Inverter is a converter that converts direct current (battery, storage battery) into alternating current with constant and voltage or variable frequency and voltage (generally 220V, 50Hz sine wave). If the inverter is to be sold the market or exported abroad, it needs to undergo EMC testing to comply with local environmental regulations. EMC testing is also known as electromagnetic compatibility (EMC), which refers to a comprehensive assessment of the magnitude of electromagnetic field interference (EMI) and the ability to resist interference (EMS) of electronic products. Purpose of EMC testing is to detect the impact of electromagnetic radiation generated by electrical products on human body, public place power grid and other electrical products in normal operation.
Process of EMC (electromagnetic compatibility) testing for inverters usually includes the following steps:
1. Test environment: performed in a shielded room or anic chamber to reduce external interference.
2. Conducted emission test (Conducted Emission) Test purpose: to measure the electromagnetic interference conducted the inverter through the power line or signal line.
3. Radiated emission test (Radiated Emission)* Test purpose: to measure the electromagnetic radiated by the inverter through space. Advertisement After this LOGO was designed, I realized how low the previous LOGO design was! ×
4. Conduction immunity test (Conducted Immunity) Test purpose: to evaluate the inverter's immunity to interference conducted through the power line signal line.
5. Radiation immunity test (Radiated Immunity) Test purpose: to evaluate the inverter's immunity to space radiation interference
6. Electrostatic discharge test (ESD) Test purpose: to evaluate the inverter's immunity to electrostatic discharge.
7. Electrical fast transient pulse group test (EFT/Burst) Test purpose: to evaluate the inverter's immunity to electrical fast transient pulse groups.
8. Surge test (Surge) Test purpose: to evaluate the inverter's immunity to surge voltage.
9. Voltage sag interruption test (Voltage Dips and Interruptions) Test purpose: to evaluate the inverter's immunity to voltage sag and interruption.
10. Test report Record all test data, including test conditions, test results, etc., analyze the test results, judge whether the inverter meets relevant EMC standards, write the test report, including the test method, test results, conclusions, etc.
11. Certification and marking Certification: after passing the test, apply for EMC certification from the certification body. Marking: after obtaining the certification, the corresponding EMC certification marking can be made the product.
The above is the basic process of EMC testing for inverters, and the specific steps may be adjusted due to different standards and testing requirements. you have other questions about EMC testing, please contact the professional technicians of Shifu Inspection and Testing Technology Service Co., Ltd. for answers. The above (including pictures and videos) is uploaded and published by the "Fast Transmission Number" user of the creator platform.
Media Contact
Company Name: Suzhou Maili Electrical Appliance Co., Ltd.
Email:Send Email
Country: China
Website: https://www.mailiinverter.com/
