JB/T 5337.1-2015Specification of non-sparking three-phase asynchronous motors - Part 1-YW2 series non-sparking three-phase asynchronous motors(frame size 80 to 355) (English PDF)

National Standard of the People's Republic of China

Replacing

JB/T 5337-1991

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 Test methods
• 6 Inspection rules
• 7 Marking, packaging and warranty period
• Figure 1 Diagram of the motor dimensions (1)
• Figure 2 Diagram of the motor dimensions (2)
• Figure 3 Diagram of the motor dimensions (3)
• Figure 4 Diagram of the motor dimensions (4)
• Table 1 Structure and mounting codes
• Table 2 Correspondence between frame number, speed and power
• Table 3 Motors with feet on the frame and no flange on the end shield
• Table 4 Motors with feet on the frame and a flange with through holes on the end shield
• Table 5 Motors without feet on the frame and a flange with through holes on the end shield
• Table 6 Motors for vertical mounting, without feet on the frame, with a flange with through holes on the end shield and the shaft extension pointing downwards
• Table 7 Dimensions and tolerances of the shaft extension key
• Table 8 Radial run-out tolerances
• Table 9 Radial run-out and axial run-out tolerances
• Table 10 Parallelism tolerances
• Table 11 Flatness tolerances
• Table 12 Symmetry tolerances of the keyway
• Table 13 Guaranteed values of efficiency and power factor
• Table 14 Guaranteed values of the ratio of locked rotor torque to rated torque
• Table 15 Guaranteed values of the ratio of minimum torque to rated torque
• Table 16 Guaranteed values of the ratio of maximum torque to rated torque
• Table 17 Guaranteed values of the ratio of locked rotor current to rated current
• Table 18 Tolerances on the guaranteed values of the electrical performance
• Table 19 Time interval after switching off
• Table 20 Insulation resistance
• Table 21 Root mean square value of the test voltage of the stator winding
• Table 22 Peak value of the impulse test voltage of the stator winding
• Table 23 Insulation resistance
• Table 24 Limits of vibration severity expressed as displacement, velocity and acceleration for the different shaft heights H in millimetres (root mean square values)
• Table 25 Maximum A-weighted sound power level at no load, in decibels
• Table 26 Increment of the A-weighted sound power level on load, in decibels
• Table 27 Test items
• Table 28 Marking of the terminals