Round Driving Light Assembly Long-Duration Overvoltage Report 20260718016
Test Request Information:
| Requesting Dept. | Quality Dept. |
| Reason | Sample Testing |
Sample Information:
| Sample Name | Round Driving Light Assembly |
| Sample Model | ********、 ******** |
| Sample Qty | 1 PCS |
| Sample Received | 2026.07.17 |
| Test Dates | 2026.07.18 |
Test Requirements:
| Test No. | Test Item | Reference Standard | Test Requirement |
|---|---|---|---|
| 1 | Long-Duration Overvoltage | Per ISO 16750-2:2023 Clause 4.3.1, including long-duration overvoltage test at Tmax-20°C and jump start (auxiliary start) test at room temperature. | The device or system does not perform one or more designed functions during the disturbance, but automatically returns to normal operation after the disturbance stops. |
Test Results: ， After test Function Appearance
Tested by: Test Engineer Reviewed by:
Approved by: Date: 2026.07.18
Test Samples:
| Sample No. | Sample Name | Sample Model | Sample Qty |
|---|---|---|---|
| 1 | Round Driving Light Assembly | ********、 ******** | 1 PCS |
| 2 | |||
Sample Photos Before Test:
Test Procedure: Long-Duration Overvoltage
1、 Test Equipment:
| Equipment Name | Equipment No. | Calibration Valid Until |
|---|---|---|
| DC regulated power supply KXN-6030D | BJ-QC02-0040 | 2027.03.22 |
| Forced-air drying oven | 0006-007-0070 | 2027.03.22 |
2、 Test Conditions:
Temperature: Tmax–20°C (if Tmax = 85°C, test at 65°C); room temperature = 25°C.
Voltage: 12 V system test voltage 18 V; jump start USmin = 10.8 V, Utrans = 26 V.
3、 Test Basis:
ISO16750-2:2023 in 4.3.1 ， Tmax-20℃
at （ ） 。
4、 Test Steps:
1. Set the chamber to Tmax – 20°C (if Tmax = 85°C, test at 65°C).
2. DUT in lit state (Mode 3.4, operating at maximum supply voltage).
3. Ramp supply from nominal 13.5 V to 18 V; hold for 60 min.
4. Monitor throughout: confirm the LED recovers to normal lighting at 13.5 V; check driver thermal protection and smoke/odor; return to 13.5 V after 60 min.
5. Jump start: apply 26 V to all relevant DUT inputs (connection points) for 60 ±6 s per the curve below.
5、 Test Results: see table below
| Sample No. | Test Item | Test Requirement | Test Result |
|---|---|---|---|
| 1 | Long-Duration Overvoltage | The device or system does not perform one or more designed functions during the disturbance, but automatically returns to normal operation after the disturbance stops. | ， After test Function Appearance |
6、 Test Sample Photos:
Before test · During test
During test · Test temperature
After test · After test
After test
*** End of Report ***
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