MECO Split Core Sensor's have a high secondary to primary turn ratio. These sensor's give a standard 5A AC or 1A AC output (any one only) which is suitable to conveniently measure on Single Three Phase Circuits with good stability and high anti-interference ability. It is ideal for power and energy measurement with high precision and small phase angle error in applications related to electric power, communication, monitoring and control. it can measure a variety of electric parameters without removing cables.