Re: [PSES] Hipot with in-circuit voltage limiting devices IEC 61010-1 3rd Ed.

2012-05-12 Thread Michael Maytum
Richard, To be clear, what problem and subject correctly are you referring to? The IEC 61010-1 3rd Ed problem is specifying a test voltage of 0.9xclamping voltage. From memory Edition 1 of IEC 62368-1 never specified a test voltage of this level. Yes IEC 62368-1 had a twice AC mains

Re: [PSES] Hipot with in-circuit voltage limiting devices IEC 61010-1 3rd Ed.

2012-05-12 Thread John Woodgate
In message 018DCF4B527741149F102EFC42E21D42@RichardHPdv6, dated Fri, 11 May 2012, Richard Nute ri...@bendbroadband.com writes: Would you like to check the latest draft of IEC 62368-1 to see if it treats the subject correctly? With respect to this problem, yes, IEC 62368-1 treats the

Re: [PSES] Hipot with in-circuit voltage limiting devices IEC 61010-1 3rd Ed.

2012-05-12 Thread Richard Nute
Hi Mick: The problem is the one originally described. The 2nd Edition of IEC 62368-1 is the result of an ad hoc group that studied the various varistor components to arrive at a set of requirements that would allow the varistor (and its derivations) to perform the intended clamping yet not

Re: [PSES] Hipot with in-circuit voltage limiting devices IEC 61010-1 3rd Ed.

2012-05-12 Thread Richard Nute
Hello John: With respect to this problem, yes, IEC 62368-1 treats the subject correctly. So it could be used as evidence to persuade TC66 to reconsider. Yes. The 2nd Edition of IEC 62368-1 refers to IEC 61051. TC66 should first identify the safety issue associated with varistors (fire)