1. Motor Types and Options

The document covers three-phase squirrel cage induction motors from MGM Motori Elettrici S.p.A., including SMX (single speed), SMD, and SMDA (double speed) series. Frame sizes range from IEC 56 to IEC 315, with power ratings from 0.04 kW up to 132 kW. Pole configurations include 2, 4, 6, and 8 poles for SMX, and various combinations for SMD and SMDA. Optional features include thermoprotectors (PTO), thermistors (PTC), anti-condensation heaters, auxiliary ventilation (SMXAV), encoders (SMXE), special shaft and flange dimensions, and motors with NEMA dimensions.

2. Construction and Standards

Motors feature a Totally Enclosed Fan Cooled (TEFC) design with standard IP55 protection; IP56 is available on request. Insulation class F is standard, with class H optional. Aluminum frames are used up to IEC 132 size, while cast iron frames and flanges start from IEC 160 and IEC 100 respectively. Certifications include cCSAus, EISA (CC051A), NRC, CCC, China Energy Label, and EAC marks, available upon request. The SMX series complies with EU Regulation 2019/1781 for IE2 and IE3 efficiency classes.

3. Power Range and Performance Data

Detailed tables provide motor specifications including power ratings, speeds, current at 400 V 50 Hz, nominal and starting torque, starting current ratios, efficiency classes, power factors, and efficiency at 100%, 75%, and 50% load. Data assumes continuous duty (S1), 50 Hz frequency, ambient temperature up to 40 °C, and altitude up to 1000 m. Efficiency classes follow EN 60034-30-1 for motors between 0.12 kW and 1000 kW; motors below 0.12 kW are outside EU regulation scope.

4. Dimensional and Mechanical Data

Mechanical dimensions are provided for frame sizes 56 to 225M, including shaft diameters, lengths, terminal box sizes, and cable gland specifications. Cable gland sizes vary by motor size (e.g., M20 for sizes 71 and 80, up to M50 for sizes 225 and 250). Special notes clarify dimensions for specific motor variants, such as 2-pole motors and BAX 200 series. Mounting types B3, B5, and B14 are referenced, with double terminal boxes available for larger frames. Side-positioned terminal boxes are available on request.

5. Notes, Recommendations, and Manufacturer Disclaimer

• Motors marked with * have reduced shaft and flange dimensions corresponding to frame size 90.
• Nameplates include data for both 50 Hz and 60 Hz operation except where noted.
• Data is indicative and subject to change due to continuous product improvements.
• For specific applications or precise requirements, consultation with MGM technical staff is recommended.

6. Certifications and Regulatory Compliance

Motors comply with multiple international certifications and energy efficiency regulations. IE2 and IE3 efficiency classes are confirmed for applicable motors under EU Regulation 2019/1781. Some motors fall outside this regulation scope, particularly those below 0.12 kW or specific 60 Hz IE3 models.

7. Summary of Critical Information

• Motor Types: SMX (single speed), SMD and SMDA (double speed).
• Power Range: 0.04 kW to 132 kW.
• Frame Sizes: IEC 56 to IEC 315.
• Efficiency: IE2 and IE3 classes compliant with EU 2019/1781 where applicable.
• Construction: TEFC, IP55 (IP56 optional), insulation class F (H optional), aluminum or cast iron frames.
• Options: Thermal protection, anti-condensation heaters, auxiliary ventilation, encoders, special shaft/flange dimensions, NEMA dimensions.
• Certifications: cCSAus, EISA, NRC, CCC, China Energy Label, EAC (on request).
• Operating Conditions: 400 V, 50 Hz, max 40 °C ambient, altitude ≤ 1000 m, continuous duty (S1).

8. Manufacturer Contact and Support

Global contact points are provided for MGM Motori Elettrici S.p.A. in India, Turkey, Italy, Canada, and the USA, including telephone, fax, web, and email for sales and technical support.

Interpretation of Performance Tables

The performance tables enable selection based on electrical and mechanical parameters such as power, speed, current, torque, starting characteristics, efficiency, and power factor. Weight data assists in mechanical design considerations.

Overall, the document serves as a comprehensive technical reference for selecting, specifying, and applying MGM three-phase squirrel cage induction motors with a focus on IE3 efficiency class and compliance with international standards.