Phase rotation, also known as phase sequence, refers to the order in which the voltage waveforms of a three-phase electrical system reach their peak values. In a three-phase system, there are three separate voltage waveforms that are 120 degrees out of phase with each other. The order in which these waveforms reach their maximum values determines the phase rotation of the system.
Reactive power is the power that flows back and forth between the electrical system and reactive elements such as inductors and capacitors. It is measured in volt-amperes reactive (VAR). When the reactive power leads the voltage waveform, it is called leading reactive power, and when it lags the voltage waveform, it is called lagging reactive power.
Electricity is an integral part of our lives, and we rely on it for everything from lighting our homes to powering our devices. However, there are times when the voltage levels in the electrical system can fluctuate, which can have significant impacts on our equipment and appliances. Two such voltage fluctuations are swell and sag voltage, which we will explore in this blog.