 12.6

12

4 12.9 13.7 14.4 13.2 13.9 14.7 13.8 14.5 15.3

12

6 14.3 14.9 15.5 14.6 15.1 15.7 15.2 15.8 16.4

10.4 10.9 11.5 10.6 11.2 11.8 11.3 11.8 12.4

12

8 15.0 15.6 16.1 15.3 15.8 16.4 16.0 16.5 17.0

10.8 11.3 11.9 11.1 11.6 12.2 11.8 12.3 12.8

22

8.8 10.0 11.2

8.6 10.0 11.4

9.0 10.2 11.5

9.4 10.1 10.9

9.3

9.7 10.4 11.1 10.3 11.0 11.7


NA.4.2  Standard Conditions
The standard conditions are defined as follows:
––

The position of the complete array of luminaires is shown in Figure NA. 3.

––

The observer is located at the mid-point marked O of a wall and has a horizontal line of sight towards
the centre of the opposite wall.

––

The height of the luminaires’ centre above the observer’s eye level is H = 2 m.

––

The spacing of the luminaires is 2 m in both xT and yR directions where xT is the horizontal distance
between vertical planes through the luminaire centre and through the observer’s eye position. Both are
parallel to the direction of view, and yR is the horizontal distance parallel to the viewing direction from
the observer’s eye position to the vertical plane. This is perpendicular to the viewing direction through
the luminaire centre. See Figures NA. 3, NA. 5 and NA. 6. The spacing to height ratio (SHR) is 1:1.

––

The height of the wall is 2 m.

––

The horizontal reference plane is at the observer eye level at 1.2 m above floor.

––

The room dimensions X and Y are expressed in terms of H (the mounting height) and where the
X dimension is perpendicular to the line of sight and the Y dimension is parallel to the line of sight.

––

The luminous intensity distribution of the luminaire (I table) is provided in the normalized form
of cd/1000 lm.
Figure NA.3 – The position of luminaires in the standard array area, with
examples of area A size 2H x 4H and area B size 8H x 6H

23