Low pressure sodium vapour lamps; amendment 3

This technical specification defines the requirements for low pressure sodium vapor lamps, addressing specific modifications to previous versions of the standard. It outlines the essential characteristics necessary to ensure the performance, safety, and interchangeability of these lighting devices within the electrical domain. The document details the physical dimensions, electrical parameters, and testing methods relevant to the lamp types covered. It serves as a reference for manufacturers and testing laboratories to verify compliance with established technical criteria. The content focuses on the revised aspects introduced in this amendment, providing updated guidelines that reflect the technological advancements and operational needs of the time. By specifying these requirements, the text aims to facilitate consistent quality assessment and safety validation for low pressure sodium vapor lamps globally. It does not include provisions for general installation but concentrates on the product specifications themselves to maintain uniformity across international trade and usage contexts.