The working temperature of components in rural lighting electrical Ready Board Box in Africa should meet a wide temperature range of -25 ℃ to+70 ℃, with a core standard of -5 ℃ to+40 ℃, suitable for tropical high temperatures, large day night temperature differences, and outdoor exposure environments.

1、 Standard benchmark range

According to the IEC 60947 standard, the upper limit of temperature for conventional indoor components is+40 ℃, with an average of ≤+35 ℃ over 24 hours and a lower limit of -5 ℃. The outdoor/semi outdoor working conditions in rural Africa need to be upgraded to a wide temperature type, with a temperature range of -25 ℃ to+70 ℃, to ensure stable operation under extreme high temperature (up to 55 ℃) and low temperature conditions.

2、 Temperature requirements for core components

Circuit breaker: operates from -25 ℃ to+70 ℃, with+40 ℃ as the reference. If the temperature exceeds the limit, the capacity needs to be reduced.

Leakage protector: Same as the circuit breaker, the tripping signal may be abnormal between -25 ℃ and+70 ℃, and below -15 ℃.

Wiring terminals/copper bars: Long term ≤+60 ℃, to avoid oxidation and poor contact.

· Insulation material/shell: withstand -25 ℃~+70 ℃, aging resistance and deformation resistance.

3、 Key points for environmental adaptation in Africa

1. High temperature tolerance: upper limit ≥+55 ℃, passed the tropical test of IEC 60068-2-30.

2. Low temperature tolerance: lower limit ≤ -25 ℃, suitable for low temperature at night/in dry season.

3. Capacity reduction rule: For every 1 ℃ increase above+40 ℃, the rated current decreases by 0.5% to 1%.

4. Protection upgrade: IP65 dustproof and waterproof, suitable for high humidity, dust, and rain environments.

4、 Selection and maintenance suggestions

Priority should be given to selecting components with a wide temperature range of -25 ℃ to+70 ℃, which comply with the IEC 60721-2-1 Class 8 humid and hot climate standard. Install with a heat dissipation gap to avoid exposure to sunlight and ensure a sealed environment; Regularly check the temperature rise to ensure it is ≤+60 ℃ to prevent malfunctions and fire risks.