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This Q&A includes many of the questions we have been asked, with answers from UL experts. Registered users may also submit additional questions related to the 62368: UL has the answer.
Q&A: List of articles with PS
More specifically you asked: What PS class is a USB powered product that has no other I/O connections, has no internal battery nor internal amplifying circuitry?…
When are POE and USB ports required to be marked with the output voltage and the output current according to CSA / UL 62368-1 F.3.3.9DV.1? For POE, can we mark "POE" or "POE+" etc. to replace voltage and current?
With regards to Clause 6.2.2 of IEC 62368-1:2018 (3rd edition), what is the failure criteria of PS1 under abnormal and single fault conditions on load and power source circuits?
For DC powered products with internal PS2 circuits and containing only resistive PIS, does this construction require a Fire Enclosure?
I calculated the clearances according to 188.8.131.52 and got the highest value according to Procedure 1. Now I want to find the test voltage from Table 16. Can I use 184.108.40.206.2.5 for decreasing the required withstand voltage to get lower test voltage?
I calculated the clearances according to 220.127.116.11 and got the highest value according to Procedure 1. Now I want to find the test voltage from Table 16. Can I…