EMC Testing Standards for Industrial Products

EMC testing for industrial products also has its own set of standards. In this article, we will explore the types of EMC testing for industrial products and the relevant standards.

What is EMC, EMI, and EMS?

1.1 What is EMC (Electromagnetic Compatibility)?

Electromagnetic Compatibility (EMC) is the ability of a device or system to operate normally in the presence of electromagnetic interference without affecting other devices.

EMC includes both EMI (Electromagnetic Interference) and EMS (Electromagnetic Susceptibility).

1.2 What is EMI (Electromagnetic Interference)?

Electromagnetic Interference (EMI) refers to the occurrence of unwanted and disruptive electromagnetic signals during the operation of a device or system. These signals can originate externally or internally and may interfere with the function of electronic components. For example, the "snow" on a TV screen indicates signal interference.

EMI can be considered in two ways:

- CE (Conducted Emission): Refers to interference where signals are coupled (interfere) from one electrical network to another via conductive mediums.

- RE (Radiated Emission): Refers to interference where signals are coupled (interfere) from one electrical network to another through space.

1.3 What is EMS (Electromagnetic Susceptibility or Immunity)?

Electromagnetic Susceptibility (EMS) refers to the ability of a device or system to operate normally without being affected by the surrounding electromagnetic environment.

EMS can also be considered in two ways:

- CS (Conducted Susceptibility): Resistance to conducted interference.

- RS (Radiated Susceptibility): Resistance to radiated interference.

Types of EMC Testing for Industrial Products and Relevant Standards

EMI (Electromagnetic Interference)

- CE (Conducted Emission) Testing: EN 55011

- RE (Radiated Emission) Testing: EN 55011

EMS (Electromagnetic Susceptibility)

- CS (Conducted Susceptibility) Testing: EN 61000-4-6

- RS (Radiated Susceptibility) Testing: EN 61000-4-3

- ESD (Electrostatic Discharge) Susceptibility Testing: EN 61000-4-2

- EFT/Burst (Electrical Fast Transient) Susceptibility Testing: EN 61000-4-4

- PFMF (Power Frequency Magnetic Field) Susceptibility Testing: EN 61000-4-8

- Surge Susceptibility Testing: EN 61000-4-5

- PQF (Voltage Dips, Interruptions, and Variations) Susceptibility Testing: EN 61000-4-11