Cable joint operation state monitoring device

The invention relates to the technical field of electric power supply, in particular to a cable connector operation state monitoring device. During use, since the phase difference among the three cables of the three-phase cable is 120 degrees, the three-phase phase difference is detected by the phase difference detection mechanism, and whether the insulativity of the joint of the three-phase cable is normal can be known by comparing whether the three-phase phase difference accords with 120 degrees. And when the insulativity becomes poor, a worker can know that the insulativity becomes poor through the upper server, so that timely maintenance can be realized. The environment condition of the joint of the three-phase cable can be known through the environment data, and when the environment condition is relatively bad, a worker can timely know the environment condition through the upper server so as to take corresponding measures. 本申请涉及电力供电技术领域，具体涉及电缆接头运行状态监测装置。本方面在使用时，由于三相电缆的三条电缆相互之间的相位差为120°，通过相位差检测机构检测得到三相相位差