This standard specifies the test requirements and test methods for three-phase induction motors.
This standard is applicable to three-phase induction motors.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 755-2008 Rotating Electrical Machines-Rating and Performance
GB 10068-2008 Mechanical Vibration of Certain Machines with Shaft Heights 56mm and Higher - Measurement Evaluation and Limits of Vibration Severity
GB/T 10069.1-2006 Measurement of Airborne Noise Emitted by Rotating Electrical Machines and the Noise Limits - Part 1: Method for the Measurement of Airborne Noise Emitted by Rotating Electrical Machines
GB/T 21211-2007 Rotating Electrical Machines - Equivalent Loading and Super-position Techniques - Indirect Testing to Determine Temperature Rise
GB/T 22715-2008 Impulse Voltage Withstand Levels of Form-wound Stator Coils for Rotating a.c. Machines
GB/T 22719.1-2008 Interturn Insulation of Random-wound Winding for AC Low-voltage Electrical Machines - Part 1: Test Methods
GB/T 22719.2-2008 Interturn Insulation of Random-wound Winding for AC Low-voltage Electrical Machines - Part 2: Test Limits
JB/T 7836.1-2005 Electric Heater for Electrical Machine - Part 1: General Technique Specifications
JB/T 10500.1-2005 Embedded Thermometer Resistance for Electrical Machines - Part1: General Specification, Measuring Methods and Examine Rule
IEC 60034-2-1:2007 Methods for Determining Losses and Efficiency of Rotating Electrical Machinery from Tests (Excluding Machines for Traction Vehicles)
3 Main Symbols
cosφ——the power factor
f——the supply frequency, Hz
I1——the stator line current, A
I0——the no-load line current, A
IK——the locked-rotor line current, A
IN——the rated current, A
K1——the reciprocal of the resistance temperature coefficient for conductor material of stator winding at 0℃
For copper, K1=235;
For aluminum, K1=225, unless otherwise specified;
If other materials are used, K1 will be separately specified.
K2——the reciprocal of the resistance temperature coefficient for conductor material of rotor winding at 0℃
For copper, K2=235;
For aluminium, K2=225, unless otherwise specified;
If other materials are used, K2 will be separately specified.
J——the moment of inertia, kg?m2
n——the rotational speed measured during test, r/min
