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Program overview

The electromagnetic interference in the control board of small household appliances is mainly EMS interference, that is, electrostatic discharge, group pulse, lightning surge and other interference. The corresponding interference equipment names are: electrostatic discharge generator, group pulse generator, lightning surge generator. The interference of the control board of small household appliances mainly comes from three aspects: the first is the interference generated by the control board itself, the second is the interference from the load, and the third is the interference from the line.

Application document

Main criteria

CISPR 14-1/GB 4343.1

CISPR 14-2/GB 4343.2

IEC 61000-3-2/GB 17625.1

IEC 61000-3-3/GB 17625.2
《Electromagnetic compatibility requirements for household appliances, electric tools and similar appliances Part 1: emission》

《Electromagnetic compatibility requirements for household appliances, electric tools and similar appliances Part 2: immunity》

《Electromagnetic compatibility limit harmonic current emission limit (equipment input current ≤ 16A per phase)》

《Electromagnetic compatibility limit limits the voltage change, voltage fluctuation and flicker of equipment with rated current ≤ 16A per phase and unconditionally connected in the public low-voltage power supply system》

Test items

EMS test item 5

? Electrostatic discharge immunity, contact discharge 4KV, air discharge 8Kv
? RF electric field radiation immunity, maximum test field strength 3v/m
? Electrical fast transient burst immunity, maximum test level 1kV
? Surge (impact) immunity, maximum test level 2KV
? RF conducted disturbance immunity, maximum test level 3V
? Voltage sag, short-time interruption and voltage variation immunity, according to iec61000-4-11
? The low-frequency immunity of harmonic, inter harmonic and grid signals at the AC power port shall be in accordance with iec61000-4-13

EMS test item 5

? Conducted disturbance voltage, 150khz-30mhz, qp/av
? Disturbance power, 30mhz-300mhz, qp/av
? Click sound, 150khz-30mhz, QP
? Radiation disturbance (toys only), 30mhz-1ghz, QP
? Harmonic current emission test according to IEC 61000-3-2
? Voltage fluctuation and flicker test according to IEC 61000-3-3

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