IEC Standard Motors


Hyosung’s IEC standard motors comply strictly with the IEC standards and are available for the steel, power and marine industries.



Hyosung’s IEC standard motors feature excellent insulation systems and strict process controls and quality management that allow for a low vibration and noise structure design. Its double cage rotor structure and special varnish finishing, as well as international standards (e.g., IEC, NEMA, and IEEE), allow the motor to run perfectly under various load conditions including a condition with a wide moment of inertia.


  • Excellent insulation system (Hyosung class F Supact Insulation System)
  • Special cage rotor structure suitable for various load conditions (double cage, deep-slot cage type)
  • Low vibration and noise structure design (ANSYS & NASTRAN)
  • Optimum design through electromagnetic and flow analysis (C.F.X & FLUX 2D)



  • Pump, Fan, Compressor, Crane, Mill, Crusher
  • General and steel industries
  • Petrochemical and cement plants
  • Hydraulic & thermal power plants
  • Atomic power plant (Class-1E (Q-Class) & Non Class-1E Motor)
  • Ships

Scope of Production

  • Output
    maximum of 20,000kW
  • Voltage
    maximum of 13.2kV
  • Enclosure
    TEFC, TEAAC, TEAO, ODP, WPI, WPII, Water-Cooled or Pipe-Ventilated, and Explosion-Proof
  • Insulation class
    F-type, H-type
  • Voltage range
    3,300 ~ 13,800V
  • Frequency
    50Hz , 60Hz



As well as designing the next-generation technology, Hyosung is continuously developing its own technology based on the evolving equipment. We create an optimized design using a magnetic field analysis program which models factors such as magnetic flux distribution, torque-speed, and magnetic flux distribution in the air gap. In addition, the structure analysis is performed through ANSYS or NASTRAN which calculates effects from the structural arrangement, stress, and inertia.Through the optimal material, enclosure, bearing system, and accessories, motors can be operated with appropriate speed while meeting customer’s specifications