Description:

According to the International Electrotechnical Commission (IEC) standard, electromagnetic compatibility is defined as the ability of a system or device to function properly in its electromagnetic environment without causing interference to other systems and devices.

EMC includes two parts: electromagnetic interference (EMI) and electromagnetic susceptibility (EMS). EMI refers to the electromagnetic noise generated by the machine itself during its normal operation, which may adversely affect other systems. EMS refers to the machine’s ability to perform its intended function without being affected by the surrounding electromagnetic environment.

Test Items:

I. EMI Test Items:

1.Conducted emission (CE) (150kHz to 30MHz);

2.Intermittent interruption voltage (CLICK) (150kHz, 500kHz, 1.4MHz, and 30MHz);

3.Interference power (30MHz to 300MHz);

4.Harmonic currents (2nd to 40th harmonics);

5.Flicker.

II. EMS Test Items:

1.Electrostatic discharge (ESD) immunity;

2.Radiated RF electromagnetic field (80MHz to 1000MHz) immunity;

3.Electrical fast transient/burst (EFT/B) immunity;

4.Surge/Lightning immunity;

5.Current injection (150kHz to 230MHz) immunity;

6.Voltage dips and short interruptions immunity.

Test Standards

EN 55014-1: Electromagnetic compatibility - Requirements for household appliances, electric tools and similar apparatus Part 1: Emission

EN 55014-2: Electromagnetic compatibility - Requirements for household appliances, electric tools and similar apparatus - Part 2: Immunity - Product family standard

EN 55011: Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement

EN 55013/20: Sound and television broadcast receivers and associated equipment - Radio disturbance characteristics - Limits and methods of measurement

EN 55015: Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment

EN 61547: Equipment for general lighting purposes - EMC immunity requirements

EN 55022: Limits and Methods of Measurement of Radio Interference Characteristics of Information Technology Equipment

EN 55024: Information technology equipment - Immunity characteristics - Limits and methods of measurement

EN 60601-1-2: Medical electrical equipment - Part 1-2: General requirements for basic safety and essential performance - Collateral Standard: Electromagnetic disturbances - Requirements and tests

EN 61000-6-1: Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, commercial and light-industrial environments

EN 61000-6-3: Electromagnetic compatibility (EMC) - Part 6-3: Generic standards - Emission standard for residential, commercial and light-industrial environments

EN 61326: Electrical equipment for measurement, control and laboratory use - EMC requirements

IEC 61000-4-4-2004: Electromagnetic compatibility (EMC) –Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test

IEC 61000-4-5-2005: Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test

IEC 61000-4-11-2004: Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests

IEC 61000-4-2-2001: Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement techniques – Electrostatic discharge immunity test