1 Scope: This standard specifies the general requirements and test items for environmental durability testing of external lighting and light signaling devices of motor vehicles and trailers (thermal cycling test for headlights and front fog lamps, universal thermal cycling test, thermal shock test, thermal deformation test, salt spray test, dust prevention test, random vibration test, waterproof test, lens strength test, lubricating oil resistance, fuel and cleaning fluid resistance test, light source irradiation test) Equipment, samples, test conditions, test methods, and result determination. This standard applies to M, N, and О External lighting and light signaling devices (excluding reflex reflectors) for Class I motor vehicles and trailers 2 Normative References: The clauses in the following documents become the clauses of this standard through the reference surface of this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. Therefore, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB4599 Automotive Filament Bulbs Headlamps GB 466o Automotive Filament Bulbs Front Fog Lamps GB 4785 Installation Regulations for External Lighting and Light Signaling Devices of Automotive and Trailers GB 5920 Automotive and Trailer Front and Rear Position Lamps Clearance and brake light photometric performance GB 11554 Automotive and trailer rear fog light photometric performance GB 15235 Automotive and trailer reverse light photometric performance GB 17509 Automotive and trailer turn signal light photometric performance GB 18099 Automotive and trailer side marker light photometric performance GB18408 Automotive and trailer rear license plate lighting device photometric performance GB18409 Automotive parking light photometric performance GB 21259 Automotive gas discharge light source headlamp
3 Terms and definitions The above normative references The terms and definitions established in the document are applicable to this standard General requirement 4.1 Each test should use a new sample, and the same sample can also be used for different tests according to the needs of the test project. 4.2 For devices designed for both 12V and 24V systems, except for photometric performance, all tests should use devices with a nominal voltage of 24V for the light source. The light distribution performance should be inspected according to relevant standards
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China