S-OPR 45
ABB OPR 45 air terminal lightning protection
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Protection radius 63-89 m
(depending
on level selection in design) at a height of 5 m above the shielding structure
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Standard NF C 17-102
The OPR efficiency (ΔT) Lightning is one of the most spectacular meteorological phenomena.
Generated by the interaction of clouds elements (water and ice), it can kill,
injure and damage. The unique efficiency of the OPR Early streamer emission is
based on the difference (ΔT), measured in a laboratory, in between the emission time of the
OPR and the one from a simple rod. The OPR ESE air terminal is composed of a
striking point connected to a down conductor to conduct the lightning to the
ground.
Complete autonomy During a storm the ambient electric field may
rise from 600 V to 10-20 kV/m. When the electric field reach this level
representing a minimum risk for a lightning, the OPR begins to get activated
and generates high voltage pulses, helping to create and propagating an upward
leader. After a strike on the OPR, the lightning current is driven to ground by
the down conductor to the earth termination system.