On February 28, 2024, SC21 (Lamp and Lighting) of SAC/TC114 (Road Vehicles) issued the draft of standard Measurement method of electrical and photometric parameters of filament lamps for vehicles (herein after referred to as “the Standard Draft”) to call for public comments. The comments soliciting period will end on April 28, 2024.
This standard project is approved by the Standardization Administration of China (SAC) in November 2020. It specifies the electrical parameters, flux of filament lamps for vehicles, as well as the measurement system, conditions, and process of chromaticity coordinates.
The Standard Draft applies to filament lights used in road vehicle lighting and light signal devices, containing seven chapters and three annexes, with the main content as:
- Scope, terms and definitions;
- Measurement principles and devices for electrical parameters, flux, chromaticity coordinates and traceability;
- Measurement conditions: working environment, ageing, position and directions of ignition point, stable conditions and measurement voltage and current;
- Process data processing: preheating, measurement of electrical parameters, fulx and chromaticity coordinates.
- Requirements of testing reports
The general contents of this documents are drafted based on existing standards including GB/T 15043-2008 Method of measuring electrical and photometric characteristics for incandescent lamps, GB/T 26178-2010 The measurement of luminous flux, GB/T 7922-2008 Method of measuring color of light sources, and the American standard LM-45 Electrical And Photometric Measurement of General Service Incandescent Filament Lamps.
It does not adopt any internationals standard from ISO or IEC as the SC’s study and research shows a vacancy of such technical requirements in the present international standards. Foreign stakeholders and MNCs should note that experts from the SC consider this Standard Draft a significant one in China’s standard system for luminaires and lighting devices that support the implementation of the Light Sources for Power-driven Vehicles and their Trailers Safety requirement (a national mandatory standard under formulation) and Category Requirement of Light Sources for Power-driven Vehicles and their Trailers (a national voluntary standard under formulation). So, it is advised to review the Draft and provide feedback to the SC if any, and follow up on the future updates of it in order to take necessary actions to prepare the product to conform with the requirements.
A comparison chart of this Standard Draft with similar international standards including IEC 60809, ECE R37, LM-45 and SAE J2560 is available to show the technical differences, if you need further information on this comparison chart and on the topic, or the English version of the standard draft, please contact: assistant@bestao-consulting.com.