Basler Electric ES-47N Phase Balance Relay is a microprocessor-based protective relay designed for three-phase power systems. It provides protection against phase unbalance, phase loss, and phase reversal/phase sequence to safeguard motors, transformers, generators, and other three-phase equipment from damage caused by unequal phase conditions. As part of Basler’s ES Series, the ES-47N includes internal diagnostics that annunciate when relay function or accuracy is compromised, and for users needing undervoltage protection in the same family, the ES-47N/27 adds phase balance protection with undervoltage protection.
