ISO/TS 7127:2023

ISO TSDTS 7127:2023(E)
ISO/TC 274
Date: 2023-01-3103-03
Secretariat: DIN
Light and lighting — BIM PropertiesBuilding information modelling
properties for lighting — Lighting — Lighting Systemssystems
Licht und Beleuchtung — BIM Merkmale für die Beleuchtung — Beleuchtungssysteme
Lumière et éclairage — BIM Propriétés pour l'éclairage — Systèmes d'éclairage

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ISO TS /DTS 7127:2023(E)
© ISO 2023
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ISO TS /DTS 7127:2023(E)
Contents
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principal structure . 2
4.1 General . 2
4.2 Detailed description of set of attributes. 2
4.2.1 General . 2
4.2.2 GUID . 2
4.2.3 ID . 2
4.2.4 Name . 3
4.2.5 Description . 3
4.2.6 Symbol . 3
4.2.7 Format, Unit . 3
4.2.8 Value set . 3
4.2.9 Examples . 3
4.3 Further IT-related attributes . 3
5 Properties for lighting systems . 4
Bibliography . 78
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ISO TS /DTS 7127:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 274, Light and Lighting, in cooperation
with CIE Joint Technical Committee 6.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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ISO TS /DTS 7127:2023(E)
Introduction
Building Information Modellinginformation modelling (BIM) is a concurrent process that gives
engineering and construction professionals the tools to more efficiently plan, construct, and manage
buildings and infrastructure.
Within standardisation committees much work is being performed to define the fundamental principles
of BIM that will allow this to happen in an effective and consistent manner.
For lighting applications, it is essential that this work is monitored and where required input is made to
ensure that the requirements for lighting applications are considered.
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TECHNICAL SPECIFICATION ISO/DTS 7127:2023(E)

Light and lighting — Building information modelling properties
for lighting — Lighting systems
1 Scope
This technical specification identifies and clarifies lighting properties for digital building design and
maintenance.
This document provides all the needed properties to design and to describe lighting systems. These
properties are intended to be used for mapping between data providers and requesters. The mapping of
the identifiers enables the exchange of luminaire and sensing device data within different databases.
The unambiguous mapping and description of properties improves the data quality, reduces
misinterpretations and the processing time in digital environments. Therefore, the properties listed in
this document establish the essential description of lighting systems in BIM systems and databases.
The listed properties in this document are used to structure the product data sheet which is
complemented with real product information.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
ISO 23386:2020, Building information modelling and other digital processes used in construction —
Methodology to describe, author and maintain properties in interconnected data dictionaries
CIE S 017:2020, ILV: International Lighting Vocabulary
ISO 80000-7, Quantities and units — Part 7: Light
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in CIE S 017, ISO 80000-7
and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
building information modelling
BIM
use of a shared digital representation of a built object (including buildings, bridges, roads, process plants,
etc.) to facilitate design, construction and operation processes to form a reliable basis for decisions
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ISO/DTS 7127:2023(E)
Note 1 to entry: The acronym BIM also stands for the shared digital representation of the physical and functional
characteristics of any construction works.
[SOURCE: ISO 29481-1:2016, 3.2]
3.2
data dictionary
database that contains metadata
[SOURCE: ISO/IEC 2382:2015, 2121501]
3.3
attribute
data element for the computer-sensible description of a property, group of properties, etc.
Note 1 to entry: An attribute describes only one single detail of a property or a group of properties.
EXAMPLE The GUID of a property, the name of a property, the definition of a group of properties.
[SOURCE: ISO 23386:2020, 3.4, modified – Example extended]
3.4
property
inherent or acquired feature of an item
EXAMPLE Thermal efficiency, heat flow, sound reduction index, sound power level, colour.
[SOURCE: ISO 23386:2020, 3.17]
4 Principal structure
4.1 General
A lighting system (for example a luminaire or a sensing device) consists out of properties which describes
it and make it possible to communicate about it in application or specification.
The properties for lighting systems have been organized in tables listed in Clause 5 according to different
disciplines. This sub-division is indicative only and not to be taken as exclusive:
— Mechanical properties – ID 01 (Table 1);
— Electrical properties – ID 02 (Table 2);
— Emergency lighting properties – ID 03 (Table 3);
— Photometric properties – ID 04 (Table 4);
— Sensing device properties – ID 05 (Table 5);
— Mounting & Accessory properties – ID 06 (Table 6);
— Marketing properties – ID 07 (Table 7);
— Operations & Maintenance properties – ID 08 (Table 8);
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ISO/DTS 7127:2023(E)
— Environmental properties – ID 09 (Table 9).
4.2 Detailed description of set of attributes
4.2.1 General
The structure of the attributes is according to ISO 23386:2020 and enhanced by the property ID.
The properties have no mandatory or optional aspect. All properties are equal in importance and
hierarchy. The use case and the application provide a structure and are mandatory to the properties.
4.2.2 GUID
In ISO 23386:2020 named “Globally unique identifier” (PA001).
Identifier given to a product that guarantees its uniqueness throughout its entire life. (defined in
ISO 6707-2:2017, 3.2.46).
[SOURCE: ISO 6707-2:2017, 3.2.46]
This attribute identifies the property unambiguously. A Globally Unique identifier GUID is generated
using an algorithm. This machine-readable code will allow matching across databases, lists and data
template.
In IFC and ISO 12006-3 the compressed version of GUID is used. It can be uncompressed to the standard
GUID with open tools.
4.2.3 ID
This attribute identifies the property unambiguously. It is human-readable and corresponds to the
globally unique identifier.
Note: The ID always starts with the table number from 4.1 followed by a dash and an individual serial number with
four digits.
4.2.4 Name
In ISO 23386:2020 named “Names in language en-EN” (PA016).
The name of the property.
4.2.5 Description
In ISO 23386:2020 named “Descriptions in language en-EN” (PA018).
This attribute is used to provide a plain language description of the property.
For some descriptions the name is enough. To avoid the repeating of the name, just “identical with name.”
is entered.
4.2.6 Symbol
In ISO 23386:2020 named “Symbols of the property in a given property group” (PA022).
Symbols for quantities are given in the ISO 80000 and IEC 80000 series. The symbols for quantities are
written in italics. A given symbol can indicate different quantities. [ISO 80000-1:2009].
4.2.7 Format, Unit
In ISO 23386:2020 named “Digital format” (PA037).
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ISO/DTS 7127:2023(E)
Precision is the maximum number of significant digits that can be represented in a format, or the number
of digits that a result is rounded to [ISO/IEC 60559:2020].
In ISO 23386:2020 named “Units” (PA033).
Concept type representing a scale that enables a value to be measured. Properties that do not have a unit
are be designated as not applicable (n.a.).
4.2.8 Value set
In ISO 23386:2020 named “List of possible values in language en-EN” (PA039).
Collection of acceptable values for a property. Values outside the value set are not permitted. Multiple
values may be possible for some properties.
4.2.9 Examples
In ISO 23386:2020 named “Examples in language en-EN” (PA019).
Samples for a value of the specific property.
4.3 Further IT-related attributes
Where potential attributes are not specified in 4.2, they may be defined separately within a data-
dictionary. These attributes can be found in ISO 23386:2020:
— Definitions in language en-EN (PA017): A description of the attribute in order to define it
unambiguously;
— Method of measurement (PA029): Evaluation of construction products to ensure their suitability
according to requirements in harmonised technical specifications;
— Name of the defining values (PA034): In a table of values, this attribute provides the name of the
column headers;
— Data type (PA030): Format for expressing the value of the property. This can be understood as the
storage type from a software perspective. (ISO/IEC 11404 subclause :2007, 8.1) Examples: String,
Float, Integer;
— Status (PA002): Status of the property during its life cycle. Example: Active;
— Date of creation (PA003): Date of validation of the property creation request. All dates in
accordance with ISO 8601. Format=YYYY-MM-DDThh:mm:ssTZD. Example: 2014-04-30T10:39:53Z;
— Date of activation (PA004): Date after when the property can be used;
— Date of last change (PA005): Date of validation of the last change request;
— Date of revision (PA006);
— Date of version (PA007);
— Date of deactivation (PA008): Date when property becomes obsolete. The property is maintained
in the dictionary;
— Version number (PA009): Enables tracking of major changes;
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ISO/DTS 7127:2023(E)
— Revision number (PA010): Enables tracking of minor changes. If the version number changes, the
revision number starts again at 1. Examples: new translation, changes of typos;
— List of replaced properties (PA011): Identifier of the replaced property (or properties). List of
GUIDs;
— List of replacing properties (PA012): Identifier of the replacing property (or properties). List of
GUIDs;
— Deprecation explainationexplanation (PA013): Reason of deprecation. Deprecated may indicate
the property will be removed in the future. This explaination has toexplanation shall be written in
international English (EN).
5 Properties for lighting systems
In table Table 1 the mechanical properties of a lighting system are described. This figure shows the
orientation of a luminaire in the in the (C, γ) coordinate system from CIE 121:1996 to clarify the location
relationship.
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ISO/DTS 7127:2023(E)



Key
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ISO/DTS 7127:2023(E)
1 First axis of luminaire
2 Second axis of luminaire
3 Third axis of luminaire
4 Polar axis of photometer
5 C half plane
1 first axis of luminaire
2 second axis of luminaire
3 third axis of luminaire
4 polar axis of photometer
5 C half plane
Figure 1 — Orientation of a luminaire in the (C, γ) coordinate system from CIE 121:1996,
First; first axis of luminaire (γ) is in the IES LM-63-19, the Verticalvertical or the z-axis,
Second; second axis of luminaire (C0-C180) is in the IES LM-63-19, the 0° Horizontalhorizontal
or the x-axis,
Third; third axis of luminaire (C90-C270) is in the IES LM-63-19, the 90° Horizontalhorizontal or
the y-axis
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ISO/DTS 7127:2023(E)
Table 1 — Mechanical properties
GUID ID Name Description Symbol Format, Unit Value set Examples
2GZ1YB8enFVhDH 01-0001 overall diameter Overall diameter of the housing of  1E0, mm n.a. 200
OKgLc$BU the round lighting system.
2F38RxmOf3ow07 01-0053 overall radius Overall radius of the housing of the  1E0, mm n.a. 100
15JRf5OO lighting system. Suitable for circular
luminaires or sensing devices or
segment geometry. Not suitable for
ellipsoid forms.
19Z9XKYDT4p8HR 01-0002 overall height Height of the housing of the lighting  1E0, mm n.a. 100
0ZbD$wO_ system. Measured over γ (Vertical).
See Figure 1 – first axis of luminaire.
1uJglYpRnFpQ4tSt 01-0003 overall length Length of the housing of the lighting  1E0, mm n.a. 1 500
HaR2Pf system. Measured in the C90-C270
plane (90° Horizontal,). See Figure 1–
third axis of luminaire.
1dPvrZN3vEIB0n0v 01-0004 overall width Width of the housing of the lighting  1E0, mm n.a. 200
wYvDcX system. Measured in the C0-C180
plane (0° Horizontal). See Figure 1–
second axis of luminaire.
1RPyGAgMf4hRTZ0 01-0005 mass Mass of the lighting system.  1E-2, kg n.a. 1,40
DogLFnU Commonly used as “weight”.
2A6xVlUTj9QP1G$q 01-0006 cut-out diameter Diameter of the cut-out hole  1E0, mm n.a. 180
b4FiWv (for recessed or flush mount).
1RIsLltoX1whNaYk 01-0007 recessed Required minimum installation  1E0, mm n.a. 130
aCoHXJ required depth depth, height of the invisible/ hidden
mounting part of the luminaire (for
recessed or flush mount).
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ISO/DTS 7127:2023(E)
GUID ID Name Description Symbol Format, Unit Value set Examples
2VEYAfd7j4FQtJgA 01-0008 cutting out Length of the cut-out hole  1E0, mm n.a. 13801 380
b_riA5 length (for recessed or flush mount).
2pFfNBOuv1Tf_RT 01-0009 cutting out Width of the cut-out hole  1E0, mm n.a. 175
QpYktGL width (for recessed or flush mount).
1zs4Cj96j3d8TWAe 01-0010 luminaire Three-dimensional simplified shape  n.a. Cylinder, Cube
eixJga housing shape of the lighting system.
Cuboid,
3D
Cube,
Cone,
Pyramid,
Sphere,
Half-Sphere,
User Defined
1Zek8UyXfE6gToN 01-0011 shipping weight Weight of the shipping package of the  1E-2, kg n.a. 2,40
8_RDHFg lighting system.
1i_XY2Awj5RRadN 01-0012 shipping height Height of the packed lighting system  1E0, mm n.a. 150
mgPS3yQ as it is shipped.
10UDC$GOvEHexm 01-0013 shipping length Length of the packed lighting system  1E0, mm n.a. 16501 650
f_I8j9xG as it is shipped.
1ybyhd8TbACg99O 01-0014 shipping width Width of the packed lighting system  1E0, mm n.a. 260
xpWMoOg as it is shipped.
0yvFhm4xvDggZvL 01-0015 type of Type of packaging. Available types of  n.a. Carton, Pallet
zgzhiyq packaging packaging to be specified by the
Pallet,
manufacturers.
Container,
Without,
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ISO/DTS 7127:2023(E)
GUID ID Name Description Symbol Format, Unit Value set Examples
Other
16XdmXw8T3HOIi 01-0016 impact Degree of protection provided by  n.a. IK00, IK 10
0TOcc8LH protection rating enclosures for electrical equipment
IK01,
IK against external mechanical impacts
IEC 62262:2002 and
according to IK02,
IEC 60068-2-75:2014.
IK03,
IK04,
IK05,
IK06,
IK07,
IK08,
IK09,
IK10
1LrBLaYtnCARKper 01-0017 glow wire The glow wire test for fire hazard  1E0, °C 550 °C, 750
F_2Ykh resistance according to IEC 60695-2:2014 to
650 °C,
test electrical products, assemblies,
or individual components. 750 °C,
850 °C,
960 °C
1284Zyx8D4uR55X 01-0018 needle flame test Method for testing and assessment of  n.a. Yes
2cRsWzu the fire hazard of plastic material
No
using a needle flame according to
IEC 60695-11-5:2017. “Yes” for the
product has passed the test.
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ISO/DTS 7127:2023(E)
GUID ID Name Description Symbol Format, Unit Value set Examples
1PMNxHS2z4tRuwi 01-0019 number of light Number of surfaces with light output.  1E0, n.a. n.a. 1
QxyzRfs outputs Equals the number of positions for
light distribution curves of the
luminaire.
1mHV_4yHLEFuxO 01-0020 diameter of the Identical with name.  1E0, mm n.a. 190
aIDlNmNn luminous area
0WXZRI6CD2KfL4x 01-0021 height of the Height measured over z-axis. See  1E0, mm n.a. 4
C1uuLBF luminous area Figure 1 – first axis of luminaire.
1auIwSthrFvRTJgX 01-0022 length of the Length measured aligned with the y- 1E0, mm n.a. 14301 430
6NfO9Z luminous area axis, in the C90-C270 plane. See
Figure 1– third axis of luminaire.
2SqBhDZKD1hBjG 01-0023 width of the Width measured aligned with the x- 1E0, mm n.a. 192
WsV4q_GQ luminous area axis, in the C0-C180 plane. See
Figure 1– second axis of luminaire.
2gBflnlCfCgwR3hT_ 01-0024 cable length Cable for power supply. Zero means  1E0, mm n.a. 24002 400
QVGtQ no cable supplied.
1oCak0l6v9Bew_SH 01-0025 Pliable The luminaire body is flexible.  n.a. Yes
OfRFnw
No
3CckyLFxX8KxZVvg 01-0026 ground recessed Specific application class for ground  n.a. n.a. In restricted
ilS7Jt accessibility recessed luminaires according to accessible
class temperature limits, dimensions, and areas
static load resistance in kN according
to IEC 60598-2-13.
3AgJzo7ND4zB4c3y 01-0054 ground recessed Static load of ground recessed  1E0, kN n.a. 20
sHuewK luminaire static luminaire according to IEC 60598-2-
load 13.
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ISO/DTS 7127:2023(E)
GUID ID Name Description Symbol Format, Unit Value set Examples
0f2af0EifB1Qi6xalT 01-0029 sealing material Material of the sealing of a luminaire.  n.a. n.a.
s1Xn
0iACWRZ2HAFfY7U 01-0057 reflector Material of the reflector of a  n.a. n.a. Aluminium
BnCGjHq material luminaire.
3jAmXEFTn9oPlBD 01-0030 silicone-free States whether the luminaire is  n.a. Yes
_oO4BfE silicon-free.
No
2DJLgonKH2zvtUyl 01-0031 halogen-free States whether the product is  n.a. Yes
GDtoL3 halogen-free according to IEC 61249-
No
2-21:2004.
3IPpBFdz17PB0W0 01-0032 temperature on Average temperature of light  1E0, °C n.a.
suiESss light aperture emitting surface of a luminaire.
30M$RN1TX7$gz0 01-0033 operating Range defined by the minimum and  1E0, °C n.a. -40
O8$bv0j4 temperature maximum operating temperatures at
25
which the luminaire operates
normally as specified by the supplier
or manufacturer.
0jRoUrk2nF5QFen 01-0034 minimum Describes the minimum required  1E0, mm n.a. 50
mXXlBTS distance distance of the luminaire housing to
other objects.
3GwYrPlNbAYu8gP 01-0035 maximum Maximum of possible values for the  1E0, ° n.a.
AOJZgwc orientation angle rotation of the orientation angle
(around the z-axis). See Figure 1 –
first axis of luminaire.
3qn7sE55H1FuwsB 01-0036 minimum Minimum possible value for the  1E0, ° n.a.
ozcktbX orientation angle rotation of the orientation angle
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ISO/DTS 7127:2023(E)
GUID ID Name Description Symbol Format, Unit Value set Examples
(around the z-axis). See Figure 1 –
first axis of luminaire.
26KAJOVBvF8gIMO 01-0037 orientation angle Step width for the orientation angle  1E0, ° n.a.
ZaAOFTV steps (around the z-axis). See Figure 1 –
first axis of luminaire.
2NmVhTk4TFfvwD 01-0038 orientation angle Default value for the orientation  1E0, ° n.a.
NSYyqj$4 default angle (around the z-axis). See
Figure 1 – first axis of luminaire.
0qiz0v1kLAPBRWA 01-0039 orientation angle Selected value for the orientation  1E0, ° n.a.
W6wO1PA selected value angle (around the z-axis). See
Figure 1 – first axis of luminaire.
05nmPIMs186u1u1 01-0040 maximum tilt Maximum possible value for the  1E0, ° n.a.
s5MSd23 angle rotation of the tilt angle (around the
x-axis). See Figure 1– second axis of
luminaire.
3ZWzCOV090TukL 01-0041 minimum tilt Minimum possible value for the  1E0, ° n.a.
TsY8Vcua angle rotation of the tilt angle (around the
x-axis). See Figure 1– second axis of
luminaire.
0_oftQZ_jB$e1oGo 01-0042 tilt angle steps Step width for the tilt angle (around  1E0, ° n.a.
WeQWoV the x-axis). See Figure 1– second axis
of luminaire.
0w56LObA94ivbaii 01-0043 tilt angle default Default value for the tilt angle  1E0, ° n.a.
kyEXf2 (around the x-axis). See Figure 1–
second axis of luminaire.
3VHFOwjl13sv6CB 01-0044 tilt angle Selected value for the tilt angle  1E0, ° n.a.
YkwU2wh selected value (around the x-axis). See Figure 1–
second axis of luminaire.
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ISO/DTS 7127:2023(E)
GUID ID Name Description Symbol Format, Unit Value set Examples
3zsZztBEH9sPA24P 01-0045 maximum turn Maximum possible value for the  1E0, ° n.a.
OLsfWn angle rotation of the turn angle (around
the y-axis). Turn can also be referred
to as ‘twist’ or ‘cant’. See Figure 1–
third axis of luminaire.
3WFOEtzHjE2gEwI 01-0046 minimum turn Minimum possible value for the  1E0, ° n.a.
qwNt23B angle rotation of the turn angle (around
the y-axis). Turn can also be referred
to as ‘twist’ or ‘cant’. See Figure 1–
third axis of luminaire.
1S1uI1hob0OAsYA 01-0047 turn angle steps Step width for the turn angle (around  1E0, ° n.a.
UDvnB5e the y-axis). Turn can also be referred
to as ‘twist’ or ‘cant’. See Figure 1–
third axis of luminaire.
0Y3iFNJcH3Xh_0Ax 01-0048 turn angle Default value for the turn angle  1E0, ° n.a.
e6FRZy default (around the y-axis). Turn can also be
referred to as ‘twist’ or ‘cant’. See
Figure 1– third axis of luminaire.
0HKPlHCMXFOOmt 01-0049 turn angle Selected value for the turn angle  1E0, ° n.a.
qPiFpiwZ selected value (around the y-axis). Turn can also be
referred to as ‘twist’ or ‘cant’. See
Figure 1– third axis of luminaire.
3ejPldyc9Bau0HaT 01-0050 3D model file The description of a location of the  n.a. n.a. C:\,
HZMtva 3D model file.
URL
3p1kEeiDL4i8RySi 01-0051 cable inlet Cable inlet, type and count, free  n.a. n.a. 2xPG13.5
TGkUyU description
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ISO/DTS 7127:2023(E)
GUID ID Name Description Symbol Format, Unit Value set Examples
0fa4jPy7f3KhErAn_ 01-0052 flush mounting Mechanical device to get the  n.a. n.a.
5SUg7 box luminaire or sensor mounted into
concrete.
2hXE7M6N9DYec$I 01-0058 suspension Distance from ceiling to mounting  1E0, mm n.a. 500
ZwiY3ia height point of the suspended lighting
system.
Table 2 — Electrical properties
GUID ID Name Description Symbol Format, Unit Value set Examples
2FA0ih18LF_uKt46 02-0001 apparent power Apparent Power of the product S 1E0, VA n.a.
e5ErIv according to IEC 60050.
17a067965CqhDel 02-0002 rated input power Input power consumed by the light  1E0, W n.a.
Q$Y3mcP source(s), control
...

FINAL
TECHNICAL ISO/DTS
DRAFT
SPECIFICATION 7127
ISO/TC 274
Light and lighting — Building
Secretariat: DIN
information modelling properties for
Voting begins on:
2023-03-20 lighting — Lighting systems
Voting terminates on:
2023-05-15
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ISO/DTS 7127:2023(E)
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NATIONAL REGULATIONS. © ISO 2023

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ISO/DTS 7127:2023(E)
FINAL
TECHNICAL ISO/DTS
DRAFT
SPECIFICATION 7127
ISO/TC 274
Light and lighting — Building
Secretariat: DIN
information modelling properties for
Voting begins on:
lighting — Lighting systems
Voting terminates on:
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© ISO 2023
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BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/DTS 7127:2023(E)
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DRAFT INTERNATIONAL STANDARDS MAY ON
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NATIONAL REGULATIONS. © ISO 2023

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ISO/DTS 7127:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principal structure . 2
4.1 General . 2
4.2 Detailed description of set of attributes . 2
4.2.1 General . 2
4.2.2 GUID . 3
4.2.3 ID . 3
4.2.4 Name . 3
4.2.5 Description . 3
4.2.6 Symbol . 3
4.2.7 Format, Unit . 3
4.2.8 Value set . 3
4.2.9 Examples . 4
4.3 Further IT­related attributes . 4
5 Properties for lighting systems . 5
Bibliography .58
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ISO/DTS 7127:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non­governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 274, Light and Lighting.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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ISO/DTS 7127:2023(E)
Introduction
Building information modelling (BIM) is a concurrent process that gives engineering and construction
professionals the tools to more efficiently plan, construct, and manage buildings and infrastructure.
Within standardisation committees much work is being performed to define the fundamental principles
of BIM that will allow this to happen in an effective and consistent manner.
For lighting applications, it is essential that this work is monitored and where required input is made to
ensure that the requirements for lighting applications are considered.
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TECHNICAL SPECIFICATION ISO/DTS 7127:2023(E)
Light and lighting — Building information modelling
properties for lighting — Lighting systems
1 Scope
This technical specification identifies and clarifies lighting properties for digital building design and
maintenance.
This document provides all the needed properties to design and to describe lighting systems. These
properties are intended to be used for mapping between data providers and requesters. The mapping
of the identifiers enables the exchange of luminaire and sensing device data within different databases.
The unambiguous mapping and description of properties improves the data quality, reduces
misinterpretations and the processing time in digital environments. Therefore, the properties listed
in this document establish the essential description of lighting systems in BIM systems and databases.
The listed properties in this document are used to structure the product data sheet which is
complemented with real product information.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
ISO 23386:2020, Building information modelling and other digital processes used in construction —
Methodology to describe, author and maintain properties in interconnected data dictionaries
CIE S 017:2020, ILV: International Lighting Vocabulary
ISO 80000­7, Quantities and units — Part 7: Light
3 Terms and definitions
For the purposes of this document, the following terms and definitions given in CIE S 017, ISO 80000-7
and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
building information modelling
BIM
use of a shared digital representation of a built object (including buildings, bridges, roads, process
plants, etc.) to facilitate design, construction and operation processes to form a reliable basis for
decisions
Note 1 to entry: The acronym BIM also stands for the shared digital representation of the physical and functional
characteristics of any construction works.
[SOURCE: ISO 29481­1:2016, 3.2]
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ISO/DTS 7127:2023(E)
3.2
data dictionary
database that contains metadata
[SOURCE: ISO/IEC 2382:2015, 2121501]
3.3
attribute
data element for the computer-sensible description of a property, group of properties, etc.
Note 1 to entry: An attribute describes only one single detail of a property or a group of properties.
EXAMPLE The GUID of a property, the name of a property, the definition of a group of properties.
[SOURCE: ISO 23386:2020, 3.4, modified – Example extended]
3.4
property
inherent or acquired feature of an item
EXAMPLE Thermal efficiency, heat flow, sound reduction index, sound power level, colour.
[SOURCE: ISO 23386:2020, 3.17]
4 Principal structure
4.1 General
A lighting system (for example a luminaire or a sensing device) consists out of properties which
describes it and make it possible to communicate about it in application or specification.
The properties for lighting systems have been organized in tables listed in Clause 5 according to
different disciplines. This sub-division is indicative only and not to be taken as exclusive:
— Mechanical properties – ID 01 (Table 1);
— Electrical properties – ID 02 (Table 2);
— Emergency lighting properties – ID 03 (Table 3);
— Photometric properties – ID 04 (Table 4);
— Sensing device properties – ID 05 (Table 5);
— Mounting & Accessory properties – ID 06 (Table 6);
— Marketing properties – ID 07 (Table 7);
— Operations & Maintenance properties – ID 08 (Table 8);
— Environmental properties – ID 09 (Table 9).
4.2 Detailed description of set of attributes
4.2.1 General
The structure of the attributes is according to ISO 23386:2020 and enhanced by the property ID.
The properties have no mandatory or optional aspect. All properties are equal in importance and
hierarchy. The use case and the application provide a structure and are mandatory to the properties.
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ISO/DTS 7127:2023(E)
4.2.2 GUID
In ISO 23386:2020 named “Globally unique identifier” (PA001).
Identifier given to a product that guarantees its uniqueness throughout its entire life (defined in
ISO 6707­2:2017, 3.2.46).
This attribute identifies the property unambiguously. A Globally Unique identifier GUID is generated
using an algorithm. This machine­readable code will allow matching across databases, lists and data
template.
In IFC and ISO 12006­3 the compressed version of GUID is used. It can be uncompressed to the standard
GUID with open tools.
4.2.3 ID
This attribute identifies the property unambiguously. It is human-readable and corresponds to the
globally unique identifier.
Note The ID always starts with the table number from 4.1 followed by a dash and an individual serial
number with four digits.
4.2.4 Name
In ISO 23386:2020 named “Names in language en-EN” (PA016).
The name of the property.
4.2.5 Description
In ISO 23386:2020 named “Descriptions in language en-EN” (PA018).
This attribute is used to provide a plain language description of the property.
For some descriptions the name is enough. To avoid the repeating of the name, just “identical with
name.” is entered.
4.2.6 Symbol
In ISO 23386:2020 named “Symbols of the property in a given property group” (PA022).
Symbols for quantities are given in the ISO 80000 and IEC 80000 series. The symbols for quantities are
written in italics. A given symbol can indicate different quantities. [ISO 80000-1:2009].
4.2.7 Format, Unit
In ISO 23386:2020 named “Digital format” (PA037).
Precision is the maximum number of significant digits that can be represented in a format, or the
number of digits that a result is rounded to [ISO/IEC 60559:2020].
In ISO 23386:2020 named “Units” (PA033).
Concept type representing a scale that enables a value to be measured. Properties that do not have a
unit are be designated as not applicable (n.a.).
4.2.8 Value set
In ISO 23386:2020 named “List of possible values in language en-EN” (PA039).
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ISO/DTS 7127:2023(E)
Collection of acceptable values for a property. Values outside the value set are not permitted. Multiple
values may be possible for some properties.
4.2.9 Examples
In ISO 23386:2020 named “Examples in language en-EN” (PA019).
Samples for a value of the specific property.
4.3 Further IT-related attributes
Where potential attributes are not specified in 4.2, they may be defined separately within a data
dictionary. These attributes can be found in ISO 23386:2020:
— Definitions in language en-EN (PA017): A description of the attribute in order to define it
unambiguously;
— Method of measurement (PA029): Evaluation of construction products to ensure their suitability
according to requirements in harmonised technical specifications;
— Name of the defining values (PA034): In a table of values, this attribute provides the name of the
column headers;
— Data type (PA030): Format for expressing the value of the property. This can be understood as
the storage type from a software perspective. (ISO/IEC 11404:2007, 8.1) Examples: String, Float,
Integer;
— Status (PA002): Status of the property during its life cycle. Example: Active;
— Date of creation (PA003): Date of validation of the property creation request. All dates in
accordance with ISO 8601. Format=YYYY -MM -DDThh: mm: ssTZD. Example: 2014-04-30T10:39:53Z;
— Date of activation (PA004): Date after when the property can be used;
— Date of last change (PA005): Date of validation of the last change request;
— Date of revision (PA006);
— Date of version (PA007);
— Date of deactivation (PA008): Date when property becomes obsolete. The property is maintained
in the dictionary;
— Version number (PA009): Enables tracking of major changes;
— Revision number (PA010): Enables tracking of minor changes. If the version number changes, the
revision number starts again at 1. Examples: new translation, changes of typos;
— List of replaced properties (PA011): Identifier of the replaced property (or properties). List of
GUIDs;
— List of replacing properties (PA012): Identifier of the replacing property (or properties). List of
GUIDs;
— Deprecation explanation (PA013): Reason of deprecation. Deprecated may indicate the property
will be removed in the future. This explanation shall be written in international English (EN).
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ISO/DTS 7127:2023(E)
5 Properties for lighting systems
In Table 1 the mechanical properties of a lighting system are described. This figure shows the
orientation of a luminaire in the in the (C, γ) coordinate system from CIE 121:1996 to clarify the location
relationship.
Key
1 first axis of luminaire
2 second axis of luminaire
3 third axis of luminaire
4 polar axis of photometer
5 C half plane
Figure 1 — Orientation of a luminaire in the (C, γ) coordinate system from CIE 121:1996; first
axis of luminaire (γ) is in the IES LM-63-19, the vertical or the z-axis; second axis of luminaire
(C0-C180) is in the IES LM-63-19, the 0° horizontal or the x-axis; third axis of luminaire
(C90-C270) is in the IES LM-63-19, the 90° horizontal or the y-axis
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ISO/DTS 7127:2023(E)
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Table 1 — Mechanical properties
GUID ID Name Description Symbol Format, Unit Value set Examples
2GZ1YB8enFVhD­ 01­0001 overall diameter Overall diameter of the housing of the 1E0, mm n.a. 200
HOKgLc$BU round lighting system.
2F38RxmOf3ow­ 01­0053 overall radius Overall radius of the housing of the 1E0, mm n.a. 100
0715JRf5OO lighting system. Suitable for circular lu­
minaires or sensing devices or segment
geometry. Not suitable for ellipsoid
forms.
19Z9XKYDT­ 01­0002 overall height Height of the housing of the lighting 1E0, mm n.a. 100
4p8HR0ZbD$wO_ system. Measured over γ (Vertical). See
Figure 1 – first axis of luminaire.
1uJglYpRnFpQ4tSt­ 01­0003 overall length Length of the housing of the lighting 1E0, mm n.a. 1 500
HaR2Pf system. Measured in the C90-C270
plane (90° Horizontal,). See Figure 1–
third axis of luminaire.
1dPvrZN3vEIB0n­ 01­0004 overall width Width of the housing of the lighting 1E0, mm n.a. 200
0vwYvDcX system. Measured in the C0-C180 plane
(0° Horizontal). See Figure 1– second
axis of luminaire.
1RPyGAgMf4hRTZ­ 01­0005 mass Mass of the lighting system. Commonly 1E­2, kg n.a. 1,40
0DogLFnU used as “weight”.
2A6xVlUTj9QP­ 01­0006 cut­out diameter Diameter of the cut­out hole (for re­ 1E0, mm n.a. 180
1G$qb4FiWv cessed or flush mount).
1RIsLltoX1whNaYk­ 01­0007 recessed required Required minimum installation depth, 1E0, mm n.a. 130
aCoHXJ depth height of the invisible/ hidden mount­
ing part of the luminaire (for recessed
or flush mount).
2VEYAfd7j4FQt­ 01­0008 cutting out length Length of the cut­out hole (for recessed 1E0, mm n.a. 1 380
JgAb_riA5 or flush mount).
2pFfNBOuv1Tf_ 01­0009 cutting out width Width of the cut­out hole (for recessed 1E0, mm n.a. 175
RTQpYktGL or flush mount).

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ISO/DTS 7127:2023(E)
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Table 1 (continued)
GUID ID Name Description Symbol Format, Unit Value set Examples
1zs4Cj96j3d8TWAeeix­ 01­0010 luminaire housing Three-dimensional simplified shape of n.a. Cylinder, Cube
Jga shape 3D the lighting system.
Cuboid,
Cube,
Cone,
Pyramid,
Sphere,
Half­Sphere,
User Defined
1Zek8UyXfE6gToN8_ 01­0011 shipping weight Weight of the shipping package of the 1E­2, kg n.a. 2,40
RDHFg lighting system.
1i_XY2Awj5RRadN­ 01­0012 shipping height Height of the packed lighting system as 1E0, mm n.a. 150
mgPS3yQ it is shipped.
10UDC$GOvEHex­ 01­0013 shipping length Length of the packed lighting system as 1E0, mm n.a. 1 650
mf_I8j9xG it is shipped.
1ybyhd8TbACg99Ox­ 01­0014 shipping width Width of the packed lighting system as 1E0, mm n.a. 260
pWMoOg it is shipped.
0yvFhm4xvDggZv­ 01­0015 type of packaging Type of packaging. Available types of n.a. Carton, Pallet
Lzgzhiyq packaging to be specified by the manu­
Pallet,
facturers.
Container,
Without,
Other

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Table 1 (continued)
GUID ID Name Description Symbol Format, Unit Value set Examples
16XdmXw8T3HOIi­ 01­0016 impact protection Degree of protection provided by enclo­ n.a. IK00, IK 10
0TOcc8LH rating IK sures for electrical equipment against
IK01,
external mechanical impacts according
to IEC 62262:2002 and IEC 60068­2­
IK02,
75:2014.
IK03,
IK04,
IK05,
IK06,
IK07,
IK08,
IK09,
IK10
1LrBLaYtnCARK­ 01­0017 glow wire resist­ The glow wire test for fire hazard 1E0, °C 550 °C, 750
perF_2Ykh ance according to IEC 60695­2:2014 to test
650 °C,
electrical products, assemblies, or indi­
vidual components.
750 °C,
850 °C,
960 °C
1284Zyx8D4uR55X­ 01­0018 needle flame test Method for testing and assessment of n.a. Yes
2cRsWzu the fire hazard of plastic material using
No
a needle flame according to IEC 60695-
11-5:2017. “Yes” for the product has
passed the test.
1PMNxHS2z4tRu­ 01­0019 number of light Number of surfaces with light output. 1E0, n.a. n.a. 1
wiQxyzRfs outputs Equals the number of positions for light
distribution curves of the luminaire.
1mHV_4yHLEFux­ 01­0020 diameter of the Identical with name. 1E0, mm n.a. 190
OaIDlNmNn luminous area
0WXZRI6CD2KfL4x­ 01­0021 height of the lumi­ Height measured over z-axis. See 1E0, mm n.a. 4
C1uuLBF nous area Figure 1 – first axis of luminaire.
1auIwSthrFvRTJgX­ 01­0022 length of the lumi­ Length measured aligned with the 1E0, mm n.a. 1 430
6NfO9Z nous area y-axis, in the C90-C270 plane. See
Figure 1– third axis of luminaire.

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Table 1 (continued)
GUID ID Name Description Symbol Format, Unit Value set Examples
2SqBhDZKD1hBjG­ 01­0023 width of the lumi­ Width measured aligned with the x-ax­ 1E0, mm n.a. 192
WsV4q_GQ nous area is, in the C0­C180 plane. See Figure 1–
second axis of luminaire.
2gBflnlCfCgwR3hT_ 01­0024 cable length Cable for power supply. Zero means no 1E0, mm n.a. 2 400
QVGtQ cable supplied.
1oCak0l6v9Bew_ 01­0025 Pliable The luminaire body is flexible. n.a. Yes
SHOfRFnw
No
3CckyLFxX8KxZV­ 01­0026 ground recessed Specific application class for ground n.a. n.a. In restricted
vgilS7Jt accessibility class recessed luminaires according to accessible
temperature limits, dimensions, and areas
static load resistance in kN according
to IEC 60598­2­13.
3AgJzo7ND4zB4c3y­ 01­0054 ground recessed Static load of ground recessed lumi­ 1E0, kN n.a. 20
sHuewK luminaire static naire according to IEC 60598­2­13.
load
0f2af0EifB1Qi6x­ 01­0029 sealing material Material of the sealing of a luminaire. n.a. n.a.
alTs1Xn
0iACWRZ2HAFfY7UB­ 01­0057 reflector material Material of the reflector of a luminaire. n.a. n.a. Aluminium
nCGjHq
3jAmXEFTn9oPlBD_ 01­0030 silicone­free States whether the luminaire is sili­ n.a. Yes
oO4BfE con­free.
No
2DJLgonKH2zvtUylG­ 01­0031 halogen­free States whether the product is halo­ n.a. Yes
DtoL3 gen­free according to IEC 61249­2­
No
21:2004.
3IPpBFdz17PB0W­ 01­0032 temperature on Average temperature of light emitting 1E0, °C n.a.
0suiESss light aperture surface of a luminaire.
30M$RN1TX7$g­ 01­0033 operating temper­ Range defined by the minimum and 1E0, °C n.a. ­40
z0O8$bv0j4 ature maximum operating temperatures at
25
which the luminaire operates normally
as specified by the supplier or manufac­
turer.
0jRoUrk2nF5QFen­ 01­0034 minimum dis­ Describes the minimum required dis­ 1E0, mm n.a. 50
mXXlBTS tance tance of the luminaire housing to other
objects.

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Table 1 (continued)
GUID ID Name Description Symbol Format, Unit Value set Examples
3GwYrPlNbAYu8g­ 01­0035 maximum orien­ Maximum of possible values for the ro­ 1E0, ° n.a.
PAOJZgwc tation angle tation of the orientation angle (around
the z-axis). See Figure 1 – first axis of
luminaire.
3qn7sE55H1FuwsBo­ 01­0036 minimum orienta­ Minimum possible value for the rota­ 1E0, ° n.a.
zcktbX tion angle tion of the orientation angle (around
the z-axis). See Figure 1 – first axis of
luminaire.
26KAJOVBvF8gIMO­ 01­0037 orientation angle Step width for the orientation angle 1E0, ° n.a.
ZaAOFTV steps (around the z-axis). See Figure 1 – first
axis of luminaire.
2NmVhTk4TFfvwDN­ 01­0038 orientation angle Default value for the orientation angle 1E0, ° n.a.
SYyqj$4 default (around the z-axis). See Figure 1 – first
axis of luminaire.
0qiz0v1kLAP­ 01­0039 orientation angle Selected value for the orientation angle 1E0, ° n.a.
BRWAW6wO1PA selected value (around the z-axis). See Figure 1 – first
axis of luminaire.
05nmPIM­ 01­0040 maximum tilt Maximum possible value for the rota­ 1E0, ° n.a.
s186u1u1s5MSd23 angle tion of the tilt angle (around the x-axis).
See Figure 1– second axis of luminaire.
3ZWzCOV090TukLT­ 01­0041 minimum tilt Minimum possible value for the rota­ 1E0, ° n.a.
sY8Vcua angle tion of the tilt angle (around the x-axis).
See Figure 1– second axis of luminaire.
0_oftQZ_jB$e1o­ 01­0042 tilt angle steps Step width for the tilt angle (around 1E0, ° n.a.
GoWeQWoV the x-axis). See Figure 1– second axis of
luminaire.
0w56LObA94iv­ 01­0043 tilt angle default Default value for the tilt angle (around 1E0, ° n.a.
baiikyEXf2 the x-axis). See Figure 1– second axis of
luminaire.
3VHFOw­ 01­0044 tilt angle selected Selected value for the tilt angle (around 1E0, ° n.a.
jl13sv6CBYkwU2wh value the x-axis). See Figure 1– second axis of
luminaire.
3zsZztBEH9sPA­ 01­0045 maximum turn Maximum possible value for the 1E0, ° n.a.
24POLsfWn angle rotation of the turn angle (around the
y-axis). Turn can also be referred to as
‘twist’ or ‘cant’. See Figure 1– third axis
of luminaire.

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Table 1 (continued)
GUID ID Name Description Symbol Format, Unit Value set Examples
3WFOEtzHjE2gE­ 01­0046 minimum turn Minimum possible value for the ro­ 1E0, ° n.a.
wIqwNt23B angle tation of the turn angle (around the
y-axis). Turn can also be referred to as
‘twist’ or ‘cant’. See Figure 1– third axis
of luminaire.
1S1uI1ho­ 01­0047 turn angle steps Step width for the turn angle (around 1E0, ° n.a.
b0OAsYAUDvnB5e the y-axis). Turn can also be referred to
as ‘twist’ or ‘cant’. See Figure 1– third
axis of luminaire.
0Y3iFNJcH3Xh_0Ax­ 01­0048 turn angle default Default value for the turn angle (around 1E0, ° n.a.
e6FRZy the y-axis). Turn can also be referred to
as ‘twist’ or ‘cant’. See Figure 1– third
axis of luminaire.
0HKPlHCMX­ 01­0049 turn angle select­ Selected value for the turn angle 1E0, ° n.a.
FOOmtqPiFpiwZ ed value (around the y-axis). Turn can also be
referred to as ‘twist’ or ‘cant’. See
Figure 1– third axis of luminaire.
3ejPldyc9Bau­ 01­0050 3D model file The description of a location of the 3D n.a. n.a. C:\,
0HaTHZMtva model file.
URL
3p1kEeiDL4i8RySiT­ 01­0051 cable inlet Cable inlet, type and count, free de­ n.a. n.a. 2xPG13.5
GkUyU scription
0fa4jPy7f3KhEr­ 01­0052 flush mounting Mechanical device to get the luminaire n.a. n.a.
An_5SUg7 box or sensor mounted into concrete.
2hXE7M6N9DYec$I­ 01­0058 suspension height Distance from ceiling to mounting 1E0, mm n.a. 500
ZwiY3ia point of the suspended lighting system.

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Table 2 — Electrical properties
GUID ID Name Description Symbol Format,
...