Harmony Control Relay Application Guide

This document provides an application guide for Schneider Electric's Harmony Control Relay, detailing how it protects three-phase motors from common power quality issues such as phase loss, incorrect phase sequence, asymmetry, undervoltage, and overvoltage. It explains that these issues cause increased motor current, heat generation, and rapid motor damage, and positions the control relay as a solution for monitoring and detecting abnormal conditions to prevent costly failures.