EMC (Electromagnetic Compatibility), electromagnetic interference wave is the product specification does not affect the operation of the other products , but products also have sufficient capacity to resist outside interference . Therefore , EMC must include two aspects:
EMI (Electromagnetic Interference) an electromagnetic interference, EMI refers to the device during normal operation of the host environment can not exceed a certain limit , the electromagnetic interference can be considered divided into two directions :
‧ CE (Conducted Emission) - Conducted radioactive
‧ RE (Radiated Emission) - Radioactive Radiation
EMS (Electromagnetic Susceptibility) an electromagnetic tolerance of the device is the presence of electromagnetic interference in the environment where a degree of noise immunity , tolerance can be divided into two electromagnetic driving consider:
‧ CS (Conducted Susceptibility) - Conducted tolerance
‧ RE (Radiated Susceptibility) - Radiation tolerance



Information technology equipment in accordance with EU EMC test standards are as follows :
A , EMI: divided into general , commercial or light industrial zone environments (Class B) and heavy industry environments (Class A)
1.EN 55022:
Conducted Emission (Class B or A)
Radiated Emission (Class B or A)
2.EN 61000-3-2: Harmonics (Class A or D)
3.EN 61000-3-3: Flicker
Test items and determine level table
 


EN 61000-3-2: Harmonics ( less than 75W or 600W measured above Class A, higher than 75w measuring Class D)
EN 61000-3-3: Flicker

B, EMS: regardless of general , commercial or light industrial zone environments (Class B) and heavy industry environments (Class A)
EN 55024
Test items and determine level table
 


Grade determination :
A non- permitted malfunction during the test
During B testing allows malfunction, but the end of the test , to restore function on their own.
C during the test allows malfunction , but the end of the test , the function can be manually restored .
D allows the malfunction during the test , but the end of the test functions can not be restored .

Our company produces EU plug adapters meet EMC standard, please contact us.