M-Series: A new range of high voltage, high efficiency TEFC cage induction motors. The range covers 125kW to 1500kW, 50Hz (200 to 1800kW, 60Hz) in frame sizes 355,400, 450 and 500 and supply voltages 3.3kV to 13.8kV, 50 or 60Hz. Available with standard designs for 2 to 8 pole, the M-Series in either horizontal or vertical mounting configurations with standard IP code of IP56.
The robust construction includes cast iron frames and endshields with form-wound stator coils and copper or copper alloy rotor cage providing a design life of 20 years.
Use of Laurence Scott & Electromotors NORFAST insulation system, providing high thermal conductivity combined with low loss shaft mounted external fan and a novel back of core internal air circuit delivering high effective cooling, prolonging in-service running hours.
Lead-time for machines has been reduced through a deliberate rationalisation of production methods and component procurement, while still retaining the flexibility to offer application-specific motors.