JB/T 12222-2015Specification for YYSE2 series (IP55) three-phase induction motors for compressors (frame size 80 to 355) (English PDF)

National Standard of the People's Republic of China

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Contents

• 1 Scope
• 2 Normative references
• 3 Type, basic parameters and dimensions
• 4 Technical requirements
• 5 Inspection rules
• 6 Marking, packaging and warranty period
• Figure 1 Motors with feet on the frame and no flange on the end shield
• Figure 2 Motors with feet on the frame and a flange with through holes on the end shield
• Table 1 Correspondence between the frame number and the synchronous speed and rated power
• Table 2 Motors with feet on the frame and no flange on the end shield
• Table 3 Motors with feet on the frame and a flange with through holes on the end shield
• Table 4 Dimensions and tolerances of the shaft extension key
• Table 5 Radial run-out tolerances
• Table 6 Radial run-out and axial run-out tolerances
• Table 7 Parallelism tolerances
• Table 8 Flatness tolerances
• Table 9 Symmetry tolerances
• Table 10 Guaranteed values of efficiency and power factor
• Table 11 Guaranteed values of the ratio of locked rotor torque to rated torque
• Table 12 Guaranteed values of the ratio of minimum torque to rated torque
• Table 13 Guaranteed values of the ratio of maximum torque to rated torque
• Table 14 Guaranteed values of the ratio of locked rotor current to rated current
• Table 15 Tolerances on the guaranteed values of the electrical performance
• Table 16 Time interval after switching off
• Table 17 Limits of vibration severity expressed as displacement, velocity and acceleration for the different shaft heights H in millimetres (root mean square values)
• Table 18 Maximum A-weighted sound power level at no load
• Table 19 Maximum permissible increase of the A-weighted sound power level at rated load
• Table 20 Marking of the terminals