CISPR TR 18-3:2017
[Current]
Radio interference characteristics of overhead power lines and high-voltage equipment - Part 3: Code of practice for minimizing the generation of radio noise
...TR 18-3:2017 IEC 2017 13
1) for an existing line, the 80 % level may be determined, with a high degree of confidence,
from the all-weather distribution curve obtained by measurements made over a period of
one year;
2) if the all-weather distri...
...4 of CISPR TR 18-1:__
19
it is seen that, on average, the
80 % level for a line is 10 dB greater than the 50 % level...
...For voltage gradients in between these values, both the conductors
and the insulators may contribute to the noise level of the proposed line...
