PML630 Load-Shedding Controller Manual

This document describes the PML630, a freely-configurable load-shedding controller from ABB's Relion 630 series, designed to protect industrial and utility power networks from blackouts and power outages. It details the device's integrated load-shedding and protection functions, including fast, slow, manual, and underfrequency modes, as well as its interoperability with IEC 61850 devices and role in a compact Power Management System (cPMS).