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LIGHTNING EFFECTS ON COMMUNICATION SYSTEMS
POWER INTERFERENCE Under Abnormal Conditions
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alternating currents amperes aouanbas approximately areas Bell Canada Bell System body breakdown buried cable cable sheath cathodic cathodic protection CM CM coaxial communication components conductor corrosion coupling damage decay devices dielectric strength direct current discharge distance duration earth potential effects electric shock electrode engineering equivalent exposure factors fault current fibrillation field flashover frequency GROUND MAT grounding structure Hydro Quebec impulse induced voltage insulation interference ionization L/G faults lightning strokes magnetic storms magnitude maximum measurements metal microseconds miles obtained occur ohms ohms-metre Ontario Hydro open wire operation parameters percent phase potential gradients Pourbaix diagram power line power system produce protection protectors reactance Reference relays sequence impedance shield shock hazard skywires soil resistivity station stray current subtransmission surge current surge voltages telephone plant transmission typical ventricular fibrillation voltage class volts wave waveshape zero sequence