Secondary circuit detection system of current mutual inductor

The utility model provides a secondary circuit detection system of a current mutual inductor, and solves the problems of long time and low work efficiency at the time of checking whether secondary circuit wiring of the current mutual inductor is correct in the prior art. The secondary circuit detection system of the current mutual inductor comprises a once wire (1), the current mutual inductor and multimeters. The head end of an outflow wire (5) is connected with one end of a secondary winding (2) of the current mutual inductor, the tail end of the outflow wire (5) is connected with the head end of a return wire (11) through a connecting sheet (10) and a load (9) in sequence, the tail end of the return wire (11) is connected with the other end of the secondary winding (2) of the current mutual inductor, the head end of the outflow wire (5) is connected with the ground (4) through a short wiring (3), the tail end of the outflow wire (5) is connected with a test end (7) of a first multimeter (6), and the head end of the return wire (11) is connected with the test end (12) of a second multimeter (13). The secondary circuit detection system of the current mutual inductor is simple in structure and convenient to operate.