Protection of Communication Cables in Plastic Sheaths from Lightning Strikes,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
From impulse generator tests on a cable 4 km in length a one-quarter cable with polythene-insulated cores, an aluminum foil screen in the form of a two-layer winding of steel wires each 0.25 mm in diameter enclosed in P.V.C. cover outside diameter of cable of the order 15 mm, it was found that protection by earthing the cable screen along the line is generally less effective than protection by laying a lighting conductor of bimetal 0.25-0.35 m deep, although cost considerations and local conditions may influence the choice in particular cases.
- Electrical and Electronic Equipment