How are voltage surges/transients generated?
15% of the main causes of voltage surges originating outside the system are lightning strikes and grid switching at high-voltage (230kV, 115kV) and medium-voltage (35kV, 15kV, 7kV) substations. 85% of the main causes of voltage surges originating within the system are load switching, opening or closing electrical switches, motor noise, electromagnetic interference, and static electricity, […]
