M60 | GE Multilin 87M Stator Differential & Thermal Relay

GE Multilin M60 Universal Relay Motor Protection System

The M60 (Model: M60) is a flagship Motor Protection System within the GE Multilin UR (Universal Relay) family, specifically engineered for the comprehensive protection and control of medium to large-sized three-phase motors. As a high-performance Intelligent Electronic Device (IED), the M60 (Part Number: M60) integrates advanced electrical, mechanical, and thermal protection elements into a single modular chassis. It is designed to handle complex motor applications, including two-speed motors, reduced voltage starting, and high-inertia loads in heavy industries like mining, petrochemicals, and power generation.

At its core, the M60 (Model: M60) features a sophisticated thermal model that utilizes RTD inputs and current unbalance biasing to accurately track the motor's thermal state. This ensures maximum operational uptime while providing fail-safe protection against stator differential faults, broken rotor bars, and loss of excitation. With support for IEC 61850 and embedded synchrophasors, the M60 bridges the gap between traditional motor protection and modern digital substation automation, delivering the reliability (E-E-A-T) required for critical infrastructure.

Detailed Technical Specifications

The M60 (Model: M60) provides utility-grade sensing and high-speed logic for demanding industrial environments.