RELEASE DATE：2023-07-24 12:10
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.
OVERVIEW
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.
Name-en | LED substitute light sources | LED replacement light sources | LED retrofit |
Usage Scenarios | 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 |
Category | R.E.5, Annex 3, Group 4, Sheets for LED light sources | R.E.5, Annex 3, Group 5, Sheets for LED light sources | Not approved |
Type approval requirement | ECE R128 | ECE R37 | |
Example | LED | H11/LEDr |
EQUIVALENCE CRITERIA
Technical equivalence criteria of LED substitutes LED replacements to filament light sources：
Parameters, main changes | LED substitute | LED replacement | |
Photometry | 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 | ≈ | ≈ | |
Colorimetry | Colour of emitted light | = | = |
The spectral content | ≠ | ≠ | |
Geometry | Maximum lamp outline dimensions | = | = |
Cap/holder | = | = | |
holder | cap | ||
Functional interlock between light source and application | ≠ | ||
Electrical connector | = | = | |
Electrical | Test voltage | = | = |
Electrical power consumption | ≠ max | ≠ | |
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 | + | ||
voltage | |||
PWM operation to dim light sources | + | ||
Voltage polarity | + | ||
Failure detection | + | + | |
Failure behaviour | + | + | |
Thermal | Cap temperature | ≠ | |
Thermal behaviour | + | + run-up | |
Note：=，≈，≠，+are compared to filament light sources.
TYPE APPROVAL PROCEDURE
General procedure of ECE type approval of LED substitutes and replacements:
1.Documents preparation
2.Samples preparation and testing
3.Factory Audit
4.Submit documents
5.Issuance of certificate
Testing items:
1.Dimensional inspection
2.Aging treatment
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.
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REGULATORY SUBSCRIPTION PLEASE CONTACT
Alex
ATIC Project Manager, Alex is responsible for Europeran homologation of vehicle components. She is focusing on the one-stop compliance, testing and certification solutions for EV key components.
Phone: +86 020-82510156
Mail: cs@atic-cn.com
Mail: cs@atic-cn.com