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EMC Measurements

Immunity and emission measurements

DARE!! Consultancy is an accredited test house that performs full compliant measurements and examinations which enables customers to apply CE Marking.

What is EMC?

EMC stands for Electro Magnetic Compatibility. The definition of EMC is how electrical equipment behaves in its electromagnetical environment. In other words in what way does equipment have influence on other equipment or, in what way is equipment influenced by other equipment? The field of operations of EMC is to be devided in roughly two areas:

  • Immunity, the way in which equipment is resistant to electromagnetic radiation and
  • Emission, the way in which equipment transmits electromagnetic radiation.

The EMC Directive

In Europe the EMC Directive is applicable. This is a so called 'New Approach Directive' in which only the essential requirements are stated. These essential requirements can be written down in one sentence: "You will not disturb and you will not be disturbed". All electrical equipment transmits radiation and all electronical devices are more or less sensitive for electromagnetic radiation. That's why directives are applicable for a variety of product groups.

EMC Standards

These standards are harmonised by the European Commission. In other words they are applicable in all the countries of the European Community. If there is no product standard available for a certain product then the so called generic standard is applicable. Product standards prevail over the generic standards. The measuring methods are established (per EMC phenomenon) in basic standards. Product standards and the generic standards refer to these basic standards. Basic standards are not harmonised.

EMC phenomena

In general EMC phenomena are:

  • Radiated immunity (by air through an antenna)
  • Radiated emission (by air through an antenna)
  • Conducted immunity (through cables)
  • Conducted emission (through cables)
  • ESD (Electro Static Discharge)
  • Surge (Severe energetic pulses)

Other phenomena are also part of the EMC working area:

  • Net harmonics
  • Flicker
  • Voltage dips and interruptions

Scope

DARE!! Consultancy carries out full compliance tests according to a wide range of international product standards. These include house-hold equipment, consumer equipment, laboratory and ISM equipment, ITE equipment, luminaire and audio/video equipment. Apart from product specific standards we are also able to perform EMC tests according to the generic standards for light industrial (household) appliances and the generic standard for industrial appliances. Our technical competence ranges from DC until 40 GHz and from 3 V/m until 200 V/m. Experienced consultants from DARE!! Instruments can advise and thus enable you to improve your product during the test. In addition to standard EMC measurements DARE!! Consultancy performs a wide array of EMC tests in other fields. 

Click here for a list of harmonised standards.

Accredited

DARE!! Consultancy is accredited by the Dutch Council for Accreditation (RvA) under number L279, a Competent Body for the EMC Directive and a Conformity Assessment Body (CAB) in regard to the Mutual Recognition Agreement with the USA (MRA-USA). Besides this DARE!! Consultancy is a Notified Body for the Low Voltage Directive. In regard to the EMC Automotive measurements DARE!! Consultancy is a technical service of the RDW and AEMCLRP accredited by the American Automotive industry (e.g. General Motors, Ford, Chrysler).  

Other tests

Most standards under the EMC Directive cover a frequency band till 1 GHz. At this moment there are many sources of disturbance like a GSM (1.8 GHz), PC's, microwave ovens (2.4 GHz) and microwave transmitters that operate in access of this frequency. DARE!! Consultancy performs measurements up to 40 GHz. Immunity tests according to the product standards, which are harmonised under the EMC Directive, are prescribed for example 10 V/m for radiated immunity and 8kV for Electro Static Discharge (ESD). In certain environments it is advised to comply with higher immunity levels. DARE!! Consultancy can generate fields up to 200 V/m and ESD levels till 30 kV. In other areas like conducted immunity, EFT and Surge higher test levels can be achieved as well.

Generic Standards

Standard

Application

EN 61000-6-1

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

EN 61000-6-2

Electromagnetic compatibility (EMC) -- Part 6-2: Generic standards – Immunity for industrial environments

EN 61000-6-3

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

EN 61000-6-4

Electromagnetic compatibility (EMC) -- Part 6-4: Generic standards – Emission standard for industrial environments

EMC Standards

Basic Standard

Description

Bands / Limits

CISPR 11

Industrial, Scientific and Medical (ISM) radio-frequency equipment – Electromagnetic disturbance characteristics - Limits and methods of measurement

RE 30 MHz - 1.000 MHz CE 9 kHz - 30 MHz

CISPR 14-1

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

RE 30 MHz - 1.000 MHz CE 150 kHz - 30 MHz CE 30 MHz - 300 MHz

CISPR 16-2

Specification for radio disturbance and immunity measuring apparatus and methods – Part 2: Methods of measurement of disturbance and immunity

RE 30 MHz - 1.000 MHz CE 9 kHz - 30 MHz

CISPR 22

Information Technology Equipment (ITE) – Radio disturbance characteristics - Limits and methods of measurement

RE 30 MHz - 1.000 MHz CE 150 kHz - 30 MHz

EN 61000-3-2

Electromagnetic Compatibility - Part 3: Limits – Section 2: Limits for harmonic currents emissions

≤ 16 A

EN 61000-3-3

Electromagnetic Compatibility - Part 3: Limits – Section 3: Limitation of voltage fluctuations and flicker in low-voltage supply systems for equipment with rated current up to 16A

≤ 16 A

EN 61000-4-2

Electromagnetic Compatibility (EMC) - Part 4: Testing and measuring techniques - Section 2: Electrostatic discharge requirements up to 30 kV

≤ 30 kV

EN 61000-4-3

Electromagnetic Compatibility (EMC) - Part 4: Testing and measuring techniques - Section 3: Radiated, radio-frequency, electromagnetic field immunity test

26 MHz – 4.000 MHz, Up to 30 V/m

EN 61000-4-4

Electromagnetic Compatibility (EMC) - Part 4: Testing and measuring techniques - Section 4: Electrical fast transient/burst requirements

Up to 4,4 kV

EN 61000-4-5

Electromagnetic Compatibility (EMC) - Part 4: Testing and measuring techniques - Section 5: Surge immunity tests

Up to 6 kV

EN 61000-4-6

Electromagnetic Compatibility (EMC) - Part 4: Testing and measuring techniques - Section 6: Immunity to conducted disturbances, induced by radio-frequency fields

150 kHz – 230 MHz, till 30 Vrms or 100 mA

EN 61000-4-8

Electromagnetic Compatibility (EMC) - Part 4: Testing and measuring techniques - Section 8: Power frequency magnetic field immunity test till 100 A/m

≤ 100 A/m

EN 61000-4-11

Electromagnetic Compatibility (EMC) - Part 4: Testing and measuring techniques - Section 11: Voltage dips, short interruptions and voltage variations – immunity tests

 

Other Directives

Besides EMC measurements DARE!! Consultancy also performs measurements and examinations according to the following Directives: 

  • Low Voltage Directive (LVD)
  • Machine Directive
  • Automotive Directive 
  • Medical Device Directive
  • R&TTE Directive

Besides this measurements and examinations are performed in accordance to Military and FCC regulations.

Aside from full compliant measurements and examinations so called Quick Scans or engineering measurements (pre-compliant) can be performed. 

For more information about EMC Measurements you can use our contact form.

You can also call or email us. Please see the contact information above.