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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.

Feature Details
Manufacturer GE Grid Solutions (GE Multilin)
Model Number M60
Series UR Series Universal Relays
Product Type Motor Protection & Control System
Protection Elements Thermal Model (49), Stator Differential (87M), Broken Rotor Bar, Undercurrent (37)
Monitoring Phase Unbalance (46), Ground Fault (50G/51G), Jam/Locked Rotor (48)
Voltage/Freq Under/Over Voltage (27/59), Under/Over Frequency (81U/O)
Thermal Inputs Supports internal RTD modules or external RRTD modules
Logic Engine FlexLogic™ programmable logic (up to 1024 lines)
Communication IEC 61850, Modbus TCP/RTU, DNP3, EGD, Ethernet Global Data
Synchrophasor Embedded PMU per IEEE C37.118
Recording 64-sample/cycle oscillography; 1024 sequence-of-events records
Operating Temp –40°C to +85°C
Mounting Standard 19-inch 6U UR Chassis

 

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