WG 14 - TC 34/WG 14

IEC 63494‑2-1:2026 specifies the interchangeability requirements of an electro-mechanical interface with four-pin extra-low-voltage (ELV) twist-lock interface – type ZB18 for use in lighting systems. This twist-lock interface has four electrical contacts that are suitable for ELV voltages. Two connections are intended for supply power and two are intended for digital communication. This document specifies interchangeability related requirements for mechanical, electrical, ambient conditions, positional orientation, communication protocol and pin assignments for the interface. Specific requirements for the devices that can utilize the interface such as sensors, communication modules, cameras, etc., are not within the scope of this document. This document does not specify the following aspects:
- the lighting technology,
- the illumination performance,
- electromagnetic compatibility (EMC).

IEC 63494-1:2026 specifies the safety requirements for electro-mechanical interfaces connecting lighting system devices to luminaires. These interfaces are used to mechanically connect, electrically power, and enable communication of lighting system devices on luminaires. Electro-mechanical interfaces up to and including 1 000 V AC or 1 500 V DC are included. This document specifies safety related mechanical, electrical, ambient conditions, and construction requirements for the interface components including protective covers. Specific requirements for the devices that can utilize the interface such as sensors, communication modules, cameras, etc., are not within the scope of this document.

IEC TR 63540:2024 provides information on outdoor lighting systems for selected applications. This document provides an overview of configuration, interfaces with other devices, communications, control strategies and characteristics of various outdoor lighting systems with relevant functionalities.
Applications selected for inclusion are:
- outdoor parking area lighting;
- road and street lighting;
- pedestrian and cycle pathways lighting.

IEC TR 63425:2022(E) provides information and guidance on the connectivity aspects of lighting systems to operate and to interconnect with other systems.
This document provides an overview of various connectivity solutions used within lighting systems, including topologies, communication protocols and related embedded functionalities.
This document does not express preference for any specific topology or protocol.

IEC TS 63105:2021(E) establishes terms and definitions in the field of lighting systems and related equipment.
Terminological literature for other fields of lighting is listed in the bibliography.