What are EMC's main tests? EMC electromagnetic compatibility test standard

Date：2022-08-31 17:17:00Views：780

EMC test is also called electromagnetic compatibility (EMC). The full name is electro magnetic compatibility, which refers to the comprehensive evaluation of the electromagnetic interference (EMI) and anti-interference capability (EMS) of electronic products. It is one of the important indicators of product quality. The measurement of electromagnetic compatibility consists of test sites and test instruments. The purpose of EMC test is to detect the impact of electromagnetic radiation generated by electrical products on human body, public power grid and other normal electrical products.

EMC is a very important quality index, which not only relates to the working reliability and use safety of the product itself, but also may affect the normal operation of other equipment and systems and the protection of electromagnetic environment. The European community government stipulates that from January 1, 1996, all electrical and electronic products must pass EMC certification and be affixed with CE mark before they can be sold in the European Community market.

EMC test items:

1. Electrostatic discharge immunity test; Radio frequency electromagnetic field radiation immunity test

2. Electrical fast transient burst immunity test; Surge (impact) immunity test

3. Conducted disturbance immunity induced by RF field; Harmonic and interharmonic test of power supply system and connected equipment

4. Power frequency magnetic field immunity test; Pulse magnetic field immunity test

5. Damping oscillation magnetic field immunity test; Immunity test for voltage sag, short-time interruption and voltage change

6. Ringing wave immunity test; Low frequency immunity test of AC power port harmonic, interharmonic and power network signal

7. Voltage fluctuation immunity test; Common mode conducted disturbance immunity test

8. Ripple immunity test of DC power input port; Conducted emission test; Radiation emission test

Basic testing standard:

GB / t17626.2-2018 electromagnetic compatibility test and measurement technology electrostatic discharge immunity test

GB / t17626.3-2016 electromagnetic compatibility test and measurement technology radio frequency electromagnetic field radiation immunity test

GB / t17626.4-2018 electromagnetic compatibility test and measurement technology electrical fast transient burst immunity test

GB / t17626.5-2019 electromagnetic compatibility testing and measurement technology surge (impact) immunity test

GB / t17626.6-2017 electromagnetic compatibility test and measurement technology immunity to conducted disturbances induced by radio frequency field

GB / t17626.7-2017 electromagnetic compatibility test and measurement technology guide for measurement of harmonics and interharmonics of power supply system and connected equipment and measuring instruments

GB / t17626.8-2006 electromagnetic compatibility test and measurement technology power frequency magnetic field immunity test

GB / T 17626.9-2011 electromagnetic compatibility test and measurement technology pulse magnetic field immunity test

GB / t17626.10-2017 electromagnetic compatibility test and measurement technology damping oscillation magnetic field immunity test

GB / T 17626.11-2008 electromagnetic compatibility testing and measurement technology immunity test for voltage sag, short-time interruption and voltage change

GB / t17626.12-2013 electromagnetic compatibility test and measurement technology ringing wave immunity test

GB / t17626.13-2006 electromagnetic compatibility test and measurement technology - low frequency immunity test of harmonic, interharmonic and grid signals at AC power supply port

GB / t17626.14-2005 electromagnetic compatibility test and measurement technology voltage fluctuation immunity test

GB / t17626.16-2007 electromagnetic compatibility test and measurement technology 0Hz ~ 150kHz common mode conducted disturbance immunity test

GB / t17626.17-2005 electromagnetic compatibility test and measurement technology ripple immunity test of DC power input port

GB / t17626.18-2016 electromagnetic compatibility test and measurement technology damping oscillation wave immunity test

GB / t17626.28-2006 electromagnetic compatibility testing and measurement technology - power frequency variation immunity test

GB / T 17626.29-2006 electromagnetic compatibility test and measurement technology immunity test for voltage sag, short-time interruption and voltage change of DC power input port

GB / t17626.31-2021 electromagnetic compatibility test and measurement technology Part 31: Broadband conducted disturbance immunity test of AC power port

GB / T 17626.34-2012 electromagnetic compatibility test and measurement technology voltage sag, short-time interruption and voltage change immunity test of equipment with main power supply current of more than 16A per phase.

GB / T 9254-2008 radio disturbance limits and measurement methods for information technology equipment

Gb4824-2019, CISPR 11:2016 industrial, scientific and medical equipment radio frequency disturbance characteristics limits and measurement methods.