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Table 41.1 Assumed Touch Voltage

Former Community Member
Former Community Member
I am a bit confused by this. Why do the disconnection times in Table 41.1 appear to be based on a touch voltage of 100 volts rather than a touch voltage of 125 volts?


For example, 110% of 230=  253 volts. Assuming L and PE are of the same size and material, indirect contact touch voltage is 126.5 volts. Would 0.33 seconds not appear more realistic?  


From IEC 61200-413


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  • mapj1:

    come on, roll one 6 on the dice, 1 in six chance, throw 2 dice,  36 possible outcomes, of which double  occurs once - its got to be a product...


    Mike.


    The related one to think about is to throw one coin, and you cannot say anything about heads or tails, but if you throw a bucket of identical coins, the odds of anything more than a few percent off from having half of each, is very unlikely, you just do  not know which ones..


    So how many sides does a possibly faulty R.C.D. have then Mike?


    Z.


Reply
  • mapj1:

    come on, roll one 6 on the dice, 1 in six chance, throw 2 dice,  36 possible outcomes, of which double  occurs once - its got to be a product...


    Mike.


    The related one to think about is to throw one coin, and you cannot say anything about heads or tails, but if you throw a bucket of identical coins, the odds of anything more than a few percent off from having half of each, is very unlikely, you just do  not know which ones..


    So how many sides does a possibly faulty R.C.D. have then Mike?


    Z.


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