Ground Testing Standards for DC Cooling Fans
Category:
Industry Trends
Release time:
2020-04-18
Direct current Cooling fan The landing test standard
Due to the unique characteristics of DC cooling fans, the industry standard is as follows: For cooling fans with an external frame, depending on the size of the fan, when placed individually on a 30-100 cm-high stand and allowed to freely fall onto a 1 cm-thick wooden board from all six sides, the fan may sustain some damage—but as long as it can still operate normally and its electrical performance meets the required specifications, it is considered qualified.
It seems that the standards for this product aren't particularly high, mainly because the internal structure of the cooling fan is tightly fitted. For example, the bearings and the central tube, the stator and the central tube, as well as the motor housing and the fan blades—all these components are designed with tight fits rather than being integrally molded.
When the height exceeds the standard and the device lands, the structural dimensions change upon impact, which can cause the cooling fan to make unusual noises or even jam and stop rotating.
When the height exceeds the standard, for commonly used frame blades, the plastic material typically used is PBT. However, with the central tube, ribs, and fan blades made of this material, they tend to break easily, potentially causing the cooling fan to fail to operate. For fans equipped with dual-ball bearings, switching to PC material can meet higher standards for drop resistance.
Shenzhen Jiangshanlai Electronic Technology Co., Ltd. is a large-scale enterprise integrating the R&D, manufacturing, sales, and service of brushless DC motors, DC cooling fans, DC brushless fans, DC stand fans, boosted cooling fans, micro cooling fans, DC cooling fans, DC blowers, and non-standard custom fans. We are a manufacturer and wholesale supplier of DC fans. Our products are best-selling in Guangdong, Shenzhen, Guangzhou, Dongguan, Fujian, Zhejiang, Jiangsu, and other regions.
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