alternating spark-over voltage
analysis of the over-voltage of neutral point
Arc Grounding Over-Voltage
arc-extinguishing and over-voltage protection
Arcing Ground Over-voltage
atmospheric over-voltage
atmospheric over-voltage protection
back flashover over-voltage
Coarse change-over voltage
Coarse fine change-over voltage regulation
coincide brake over-voltage
commutating over voltage
De-excitation and Over-voltage Protection
de-excitation and over-voltage protection unit