Power System Frequency DefinitionPower system frequency is the rate of change of the phase angle of AC voltage or current, measured in hertz (Hz).Historical InfluenceThe choice of 50 Hz in India and 60 Hz in other regions is based on historical and economic factors, not technical reasons.Advantages of 60 HzA 60 Hz system has more power output and allows for smaller electrical devices but may need more cooling.Advantages of 50 HzA 50 Hz system can support longer transmission distances with lower