IEC PAS 63328:2020

Overview

IEC PAS 63328:2020 - Zhaga interface specification Book 1 and Book 12 - is a publicly available specification published by IEC that standardizes interfaces for modular LED lighting components.

• Book 1 defines the common concepts, conventions and general requirements that underlie all Zhaga interface specifications and sets out product data set and compliance testing principles for Zhaga‑compliant LED luminaire components.
• Book 12 specifies the mechanical, photometric, electrical and thermal interfaces for rectangular LED Arrays with a circular Light Emitting Surface (LES) and the mechanical interface between these LED Arrays and their corresponding Holder. (The mechanical interface between the Holder and the luminaire is covered by Zhaga Book 10.)

Keywords: IEC PAS 63328:2020, Zhaga interface specification, LED Array, Holder, LES, LED luminaires.

Key Topics and Requirements

• Mechanical interface: definitions of mechanical references, demarcation, keep‑in/keep‑out zones, mounting holes and holder cavity outlines specific to the LED Array and Holder.
• Photometric interface: requirements and tests for LES, luminous flux, luminous intensity distribution, luminance uniformity, correlated color temperature (CCT) and color rendering (CRI).
• Electrical interface: contact area definitions and tests for reliable electrical connection between LED Array and Holder.
• Thermal interface: generic thermal interface model, rated operating temperature, thermal power/overload considerations, thermal compatibility checks and guidance on thermal interface materials and surface planarity.
• Compliance testing: procedures and test tools (e.g., holder gauges, PETF test fixtures), specific tests for mechanical fit, photometry, thermal behaviour and Product Data Set verification.
• Product Data Set: mandatory metadata elements for LED Arrays and Holders to support interoperability, testing and market surveillance.

Applications and Who Uses This Standard

• LED module and holder manufacturers use the specification to design interchangeable components that ensure mechanical, electrical, photometric and thermal compatibility.
• Luminaire designers and OEMs adopt Zhaga interfaces to enable modular, upgradable light engines and to simplify assembly and maintenance.
• Test laboratories and certification bodies apply the compliance tests and product data set requirements for conformity assessment and market surveillance.
• Lighting specifiers, installers and procurement teams benefit from assured interchangeability and clear data for system selection and replacement.

Keywords: Zhaga Book 12, Zhaga Book 1, LED luminaire interoperability, modular LED lighting, compliance testing.

Related Standards

• Zhaga Book 10 (mechanical interface between Holder and Luminaire) - referenced by Book 12.
• IEC publications and Zhaga consortium documents referenced in Book 1 for terminology, testing and compliance frameworks.