405 “Lightning Interception”, Conveners V.
Moreover recent study been worked out 4.
These papers have been already approved the members CIGRE Study Committee “System
Technical Performance” .Additional comments
In standardizing the LPS, CENELEC 81X (as IEC 81) has always disregarded the so-called
“active air-termination” because the international scientific community has always been distrustful
about such active elements, for which the claimed efficiencies have never been verified, confirmed
by even last IEC meeting Milano, April 2009 (81/326/RM, decision 3):
“TC aware development and research other technologies the field lightning protection,
but until these technologies are accepted the International Scientific Community (such CIGRE),
it considered opinion that the principles and methods within IEC 62305 are adopted” .
Note Copy document CLC/TC 81X(Secretariat)103/INF will circulated the
CLC/TC 81X members for information.
Cooray, Shindo), which are being submitted Electra for publication and will published shortly.
6
.”
See Annex letter received March 2010.
The main conclusion is:
“Concerning Early Streamer Emission Systems the paper concludes that the basic principle the
ESE devices, which based the experiments conducted with switching impulses high voltage
laboratory, does not work expected the field when the terminals are exposed the electric fields
generated down-coming stepped leaders and there justification present assume that the
ESE rods perform better than Franklin rods.
Indeed the so-called “active air-termination” have never been included IEC CENELEC standards
and LPS standardized 62305 (and IEC 62305) are based conventional technology which
disregards any supposed improved performance air-terminations due active elements (such as
ESE). conclusion, both these methods should not be
included any standard for lightning protection present.
The two papers are:
Paper Review Simulation Procedures Utilized Study The Attachment Lightning Flashes
To Grounded Structures
Paper Non Conventional Lightning Protection Systems
