Electromagnetic compatibility (EMC) refers to the ability of a device or system to meet the requirements in its electromagnetic environment and not cause intolerable electromagnetic interference to any device in its environment.
EMC includes two requirements: on the one hand, the electromagnetic interference of the equipment to the environment during normal operation cannot exceed a certain limit; on the other hand, the equipment has a certain degree of resistance to electromagnetic interference in the environment, that is, electromagnetic sensitivity.
Why do you need EMC certification?
EMC is a very important quality indicator, which is not only related to the working reliability and safety of the product itself, but also may affect the normal operation of other equipment and systems, as well as the protection of the electromagnetic environment. The European Communist government stipulates that from January 1, 1996, all electronic products must pass EMC certification and be affixed with the CE mark before they can be sold in the European Community market.
The core requirements of CE-EMC certification:
EMC directive CE certification requires that the electromagnetic radiation generated by all electrical appliances, electronic products, electrical equipment, and equipment shall not exceed the prescribed limits. In order to avoid affecting the normal operation of other equipment, it must also have a certain anti-interference ability to ensure that the product works normally under normal conditions (that is, it can resist other equipment and is lower than the electromagnetic interference allowed by industrial standards.)
Typical electronic and electrical products, generally, equipment and systems working in electromagnetic environments need to do EMC certification, and electronic appliances are one of the products with more domestic exports. However, not all electronic and electrical products need to do EMC certification, everything is subject to the specific product.
When doing EMC certification, products generally need to be certified EMC tests, and test items vary from product to product, such as electrostatic discharge immunity, surge, conduction, etc. Only after passing the test can you pass the test EMC certification.
The above is about the reasons and core requirements for EMC certification. Because the EU requires that all electrical and electronic products must pass EMC certification and be affixed with the CE mark before they can be sold on the market, sellers need to obtain EMC certification if they want to sell electrical and electronic products in these markets.