EMC testing, also known as electromagnetic compatibility (EMC), one of the most important indicators of product quality, refers to the comprehensive interference size (EMI) and anti-interference ability (EMS) evaluation of electronic products in the electromagnetic field. Electromagnetic compatibility measurement consists of the test site and test instruments.
The purpose of EMC test is to detect the influence of electromagnetic radiation produced by electrical products on human body, power grid in public places and other electrical products in normal operation.
EMC standards
EN 55014-1: Radiation from household appliances
EN 55014-2: Radiation immunity for household electrical appliances
EN 55011: Radiation from industrial, scientific and medical equipment
EN 55013/20: Audio and video products
EN 55015: Radiation from lighting appliances
EN 61547: Radiation immunity for lighting appliances
EN 55022: Radiation from information technology equipment
EN 55024: Radiation immunity for information technology equipment
EN 60601-1-2: Electromagnetic compatibility of medical electronic equipment
EN 61000-6-1: Radiation from general equipment for use in residential, commercial and light industrial environments
EN 61000-6-3: Radiation immunity for general purpose equipment used in residential, commercial and light industrial environments
EN 61326: Electromagnetic compatibility of measuring instruments and equipment
IEC 61000-4-4-2004 Electromagnetic compatibility (EMC) tests and measurement Techniques Electrical fast transient pulse group immunity tests
IEC 61000-4-5-2005 Electromagnetic Compatibility (EMC) tests and Measurement Techniques surge (shock) immunity tests
IEC 61000-4-11-2004 Electromagnetic compatibility (EMC) tests and measurement techniques – Immunity tests for voltage dips, short interrupts and voltage changes
IEC 61000-4-2-2001 Electromagnetic compatibility tests and measurement techniques Electrostatic discharge immunity tests
EMC testing items
Conduction emission （9kHz-30MHz）
Power clamp （30MHz-300MHz）
Magnetic emission（9kHz-30MHz）
Radiated emission（30MHz-18GHz）
Intermittent conduction interferes with CLICK
Harmonics class a, b, c, d
Voltage flicker plt .pst
Static EDS（±0.1-±16.5kV）
Radiation immunity (below 1GHz)
Fast pulse group EFT/B（±0.1-±4.4kV）
Surge （0.1-6.6kV）
Conducted immunity CS（0.1-30V）
Anti magnetic field interference MS（0-120A/m）
Power Dips（0%-100%）
Oscillatory Waves Surge 0.1-6.6kV
Harmonic、interharmonic immunity EFM 10Hz-400kHz （EN50366）