Electromagnetic Compatibility Certification Safety Certification 10

Electromagnetic compatibility includes two aspects: EMI (electromagnetic interference) and EMS (electromagnetic immunity).

Among them, EMI includes: CE (Conducted Interference), RE (Radiated Interference), PT (Interference Power Test) and so on.

EMS includes: ESD (Electrostatic Discharge), RS (Radiation Tolerance), EFT B (Fast Pulse Tolerance), Surge (Lightning Strike), CS (Conducted Tolerance) and many more.

All of these tests are tested by a specialized laboratory. It is a necessary condition for electronic goods to obtain certification before entering the market. There are many such laboratories in China, most of which are concentrated in Shenzhen, Shanghai, Beijing and other places.

Standards used for EMC certification. GB Harmonic Current Limits for Low-Voltage Electrical and Electronic Equipment (Equipment with 16A per Phase) This standard was published on December 14, 1998 and came into force on December 1, 1999. At present, the standard is encouraged, and if it is unqualified, it will not be used as the basis for the overall judgment of certification.

Reasons for doing EMC certification:

With the development of electrical and electronic technology, the increasing popularity and electronicization of household electrical appliances, the increasing development of radio and television, post and telecommunications and computer networks, and the increasingly complex and deteriorating electromagnetic environment, the electromagnetic compatibility of electrical and electronic products (EMC electromagnetic interference EMI and electromagnetic anti-EMS) has also received increasing attention from various countries and manufacturers. The electromagnetic compatibility (EMC) of electronic and electrical products is a very important quality index, which is not only related to the reliability and safety of the product itself, but also may affect the normal operation of other equipment and systems, and is related to the protection of the electromagnetic environment. In order to regulate the electromagnetic compatibility of electronic products, all developed countries and some developing countries have formulated electromagnetic compatibility standards.

Electromagnetic compatibility standards are the basic requirements for making products work properly in the actual electromagnetic environment. The reason why it is called a basic requirement, that is, even if the product meets the EMC standard, interference problems may occur in actual use. Most national standards are based on those developed by the International Electrotechnical Commission (IEC).

The full name of EMC (electromagnetic compatibility) is Electro Magnetic Compatibility, which is defined as "the ability of equipment and systems to work normally in their electromagnetic environment and not to cause unbearable electromagnetic disturbance to anything in the environment" This definition contains two meanings, first, the equipment should be able to work normally in a certain electromagnetic environment, that is, the equipment should have a certain electromagnetic immunity (EMS);Secondly, the electromagnetic disturbance generated by the device itself must not have an excessive impact on other electronic products, i.e., electromagnetic disturbance (EMI).

In order for all electronic products to be able to ensure their normal operation in the same electromagnetic environment and not interfere with other electronic products, it is equivalent to an agreement, which everyone must abide by in order to coexist.

Upstairs is right, what the market needs is like laws and regulations, and it needs to be able to send private messages.

Basically, every country in the world has EMC (electromagnetic compatibility) requirements.

EMC is the abbreviation of Electro Magnetic Compatibility, that is, electromagnetic compatibility.

By the way, only those with EMC letters after China's CCC certification mark indicate electromagnetic compatibility certification.

When we watch TV, if someone is next to us using a household appliance such as a hair dryer or electric shaver, there will be annoying streaks of snowflakes on the screen. The rice cooker can't cook rice, and the air conditioner that is obviously turned off starts ...... itself after a whileThese are common electromagnetic interference phenomena. Worse still, if the EMI signal interferes with medical electronics monitoring or an aircraft in flight, it can have unintended consequences.

Electromagnetic compatibility (EMC) refers to the ability of a device or system to operate in accordance with its electromagnetic environment without intolerable electromagnetic interference to any equipment in its environment. Therefore, EMC includes two requirements: on the one hand, it means that the electromagnetic interference generated by the equipment to the environment during normal operation cannot exceed a certain limit;On the other hand, it means that the appliance has a certain degree of immunity to electromagnetic interference in the environment, that is, electromagnetic sensitivity.

Electromagnetic interference refers to any electromagnetic phenomenon that degrades the performance of a device or system. The so-called electromagnetic interference refers to the degradation of the performance of equipment or systems caused by electromagnetic interference.

EMC includes EMI (electromagnetic interference) and EMS (electromagnetic susceptibility) two parts, the so-called EMI electromagnetic interference, is the machine itself in the process of performing its due function to produce electromagnetic noise that is not conducive to other systems;EMS refers to the ability of a machine to perform its intended function without being affected by the surrounding electromagnetic environment.

The ability of a device or system to function properly in its electromagnetic environment without posing an unbearable electromagnetic disturbance to anything in that environment (GB T 4365-1995).

The "CCC" certification mark is divided into four categories.

The current "CCC" certification mark is divided into four categories, which are:

1 CCC+S safety certification mark;

2 CCC+EMC electromagnetic compatibility certification mark;

3 CCC+S&E safety and electromagnetic compatibility certification mark;

4 CCC+F fire certification mark;

Reference Links.

A brief introduction to EMC, EMC is not a certification, it is a test, that is, electromagnetic compatibility. EMC is divided into EMI (Electromagnetic Interference) and EMS (Electromagnetic Immunity). There are EMI test items in FCC certification and EMC test items in CE certification.