K8 Series Monitoring Relays Manual

This document details the K8 series of monitoring relays, which provide global protection for three-phase equipment by detecting conditions such as phase-loss, overvoltage, undervoltage, and voltage asymmetry. The series features a superior switching power supply design that eliminates internal heat generation from inverter noise, and includes models like the K8AK-PM and K8DS-PM for comprehensive three-phase power supply monitoring.