Good summary of how electricity works and the concept of reactive power, which is when the voltage and current are out of sink leading to the power factor. In single phase power is P=VI (voltage times current) but in three phase its (Square root 3)x VxI Cos(phase angle) which is the phase angle shift between current and voltage, on most UK motors that's 0.9.
Good summary of how electricity works and the concept of reactive power, which is when the voltage and current are out of sink leading to the power factor. In single phase power is P=VI (voltage times current) but in three phase its (Square root 3)x VxI Cos(phase angle) which is the phase angle shift between current and voltage, on most UK motors that's 0.9.