Overview

This document provides detailed technical specifications, ratings, and dimensional data for electrical motor windings, specifically focusing on winding type 311 with a 0.8 power factor. It includes performance ratings under various duty cycles, temperature rises, and ambient temperatures, as well as mechanical dimensions and mounting details.

1. Electrical Ratings and Performance

• Winding Types: Winding 311 and Winding 05 and 06 variants are detailed.
• Power Factor: All windings are rated at 0.8 power factor.
• Voltage Ratings: Multiple voltage levels are supported, including 190V, 200V, 208V, 220V, 230V, 240V, 254V, 266V, 277V, 380V, 400V, 415V, 440V, 460V, 480V.
• Phase Configurations: Both 1-phase and 3-phase configurations are specified, with series star, parallel star, series delta, and double delta connections.
• Power Ratings: Continuous power ratings at 125k ambient temperature and 40°C temperature rise are provided in kW and kVA, ranging approximately from 3.8 kW to 20 kW depending on winding and configuration.

2. Mechanical Dimensions and Mounting

• Flange and Shaft Details: SAE flange sizes 3, 4, 5, 6, 6.5, 7.5, 8, and 10 are referenced with corresponding dimensions for flange thickness, bolt hole patterns, and shaft keyways.
• Dimensions: Key dimensions such as total length ("A"), center distance, and mounting hole circles (R, S, T) are specified in millimeters.
• Terminal Box and Covers: Terminal box top plate dimensions (400 mm), window plate (356 mm), and stator cover plate (254 mm) are noted.
• Coupling: Disc coupling thickness is 3 mm, with screw tightening torque specified at 7.6 kgfm (75 Nm).
• Weight and Size: Net weight (N.W.) and gross weight (G.W.) are provided along with overall dimensions (length x width x height) for different models, e.g., 515x485x620 mm and 565x485x620 mm.

3. Ratings and Environmental Conditions

• Duty Cycle: Continuous operation at 125k temperature rise and 40°C ambient temperature.
• Minimum Air Inlet: 8.5 units (likely mm or cm) specified for cooling air inlet.
• Temperature Rise and Ambient: Ratings are given for specific temperature rise and ambient conditions to ensure reliable operation.

4. Standards and Certifications

• Certifications: References to NEW ERA SLG and Intertek certifications indicate compliance with recognized quality and safety standards.

5. Summary of Key Parameters

6. Recommendations and Best Practices

• Ensure correct phase and connection type (series star, parallel star, delta) is selected based on application requirements.
• Verify voltage and power ratings against operational conditions to avoid overload.
• Maintain specified temperature rise and ambient conditions for optimal performance and longevity.
• Follow torque specifications for coupling screws to ensure mechanical integrity.
• Use appropriate flange and shaft dimensions for mounting compatibility.

Conclusion

This technical document serves as a comprehensive reference for selecting and installing winding 311 type motors with a 0.8 power factor. It covers electrical ratings, mechanical dimensions, environmental conditions, and certification standards to guide engineers and technicians in ensuring proper application and reliable operation.