Introduction：
YJ21
YJ21 motor is squirrel cage variable
frequency speed regulating saynchronous motor developed for AC-DC-AC electric
drive oil drilling machine. The motor takes international advanced insulation
processes and special measures protecting bars from breaking. Its centerline
height and installation dimension are the same as that of imported DC oil
drilling machine. The motor's main features are: large torque, wide range
constant power speed regulating, free maintenance, high universality, efficiency
and reliability. YJ21 motor can be used as slurry pump motor, rotary table motor
or winch motor of AC drive drilling machine.
Parameter：
Rated power: 800Kw
Rated voltage: 660V
Rated
current: 850A
Rated rotating speed: 800r/min
Rated frequency: 40.5Hz
Rated
power factor: 0.86
Rated efficiency: 95%
Rated torque: 9550N.m
Max.current: 1280A
Max.torque:
14320N.m
Max.con.power rotating speed: 1200r/min
Max.frequency: 61Hz
Insulation
class: 200
Cooling method: Forced air
Protection class: plus pressure explosion-proof
Mass: 3000Kg
