news information
How should outdoor charging stations undergo dustproof testing? How do you choose between IP5X and IP6X sand and dust test chambers?
2026-10-09
Charging stations are installed along roadsides, in industrial parks, and at the exits of underground garages—exposure to dust in summer and sandstorms in winter is commonplace. Last year, while reviewing after-sales data for a customer that manufactures DC fast chargers, we found that after six months on the market, several units had increased insertion/extraction forces on their charging connectors. Upon disassembling the connector housing, we discovered a layer of fine sand accumulated inside. Checking the factory records revealed that although the sand‑dust test chamber had run for the prescribed duration, the test samples were equipped with heat‑dissipation breather valves, but no negative pressure was applied. As a result, dust never truly entered the chamber, meaning the test was not conducted thoroughly.
So what exactly does a sand and dust test chamber measure? It doesn’t verify whether the enclosure will crack if dropped; rather, it assesses whether fine dust can penetrate along gaps into live parts, causing poor contact, sticking, or reduced insulation. During testing, dry talc powder or test dust of specified particle size is typically used. The dust concentration inside the chamber must remain stable, and the dusting method, number of cycles, and sample orientation must all correspond to the product’s declared protection rating. GB/T 4208-2017 clearly outlines the criteria for IP5X and IP6X—don’t just focus on the three words “dust‑tight.”
When testing with a sand and dust test chamber, several pitfalls are common. First is the negative pressure test: if the sample has ventilation holes or a breather valve, failing to apply negative pressure makes it difficult for dust to enter by gravity alone, leading to overly optimistic results. Second is the inspection point: you can’t just examine the exterior; you must open areas such as the gun‑head mount, charging module compartment, communication interface, and door lock to assess dust accumulation. Third is particle size: reporting only “dust” without specifying the particle size prevents cross‑lab data comparison.
Configuration Sand and Dust Test Chamber At that point, it’s advisable to first clarify three key questions: whether the target protection rating is IP5X or IP6X, whether the sample includes a breather valve, and whether there are plans to extend compliance to military standards or vehicle manufacturers’ specific operating conditions. Adjustable dust particle size ranges, recovery methods, and whether the interior walls of the chamber are easy to clean have a greater impact on daily use than simply looking at the chamber volume.
Finally, one more practical detail: before testing, the sample must be allowed to equilibrate at room temperature and humidity for a sufficient period; after testing, do not open the package immediately—wait for the dust to settle before removing the sample. Otherwise, when disassembling it, a gust of wind could blow surface dust into the interior, rendering all previous work futile. If recurring issues are reported on-site, re‑process the defective unit… Sand and Dust Test Chamber Running a comparative test often helps determine whether the issue lies with the seal batch or with assembly tolerances.
More Information
National Consulting Hotline:
E-Mail:yxipx@yxipx.com
Guangzhou Headquarter Address: 101, No.3, General Son, Pangxi Village, Dalong Street Office, Panyu District, Guangzhou
East China Office Address: No. 141, Lane 900, Lu Xiang District, Xinfeng North Road, Huaxin Town, Qingpu District, Shanghai
WeChat Public
WeChat Service
© 2023 Guangzhou Yuexin Testing Equipment Co., Ltd All rights reserved. SEO Website: WWW.300.CN business license
Tel：400-997-0881
No.3 Jiangjunzi, Jiangxi Village, Dalong Street Office, Shiqi Town, Panyu District, Guangzhou City
E-mail：yxipx@yxipx.com
We will provide you with timely feedback