Superconducting current limiter secondary circuit current detection device and use method

The invention relates to the technical field of superconducting current limiter secondary circuit current detection, in particular to a superconducting current limiter secondary circuit current detection device and a use method, the superconducting current limiter secondary circuit current detection device comprises a shielding shell, and the top of the shielding shell is in threaded connection with a metal cover plate. Whether current exceeds a rated value or not is detected through the over-current protector, and a circuit is rapidly cut off when the current exceeds the rated value, so that dangers such as equipment damage and fire caused by overlarge current are prevented, and when the detection device detects the superconducting current limiter, whether secondary loop current of the superconducting current limiter exceeds a set threshold value or not is monitored; and when the current exceeds a threshold value, protection measures are taken in time, the superconducting current limiter is prevented from be