How to prevent high internal temperature caused by direct sunlight in rural lighting electrical ready boards in Africa?

Anti direct sunlight and high temperature solution for rural lighting electrical ready boards in Africa

African rural areas have strong sunlight and high ultraviolet radiation. Direct sunlight can cause heat storage in the box, and the temperature inside the lighting electrical ready board is significantly higher than the ambient temperature, accelerating the aging of circuit breakers and cable insulation. It is necessary to combine SANS and IEC 61439 standards, and use multiple methods such as shading, insulation, structural optimization, and installation specifications to control temperature rise.

Priority should be given to avoiding direct sunlight during the installation of lighting electrical ready boards. The boxes should be installed facing north as much as possible, using walls and trees to create natural shade; Independent sunshade and rainproof shelters must be installed at unobstructed points. An air gap should be reserved between the sunshade and the box to block heat conduction. The edge of the shelter should extend at least 300mm beyond the surrounding area of the box, taking into account both rain and ventilation. The outer shell of the lighting electrical ready board is coated with high reflectivity weather resistant spray paint such as light gray and beige, and UV stabilizer is added to reduce the absorption of solar radiation and avoid the dark shell absorbing heat.

The internal components of the lighting electrical ready board are arranged in a dispersed manner to avoid the concentration of heat sources; Select wide temperature products for electronic components, use them in high-temperature environments according to specifications, and reserve a temperature rise margin.

At the on-site operation and maintenance level, maintain a gap of at least 50mm between the back of the box and the wall to ensure air circulation at the back; Regularly clean the dust accumulation on the ventilation filter screen to prevent air duct blockage. It is not recommended to install fans universally, as rural maintenance conditions are limited and prone to malfunctions. The entire solution focuses on passive protection to reduce on-site operation and maintenance pressure, effectively suppress overheating caused by sunlight, and ensure long-term stable operation of lighting distribution.