Hi Everyone,
I am confusing on weather Harmonic Emissions/Voltage Fluctuations/Flicker applies to a CISPR 11 Class A Equipment or not. According to the CISPR 11, Class A equipment is equipment NOT used in domestic establishments and NOT in establishments directly connected to a low voltage power supply network which supplies buildings used for domestic purposes.
According to IEC 61000-3-2 and IEC 61000-3-3, these two both apply to equipment rated <=16A and CONNECTED TO THE PUBLIC LOW VOLTAGE SUPPLY SYSTEMS, which means it only applies to CISPR 11 Class B equipment.
But when I checked with many medical equipment IFUs, I found that even for CISPR 11 Class A equipment, they do not mark "not applicable" in the harmonic emissions and voltage fluctuations/flicker emissions line in the Guidance and manufacturer's declaration - electromagnetic emission table. Can anybody help to explain why?
Thanks in advance,
Joe

I am confusing on weather Harmonic Emissions/Voltage Fluctuations/Flicker applies to a CISPR 11 Class A Equipment or not. According to the CISPR 11, Class A equipment is equipment NOT used in domestic establishments and NOT in establishments directly connected to a low voltage power supply network which supplies buildings used for domestic purposes.
According to IEC 61000-3-2 and IEC 61000-3-3, these two both apply to equipment rated <=16A and CONNECTED TO THE PUBLIC LOW VOLTAGE SUPPLY SYSTEMS, which means it only applies to CISPR 11 Class B equipment.
But when I checked with many medical equipment IFUs, I found that even for CISPR 11 Class A equipment, they do not mark "not applicable" in the harmonic emissions and voltage fluctuations/flicker emissions line in the Guidance and manufacturer's declaration - electromagnetic emission table. Can anybody help to explain why?
Thanks in advance,
Joe


