The common operating temperature range for outdoor LED display switching power supplies is -40℃ to 70℃ or -25℃ to 70℃. The core differences lie in their low-temperature start-up characteristics and component configuration.
1. Typical Operating Temperature Range Classification:
① -40℃ - 70℃ Solution: This type of power supply employs a high-stability circuit design with military-grade components. It has passed a 96-hour full-load aging test, achieving an annual failure rate of <1‰. Its high-temperature resistance stems from its potted heat dissipation structure, allowing continuous operation even under direct sunlight.
② -25℃ - +70℃ Solution: Unique intelligent preheating compensation technology supports cold starts at extreme low temperatures of -40℃. After 5 minutes of warm-up, it can reach a standard 40A load output. Its temperature compensation algorithm achieves ±0.5% voltage accuracy, ensuring stable display brightness in extremely cold regions.
2. Selection Reference Standards:
In ultra-low temperature regions such as the Arctic Circle (annual average temperature < -30℃), models with active thermal management systems should be preferred; in tropical regions, special attention should be paid to the power supply's IP65 waterproof and dustproof rating and the aluminum alloy casing for heat dissipation. When the ambient temperature difference exceeds 90℃, it is recommended to install a three-level temperature protection device to prevent the risk of condensation.
