What is the appropriate temperature for outdoor power supply discharge

The operating temperature specified for a power supply refers to the temperature of the environment around it, rather than the external ambient temperature of the equipment. Typically, the operating temperature range for power supplies is between 0°C and 40°C, with some products able to reach standards of 0°C to 50°C.

Wide temperature power supplies usually operate within a range of -40 to -20°C up to 70–80°C, exceeding the range of conventional power supplies and meeting the needs of most applications. Although wide temperature power supplies utilize internal components with superior heat resistance, these materials still have thermal and efficiency limits.

When the ambient temperature exceeds this range—such as during scorching summers or freezing winters—the power supply may fail to operate normally. To address such extreme environments, users are advised to opt for wide temperature (Wide Temperature) power supplies.

Power supplies need to be housed outdoors, where the extreme heat of the summer and the extreme cold of the winter will both be present. Power supplies heat themselves up at different rates and intensities, and environmental influences will impact how quickly a power supply is exposed to high temperatures.

Therefore, if the working environment temperature ranges between 50°C and 70°C and the load requirement is between 400W and 700W, customers are advised to select a higher wattage wide temperature power supply and strictly follow the derating curve guidelines.

Within -40°C to 50°C, the power supply can reliably deliver 700W of power. However, as the temperature rises to 50–70°C, the output power decreases gradually, dropping to 400W at 70°C. If the ambient temperature exceeds 70°C, the over-temperature protection function activates, halting output until the temperature returns to a safe range.