Baldor Electric Company: Permanent Magnet (PM) product line increases power density and synchronous (non-slip) speed performance
Baldor’s RPM AC permanent magnet (PM) product line, which performs like a high horsepower servo motor with low rotor inertia and high power density, has been expanded to include a finned laminated 440 frame (FL440) that extends the product line’s horsepower range to 800 HP enclosed blower cooled and 1200 HP using open force ventilated construction.
By Gretchen Edelbrock, Products Editor
Now available in the NEMA frame sizes 180, 210, 250, 280 and 440 with permanent magnet rotor construction. The addition of the 440 frame size to the product family significantly increases the product horsepower range with synchronous speed performance. RPM AC PM motors are currently stocked as totally enclosed blower cooled TEBC ratings up to 150 HP with resolve feedback. PM rotor technology offers improved efficiency that can translate into increased power density and synchronous (non-slip) speed performance.
The RPM AC PM product line is currently available in both NEMA and IEC (112, 132, 160, 180 and 280) frame sizes. These motors are all designed to provide continuous constant torque performance from zero speed up to base speed for use with closed loop PM AC drives.