1 Scope
The test procedure specified in this standard is applicable to three-phase induction motors.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard.
Foreword I
1 Scope
2 Normative References
3 Main Symbols
4 Test Requirements
4.1 General
4.2 Test Power Supply
4.3 Measuring Instrument
4.4 Measurement Requirements
5 Test Preparation
5.1 Determination of Insulation Resistance
5.2 Determination of DC Terminal Resistance of Winding in Initial (Cold) State
5.3 Determination of Rotor Voltage
6 No-load Test
6.1 Determination of No-load Current and No-load Loss
6.2 Determination of Iron Loss PFe and Windage and Friction Loss PfW
7 Locked-rotor Test
7.1 Locked-rotor Test at Rated Frequency
7.2 Low-frequency Locked-rotor Test
8 Load Test
8.1 General
8.2 Rated Voltage Load Test
9 Determination of Losses
9.1 Stator Winding I2R Loss at Specified Temperature
9.2 Rotor Winding I2R Loss at Specified Temperature (also including Brush Electric Loss for Wound Rotor Motor)
9.3 Iron Loss PFe
9.4 Windage and Friction Loss Pfw
9.5 Load Stray Loss
9.6 Determination of Total Loss and Output Power
10 Determination of Efficiency
10.1 General
10.2 Efficiency Test Methods
10.3 A Method——Input-output Method
10.4 B Method or B1 Method——Loss Analysis Method for Measuring Input-output Power
10.5 C Method or C1 Method——Feedback Method
10.6 E Method or E1 Method——Loss Analysis and Electric Power Measurement
10.7 F Method or F1 Method——Equivalent Circuit Technique
10.8 G Method or G1 Method——Undervoltage Load Method
10.9 H Method——Circle Calculation Method
11 Thermal Test
11.1 Purpose
11.2 General Description
11.3 Temperature Measurement Methods
11.4 Temperature Reading
11.5 Determination of Cooling Medium Temperature during the Thermal Test
11.6 Temperature Determination of Motor Winding and Other Parts
11.7 Test Method
11.8 Temperature Rise
12 Determination of Maximum Torque
12.1 General Description
12.2 Dynamometer or Calibrated DC Motor Method
12.3 Torque Meter Method
12.4 Torque Speed Meter Method
12.5 Circle Calculation Method
12.6 Conversion of Maximum Torque
13 Determination of Minimum Torque
13.1 General
13.2 Dynamometer or Calibrated DC Motor Method
13.3 Torque Meter Method
13.4 Torque Cycloscope Method
13.5 Conversion of Minimum Torque
14 Other Tests
14.1 Overspeed Test
14.2 Determination of Noise
14.3 Determination of Vibration
14.4 Short-time Overtorque Test
14.5 Withstand Voltage Test
14.6 Determination of Moment of Inertia
14.7 Determination of Shaft Voltage
15 Calculation Format
15.1 A Format——A Method
15.2 B Format——B(B1) Method
15.3 C Format——C(C1) Method
15.4 E Format——E(E1) Method
15.5 F Format——F(F1) Method
Appendix A (Normative) Correction Method of Instrument and Meter Loss and Error
A.1 Correction of Bit Table Loss
A.2 Correction of Scale Error of a Meter
A.3 Correction of Transformer Ratio Error
A.4 Correction of Phase Angle Error of Transformer
Appendix B (Normative) Correction of Dynamometer Torque Reading
B.1 Correction Based on Data of Tested Motor in No-load Test
B.2 Correction of Dynamometer
B.3 Corrected Torque T
Appendix C (Informative) Linear Regression Analysis
C.1 General
C.2 Methods
Appendix D (Informative) Comparison Table for Test Methods to Determine the Loss and Efficiency
