The Multilin™ D25 Substation Controller is a powerful, modular solution that integrates multiple functions into one unit, revolutionizing substation automation. It replaces multiple standalone devices, reducing both wiring and maintenance costs. The D25 excels in power quality monitoring, measuring total harmonic distortion and other key metrics to ensure consistent power flow. With advanced fault management capabilities, it automatically transfers fault records for quick analysis, enhancing system reliability. The D25's versatile metering options and LogicLinx® automation tool further streamline operations, making it an indispensable tool for modern substations.