La norma CEI 81-10/2 al punto A4 dell'allegato A a proposito del calcolo del numero di fulmini che una linea elettrica può raccogliere per consentire them to be discharged under consideration may protect proposes to take account of its length Lc defined as follows: Lc is the length of the section of the service from the hotel to the first node (m). It can be taken a maximum value Lc = 1000 m.
Below we read "if the value of Lc is not known, we must assume Lc = 1000 m".
In a paper signed by the graduate students and Sgaramella Adriana Patano Sunday entitled "MV and LV distribution networks" with the guidance of teachers. prof. ing. Pasquale Pugliese and prof. ing. Marco Bronzini (University of Bari), reads as follows:
"The range, an indication, we have:
1) in the central areas of large urban areas up to 100 meters;
2) industrial-urban areas about 300 meters;
3) in the recently industrialized farming areas over 1000 meters. "
since protection is very expensive, I conclude that the rule is concerned about your health people and much less in their pockets. Do not you think?
suggest that regulators in the face of an inexpensive depth (length of test lines attributable to) implement the standard, for those who are not able to determine, not an easy task, the node "mysterious", suggesting length values \u200b\u200bto be taken more closely to reality without imposing as it is happening in the general indifference to the improper costs most citizens.
I wonder, but the technical standard should not protect citizens?!!?
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