This standard specifies the test methods for various types of low-power synchronous motors. This standard applies to various types of low-power synchronous motors with a continuous rated power not exceeding 1.1kW when converted to 1500 r/min. 2 Normative References: The clauses in the following documents become the clauses of this standard through the reference surface of this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. Therefore, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB 7552008 Rotating Electrical Machines - Rating and Performance (IEC60034-1: 2004,1DT) GB/T 2421-1999 Environmental Testing for Electrical and Electronic Products - Part 1: General GB/T 2900.27-2008 Electrotechnical Terminology - Small Power Motors GB/T 4942.1-2006 Classification of Protection Degrees (IP Codes) for the Overall Structure of Rotating Electrical Machines (IEC 60034-5; 2000,1DT) GB/T 5171-2002 General Technical Conditions for Small Power Electric Motors GB/T 7676.2-1998 Direct Acting Analog Indicating Electrical Measuring Instruments and Their Accessories, Part 2: Special Requirements for Ammeters and Voltmeters (idt IEC 60051-2:1984) GB/T 10069.1-2006 Methods and Limits for Measuring Noise in Rotating Electrical Machines Part I: Methods for Measuring Noise in Rotating Electrical Machines (ISO 1680:1999, MOD) GB/T 12113-2003 Methods for Measuring Contact Current and Protective Conductor Current (IEC 609901999, IDT) GB 12350 Safety Requirements for Small Power Electric Motors GB/T12665-2008 Requirements for Damp Heat Testing of Electric Motors under General Environmental Conditions JB/T 9615.1-2000 Test Methods for Interturn Insulation of Loose Wound Wires in AC Low Voltage Motors JB/T 10490-2004 Measurement Methods, Evaluation and Limits of Mechanical Vibration and Vibration of Small Power Electric Motors 3 Test Items The various motor test items described in this standard are as follows: a) Measurement of the insulation resistance of the stator winding to the casing and between the windings; b) Measurement of DC resistance of stator winding in actual cold state; c) No-load current and no-load loss; Locked rotor torque and locked rotor current; e) Determination of minimum torque during starting process; Measurement of out of step torque; g) Measurement of traction torque; h) Temperature rise test; Measurement of efficiency and power factor
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