The committee draft (CDV) 77A/687/CDV of IEC 61000-4-15 Ed.2 was recently approved.
The standard is likely to be published this year and adopted in the EC sometime in 2011 / 2012.
As far as the Voltech PM6000 power analyser is concerned, there are no changes to the flickermeter design in terms of its filtering and the statistical analysis of jresults.
Clarification has been added concerning the measurement of the 'd' parameters for IEC61000-3-3, essentially on the definition of 'steady state' which was not defined at all.
As has been the case since the first edition of the standard, Voltech's interpretation has been based on excellent engineering principles and we anticipate that no changes will be required to our power analyser algorithms.
Of course we reserve the right to test thoroughly on as many examples as possible once the standard is formally published, and we will revise our firmware if it is necessary.
The following is a 'not for publication' CDV note:
201 Whereas the measurement and statistical processing of sinusoidal and rectangular voltage
202 fluctuations are specified unambiguously in the existing edition, this cannot be said for some of
203 the directly measured parameters, such as dc, dt, and dmax. The lack of a proper specification for
204 what constitutes “steady state condition” – i.e. the basis for the directly measured “d parameters”
205 – is probably the most important lacking item.
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