Overall & Installation Dimensions

This section provides detailed dimensional data for various motor frame sizes, including parameters such as height (H), width (A, B, C, D, E, F, G), shaft diameter (K), mounting hole sizes (SS, XX, ZZ, AA, AD, HD, AC), and other installation-related measurements (L, YS, YW, YH). The data is tabulated for frame sizes ranging from 56 to 180M/L, with some frames having two housing sizes indicated by brackets. Key points include shaft diameters increasing with frame size and mounting hole specifications tailored to each frame.

Frame Foot Mounting and Shaft Dimensions

This section details the foot mounting and shaft dimensions for each frame size, including diameters (M, N, P, T, S, R) and thread sizes (e.g., M4, M5, M6, M8, M10, M12, M16, M20). It specifies the mounting hole counts and thread types for secure installation. Notably, larger frames have larger shaft diameters and mounting threads, with some frames requiring multiple mounting bolts.

MSD Series Three Phase Multi Speed Asynchronous Motors - Technical Data

This comprehensive section presents the electrical and mechanical performance data for the MSD series motors at 400V and 50Hz. The data is organized by pole pairs (2P, 4P, 6P, 8P, 12P) and motor models (e.g., MSD71A, MSD80B, MSD90S, MSD100LA, MSD132M, MSD160L, MSD180L).

Key Parameters Included:

• Power output (kW)
• Speed (r/min) at different pole configurations
• Efficiency (%)
• Power factor (CosΦ)
• Current (A)
• Rated torque (N·m)
• Starting torque to rated torque ratio (Tst/Tn)
• Starting current to rated current ratio (Ist/In)
• Maximum torque to rated torque ratio (Tmax/Tn)

The data shows that motor power and torque increase with frame size and pole number, while efficiency and power factor vary depending on speed and load. Starting current and torque ratios indicate motor starting performance and overload capacity. The tables also highlight multi-speed capabilities by showing performance at different pole counts, enabling flexible speed control.

Performance Trends and Recommendations:

• Higher pole counts correspond to lower speeds and generally higher torque outputs.
• Efficiency tends to improve with larger frame sizes and optimized pole configurations.
• Power factor values range typically from 0.6 to 0.9, indicating the need for power factor correction in some applications.
• Starting current and torque ratios suggest motors are designed for robust starting conditions, with typical starting current 1.5 to 3.5 times rated current.
• Mounting and shaft dimensions must be matched carefully to application requirements to ensure proper installation and mechanical compatibility.

Critical Notes

• Some frame sizes have two housing sizes with different rated outputs; users should refer to bracketed figures for increased output versions.
• All technical data is specified at standard voltage (400V) and frequency (50Hz), ensuring compatibility with common industrial power supplies.
• Proper selection of motor size, pole configuration, and mounting is essential for optimal performance and longevity.