Guidance on principles which can be used as the basis for determining the requirements for the connection
of distorting, fluctuating or unbalanced installations to MV, HV and EHV public power systems is
provided in the technical reports IEC/TR 61000-3-6, 61000-3-7 and 61000-3-13.
At post-connection stage, three major aspects referring to disturbance emission are regularly discussed
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debated:
a) the location of disturbances sources,
b) the discrimination between the network and the customer contribution to the emission level and
c) the evaluation or the assessment of the individual emission levels.
This report focuses mainly on the last aspect. Experience with the application of emission level
assessment guidelines in the context of post-connection investigations, in order to check if the actual
disturbance emission levels of a given installation comply with the limits established according to IEC/TR
61000-3-6, -3-7 and -3-13, are reviewed and documented.
However, the last two aspects are closely related and namely the second could be treated as a particular
case of the last.