With the development of electrical and electronic technologies, the increasingly popularization of household electrical appliances and electronic, radio and television, post and telecommunications and computer networks are increasingly developed, the electromagnetic environment is increasingly complicated and deteriorated, making the electromagnetic compatibility of electrical and electronic products (EMI EMI and Electromagnetic anti-EMS) issue has also been the growing concern of governments and manufacturing enterprises. EC government regulations, from January 1, 1996 onwards, all electrical and electronic products must pass EMC certification, affix CE certification mark before they can be sold on the EC market. The move has aroused widespread influence in the world. Governments of all countries have taken measures to impose mandatory management on the RMC performance of electrical and electronic products. According to the EMC directive 2014/30 / EC of the European Union, all electrical and electronic products marketed in the EU must strictly comply with the requirements of EU law in terms of their interference with other products and their immunity to external influences.

 

Electromagnetic Compatibility Directive

 

In addition to the danger posed by machinery, the EU has formulated Directive 89/392: In order to adjust the permissible level of electromagnetic interference in the Member States of the European Union, the Council of the European Union published on May 3, 1989 a report on the compatibility of electromagnetic compatibility The coordination of sexual related laws - Electromagnetic Compatibility Directive (ElectromagneticCompatibility Directive, 89 / 336EEC, referred to as the EMC Directive), followed by 92/31 / EEC, 93/68 / EEC revisions. Now the latest implementation of the EU EMC Directive 2004/108 / EC, EMC tests conducted by our company are implemented within the requirements of the directive.

 

※ What is Electromagnetic Compatibility (EMC)?

 

Before describing the process in compliance with the EMC Directive, define EMC as follows:

 

When a device or device is operated simultaneously with other devices, it does not interfere with the ability to operate normally due to electromagnetic interference. That is:

 

EMI (Electromagnetic Interference) / Electromagnetic Interference:

 

A signal that a device or device has an adverse function during operation appears. The signal is unwanted and meaningless. It may come from outside or from itself.

 

Electromagnetic interference can be divided into two directions to consider:

 

CE (ConductedEmission): Conducted radioactive

 

RE (RadiatedEmission): Radiation radioactivity

 

EMS (Electromagnetic Susceptibility) / Electromagnetic tolerance

 

The ability of a device or device to be unaffected by the surrounding electromagnetic environment during operation.

 

Electromagnetic tolerance can be divided into two directions to consider:

 

CE (Conducted Susceptibility): Conducted radioactivity

 

RE (Radiated Susceptibility): Radiation radioactivity

 

※ What equipment need to comply with electromagnetic compatibility directive?

 

In accordance with Article2.1 of the Directive, the objects to which the EMC Directive applies include all equipment susceptible to electromagnetic interference or those whose own function is susceptible to electromagnetic interference.

 

The instruments and equipment listed in the vicinity of the EMC Directive are as follows:

 

Home radio and television receiver

 

Industrial manufacturing equipment

 

Mobile radio

 

Mobile radio and commercial mobile phone

 

Medical and scientific equipment

 

Information Technology Equipment

 

· General electrical and household appliances

 

Aeronautical and marine wireless equipment

 

Educational electronic equipment

 

Telecommunications networks and equipment

 

· Radio and television transmitter

 

· Lighting and fluorescent lights

 

※ Industrial products to comply with the electromagnetic compatibility directive related standards?

 

EN55011: Limits and methods of measurement of speech interference characteristics ofindustrialelectricaldevice

 

EN50081-2: Electromagneticcompatibility-Genericemissionsstandard

 

Part2: Industrialenvironment

 

EN50082-2: Electromagneticcompatibility-Genericimmunitystandard

 

Part2: Industrialenvironment

 

※ industrial products, electromagnetic compatibility-related test types and standards

 

EMI / electromagnetic interference

 

CE (ConductedEmission) / Conducted emission test: EN55011

 

RE (RadiatedEmission) / Radiation Test: EN55011

 

EMS / electromagnetic resistance

 

CS (Conducted Susceptibility) / conducted immunity test: EN61000-4-6

 

RS (Radiated Susceptibility) / Radiated Immunity Test: EN61000-4-3

 

ESD (Electrostatic discharge) / Electrostatic Immunity Test: EN61000-4-2

 

EFT / Burst (Electrical fast transient) / Fast transient pulse immunity test: EN61000-4-4

 

· PFMF (Powerfrequencymagneticfield) / power frequency magnetic field immunity test: EN61000-4-8

 

* Surge / lightning surge immunity test: EN61000-4-5

 

* PQF (Voltagedips, interruptionandvariation) / Voltage Transient Immunity Test: EN61000-4-11

 

*: For reference only, not necessary.

 

※ other products of the electromagnetic compatibility directive related standards

 

EN55011: Suitable for industrial, scientific and medical products

 

EN55013: Suitable for broadcast receivers and ancillary equipment

 

EN55014: Suitable for household appliances and portable tools

 

EN55015: Suitable for lighting products

 

EN55022: suitable for information technology products