The weather resistance of electrical Ready Board Box for rural lighting distribution in Africa should be in accordance with ISO 4892-3 (UV)+IEC 60068-2-14 (temperature cycling), and combined with the harsh level of tropical outdoor environments. The core requirements are: no cracking, no obvious discoloration, and no powdering after 500-1000 hours of UV aging and at least 10 cycles of high and low temperature.

The following experiments need to be conducted:

1、 UV aging test (simulating strong sunlight in Africa)

Execution standards: ISO 4892-3, GB/T 16422.3

Light source: UVA-340, irradiance 0.89 W/m ² @ 340nm

Temperature and humidity:  60 ℃/4h (illumination)+50 ℃/4h (condensation)  cycle

Duration: ≥ 1000h (tropical outdoor high radiation)

Judgment: No cracks, no powdering, discoloration ≤ Gray Scale level 3 (Δ E ≤ 5)

2、 High and low temperature cycling test (large temperature difference between day and night)

Execution standard: IEC 60068-2-14

Temperature range: -30 ℃ (2h) → room temperature (1h) →+70 ℃ (2h) → room temperature (1h) for 1 cycle

Cycle times: ≥ 10 times

Judgment: No cracking, no deformation, no embrittlement, no abnormal appearance

3、 Materials and Acceptance Bottom Line

Recommended material: Modified PC/ABS, UV resistant and thermally stable, suitable for tropical use

Comprehensive acceptance: After two tests, if there is no cracking, no obvious discoloration, the structure is intact, and the insulation performance meets the standard, it can be used for outdoor lighting distribution scenarios in rural Africa.