Brief: As the filament light source technology in the automotive industry is highly affected by the general lighting technology. LED light sources, which have fewer failures, less impact on the vehicles, are more robust, energy efficient, and have diverse performance, are now more and more favored by the market. The WP.29 Working Party on Lighting and Light Signaling (well known as WP.29/GRE) issued a series of guides, informal reports, and official amendments of the UN ECE Regulations to rule the surveillance and approval process of LED light sources in the past two years.
LED light sources include LED substitute light sources and LED replacement light sources, as well as some retrofit LEDs.
WP.29/GRE has clarified that retrofit LEDs are not included in the regulatory scope, and that LED substitutes can be type-approved in accordance with R128, and LED replacements to replace filament light sources of category H11 can be type-approved in accordance with R37.
LED substitute light sources
LED replacement light sources
Intended as alternative to incandescent filament light sources in new applications
Almost equivalent to the incandescent filament light sources
Intended to replace incandescent filament light sources in existing applications
Fully equivalent to incandescent filament light sources
No longer used for regulated and approved light sources
Used in the market for “other” light sources
• Not standardised
• Not approved
R.E.5, Annex 3, Group 4, Sheets for LED light
R.E.5, Annex 3, Group 5, Sheets for LED light
Type approval requirement
Technical equivalence criteria of LED substitutes LED replacements to filament light sources：
Parameters, main changes
Objective luminous flux
Light centre length
Distortion free zone (if any)
Normalized luminous intensity distribution
Size and position of the light-emitting-area
Homogeneity of the light-emitting-area
Contrast of the light-emitting area
Colour of emitted light
The spectral content
Maximum lamp outline dimensions
Functional interlock between light source and application
Electrical power consumption
The minimum voltage range
Dependency of the luminous flux on the applied voltage
Dependency of the luminous flux on elevated ambient temperatures
PWM operation to stabilize the applied
PWM operation to dim light sources
Note：=，≈，≠，+are compared to filament light sources.
TYPE APPROVAL PROCEDURE
General procedure of ECE type approval of LED substitutes and replacements:
2.Samples preparation and testing
5.Issuance of certificate
3.Photometry (luminous flux, normalised luminous intensity distribution)
4.Chromaticity (colour coordinates, red content, UV content )
5.Electrical testing (current test, power consumption, No light from ≤2 ms, flashes, PWM)
6.Thermal test (cap temperature)
7.EMC test (according to ECE R10 ESA requirements)
For the detailed type approval program, including sample requirements, test plan, the whole cycle, and cost of the project, please contact us.
ATIC COMPONENT HOMOLOGATION DEPARTMENT
ATIC Component Homologation Product Line focuses on regulation research and homologation service for components and consumer products especially for European and American markets. We are committed to provide one-stop global homologation solution for automotive components and consumer products.
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