Over Voltage

•Overvoltage (in a system) : Any voltage between one phase conductor and earth or between phase conductors having a peak value exceeding the corresponding peak of the highest voltage for equipment

Reference: Definition from the International Electrotechnical Vocabulary (IEV 604-03-09); available on Electropedia

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An overvoltage is a voltage pulse or wave which is superimposed on the rated voltage of the

 network (see Fig. J1)

Fig. J1: Examples of overvoltage