JSY-MK-322TK three-phase mutual inductance power quality detector is a three-phase power quality detector with complete independent intellectual property rights developed by our company using microelectronic technology and special large-scale integrated circuit, digital sampling processing technology and SMT process and other advanced technologies. The technical performance of the detector fully conforms to the relevant technical requirements of IEC 62053-21 three-phase active watt-hour meter of class 0.5S. It can directly and accurately measure the electrical parameters such as voltage, current, power, power factor, quantity and total quantity in three-phase AC network with rated frequency of 50HZ or 60HZ. The detector has a built-in RS485 communication interface, and the MODBUS-RTU communication protocol is convenient to connect with various AMR systems. It has the characteristics of good reliability, small size, light weight, beautiful appearance and easy installation. JSY-MK-322TK three-phase mutual inductance power quality detector can be widely used in energy saving transformation, electric power, communication, railway, transportation, environmental protection, petrochemical, steel and other industries, used to monitor the current and power consumption of AC equipment.