Attributes . limits for harmonic current emissionsclass A IEC 61000-3-2 || conducted RF disturbanceslevel 3 IEC 61000-4-6 || magnetic field at power frequencylevel 4 IEC 61000-4-8 || conducted and radiated emissionsclass B EN 55022 || limitation of voltage changes, voltage fluctuations and flicker in low-voltage IEC 61000-3-3 || electrostatic discharge 8 kVlevel 4 IEC 61000-4-2 || radiated radio-frequency electromagnetic field immunity test IEC 61000-4-3 || electrical fast transient/burst immunity testlevel 4 IEC 61000-4-4 || surge immunity testlevel 4 IEC 61000-4-5 || voltage dips and interruptions immunity test IEC 61000-4-11 . Names