GB/T 24461-2023
Technical requirements for luminaries used for cleanroom (English Version)
- Standard No.
- GB/T 24461-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 24461-2023
- Replace
- GB/T 24461-2009
- Introduction
GB/T 24461—2023 Technical Requirements for Cleanroom Lamps
I. Background and Significance of Standard Revision
Cleanrooms are special environments that require strict control of particle and pollutant concentrations and are widely used in electronics, medicine, bioengineering and other fields. With the advancement of science and technology and changes in application needs, the GB/T 24461—2009 version of the standard can no longer fully meet the technical requirements of modern cleanroom lamps. This revision mainly targets:
- New transient light artifact (TLA) terminology and control requirements
- Strengthen electromagnetic compatibility and photostability testing
- Optimize the sealing structure and dustproof performance of lamps
- Improve the light flux maintenance life standard of LED lamps
II. Standard Framework Comparison Table
Standard Dimensions 2009 Edition Requirements 2023 Edition Updates Scope of Application Applicable only to recessed lamps Covering fixed and recessed lamps, and extended to ceiling mounted lamps Term Definition Not involving concepts related to transient light artifacts New professional terms such as fluctuation depth, flicker, and stroboscopic effect Technical requirements No electromagnetic compatibility and transient light characteristic requirements Add electromagnetic compatibility test and transient light artifact limit requirements
III. Interpretation of core technologies and implementation suggestions
1. Transient light artifact (TLA) control requirements
Transient light artifacts are important indicators that may cause visual discomfort during the use of clean room lamps, mainly including:
- Fluctuation depth: must comply with the no significant effect level (NOEL) limit requirements of IEEE Std1789-2015
- Flicker and stroboscopic effects: Both the SVM value and $P_{\mathrm{st}}^{\mathrm{LM}}$ should not exceed 1
2. LED luminous flux maintenance life test method
According to GB/T33721-2017 standard, LED lamps need to be tested under rated working conditions for the time required for the luminous flux to decay to 70% of the initial value to ensure that it is not less than the rated life declared by the manufacturer (usually ≥25,000 hours).
3. Electromagnetic compatibility requirements
Luminaires must comply with the harmonic current, radio frequency disturbance and immunity test requirements in GB17625.1 and IEC TR 61547-1:2017 to avoid electromagnetic interference to the clean room environment.
4. Implementation recommendations
- Selection stage:Select lamps that meet the requirements of brightness limit, fluctuation depth and stroboscopic effect limit according to the clean room level.
- Installation requirements:Ensure that the sealing structure of the lamp reaches the IP5X protection level to prevent particles from entering and affecting the cleanliness.
- Test verification:Regularly monitor the light flux maintenance rate and electromagnetic compatibility indicators in actual applications to ensure long-term stable operation.
GB/T 24461-2023 Referenced Document
- GB 17625.1 Electromagnetic compatibility—Limits—Part 1: Limits for harmonic current emissions (equipment input current ≤ 16A per phase)
- GB 50034 Standard for lighting design of buildings
- GB/T 17743 Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment
- GB/T 18595-2014 Equipment for general lighting purposes.EMC immunity requirements
- GB/T 25915.4-2010 Cleanrooms and associated controlled environments.Part 4:Design,construction and start-up
- GB/T 2900.65 Electrician Terminology Lighting
- GB/T 31897.1 Luminaire performance.Part 1:General requirements
- GB/T 31897.201-2016 Luminaire performance.Part 2-1:Particular requirements for LED luminaires
- GB/T 33721-2017 Reliability test methods for LED luminaries
- GB/T 7000.1-2023 Luminaires Part 1: General requirements and tests
- GB/T 7000.201 Luminaires Part 2-1: Fixed general purpose luminaires with special requirements
- GB/T 7000.202 Luminaires Part 2-2: Recessed Luminaires with Special Requirements
- GB/T 9468 General requirements for the photometry and goniophotometry of luminaries
- IEC TR 61547-1:2017 Equipment for general lighting purposes - EMC immunity requirements- Part 1: An objective light flickermeter and voltage fluctuation immunity test method
- IEC TR 63158 Equipment for general lighting purposes - Objective test method for stroboscopic effects of lighting equipment
- IEEE Std 1789-2015 IEEE Recommended Practices for Modulating Current in High-Brightness LEDs for Mitigating Health Risks to Viewers
GB/T 24461-2023 history
- 2023 GB/T 24461-2023 Technical requirements for luminaries used for cleanroom
- 2009 GB/T 24461-2009 Technical requirements for luminaries used in cleanroom
