This standard specifies the types, basic parameters and dimensions, technical requirements, inspection rules, and requirements for marking, packaging and warranty period of YEJ series (IP44) electromagnetic braking three-phase induction motor.
This standard is applicable to YEJ series (IP44) electromagnetic braking three-phase induction motor (frame size 80~225) (hereinafter referred to as "motor"), and all other series motors derived from YR series (IP44) wound-rotor three-phase induction motor may also refer.
Contents Foreword I 1 Scope 2 Normative References 3 Types, Basic Parameters and Dimensions 4 Technical Requirements 5 Inspection Rules 6 Marking, Packaging and Warranty Period Appendix A (Normative) Special Test of Electromagnetic Brake Motor A.1 Determination of Braking Time A.2 Determination of Static Braking Torque A.3 Determination of Excitation Current and Excitation Power A.4 Determination of Electromagnetic Braking Performance at 85% of Rated Voltage Table 1 Construction and Mounting Types of Motor Table 2 Corresponding Relation between Frame Size and Rotating Speed & Power Table 3 Motor with Foot on Frame and No Flange on End Cover Table 4 Motor with Foot on Frame and Flange (with Through-hole) on End Cover Table 5 Motor with No Foot on Frame and Flange (with Through-hole) on End Cover Table 6 Flatness Tolerance and Parallelism Tolerance Table 7 Dimensions and Tolerances of Key Table 8 Symmetry Tolerance of Key Groove Table 9 Radial Circular Runout Tolerance Table 10 Circular Runout Tolerance Table 11 Guarantee Values of Efficiency and Power Factor Table 12 Guarantee Ratio of Locked-rotor Torque to Rated Torque Table 13 Guarantee Ratio of Minimum Torque to Rated Torque Table 14 Guarantee Ratio of Maximum Torque to Rated Torque Table 15 Guarantee Ratio of Locked-rotor Current to Rated Current Table 16 Maximum Operating Air Gap Table 17 Static Braking Torque, No-load Braking Time and Excitation Power of Magnetic Brake Table 18 Allowance of Guarantee Value of Electrical Performance Table 19 Vibration Strength Limits (Root-mean-square Values) for Different Shaft Center Heights Expressed with Displacement, Speed and Acceleration Table 20 Noise Values of A-weighted Sound Power Level Measured Under No Load Table 21 Noise Increment Values of A-weighted Sound Power Level Measured Under Load Table 22 Marks at Outlet Terminal Figure A.1 Circuit for Determining Brake Time Figure A.2 Schematic Diagram for Testing Static Braking Time
