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Get the hard facts to successful 62368 compliance from your UL experts
The IEC 62368-1 Knowledge Hub covers an exceptionally wide range of topics, which we believe can be helpful to manufacturers and distributors of A/V & ICT equipment.
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: You ask, we answer
What are the principles of Double Safeguard constructions as they relate to accessibility requirements to ES3 energy sources?
Are all repetitive signals, which exceed the limits of IEC 62368-1:2014 - Table 8, independent of frequency and wave form, considered ES3?
Does Functional Insulation always need to be evaluated per Annex B.4.4, including for Class III products?
Can the requirements for protection of wound components against mechanical stress in G.5.1.2 be waived if an Insulation System is used according UL 1446?
Should the cumulative effect of small parts be considered for the exemptions in sub-clause 6.3.1 of IEC 62368-1?
If an external power supply output to a product is power limited in accordance to 62368-1, could the product'™s polymeric enclosure be flame rated HB?
Power-limited is a undefined term in IEC 62368-1, although what probably is meant is that the power supply supplying the product has an output limit associated…
Is a local indoor FXS analogue telephone port on a router considered ES2, regardless of the working voltage or current?
Does every step-down switch mode power supply need to be subjected to Energy Source Classification?
If a product is supplied by USB only, what kind of PS class can be considered for that product?
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?…