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Equipment compatibility in electromagnetism

 

The electromagnetic environment is composed of natural sources (solar ray, electric charge in atmosphere – storm, magmatic current) and of artificial sources: voluntary transmitter of radiofrequency waves, and involuntary transmitter with interference phenomenon link to every electrical device in use.

 

The electromagnetic compatibility is the capability of electrical or electronic equipment to work properly within its electromagnetic environment and without damaging this environment with electromagnetic disturbances

 

EMC tests describe :

  • the electromagnetic emission of a radiated equipment (electrical field, magnetic field) and of conducted equipment
  • the capacity to work as expected even with interferences : radiated immunity, conducted immunity, transient immunity, lightning (indirect), electrostatic discharge,…

By extension, EMC tests covers entire or parts of emission, immunity tests and various associated electrical tests: voltage changes or wavering, harmonic measures and flicker.

 

Our teams regularly travel in France and around the world for on-site investigations about EMC disturbances in which equipment may be faulty.

 

 

 

The context of emc tests

The IEC (International Electrotechnical Commission) as international standardization body for electrical, electronic and related engineering, coordinate the EMC standards evolution.

 

Most countries have set in place a regulation approach of the electromagnetic compatibility for equipment used in their territory in order to protect the frequency spectrum (See radio lab).

In many cases, these tests only concern emission (see USA / Canada markets) and their objective is to protect the electromagnetic spectrum (as well as its use by radiofrequency transmitters).

 

 

 


In Europe the 2004/108/EC directive is part of the CE marking. It sets the requirements for electromagnetic compatibility in emission and in immunity. Its aim is not only the frequency spectrum protection but also the electromagnetic compatibility of equipment within an environment.

This directive replaces the first European ones: EMC 89/336/EEC, in the frame of the CE marking and mandatory applicable since the 1st January 1996.

Harmonized standards are used in the most frequent conformity demonstration procedure. Their regular evolution shows movements in electronics and in the use of wireless technologies.
Keeping high level of tests capacities requires ongoing investment (as example, the first radiated immunity test applicable to electrical field in 1996 have a limit up to 500MHz and now test can reach 6GHz).

 

Outside Europe, our knowledge in terms of applicable regulation around the world allows us to inform you on the requirements to be followed by your product depending on the destination.

Our EMC labs can generally optimize test by doing tests campaign on the basis of the prescribe one's.

 

 

 

Tests realized within EMC labs in a certification context are different for the form and content from EMC qualification tests.

 

For the content, tests method and constraint levels are different because the electromagnetic context is not the same.

For the form, tests results are : for the first case, intended to a constitutional actor via an approval procedure (self-certification, certification,…) and in the second case, linked to a purchase procedure between private actors.

 

Within Emitech, our EMC labs for certification and qualification are generally located in the same centre as they are sharing most instrumentation. But the know-how of our team is validating separately in order to take care of the specifities of the two markets.

 

 

 

 

Standards and specifications treated*

European regulation

Directives EMC, R&TTE, Medical, ...

EMC standards

EN 55022 / EN 55011
(Standards and test method in emission)

EN 61000-4-(2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 16 et 17) (Test method immunity)

EN 61000-3-2 (Harmonics) / EN 61000-3-3 (Flickers)

EN 61000-6-(1 à 4) (Generic standards)

EN 55015 / EN 61547 (Luminaires)

EN 55013 (Sound and television broadcast receivers and associated equipment)

EN 55014-1&2 (Household appliances)

EN 55024 (Information technology equipments)

EN 61326 (Electrical equipment for measurement, control and laboratory use)

EN 60945 (Maritime navigation and radiocommunication equipment and systems)

EN 50270 (Electrical apparatus for the detection and measurement of combustible gases, toxic gases…)

EN 50130-4 (Alarm systems) / EN 60601-1-2 (Medical electrical equipment)

EN 12015 / EN 12016 (Lifts, escalator and passenger conveyors)

EN 50155 / EN 50121-3-2 / EN 50121-4 (Railway applications)

EN 50293 (Road traffic signal systems)

 

EMC radiocommunication standards

EN 301 489-(01, 03, 05, 07, 09, 12, 13, 15 et 22) and ETS associated standards

EN 300 339 / EN 300 385 / EN 300 386-2

 

 

Export markets

CISPR 22 / CISPR 11 / FCC PART 15 (USA) / ICES 03 (Canada)

AS/NSZ 3548, AS/NSZ 2064, AS/NSZ 1053 (Australia) / VCCI (Japan)

 

 

*Non exhaustive list, please contact-us for more information

Shielded room

 

 

 

 

Open space site

 

 

 

 

Lightning generator

 

 

 

 

Instrumentation

Part of this instrumentation is common with our EMC labs dedicated to qualification.

 

  • Emission DC - 40 GHz
    One test line by room and by open test site
    • 3 open test site (CISPR 16 ANSI 63.4 FCC Part 15) and 1 big size shielded room (15m x 10m x 7m) for measuring to 10m,
    • 8 shielded room for measuring to 3m,
    • Spectrum analyser, EMI receivers,
    • L.I.S.N. – Clamp current probes,
    • Magnetic loop and electrical field antennas.
  • Immunity 10 kHz to 40 GHz
    One immunity test line by room
    • 33 shielded rooms from which 8 complies with EN 61000-4-3,
    • Electric field - 30 V/m at 3m on the entire frequency range up to 50 V/m at 3m in the uniform field area from 9 kHz to 18 GHz and up to 600V/m at 1m),
    • Magnetic loop from 10 Hz to 150 kHz,
    • Injection voltage (EN 61000-4-6) from 10 kHz to 230 MHz,
    • AM, FM, pulsed and combined modulation.
  • Electrical tests
    A full range of means for test according to EN 61000-4-(2, 3, 4, 5, 6, 8, 9, 10, 11, ...) and EN 61000-3-(2 et 3)
    • Generator of transient surges, ESD, surge, voltage dips and interruptions immunity, ...
    • Harmonics and flickers measurement bay for single phase 15 kVA and three-phases 3 x 5 kVA power supplies, ...

 

 

 

 

Related links

CE marking
Marquage CE   Directive EMC 2004/108/EC

Emitech is notified for this directive and so offers you expert's services…. as well as its entire skills for your CE marking.

US market
Marché nord américain   EMC requirements of the FCC

Our open test site are recognised by north American authorities: FCC (USA) and Industrie Canada.

Export markets
Marchés Exports   Our know-how at your service
Tell us in which country you want to sell your product and we will guide you: information on standards and applicable procedures, carrying out test,...
EMC troubleshooting
Sites perturtés   We intervene in France and abroad
Electrical and electronic systems are sensitive to EMC phenomenon.
Our teams intervene in a short period to reproduce problems and solve them
Training
Formation   Intra and intercompany courses

More than half of our training concerns EMC and further subjects: regulation, measuring, design, quality,…

 

 

 

 

 

Vos contacts
 
Montigny centre
 
Switchboard: +33 (0)1 30 57 55 55
Mr TISSERAND Jean Luc
33 (0)1 30 57 87 14
Mr BOGA Jean-Charles
33 (0)1 30 57 87 16