Answer / Sandeep Kumar Shukla

Power factor is an essential parameter in electricity systems because it affects the efficiency of power transmission and utilization. A high power factor indicates that there is minimal energy loss during transmission, while a low power factor results in increased losses and higher costs.nnTo maintain a good power factor, capacitors can be installed to compensate for reactive power (voltage lag) and minimize the phase angle difference between current and voltage. This process is known as power factor correction (PFC).nnIn an electrical system with an inductor (such as a motor), the current lags behind the voltage, causing a low power factor. By adding capacitors in parallel with the load, the current leads the voltage, cancelling out some of the reactive component and improving the overall power factor.nnHere's a simplified diagram showing power factor correction using capacitors: [Insert diagram here]

Recently we had experienced following problem All RCCB breakers (connected to the load as well as spares) connected to various UPS systems at various floors at a high rise building tripped during a power break down and upon starting up of generator.This Generator is recently inducted into the installation. Can any one explain the reason behind this tripping. Regards Viswanathan

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