With shaft and rotor made from a single piece of forged steel and high starting torque, the SM40 is suited for high-inertia applications including centrifugal compressors in air separation plants or the oil and gas industry, large fans in the steel industry or power plants, and high-power pumps and pulp mills.
The motors have a high starting torque and low starting current enabling users to achieve significant energy savings, which is particularly important in energy-intensive applications. The low starting current also minimises the impact of the motor on the power supply network and means starting aids such as starting chokes, autotransformers or variable speed drives become unnecessary.
Available in frame sizes from IEC 800 to IEC 1250, the motors are designed as horizontal synchronous motors with solid salient pole rotors for voltages up to 13.8kV at 50 or 60Hz. The motors can be used in explosion hazards areas with certification conforming to IEC and NEC/CEC for protection classes Ex nA or Ex pz/Ex px, as well as Class I Division 2.
