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EN60950-1 definations

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dipnirvana

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en60950

Hello i am new to this safety standard.

please explain me what to do you mean by "single fault condition" , Also what is functional insulation.

And how do you explains TNV (what is the full form )
 

hakeen

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en60950-1

Simply said functional insulation is insulation type where some different parts of circuitry are seperated from each other. That is, components are insulated. However, an electrical shock is NOT prevented for e.g. an end-user.

You can find a good definition under
https://www.ce-mag.com/archive/01/Spring/Lamothe.html

Single fault condition means a condition in which one means for protection against hazard is defective. If a single fault condition results unavoidably in another single fault condition, the two failures are considered as one single fault condition.


Hope it helps.
 

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