Power Quality Monitoring System builds a comprehensive power quality monitoring network for data centers by deploying iMeter series Class A/S power quality meters at key nodes in data centers.Through PQMS, users can have the means to capture 20μs transient anomalies and analyze 120kHz ultra-high harmonics. Meanwhile, PQMS is equipped with CET's 3rd generation disturbance source localization algorithm, and combined with CET's iTrigger distributed recording solution, users can achieve high-precision disturbance source localization with an accuracy of over 90%. In addition, PQMS also provides users with a wealth of analysis tools, such as ITIC curves, SEMI F47 curves, EN 50160 reports, etc. It is a professional solution that can provide in-depth power quality management and efficient troubleshooting support for data centers.