Appliance EMC Testing Service
栏目:EMC Electromagnetic Compatibil 发布时间:2018-12-03 20:51
Appliance EMC Testing Service Household electrical appliances in the electromagnetic interference source is mainly in the appliance with the commutator motor running sparks and mechanical switches, a variety of controllers, protector moveme...

Appliance EMC Testing Service

 Household electrical appliances in the electromagnetic interference source is mainly in the appliance with the commutator motor running sparks and mechanical switches, a variety of controllers, protector movements formed. For example, the vacuum cleaner, the hair dryer, the agitator, the shaver and so on by the electric motor with the commutator during the operation, the brushes and the commutator contact spark to produce the electromagnetic interference; The rice cooker, the electric iron, , Washing machines and other frequent switching action caused by electromagnetic interference; air conditioning start-up required for large current will make the grid voltage is temporarily decreased, motor and other inductive load start will lead to power supply power factor down, inverter air conditioner power electronic devices also With the remote control of household appliances, automatic washing machines, electric water heaters, microwave ovens and other household appliances with microprocessors, the use of high-frequency harmonic control, The use of two-level digital signal will cause electromagnetic disturbance, and with the increasing frequency of the clock frequency of its harassment can be as high as hundreds of MHz; microwave ovens, induction cooker electromagnetic energy generated by leakage will not only cause electromagnetic disturbance, but also for Human health hazards.

 

CISPR14-1 and CISPR14-2 are the most important electromagnetic compatibility standards for household appliances, while microwave ovens and induction cookers (household electromagnetic induction devices) belong to Group B equipment of industrial, scientific and medical (ISM) equipment. Therefore, their electromagnetic interference characteristics Shall comply with the provisions of CISPR11. The European Union corresponds to the electrical appliances EMC standards EN 55014-1 and EN55014-2, microwave ovens and induction cooker EN55011.

 

In the US market, common household appliances are FCC Part 15 Unintentional RF Equipments, which need to be "certified" in consumer ISM equipment, need to meet the requirements of FCC Part 18, the certification model will need to select the declaration of conformity (DOC, Declaration of Conformity or Certification.

 

CISPR 14-1 / EN 55014-1 Emission of household appliances and power tools

Household Appliances and Electric Tools - Resistance to Shrinkage (CISPR 14-2 / EN 55014-2)

CISPR 11 / EN 55011 Radio disturbance of industrial medical (ISM) equipment

EN61000-3-2 Harmonic current

EN61000-3-3 Voltage fluctuations and flicker limits

Electrostatic Discharge (IEC)

IEC / EN61000-4-3 Radio-frequency radiated electromagnetic fields

IEC / EN61000-4-4 electrical fast transient bursts

IEC / EN61000-4-5 Surges

IEC / EN61000-4-6 Conducted disturbances due to RF field induction

IEC / EN61000-4-11 voltage temporarily, short interrupt

FCC Part 15 Products containing unintentional and intentional radiation sources

FCC Part 18