In this paper,a new self-integral Rogowski coil with magnetic core is designed,which has the advantages of high signal-to-noise ratio and wide dynamic range,for the measurement of nanosecond pulse current signal.It has shielding box open air gaps to prevent the eddy current.The outer layer of the shielding box is packaged with polyurethane encapsulation,and the polyurethane layer has a thickness greater than 1.5 mm,which can withstand more than 20 kV pulse voltage.The Rogowski coil is calibrated using a hig...