GB/T 10485-2025 PDF English (GB/T 10485-2007: Older version)


Search result: GB/T 10485-2025 (GB/T 10485-2007 Older version)
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 10485-2025650 Add to Cart Auto, < 3 mins Road vehicles - Lighting and light-signalling devices - Environmental endurance Valid
GB/T 10485-2007319 Add to Cart 3 days Road vehicles -- Lighting and light-signalling devices -- Environmental endurance Valid
GB/T 10485-1989279 Add to Cart 3 days Basic environmental testing of lighting and signalling devices for motor vehicles and their trailers Obsolete

Similar standards: GB 11564   GB 5920   GB 11554   GB/T 24931   

GB/T10485-2025 (GBT10485-2025): PDF in English

GB/T 10485-2025 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.040.20 CCS T 38 Replacing GB/T 10485-2007 Road vehicles - Lighting and light-signalling devices - Environmental endurance ISSUED ON. JANUARY 24, 2025 IMPLEMENTED ON. AUGUST 01, 2025 Issued by. State Administration for Market Regulation; National Standardization Administration. Table of Contents Foreword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 5 4 Test requirements... 7 5 Thermal cycle test... 8 6 Sealing test... 11 7 Thermal shock test... 12 8 Thermal deformation test... 13 9 Salt spray test... 15 10 Dustproof test... 15 11 Accompanied vibration test... 17 12 Impact vibration test... 21 13 Waterproof test... 23 14 Test for resistance to lubricating oil, fuel, cleaning fluid... 25 15 Light source irradiation test... 26 16 Fog test... 27 17 Highly accelerated life test (HALT)... 30 18 Highly accelerated stress screening test (HASS)... 36 19 Focusing test... 38 Appendix A (Informative) Recommended sequence of environmental endurance test ... 43 Appendix B (Normative) Lighting mode of lighting and light signaling device... 44 References... 46 Road vehicles - Lighting and light-signalling devices - Environmental endurance 1 Scope This document specifies the test requirements for environmental endurance tests of road vehicle exterior lighting and light signaling devices (except retro-reflective devices), thermal cycle tests, sealing tests, thermal shock tests, thermal deformation tests, salt spray tests, dust tests, accompanied vibration tests, impact vibration tests, waterproof tests, lubricating oil resistance, fuel resistance and cleaning fluid resistance tests, light source irradiation tests, fog tests, highly accelerated life tests, highly accelerated stress screening tests, focusing tests, etc. This document is applicable to categories M, N, O, L road vehicle's exterior lighting and light signaling devices. 2 Normative references The contents of the following documents constitute essential clauses of this document through normative references in the text. Among them, for dated references, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document. GB 4599 Road illumination devices and systems for motor vehicles GB 4785 Prescription for installation of the external lighting and light-signalling devices for motor vehicles and their trailers GB/T 6495.9 Photovoltaic devices - Part 9.Solar simulator performance requirements GB/T 32466-2015 Accelerated stress testing procedures for electric and electronic products - Guidance for highly accelerated stress screen 3 Terms and definitions The terms and definitions defined in GB 4785, as well as the following terms and definitions, apply to this document. 3.1 This test is used to evaluate the temperature and humidity resistance of external lighting and light signaling devices. 5.2.2 Number of samples 2 lighting devices or 2 light signaling devices. 5.2.3 Test conditions The test shall be carried out in a temperature and humidity test chamber. 5.2.4 Test method 5.2.4.1 During the test, the sample is not lit. 5.2.4.2 According to 4.4 and Chapter 6, the sample is initially tested for changes in photometric values and sealing tests. 5.2.4.3 The sample is placed in the test chamber in a simulated normal installation position and tested according to the number of cycles required by 5.2.5. 5.2.4.4 Each test cycle is 720 minutes, including the following processes (see Figure 2). - Heating process 1.The temperature rises from 23 °C to 80 °C; the relative humidity rises to 80% (for category L vehicle lamps, the temperature is allowed to rise from 23 °C to 60 °C, the relative humidity rises to 80%); the heating time is 60 minutes. - Damp heat process. Maintain the temperature at 80 °C (for category L vehicle lamps, the temperature is allowed to be maintained at 60 °C), the relative humidity is 80% for a duration of 240 min. - Cooling process. From 80 °C (for category L vehicle lamps, the temperature is allowed to be reduced from 60 °C and the relative humidity 80% to -40 °C); when the temperature drops to 20 °C, the relative humidity shall be 20% ~ 50%; when the temperature is below 10 °C, there is no requirement for humidity. The cooling time is 120 min. - Maintain low temperature. -40 °C, for a duration of 240 min. - Heating process 2.Heating to 23 °C; heating time is 60 min; when the temperature is greater than 10 °C, the relative humidity is controlled at 20% ~ 40%. For devices with front lighting function, 8 cycles of test shall be carried out according to the requirements of Figure 2; devices with only optical signal function shall be carried out according to the requirements of Figure 2. 5.2.4.5 According to 4.4 and Chapter 6, retest the sample for photometric value change and sealing test. except for the vents/ventilated membranes, etc., any vents/ventilated membranes, etc. can be retained; all other vents/ventilated membranes, etc. can be sealed. Apply 3 kPa air pressure through the retained ventilation structure, until the air pressure stabilizes; immerse the sample in water. Immersion depth. The entire sample is immersed in the horizontal plane; the sample is rotated to place the bonding, welding or each connection 50 mm below the horizontal plane in turn. Immersion time. 15 s (for each evaluation area). 6.4.2 If the sample is an open structure, that is, it is sealed with the vehicle body through a sealing gasket, it is necessary to use a special sealing test bracket simulating the vehicle body (the bracket needs to have a vent); seal the sample with the bracket; apply 3 kPa air pressure through the vent on the bracket; immerse the sample in water after the air pressure stabilizes. Immersion depth. The entire sample is immersed in the horizontal plane; the sample is rotated to place the bonding, welding or each connection 50 mm below the horizontal plane in turn. Immersion time. 15 s (for each evaluation area). 6.5 Result judgment During the test, visually inspect the sample at the bonding, welding, each connection; no bubbles shall be generated. 7 Thermal shock test 7.1 Applicability This test is applicable to lighting devices and light signaling devices installed below the lower edge of the door side window; it is used to evaluate their thermal shock resistance. 7.2 Number of samples 2 lighting devices or 2 light signaling devices. 7.3 Test conditions The test shall be carried out at room temperature. 7.4 Test method 7.4.1 Perform the initial test of the sealing test on the sample in accordance with Chapter 6. 7.4.2 At room temperature, the sample is lit at the maximum power working state (as specified by the manufacturer) under the test voltage for 30 minutes. For multi-lamp units, all functions that can work simultaneously shall be lit. 7.4.3 After the function is continuously lit, immediately immerse the entire outer surface of the light distribution lens including the bonding part of the light distribution lens in the prepared 4 °C ± 2 °C water for 5 minutes. If necessary, the connectors, ventilation, ventilation parts that may be flooded can be temporarily sealed. 7.4.4 Perform the retest of the sealing test on the sample in accordance with Chapter 6. 7.5 Result judgment After the test, visually inspect the light-transmitting parts of the sample; there shall be no cracks and bubbles. During the retest of the sealing test, visually inspect the sample at the bonding, welding, joints; there shall be no bubbles. 8 Thermal deformation test 8.1 Applicability This test is applicable to lighting devices and light signaling devices; it is used to evaluate the heat resistance of their plastic parts to the environment and their own light sources. 8.2 Number of samples 2 lighting devices or 2 light signaling devices. 8.3 Test conditions 8.3.1 The sample shall be initially and retested for the sealing test before and after the test. 8.3.2 The test is carried out in a temperature test chamber; the airflow in the chamber shall be 0.5 m/s ~ 2 m/s. Temperature conversion rate. 1.0 °C/min ~ 4.0 °C/min. 8.3.3 The sample is placed in the test chamber in a simulated normal working position and is placed in the middle of the chamber as far as possible. The reference axis should be parallel to and face the main direction of the circulating airflow. The distance between the sample and the chamber wall shall be greater than 100 mm. 8.3.4 The temperature in the sample chamber is set according to the function and installation position of the lamp, which shall meet the requirements of Table 1. 9 Salt spray test 9.1 Applicability This test is applicable to external lighting devices and light signaling devices, to evaluate their resistance to salt spray corrosion. 9.2 Number of samples 2 lighting or 2 light signaling devices. 9.3 Test conditions 9.3.1 Protect the samples to simulate the actual installation conditions and place them in the test chamber, to ensure that the reference axis remains horizontal. 9.3.2 The mass concentration of the sodium chloride salt solution is 50 g/L ± 5 g/L; the pH (at 35 °C ± 2 °C) is 6.5 ~ 7.2. 9.3.3 The test chamber temperature is 35 °C ± 2 °C; the salt spray deposition rate is (1.5 mL ± 0.5 mL)/(80 cm2·h); continuous spraying is possible. 9.4 Test method 9.4.1 Place the samples in the test chamber to simulate the actual installation conditions. 9.4.2 Spray continuously for 23 h and stop spraying for 1 h in each cycle. The test shall end at the stop spraying stage. Devices with front lighting function shall undergo 10 cycles of testing. Devices with only light signaling function shall undergo 2 cycles of testing. 9.4.3 After the test, wash off the salt stains attached to.......
Source: https://www.ChineseStandard.net/PDF.aspx/GBT10485-2025