ALSTOM 029.148.924 Advanced Numerical Motor Protection Relay

Product Brief Description

ALSTOM 029.148.924 is an enhanced MiCOM series numerical motor protection relay for critical medium-voltage motors. It provides comprehensive electrical protection, thermal monitoring, vibration measurement and control functions for large industrial motors. Equipped with abundant RTD and analog input channels, this relay monitors motor winding and bearing temperature as well as vibration status, preventing motor damage caused by overload, locked rotor, phase imbalance and earth faults. We supply fully inspected surplus and refurbished units for power system maintenance and emergency spare replacement.

Product Features

• Complete motor protection suite: thermal overload, locked rotor protection, negative sequence overcurrent, stator earth fault and sensitive earth fault protection
• Up to 16 RTD inputs for multi-point temperature monitoring of stator windings and bearings; supports 4-20mA vibration sensor analog inputs
• Undercurrent protection, loss-of-load detection, over-power protection and repeated start inhibition to avoid frequent motor startup damage
• Dual Ethernet communication ports, supporting IEC 61850, Modbus TCP and DNP3 protocols for SCADA system connection
• High-resolution disturbance recorder and event logger, recording fault waveforms and operation events for post-fault analysis
• Front LCD and keypad for local parameter configuration, real-time status display and fault history query; complies with IEC 60255 standards
• Refurbished relays pass protection logic test, analog injection calibration, RTD channel verification and full functional inspection before shipment

Application Scenarios

• Critical medium voltage motor protection for petrochemical, mining and water treatment industries
• Fan, pump and compressor motor protection in thermal power plant auxiliary systems
• Cement, metal smelting and pulp & paper production line drive motor monitoring & protection
• Motor control centers and substation automation systems with temperature and vibration monitoring requirements
• Preventive maintenance, relay replacement and spare parts inventory backup for industrial power facilities

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