MT/T 249-2019 in English

This standard specifies the technical requirements, testing methods, and marking rules for a specific type of electric motor designed for use in coal mines. It covers the design and performance criteria for a dual-speed, three-phase asynchronous motor with explosion-proof features. The document outlines the necessary conditions for the motor's operation in hazardous environments, ensuring compliance with safety and efficiency standards. It also includes guidelines for installation, maintenance, and inspection procedures. The standard provides a framework for manufacturers and users to ensure the motor meets the required specifications for reliability and safety in mining applications.