Current transformer live checking system, self-calibration method and use method

The invention relates to the technical field of mutual inductor detection, and discloses a current transformer live checking system, a self-calibration method and a use method.The current transformer live checking system comprises a checking instrument, an integrated current rising unit and a pincerlike standard mutual inductor CT0, and the checking instrument is electrically connected with the integrated current rising unit and the pincerlike standard mutual inductor separately; the checking instrument comprises a power supply unit, an acquisition unit, a man-machine interaction unit, a control processing unit, a wiring panel and a shell, the power supply unit is respectively connected with the acquisition unit, the man-machine interaction unit and the control processing unit and provides electric energy supply, and the man-machine interaction unit and the control processing unit are connected with each other and communicate with each other. The method has the beneficial effects that the current transformer