3. Protective devices

3.1 Protection against lightning strikes

The aim is to provide lightning data and practical procedures used by electricians for two very specific purposes:

• on the one hand, estimate the number of lightning strikes likely to be picked up by an overhead line ;

• secondly, position the ground wire of an overhead line in relation to the phase conductors, so that lightning strikes dangerous to the line insulation are picked up by the ground wire (or screen) and not by the phase...