The new SN series of three-phase induction motors is specifically designed for high-performance variable-speed applications and use on vector-control inverters.The main characteristic of the series is to use the same frame size of the DC motors of equivalent performance.The modular design structure allows various types of degrees of protection and cooling methods.The motors are force-ventilated so that they can operate at constant torque up to very low speeds.

The electromagnetic design is tailored for the inverter supply and the application requirements.

The new series covers a wide power range - from 90 kW to 700 kW (at 1500 rpm) - distributed over five frame sizes (200,225,250,280 and 315) and available in several core lengths. In the standard version,the motors are built in the 4-pole configuration.

The insulating system thermal class is H; the electrical performance complies with a class F temperature rise.