FprEN IEC 63494-2-1:2025

SLOVENSKI STANDARD
01-oktober-2024
Sistemi razsvetljave - Elektromehanski vmesniki - 2. del: Štiripolni elv vmesnik z
zasukom tipa zb18
Lighting systems - Electro-mechanical interfaces - Part 2-1: Four-pin elv twist-lock
interface type zb18
Systèmes d'éclairage - Interfaces électromécaniques - Partie 2-1: Interface tbt à
verrouillage rotatif (twist-lock) à quatre broches de type zb18
Ta slovenski standard je istoveten z: prEN IEC 63494-2-1:2024
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
91.160.01 Razsvetljava na splošno Lighting in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

34/1207/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63494-2-1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-08-30 2024-11-22
SUPERSEDES DOCUMENTS:
34/1096/CD, 34/1192A/CC
IEC TC 34 : LIGHTING
SECRETARIAT: SECRETARY:
United Kingdom Mr Petar Luzajic
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 23
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
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CENELEC, is drawn to the fact that this Committee Draft for
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This document is still under study and subject to change. It should not be used for reference purposes.
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TITLE:
Lighting systems - Electro-mechanical interfaces - Part 2-1: Four-pin ELV twist-lock interface Type
ZB18
PROPOSED STABILITY DATE: 2027
NOTE FROM TC/SC OFFICERS:
To support particular requirements for interchangeability performance and safety of the Zhaga Book 18 Edition
2.0 interface, TC 34 has approved the IEC 63494-2-1 project. Specifications for this interface can be found in
IEC PAS 63421:2022. The following manuscript for this proposed standard has been prepared by TC 34/WG
14 experts.
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

IEC CDV 63494-2-1 © IEC 2024 2 34/1207/CDV
1 CONTENTS
2 CONTENTS. 2
3 FOREWORD . 4
4 1 Scope . 6
5 2 Normative references . 6
6 3 Terms and definitions . 6
7 4 Overview and common information . 7
8 4.1 General . 7
9 5 Luminaire electro-mechanical interface . 7
10 5.1 Overview . 7
11 5.2 Mechanical interface . 8
12 5.2.1 Luminaire extension base plate . 8
13 5.2.2 Luminaire extension cap . 11
14 5.2.3 Luminaire extension module . 11
15 5.2.4 Luminaire extension receptacle . 11
16 6 Mechanical Safety. 12
17 6.1 Physical protection during insertion and removal . 12
18 6.1.1 Withstand torque test . 12
19 6.1.2 Retention torque test . 12
20 6.2 Physical safety in latching release mechanisms . 12
21 6.3 Protection against damaging pins during insertion . 12
22 6.4 Mechanical strength . 13
23 6.4.1 General . 13
24 6.4.2 Base plate tests . 13
25 6.4.3 Receptacle tests . 13
26 6.5 Retention force and torque . 13
27 6.5.1 General requirements . 13
28 6.5.2 Receptacle tests . 13
29 6.5.3 Base plate tests . 13
30 6.6 Bending moment . 13
31 6.6.1 Base plate bending moment . 13
32 6.6.2 Receptacle bending moment . 13
33 6.6.3 Compliance . 13
34 7 Electrical safety . 13
35 7.1 Electric shock protection . 13
36 7.2 Electric strength . 13
37 7.2.1 General . 13
38 7.2.2 Insulation voltage classification . 14
39 7.2.3 Dielectric withstand voltage . 14
40 7.2.4 Creepage and clearance . 14
41 7.2.5 Live insertion and disconnection . 14
42 7.3 Electrical interchangeability . 14
43 7.4 Endurance tests . 15
44 7.4.1 Heat aging . 15
45 7.4.2 Contact resistance . 15
46 8 Ambient condition safety . 15
47 8.1 Ingress protection – IP rating . 15

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48 8.1.1 General . 15
49 8.2 Rough service . 15
50 9 Construction . 15
51 9.1 Current carrying parts . 15
52 9.2 Resistance to heat, fire and tracking . 15
53 9.4 Protection against corrosion . 15
54 Annex A : Test groups and gauges . 16
55 A.1 General . 16
56 A.2 Luminaire extension module base plate (LEX-BP) gauges . 17
57 A.2.1 Mechanical stop gauge . 17
58 A.2.2 Gauge receptacle . 18
59 A.3 Luminaire extension receptacle (LEX-R) gauges . 18
60 A.3.1 Retention gauge. 18
61 A.3.2 Reference luminaire extension module . 19
62 A.3.3 Contact making . 20
63 A.3.4 Aging module . 20
64 Annex B : Information for luminaire and luminaire extension module design . 21
65 B.1 General . 21
66 B.2 Luminaire extension receptacle exclusion limit zone . 21
67 B.3 Electrical and communication interface . 21
68 B.3.1 General specifications . 22
69 B.3.2 Pin assignment . 22
70 B.3.3 Auxiliary power supply at the LEX-R . 22
71 B.3.4 Auxiliary power consumption for the LEX-M . 23
72 B.3.5 Communication . 23
IEC CDV 63494-2-1 © IEC 2024 4 34/1207/CDV
76 INTERNATIONAL ELECTROTECHNICAL COMMISSION
77 ____________
79 Lighting systems – Electro-mechanical interfaces – Part 2-1: Four-pin ELV
80 twist-lock interface Type ZB18
82 FOREWORD
83 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
84 national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation
85 on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other
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88 committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work.
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90 IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions
91 determined by agreement between the two organizations.
92 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus
93 of opinion on the relevant subjects since each technical committee has representation from all interested IEC National
94 Committees.
95 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees
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108 publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
109 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable
110 for the correct application of this publication.
111 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights.
112 IEC shall not be held responsible for identifying any or all such patent rights.
113 International Standard IEC 63494-2-1 has been prepared by IEC technical committee 34: Lighting
114 The text of this standard is based on the following documents:
FDIS Report on voting
XX/XXX/FDIS XX/XXX/RVD
116 Full information on the voting for the approval of this standard can be found in the report on voting
117 indicated in the above table.
118 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
119 The committee has decided that the contents of this publication will remain unchanged until the stability
120 date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific
121 publication. At this date, the publication will be
122 • reconfirmed;
123 • withdrawn;
124 • replaced by a revised edition, or
125 • amended.
The National Committees are requested to note that for this publication the stability data is
20XX.
IEC CDV 63494-2-1 © IEC 2024 5 34/1207/CDV
THIS TEXT IS INCLUDED FOR THE INFORMATION OF THE NATIONAL COMMITTEES AND
WILL BE DELETED AT THE PUBLICATION STAGE.
IEC CDV 63494-2-1 © IEC 2024 6 34/1207/CDV
127 Lighting systems – Electro-mechanical interfaces – Part 2-1: Four-pin ELV twist-
128 lock interface Type ZB18
129 1 Scope
130 This document of the IEC 63494-2 series specifies the interchangeability requirements of an electro-
131 mechanical interface with four-pin ELV twist-lock interface – type ZB18 for use in lighting systems.
132 This twist-lock interface has four electrical contacts that are suitable for ELV voltages. Two
133 connections are intended for supply power and two are intended for digital communication. The
134 document specifies interchangeability related requirements for mechanical, electrical, ambient
135 conditions, positional orientation, communication protocol and pin assignments for the interface.
136 Specific requirements for the devices that can utilize the interface such as sensors, communication
137 modules, cameras, etc. are out of scope for this document. The document does not specify the
138 following aspects:
139 • The lighting technology
140 • The illumination performance
141 • Electromagnetic compatibility (EMC)
142 2 Normative references
143 The following referenced documents are indispensable for the application of this document. For dated
144 references, only the edition cited applies. For undated references, the latest edition of the referenced
145 document (including any amendments) applies.
146 IEC 60050 series, International Electrical Vocabulary
147 IEC 63105 Lighting systems and related equipment - Vocabulary
148 IEC 60664-1:2020 Insulation coordination for equipment within low-voltage supply systems - Part 1:
149 Principles, requirements and tests
150 IEC 62262:2002+A1:2021 Degrees of protection provided by enclosures for electrical equipment
151 against external mechanical impacts (IK code)
152 IEC 62504 Terms and definitions for LEDs and LED modules in general lighting
153 IEC PAS 63421 Zhaga Interface Specification Book 18 including Book 1 – Outdoor Luminaire
154 Extension Interface
155 IEC 63494-1:202x Lighting systems – Electro-mechanical interfaces – Part 1: Safety
156 NOTE: A future standard IEC 63494-1:202x is in preparation to support this reference.
157 DiiA specification – DALI Part 351 – Luminaire-mounted Control Devices, Version 1.0, October 2019.
158 NOTE: A future standard IEC 62386-351 is in preparation to replace this reference.
159 3 Terms and definitions
160 For the purposes of this document, the terms and definitions in IEC 60050 (IEV), IEC 63105, IEC
161 62504 and IEC 63494-1 apply.
162 ISO and IEC maintain terminological databases for use in standardization at the following address:
163 • ISO Online browsing platform: available at http://www.iso.org.obp
164 • IEC Electropedia: available at http://www.electropedia.org/
165 3.1 luminaire extension base plate
166 (LEX-BP)
167 device-side interface for use with a mating receptacle designed to mate with LEX-R
168 NOTE TO ENTRY: The base plate may be an integral or separable part of the luminaire extension module.

IEC CDV 63494-2-1 © IEC 2024 7 34/1207/CDV
169 3.2 luminaire extension receptacle
170 (LEX-R)
171 luminaire-side interface mounted on an exterior surface designed to mate with a LEX-BP or a LEX-C
172 NOTE TO ENTRY: The luminaire extension receptacle (LEX-R) can be a built-in part or integral part of the luminaire.
173 3.3 luminaire extension module
174 (LEX-M)
175 device having a LEX-BP, intended to be mounted on a luminaire having a LEX-R
176 3.4 luminaire extension cap
177 (LEX-C)
178 cap having no electrical contacts and designed to mate with a LEX-R
179 3.5 luminaire bus
180 (L-B)
181 electrical bus within a luminaire and its mounting pole (if applicable)
182 4 Overview and common information
183 4.1 General
184 Electro-mechanical interface components specified in this document shall comply with IEC 63494 -
185 1:202x. The product marking requirements of IEC 63494-1:202x, clause 5 apply. Clause 5 of this
186 document specifies requirements for the luminaire electro-mechanical interface. Clauses 6 through 9
187 parallel the safety requirements in IEC 63494-1:202x.
188 Unless otherwise specified, mechanical dimensions refer to a temperature of (25 ± 5) °C.
189 All lengths that omit an explicit unit indication are in millimetres.
190 5 Luminaire electro-mechanical interface
191 5.1 Overview
192 Figure 1 gives an overview of a luminaire with luminaire extension receptacle, a luminaire extension
193 cap and a luminaire extension module with a luminaire extension base plate. The luminaire extension
194 receptacle is typically mounted on the exterior of the luminaire but can also be mounted on the interior
195 of the luminaire and the contacts of this receptacle are typically connected to the luminaire internal
196 electronics.
Interface specified in
this document
198 Figure 1 – Luminaire extension module, cap and receptacle in a system
199 The luminaire extension module is a separate unit which can easily be attached to the luminaire
200 extension receptacle by means of a twist-lock. Typically, it holds additional functionality to extend the
201 functionality of the total system.

IEC CDV 63494-2-1 © IEC 2024 8 34/1207/CDV
202 The luminaire extension cap is a separate unit which can also easily be attached to the luminaire
203 extension receptacle by means of a twist-lock. The functionality is to cover and protect the luminaire
204 extension receptacle in case no LEX-M is used.
205 The following interfaces are specified in this document:
206 • The mechanical interface between the LEX-R and the LEX-BP.
207 • The mechanical interface between the LEX-R and the LEX-C.
208 • The inclusion limit zone of the LEX-M.
209 • The exclusion limit zone of the luminaire to allow mounting of the LEX-M or LEX-C.
210 • The electrical and communication interface between the LEX-R(s) of the luminaire and one or
211 two LEX-Ms.
212 5.2 Mechanical interface
213 5.2.1 Luminaire extension base plate
214 The luminaire extension base plate (LEX-BP) shall comply with the specifications in Figure 2, Figure
215 3, Figure 4, Figure 5 and Figure 6. Unless indicated otherwise, the tolerance on linear dimensions is
216 ±0,12 mm and the tolerance on angular dimensions is ±1,0⁰.
217 The outer diameter of the LEX-BP shall be less than or equal to 89 mm.
218 The sealing surface shall be free of obstacles that can prevent mating .
219 Compliance shall be by optical measurement or tactile techniques.
221 Figure 2 – Mechanical interface of the LEX-BP: View 1
222 Note to Figure 2: X-axis and Y-axis coincide with centerline of locking points
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