... have such characteristics as high efficiency,low noise,slight vibration and reliable operation. Y-H series motor is sealing-in, ... type marine three-phase induction motor. The motors have such characteristics as high effciency, low noise, sight vibration, high locked-rotor torque and ... . The motor is able to operate on below conditions, such as dewdrops, salt-fog, mould, vibration and shock. Standard: JB ...