This standard specifies the testing requirements, preparation before testing, no-load test, locked rotor test, load test, determination of loss and efficiency, thermal test, maximum torque and minimum torque test, etc. for three-phase cage induction motors powered by frequency converters. This standard applies to three-phase cage induction motors powered by frequency converters. This standard does not apply to traction motors. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T 755-2008 Rotating Electrical Machines - Rating and Performance GB/T 1032-2012 Test Methods for Three Phase Asynchronous Motors GB/T 10068-2008 Mechanical Vibration of Motors with a Shaft Center Height of 56 mm and Above - Measurement of Vibration Evaluation and Limits GB/T 10069.1-2006 Measurement Methods and Limits of Noise from Rotating Electrical Machines - Part 1: Measurement Methods of Noise from Rotating Electrical Machines GB/T18039.4-2017 Electromagnetic Compatibility Environment - Compatibility Levels for Low Frequency Conducted Disturbances in Factories GB/T 21211-2017 Equivalent Load and Superimposed Test Techniques - Indirect Method for Determining Temperature Rise of Rotating Electrical Machines GB/T 25442-2010 Rotating Electrical Machines (excluding Traction Motors) Test Method for Determining Loss and Efficiency GB/T 32877-2016 Specific Test Method for Determining Loss and Efficiency of AC Induction Motors Powered by Frequency Converters GB/T 34861-2017 Specific Test Method for Determining Various Losses of Large Motors
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China