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What kV can be used to test the surge immunity of the power port of an industrial AI edge gateway?

Time：2025-12-27 Views：510次

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The power port of the industrial AI edge gateway is designed according to IEC61000-4-5, with typical withstand voltages of ±2kV differential mode and ±4kV common mode. For stringent power ratings, it can withstand ±6kV. It employs a three-level protection architecture: the first level is a 20D391K varistor with a current capacity of 10kA; the second level is a CML4532A-101T series-wound common mode inductor; and the third level is a 5.0SMDJ33CA TVS clamping at 53.3V. A 3R090L-8X10 gas discharge tube is connected in parallel for coarse common mode protection. The prototype, tested by the National Relay Protection Center, passed a ±6kV 1.2/50μs surge without damage.

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