YJ14 and YJ14A motor are squirrel cage variable frequency speed regulating saynchronous motors designed for the first AC-DC-AC e   and YJ14A motor YJ14 and YJ14A motor are squirrel cage variable frequency speed regulating saynchronous motors designed for the first AC-DC-AC electric drive oil-drilling machine in China. These two kinds of motors can drive the winch, rotary table, slurry pump and some other unit of oil drilling machine. Their installation dimension is as same as that of imported DC oil drilling motor. YJ14 and YJ14A motor have explosion-proof structure, and the heater, pressure switches and auxiliary switches are installed in them. Their main features are as follows: largetorque, wide range constant power speed regulating, free maintenance, high universality, efficiency and reliability.Facing from the driving end, the terminal out of YJ14 motor is on the left side, and from YJ14A motor is on the right side..... ParameterRated power 400KwRated voltage 500VRated current 582ARated rotating speed 660r/minRated frequency 33.4HzRated power factor 0.86Rated efficiency 92.3%Rated torque 5787N.mMax.current 873AMax.torque 8680N.mMax.con.power rotating speed 1060r/minMax.frequency 55HzInsulation class 200Protection class plus pressure explosion-proofCooling method forced air(with original fan motor installed)Mass 2200KgVariable Frequency Speed Regulating Asynchronous Motor,YJ14 and YJ14A motor.. 

YJ14A drill motor