Conducted Emission Test, abbreviated as CE Test, is also commonly referred to as Conducted Emission Test or Disturbance Voltage Test. The essence of conducted disturbance is that electromagnetic waves need to adhere to the conductor for propagation at low frequencies due to wavelength reasons. Based on the properties of the conductor, we usually divide conducted disturbance into: power terminal conducted disturbance, signal terminal conducted disturbance, and load terminal conducted disturbance. Conducting interference requires a professional testing environment and isolation of electromagnetic interference signals from external spaces. Therefore, the standard stipulates that conducting interference must be conducted in a shielded room. What testing equipment is required for conducting disturbances? There are mainly receivers, artificial power supply networks, voltage probes, pulse limiters (if the artificial power supply network has a built-in pulse limiter, it can also be omitted), and so on
Power terminal CE
Conducted disturbance at the power terminal is the most common and easily understood. Power terminal CE refers to the conducted disturbance on the EUT power supply line. Taking lighting products as an example, when a lamp is working normally, the internal circuit will generate electromagnetic disturbance, and some low-frequency disturbance signals will be transmitted to the power grid through the power supply line.
, This part of electromagnetic disturbance signal refers to the conducted disturbance signal at the power supply end. Which specific products need to be CE powered? We classify the current mainstream industries into the following categories: lighting industry, home appliance industry, medical industry, power supply industry, power meter industry, new energy and automotive industry, etc. The main testing equipment for power side CE includes receivers, artificial power networks, and pulse limiters. The industry should be familiar with receivers and pulse limiters, so this article will not go into detail. The main focus of this article is to explain artificial power networks Artificial main network is abbreviated as AMN. The description of AMN in GB6113.102-2018 is as follows: an artificial power network provides a specified range of impedance to the EUT within the RF range, and can isolate the experimental circuit from useless RF signals on the power supply, thereby coupling the disturbance voltage to the network on the measurement receiver
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