SYSTEM AND METHOD OF DEMAGNETIZAION OF A CURRENT TRANSFORMER

摘要

PURPOSE: A system is provided to correct the ratio error and the phase error of a current transformer by confirming the demagnetizing state of the current transformer. CONSTITUTION: A current supplying device(10) supplies a current to a demagnetizing device(20). If a current transformer(50) is connected to the current supplying device, the demagnetizing device demagnetizes the flux of the current transformer by decreasing a current to 0A after reducing increasing a current more than 5A. A demagnetizing measuring device(30) measures the intensity of a current outputted from the demagnetizing device. A demagnetizing display device(40) displays a current outputted from the demagnetizing measure device.