Tag Archives: EN 55022 EMC Standard

CISPR 22

CISPR 22
CISPR 22

CISPR 22 (An EMC standard for Information Technology (IT) Equipment)

CISPR 22 for Radio Disturbance Characteristics-Limits and Methods of Measurement. Applicable for IT equipment with a rated supply voltage not exceeding 600 V.

CISPR 22

ITC India Pvt Ltd is a NABL approved lab in electronics, electrical and photometry. BIS approved for all lighting products and TEC approved for Electronics.  We are performing EMI/EMC testing on electromedical, IT equipment, lighting, Laboratory, and household product. Testing is conducted in a shielding room.

CISPR 22 is accepted by most members of the European Community.

CISPR 22 discriminates between Class A and Class B equipment and it gives figures for conducted and radiated emissions for each class. In addition, CISPR 22 requires certification over the frequency range of 0.15 MHz to 30 MHz for conducted emissions. CISPR limits are provided in dBµV

A brief of CISPR22 Limits

 CISPR 22 CLASS A CONDUCTED EMI LIMIT
Frequency of Emission(MHz)Conducted Limit (DBMV)
Quasi PeakAverage
0.15 – 0.507966
0.50-30.007360
CISPR 22 CLASS B CONDUCTED EMI LIMIT
Frequency of Emission(MHz)Conducted Limit (DBMV)
0.15-0.5066 to 5656 to 46
0.50-5.005646
5.00- 30.006050
 CISPR 22 CLASS A 10-METRE RADIATED EMI LIMIT
Frequency of Emission(MHz)Field strength limit(DBMV/M)
30- 8839
88-21643.5
216-96046.5
Above 96049.5
CISPR 22 CLASS B 3-METRE RADIATED EMI LIMIT
Frequency of Emission(MHz)Field strength limit(DBMV/M)
31- 8840
88-21643.5
216-96046.0
Above 96054.0