This Series comprises the high-speed series (EWD-N), applicable to the high-speed testing of auto-related equipment, and the ultra-high-speed series (EWD-R), applicable mainly to race car engines. This Series has the following features: (Three patents are being applied for.)

• High speed

  •	The shaft and disk have been combined in a common body. Its optimal shape was determined through the CAE system.
  •	An unbalanced distribution of magnetic flux has been eliminated to reduce the thrust force.



• Low inertia

  •	The high-speed rotor employs one to four rotor disks, thus reducing the rotor diameter.
  •	The rotor cooling characteristics have been improved to make the rotor compact.
  •	The rotor weight has been decreased to reduce the shaft load.



• Minimum possible measuring unit for horsepower

  •	By using an indirect cooling system, the minimum possible horsepower measuring unit has been further decreased.



• Range of constant torque

  •	A range of constant torque is located in the medium-speed region to achieves an easy-to-use absorption torque characteristic.