PC-9520J(G)/JZ(G) integrated power monitor is a microcomputer, Advanced digital three-phase power monitoring instrument, it focus the function of instrumentation, control and RTU in a a simple and economical equipment, it can replace General Instrument, RTU and transmitter to comprehensive testing and control tasks, and include the function of telecommunications and multi-machine network. The main function is measuring and storing a variety of electrical data in distribution transformers running. It can be stored for 70 days.