China's automotive industry standards for automotive electrical equipment products dust test according to GB/T4942.1 and GB/T4942.2 IP2X, IP3X and IP5X related provisions of the requirements for testing and testing after the qualification.
IP2X means preventing the intrusion of medium-sized solids (diameter greater than 12mm); IP3X means preventing the intrusion of small solids (diameter greater than 2.5mm); IP5X means preventing the accumulation of harmful dust (the talcum powder having a diameter of less than 75μm is suspended at a concentration of 2kg/m3) 8 hours in the sand dust test chamber).
The ISO16750 series of standards provides environmental testing requirements for automotive electrical components in international standards. The requirements for dust testing in the 2003 edition are quoted from the relevant part of the German standard DIN40050-9. The requirements are equivalent to the relevant requirements of the ISO standard ISO20653. The dust test requirements for electrical equipment in road vehicles are mainly IP5KX and IP6KX.
IP5KX specific requirements Although the test sample can not completely prevent dust from entering, the amount of dust entering must not affect the normal operation of the sand dust test box, and must not affect safety; IP6KX requires no dust to enter the sample.
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