IEC PAS 63329:2020

Zhaga interface specification Book 1 and Book 14

IEC PAS 63329:2020(E) This Book 14 defines three socketable LED Light Engines (with integrated Electronic Control Gears) and three socketable LED Modules (without integrated Electronic Control Gears). These LED Modules and LLEs have a rectangular shape and are typically applied in general lighting applications. These products are intended to be installed and replaced by professionals and non-professionals. This Book 1 defines the common concepts that underlie the Zhaga interface specifications. In addition, this Book 1 specifies general requirements for Zhaga compliant components of LED Luminaires.

General Information

• Status: Published
• Publication Date: 22-Oct-2020
• ICS: 29.140.99 - Other standards related to lamps
• Technical Committee: SC 34A - Electric light sources
• Current Stage: WPUB - Publication withdrawn
• Start Date: 03-Feb-2025
• Completion Date: 31-Jan-2025

Overview

IEC PAS 63329:2020 - “Zhaga interface specification Book 1 and Book 14” is a publicly available IEC specification that defines common concepts, general requirements and a set of standardized interfaces for socketable rectangular LED Modules and LED Light Engines (LLEs).

• Book 1 provides the common concepts, terminology and general requirements for Zhaga‑compliant LED luminaire components.
• Book 14 specifies three socketable LED Light Engines (with integrated Electronic Control Gears - ECGs) and three socketable LED Modules (without ECGs). These components are intended for general lighting, are rectangular in form factor, and are designed to be installed or replaced by professionals and non‑professionals.

Key Topics

The specification is organized to enable interoperability and reliable compliance testing. Major technical topics include:

• Mechanical interface - drawing principles, dimensioning, caps and holders, retention and keying to ensure physical interchangeability.
• Photometric interface - definition of Light Emitting Surface (LES), luminous flux, luminous intensity distribution, luminance uniformity, correlated color temperature (CCT) and color rendering (CRI).
• Electrical interface - nominal input current and forward voltage ranges, insulation and hot‑plugging considerations; separate requirements for LED Modules vs. LLEs (mains powered).
• Thermal interface - thermal management boundary conditions between module/LLE and luminaire.
• Control interface - optional dimming and control functionality and related test methods.
• Compliance test tools and tests - mechanical gauges, PETF (photometric and electrical test fixture), and detailed compliance test procedures for modules, LLEs and luminaires including mechanical, photometric, electrical, thermal and control tests.
• Product Data Set - standardized data requirements for product information and certification support.
• Compatibility & interchangeability - guidance on certification, market surveillance and compatibility checks.

Applications

IEC PAS 63329 is practical for:

• LED module and LLE manufacturers who need to design socketable, rectangular products that are interoperable across luminaire families.
• Luminaire OEMs and designers seeking modular components for easier assembly, maintenance and aftermarket upgrades.
• Testing labs and certification bodies that perform mechanical, photometric, electrical and thermal compliance testing.
• Specifiers, facility managers and installers evaluating products for replaceability, safety and long‑term maintenance.
  Benefits include improved interchangeability, reduced product development time, and clearer product data for procurement and maintenance.

Related Standards (if applicable)

• Zhaga interface family and other Zhaga Books (refer to Zhaga organization).
• IEC technical publications covering LED lighting safety, EMC and photometry (see IEC catalogue for related normative references).

Keywords: IEC PAS 63329, Zhaga Book 14, Zhaga Book 1, LED Light Engine, LED Module, socketable LED, interface specification, photometric interface, electrical interface, thermal management, product data set, compliance testing.

Standards Content (Sample)

IEC PAS 63329 ®
Edition 1.0 2020-10
PUBLICLY AVAILABLE
SPECIFICATION
colour
inside
Zhaga interface specification Book 1 and Book 14
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IEC PAS 63329 ®
Edition 1.0 2020-10
PUBLICLY AVAILABLE
SPECIFICATION
colour
inside
Zhaga interface specification Book 1 and Book 14

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.99 ISBN 978-2-8322-8946-4

– 2 – IEC PAS 63329:2020 © IEC 2020
CONTENTS
FOREWORD . 9
INTRODUCTION . 11
Subdivision 1 . 12
Zhaga Interface Specification Book 14 . 12
Summary (informative) . 12
Background . 12
Contents . 12
Intended Use . 12
1 General . 13
1.1 Introduction . 13
1.2 Scope . 13
1.3 Conformance and references . 13
1.3.1 Conformance . 13
1.3.2 References . 14
1.4 Definitions. 14
1.5 Acronyms . 15
1.6 Symbols . 15
1.7 Conventions . 15
1.7.1 Precedence . 15
1.7.2 Cross references . 15
1.7.3 Informative text . 15
1.7.4 Terms in capitals . 15
1.7.5 Units of physical quantities . 15
1.7.6 Decimal separator . 15
1.7.7 Limits . 15
2 Overview (Informative) . 15
2.1 General . 15
2.2 Description of the LED Module and the LED Light Engine . 16
2.3 Outline of this Book . 16
3 Mechanical interface . 18
3.1 Drawing principles . 18
3.2 Overview of the mechanical interface . 18
3.3 Definition of the mechanical interface of the LED Module and LED Light
Engine . 18
3.3.1 Definition of Book 14 LED Modules or LLEs for different categories . 18
3.3.2 Definition of the support Cap . 19
3.3.3 Definition of contact Cap. 19
3.3.4 Mass . 19
3.4 Definition of the mechanical interface of the Luminaire . 19
3.4.1 Definition of Book 14 Luminaires for different categories . 19
3.4.2 Definition of the support Holder . 20
3.4.3 Definition of contact Holder . 20
4 Photometric interface . 20
4.1 Light Emitting Surface . 20
4.2 Operating conditions . 21
4.3 Luminous flux . 21
4.4 Luminous intensity distribution . 21

4.5 Luminance uniformity . 21
4.6 Correlated color temperature . 21
4.7 Color rendering index . 21
5 Electrical interface . 21
5.1 Electrical interface between LED Module and Luminaire . 21
5.1.1 Nominal input current and forward voltage . 21
5.1.2 Electrical insulation. 22
5.1.3 Hot plugging . 22
5.2 Electrical interface between LLE and Luminaire . 22
5.2.1 Mains power . 22
5.2.2 Electrical insulation. 23
6 Thermal interface . 23
7 Control interface . 23
7.1 Dimming (optional) . 23
8 Compliance test tools . 25
8.1 LED Module/LED Light Engine test tools . 25
8.1.1 Gauges for test of mechanical interface . 25
8.1.2 Test Fixture PETF (photometric and electrical) . 25
8.2 Luminaire test tools . 25
8.2.1 Gauges for test of mechanical interface . 25
9 LED Module/LED Light Engine Compliance Tests . 26
9.1 LED Module/LED Light Engine mechanical interface tests . 26
9.1.1 Test of the dimensions D, W, H and A of the LLE . 26
9.1.2 Test of the contact Cap of the LED Module or LLE . 26
9.1.3 Test of the retention path of the contact Cap of the LED Module or LLE . 26
9.1.4 Test of the contact position of the contact Cap of the LED Module or
LLE . 27
9.1.5 Test of the key dimensions of the contact Cap of the LED Module or
LLE . 27
9.1.6 Test of the key of the contact Cap of the LED Module or LLE . 27
9.1.7 Test of the support Cap of the LED Module or LLE . 28
9.2 LED Module/LED Light Engine photometric interface tests . 28
9.2.1 Test on luminous flux . 28
9.2.2 Test on correlated color temperature (CCT) . 28
9.2.3 A.1.2.4 Test on color rendering index . 28
9.3 LED Light Engine Electrical interface tests . 29
9.4 LED Module Electrical interface tests . 29
9.5 LED Module/LED Light Engine thermal interface tests . 29
9.6 LED Light Engine control interface tests . 29
9.6.1 Test of dimming functionality . 29
9.7 LED Module/LED Light Engine Product Data Set test . 29
10 Luminaire compliance tests . 30
10.1 Luminaire mechanical interface tests . 30
10.1.1 Test of the dimensions L, W, H and A1 of the Luminaire . 30
10.1.2 Test of the contact Holder of the Luminaire – part 1 . 30
10.1.3 Test of the contact Holder of the Luminaire – part 2 . 30
10.1.4 Test of the contact Holder of the Luminaire – part 3 . 31
10.1.5 Test of the key of the contact Holder of the Luminaire – part 1 . 31
10.1.6 Test of the key of the contact Holder of the Luminaire – part 2 . 31

– 4 – IEC PAS 63329:2020 © IEC 2020
10.1.7 Test of support Holder of the Luminaire . 32
10.2 Luminaire for LED Light Engine Electrical interface tests . 32
10.3 Luminaire for LED Module Electrical interface tests . 32
10.4 Luminaire Product Data Set test. 32
Annex A Product Data Set requirements . 34
LED Module/LED Light Engine Product Data Set . 34
Luminaire Product Data Set . 34
Annex B History of Changes . 35
Subdivision 2 . 36
Zhaga Interface Specification Book 1 . 36
Summary (informative) . 36
Background . 36
Contents . 36
Intended Use . 36
1 General . 37
1.1 Introduction . 37
1.2 Scope . 37
1.3 Conformance and references . 37
1.3.1 Conformance . 37
1.3.2 Normative references . 37
1.3.3 Informative references . 38
1.4 Common definitions . 38
1.5 Common acronyms . 40
1.6 Common symbols . 40
1.7 Common conventions . 41
1.7.1 Cross references . 41
1.7.2 Informative text . 41
1.7.3 Terms in capitals . 41
1.7.4 Units of physical quantities . 41
1.7.5 Decimal separator . 41
2 Overview of Zhaga (informative) . 42
2.1 About Zhaga . 42
2.2 Zhaga building blocks and interfaces . 42
2.3 Compatibility and Interchangeability . 44
2.4 Product Data Set . 45
2.5 Compliance testing . 45
2.5.1 Certification . 45
2.5.2 Market surveillance . 46
2.6 Compatibility check . 46
2.7 Zhaga product certification . 47
3 Mechanical interface . 47
3.1 Drawing principles . 47
3.2 Mechanical interface between Separate ECG and Luminaire. 47
3.3 Thermal expansion . 47
3.4 Demarcation (Informative) . 47
4 Photometric interface . 49
4.1 Light Emitting Surface . 49
4.1.1 LES categories . 50

4.2 Operating conditions for measuring photometric parameters . 50
4.3 Luminous flux . 51
4.4 Luminous intensity distribution . 52
4.4.1 Beam angle and beam angle categories . 53
4.5 Luminance uniformity . 53
4.6 Correlated color temperature (CCT) . 53
4.7 Color rendering index (CRI) . 54
4.8 Luminaire Optics (informative) . 54
5 Electrical interface . 54
5.1 Electrical insulation (informative) . 54
6 Thermal interface . 54
6.1 Background information (informative) . 54
6.2 Generic thermal interface model . 55
6.2.1 General case . 55
6.2.2 Test Fixture TPTF . 57
6.2.3 Rated Operating Temperature and safety (informative) . 57
6.2.4 Thermal overload protection (Informative) . 57
6.2.5 Ambient Temperature . 57
6.2.6 Luminaires with multiple LLEs or multiple LED Modules . 58
6.2.6.1 Separate heat sinks . 58
6.2.6.2 One heat sink . 58
6.2.7 Thermal compatibility check . 58
6.2.8 Thermal uniformity . 59
6.2.9 Thermal Interface Material . 60
6.2.10 Surface planarity and roughness . 60
6.2.11 Aging of LED Light Engine or LED Module/LED Array (informative) . 60
6.2.12 Empty . 60
6.2.13 Ambient Temperature and thermal resistance (𝑹𝑹th) . 60
6.3 Simplified thermal interface model . 61
6.3.1 General case . 61
6.3.2 Rated Operating Temperature and safety (informative) . 61
6.3.3 Thermal overload protection (informative) . 61
6.3.4 Thermal compatibility check . 61
6.3.5 Thermal Interface Material . 62
6.3.6 Surface planarity and roughness . 62
6.3.7 Aging of LED Light Engine or LED Module/LED Array (informative) . 62
7 Control interface . 62
Annex A  Compliance tests . 63
A.0 LED Module/LED Array compliance tests . 63
A.0.1 LED Module/LED Array mechanical interface test . 63
A.0.1.1 Test in the mechanical interface or the LED Module/LED Array . 63
A.0.1.1.1 Test equipment . 63
A.0.1.1.2 Test conditions . 63
A.0.1.1.3 Test procedure . 63
A.0.1.1.4 Pass criteria . 63
A.0.2 LED Module/LED Array photometric interface tests . 63
A.0.2.1 Test on Luminous Flux. 63
A.0.2.1.1 Test equipment . 63

– 6 – IEC PAS 63329:2020 © IEC 2020
A.0.2.1.2 Test conditions . 63
A.0.2.1.3 Test procedure . 64
A.0.2.1.4 Pass criteria . 64
A.0.2.2 Test on Relative Partial Luminous Flux and beam angle . 64
A.0.2.2.1 Test equipment . 64
A.0.2.2.2 Test conditions . 64
A.0.2.2.3 Test procedure . 64
A.0.2.2.4 Pass criteria . 64
A.0.2.3 Test on correlated color temperature (CCT) . 65
A.0.2.3.1 Test equipment . 65
A.0.2.3.2 Test conditions . 65
A.0.2.3.3 Test procedure . 65
A.0.2.3.4 Pass criteria . 65
A.0.2.4 Test on color rendering index . 65
A.0.2.4.1 Test equipment . 65
A.0.2.4.2 Test conditions . 66
A.0.2.4.3 Test procedure . 66
A.0.2.4.4 Pass criteria . 66
A.0.2.5 Test on Luminance Uniformity . 66
A.0.3 LED Module/LED Array thermal interface tests. 66
A.0.3.1 Test on thermal power (𝑷𝑷th) . 66
A.0.3.1.1 Test equipment . 66
A.0.3.1.2 Test conditions . 66
A.0.3.1.3 Test procedure . 66
A.0.3.1.4 Pass criteria . 67
A.0.4 LED Module/LED Array electrical interface tests . 67
A.0.5 LED Module/LED Array Product Data Set test . 67
A.0.5.1 Test . 67
A.0.5.2 Pass criteria . 67
A.1 LLE compliance tests. 67
A.1.1 LLE mechanical interface tests . 67
A.1.1.1 Test of the mechanical interface of the Integrated LLE . 67
A.1.1.1.1 Test equipment . 67
A.1.1.1.2 Test conditions . 67
A.1.1.1.3 Test procedure . 68
A.1.1.1.4 Pass criteria . 68
A.1.2 LLE photometric interface tests . 68
A.1.2.1 Test on Luminous Flux. 68
A.1.2.1.1 Test equipment . 68
A.1.2.1.2 Test conditions . 68
A.1.2.1.3 Test procedure . 68
A.1.2.1.4 Pass criteria . 68
A.1.2.2 Test on Relative Partial Luminous Flux and beam angle . 68
A.1.2.2.1 Test equipment . 69
A.1.2.2.2 Test conditions . 69
A.1.2.2.3 Test procedure . 69
A.1.2.2.4 Pass criteria . 69
A.1.2.3 Test on correlated color temperature (CCT) . 69

A.1.2.3.1 Test equipment . 69
A.1.2.3.2 Test conditions . 70
A.1.2.3.3 Test procedure . 70
A.1.2.3.4 Pass criteria . 70
A.1.2.4 Test on color rendering index . 70
A.1.2.4.1 Test equipment . 70
A.1.2.4.2 Test conditions . 70
A.1.2.4.3 Test procedure . 70
A.1.2.4.4 Pass criteria . 71
A.1.2.5 Test on Luminance Uniformity . 71
A.1.3 LLE thermal interface tests . 71
A.1.3.1 Test on thermal power (𝑷𝑷th) . 71
A.1.3.1.1 Test equipment . 71
A.1.3.1.2 Test conditions . 71
A.1.3.1.3 Test procedure . 71
A.1.3.1.4 Pass criteria . 71
A.1.3.2 Test on Thermal power through the Thermal Interface Surface (𝑷𝑷th,rear) . 72
A.1.3.2.1 Test equipment . 72
A.1.3.2.2 Test conditions . 72
A.1.3.2.3 Calibration of 𝑷𝑷th,rear test setup . 73
A.1.3.2.4 Measurement of 𝑷𝑷th,rear of the LLE . 74
A.1.3.2.5 Pass criteria . 74
A.1.3.3 Empty . 75
A.1.3.4 Empty . 75
A.1.3.5 Temperature stabilization . 75
A.1.3.6 Position of measurement point for the temperature 𝒕𝒕r. 75
A.1.4 LLE electrical interface tests . 75
A.1.5 LLE control interface tests . 75
A.1.6 LLE Product Data Set test . 75
A.1.6.1 Test . 75
A.1.6.2 Pass criteria . 75
A.2 Luminaire compliance tests . 76
A.2.1 Luminaire mechanical interface tests . 76
A.2.1.1 Test of the mechanical dimensions of the Luminaire . 76
A.2.1.1.1 Test equipment . 76
A.2.1.1.2 Test conditions . 76
A.2.1.1.3 Test procedure . 76
A.2.1.1.4 Pass criteria . 76
A.2.2 Luminaire photometric interface tests . 76
A.2.3 Luminaire thermal interface tests . 76
A.2.3.1 Empty . 76
A.2.4 Luminaire electrical interface tests . 76
A.2.5 Luminaire control interface tests . 76
A.2.6 Luminaire Product Data Set test. 77
A.2.6.1 Test . 77
A.2.6.2 Pass criteria . 77
Annex B Guidelines for Demarcation measurement . 78
Annex C  History of changes . 80

– 8 – IEC PAS 63329:2020 © IEC 2020
Figure 1-1 – 3D-drawings of the Book 14 LED Module or LED Light Engine (informative). 13
Figure 2-1 – Schematic overview of the Book 14 LED Module or LLE with Caps and
Luminaire with Holders. . 16
Figure 3-1 – Mechanical dimensions of the Book 14 LED Module and LED Light
Engines . 18
Figure 3-2 – Mechanical dimensions of Book 14 luminaires . 20
Figure 2-1 – Schematic overview of a Luminaire and one or more non-integrated LED
Light Engines . 43
Figure 2-2 – Schematic overview of a Luminaire and one or more integrated LED Light
Engines . 43
Figure 2-3 – Schematic overview of a LED Light Engine with Integrated ECG . 44
Figure 2-4 – Schematic overview of a LED Light Engine with Separate ECG . 44
Figure 2-5 – Overview of test and certification of Zhaga products . 46
Figure 2-6 – Compatibility check . 47
Figure 3-1 – Example of a Demarcation Model (2-dimensional) . 48
Figure 3-2 – Example of a product which is compliant with the Demarcation Model . 48
Figure 3-3 – Example of a product which is not compliant with the Demarcation Model . 48
Figure 3-4 – Example of a product which is not compliant with the Demarcation Model . 49
Figure 4-1 – Rotationally symmetric solid angle bounded by the polar angles 𝛄𝛄𝛄𝛄 and
𝛄𝛄𝛄𝛄 which is used to define the Relative Partial Luminous Flux . 53
Figure 6-1 – Thermal model of a LLE – Luminaire or a LED Module – Luminaire
combination . 55
Figure 6-2 – Power conversion . 56
Figure 6-3 – Position of the Thermal Interface Surface in case of a configuration with
TIM . 60
Figure A-1 – Heat sensor equipment with Test Fixture and LLE-under-test . 72
Figure A-2 – Calibration of the heat flux measurement setup . 73
Figure A-3 – Position of measurement point for the temperature 𝒕𝒕r . 75
Figure B-1 – Example of a LED Array . 78
Figure B-2 – Example of a LED Array with sections . 78
Figure B-3 – Example of a LED Array with measurement points . 79

Table 3-1 – Values of dimensions for the Book 14 LED Modules and LED Light
Engines . 19
Table 3-2 – Values of dimensions for the Book 14 Luminaire . 20
Table 5-1 – Electrical input characteristics of the LED Module . 22
Table 5-2 – Electrical output characteristics of the Luminaire . 22
Table 5-3 – Mains power characteristics of the LLE and the Luminaire . 23
Table B-1 – Changes from Edition 1.1 to Edition 1.2. . 35
Table 4-1 – Definition of circular LES categories . 50
Table 4-2 – Test voltages for different Rated input voltages of the LLE . 51
Table 4-3 – Definition of luminous flux categories . 52
Table 4-4 – Definition of beam angle categories . 53
Table C-1 – Changes from Edition 1.7 to Edition 1.8 . 80

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ZHAGA INTERFACE SPECIFICATION BOOK 1 AND BOOK 14

FOREWORD
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