The purpose of EMC testing is to detect the impact of electromagnetic radiation generated by electrical products on human body, power grid in public places and other normal electrical products.
EMC test, also known as electromagnetic compatibility, refers to the comprehensive evaluation of electromagnetic interference (EMI) and anti-interference capability (EMS) of electronic products. It is one of the most important indicators of product quality. The measurement of electromagnetic compatibility consists of test site and test instrument.
Electromagnetic compatibility (EMC) is a subject which studies that all kinds of electrical equipment can coexist without degradation under the condition of limited space, time and spectrum resources. It includes two parts: electromagnetic interference and electromagnetic sensitivity. The electromagnetic interference test is to measure the electromagnetic wave signal generated and emitted by the tested equipment under normal working condition to reflect the intensity of interference to the surrounding electronic equipment. Electromagnetic sensitivity test is to measure the anti-interference ability of the tested equipment to electromagnetic disturbance
EMC test items
Conduction emission (9khz-30mhz)
Power clamp (30mhz-300mhz)
Magnetic emission (9khz-30mhz)
Radiated emission (30mhz-18ghz)
Intermittent conducted interference Click
Harmonics class A, B, C, D
Voltage flicker
Electrostatic ESD (± 0.1 - ± 16.5kv)
Radiated Immunity (below 1GHz)
Fast Burst EFT / b (± 0.1 - ± 4.4kv)
Surge (0.1-6.6kv)
Conducted immunity CS (0.1-30v)
Anti magnetic interference MS (0-120a / M)
Power off dips (0% - 100%)
Oscillatory waves surge 0.1-6.6kv waveform 100kHz
Harmonic and interharmonic immunity
Magnetic field EFM 10hz-400khz (en50366)
What standards does EMC have?
EN 55014-1: radiation of household appliances
EN 55014-2: Radiated Immunity of household appliances
EN 55011: radiation of industrial, scientific and medical equipment
EN 55013 / 20: audio and video products
EN 55015: radiation of lighting appliances
EN 61547: radiation immunity of lighting appliances
EN 55022: radiation of information technology equipment
EN 55024: radiation immunity of information technology equipment
EN 60601-1-2: electromagnetic compatibility of medical electronic equipment
EN 61000-6-1: radiation from general purpose equipment for use in residential, commercial and light industrial environments
EN 61000-6-3: Radiated Immunity of general purpose equipment for use in residential, commercial and light industrial environments
EN 61326: electromagnetic compatibility of measuring instruments and equipment
IEC 61000-4-4-2004 electromagnetic compatibility testing and measurement techniques electrical fast transient burst immunity test
IEC 61000-4-5-2005 electromagnetic compatibility testing and measurement techniques Surge immunity test
IEC 61000-4-11-2004 electromagnetic compatibility testing and measurement techniques immunity tests for voltage sags, short interruptions and voltage variations
IEC 61000-4-2-2001 electromagnetic compatibility testing and measurement techniques electrostatic discharge immunity test
gmtlight test
