Amendment 4 - Low-pressure sodium vapour lamps

This document serves as an official amendment to a foundational standard concerning lighting equipment designed for low-pressure sodium vapor discharge applications. Issued by an international consortium of electrical engineering experts, it specifically updates the technical specifications established in the earlier version of the primary standard. The content focuses on refining performance criteria, testing methods, and safety requirements to address evolving industry needs and technological advancements. It introduces necessary corrections and additions to ensure consistency across global markets for these specific lamp types. The text outlines detailed guidelines for manufacturers and testing laboratories, ensuring uniformity in the assessment of low-pressure sodium lamps. By incorporating these updates, the document helps maintain product reliability and interoperability within the electrical supply chain. It represents a coordinated effort to align technical regulations with current scientific understanding and practical application scenarios in the lighting sector.