1 Scope
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
