Scope
This section specifies all the content required for measuring, labeling, and verifying the noise emission characteristics of rotating electrical machines under standard conditions. At the same time, it also specifies the applicable noise testing methods and the operating status and installation method during the test The noise emission characteristics include sound power level and emission sound pressure level. The measurement of these quantities is used for: - comparison of motor emission noise
- Enable the manufacturer to determine the noise emission label value; And - Yo sound control The application of this section can ensure the same level of accuracy as the measurement of noise emission characteristics using basic noise testing methods. The noise testing methods allowed in this section are the laboratory method (Level 1), engineering method (Level 2), and simplified method (Level 3). Generally, engineering level (Level 2) methods are recommended This section is applicable to motors of any length, width, or height
Normative reference documents
The clauses in the following documents are approved by GB/T
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