The TOMZN TOMPD-8S 3 Phase Din Rail Adjustable Under/Over Voltage Protector Relay is an advanced microprocessor-based device designed to ensure stable and reliable power management in three-phase systems. Featuring a digital LCD display and keypad, it allows precise adjustment of overvoltage, undervoltage, and phase unbalance thresholds, as well as customizable delay and reset settings. With built-in protection functions such as phase loss, sequence reversal, and voltage asymmetry detection, it safeguards sensitive electrical equipment from power fluctuations.
In solar power systems, the TOMZN TOMPD-8S plays a crucial role by protecting inverters, solar pumps, and other three-phase solar-driven equipment from unstable grid conditions or generator output irregularities. By automatically detecting and isolating abnormal voltage levels, it ensures consistent performance, extends equipment lifespan, and maintains system efficiency, making it an essential safety component for both residential and commercial solar installations.