| 摘要 |
PURPOSE:To realize continuation of turning operation in case of loss of an electric power supply by providing, through clutches, an air motor on the output shaft of an a.c. motor for driving a turbine rotor. CONSTITUTION:An air motor 5 is provided, through clutches 3, 4, on the output shaft 2 of a.c. motor 1 for driving a turbine rotor. this enables continuation of turning operation even if the a.c. motor 1 is stopped due to loss of an a.c. electric power supply. |
