Household appliances, electric tools, regulating controllers using semiconductor devices, electric motor driven electrical, medical equipment, electric toys, vending machines, and movie or slide projectors. Equipment that does not fall within the scope include devices that explicitly state all emission requirements within their RF range in other standards, such as lighting fixtures, power grid communication devices, etc; A regulating controller equipped with a semiconductor device with a rated input current greater than 25A per phase and equipment with such a regulating controller; Separate power supply, etc. EU CE certified electromagnetic compatibility directive: 2004/108/EC testing standards: EN55014-1 (EMI), EN55014-2 (EMS), EN61000-3-2 (Harmonic), EN61000-3-3 (Flicker) Note: The above EN 61000-3-2 and EN 61000-3-3 are applicable to equipment with input currents of less than 16A per phase. If they are greater than 16A, EN 61000-3-12 and EN 61000-3-11 are applicable. EMI continuous disturbance terminal voltage: a power terminal, frequency range: 0.15~30MHz; It is further divided into two limit values: household appliances/similar equipment and electric tools Load terminal and additional terminal disturbance power: frequency range 30M~300MHz limit and "Margin" limit (this limit is one of the criteria for determining whether to measure radiation disturbance) Radiation disturbance: frequency range 30MHz~1GHz; When both of the following conditions are met simultaneously, this project may not be tested: a The measured value of disturbance power is less than the frequency range limit of 30M~300MHz minus the value of "Margin" in the frequency range of 30M~300MHz; b. The maximum clock frequency is less than 30MHz. Otherwise, this project needs to be tested. Intermittent disturbance clicking sound: 150KHz, 500KHz, 1.4MHz, 30MHz four frequency points, upper quartile judgment harmonic current standard: EN 61000-3-2 products with a rated voltage range of AC220~240V need to undergo this project testing. Products with a rated power of 75W and below have unlimited values, and there is no need to test voltage fluctuations or flicker standards: EN 61000-3-3 products with a rated voltage range of AC220~240V need to undergo this project testing; Limit requirements: Short term flicker value Pst ≤ 1.0 Long term flicker value Plt ≤ 0.65 Time exceeding 3.3% during voltage change d (t) ≤ 500ms Relative steady-state voltage change dc ≤ 3.3% Maximum corresponding voltage change dmax Limit values are divided into three types: 4%, 6%, and 7%
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