ALSTOM IR139-1 Maintenance and Troubleshooting Guide

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Product Overview The ALSTOM IR139-1​is an electromechanical overcurrent protection relay designed for reliable circuit protection in electrical distribution systems.This robust protection device forms part of ALSTOM’s comprehensive protection relay portfolio,providing time-delayed overcurrent and earth fault protection for feeders,transformers,and motors.The IR139-1​combines proven electromechanical technology with durable construction to deliver dependable performance in utility and industrial electrical…