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EMC Testing

We carry out EMC testing, ensuring devices comply with standards and market requirements.

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Comprehensive EMC testing for your devices

We deliver comprehensive electromagnetic compatibility (EMC) testing, from initial verification to final compliance tests. We help identify and eliminate sources of interference, supporting manufacturers in obtaining certificates and bringing devices to market.

Why use our EMC laboratory services?

Problem

Tests show emissions exceeding permissible levels or immunity that is too low. Can you help us find the root cause?

Solution

We analyse the sources of EMC issues and pinpoint their specific causes. Based on the test results, we recommend design modifications and improvements to filtering, shielding, and grounding. We support you throughout the entire process—from analysis, through verification of corrective actions, to achieving full compliance with the relevant standards and the EMC Directive.

Problem

During operation, my device causes interference with communication or nearby equipment. How can I eliminate it?

Solution

In our EMC laboratory, we locate sources of interference and determine their nature. We analyse how signals are emitted and the device design. Based on this, we recommend effective solutions: PCB modifications, adding filters, improving shielding, or changing cables. As a result, the device operates reliably without affecting other systems.

Problem

The device does not operate correctly during ESD, Burst, or Surge tests. How can I improve its immunity?

Solution

We carry out detailed tests and analyse the device’s behaviour under disturbance conditions. We identify the most vulnerable components and advise design changes—introducing galvanic isolation, filters, varistors, or shielding. We help optimise the design so it meets immunity requirements.

Problem

I’m at the prototype stage and would like to check early whether the product will pass EMC testing. Do you perform preliminary tests?

Solution

Yes, we provide pre-compliance testing that allows potential issues to be detected before final tests. This helps avoid costly post-production modifications. We help optimise the device design, eliminating weak points in emissions and immunity before ramp-up to series production.

Problem

An audit is approaching and I need an EMC report as soon as possible. Can you perform accelerated testing?

Solution

Yes, we offer flexible schedules and fast turnaround. If needed, we can carry out an initial assessment or partial testing to accelerate the certification process. Our team prioritises urgent projects, delivering reports as quickly as possible while maintaining full reliability of results.

Electromagnetic emissions testing

We perform comprehensive measurements of conducted and radiated emissions in accordance with EN 55032, EN 55011, EN 61000-6-3 and EN 61000-6-4. The tests determine whether the device generates interference that could affect other systems in its vicinity. Measurements are carried out using a GTEM cell, spectrum analysers and EMI receivers. We determine emission levels for radiated signals and conducted disturbances on power and signal lines. The results are interpreted by experienced specialists who identify possible sources of exceedances and recommend specific corrective measures.

Immunity testing

We check how the device responds to disturbances occurring in its real operating environment. Immunity testing is carried out in accordance with EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-8 and EN 61000-4-11. We test immunity to:

  • electrostatic discharges (ESD),
  • electrical fast transients (Burst),
  • surge voltages (Surge),
  • conducted and radiated RF disturbances,
  • voltage dips, short interruptions and variations of the supply voltage.

Our test setups allow us to simulate real conditions in a controlled manner and assess how the device behaves in the presence of different types of disturbances. Based on this, we can indicate components that require modification, filtering or improved shielding.

Reporting and post-test technical support

After completing the tests, we prepare full documentation compliant with the requirements of Directive 2014/30/EU (EMC). Reports include detailed measurement results, test setup configuration, references to standards, and a compliance interpretation. We also provide engineering support after testing—helping analyse the causes of non-compliance, select protective components, implement design changes, and prepare for re-testing. This way, the customer receives not only test results, but also practical guidance enabling effective implementation of design changes and achieving full EMC compliance for their devices.

Key figures

EMC standards included in our test plans

of reports with complete post-test documentation

years of experience in designing and manufacturing power supply devices

Our laboratory

GTEM cell for electromagnetic emission and immunity testing

Allows radiated emission measurements and immunity testing. Enables testing of devices with maximum dimensions of approximately 0.5 x 0.5 x 0.5 m, providing broad applicability in typical projects. By controlling the intensity and polarisation of the electromagnetic field, repeatable test conditions can be achieved and compliance with EMC standards assessed in a laboratory environment.

EFT/Burst generator

Designed for immunity testing of devices against electrical fast transients and disturbance pulses. It enables generation of stress levels with a maximum disturbance pulse value of 5.5 kV.
Used in testing compliant with EN 61000-4-4. Allows simulation of real disturbance conditions in electrical installations and control systems.

Surge generator

Enables immunity testing against overvoltages as well as voltage and current surges. It enables exposure of three-phase supply lines and unbalanced or balanced I/O lines with current rating up to 32 A, with a maximum test level of 7 kV using various coupling devices. Used in tests compliant with EN 61000-4-5. Simulates the effects of lightning discharges in power and signal networks.

Conducted disturbance generator

Enables immunity testing of devices against conducted disturbances on power and signal lines in accordance with EN 61000-4-6. Operates in the frequency range 9 kHz–1 GHz, enabling injection of test signals into various types of lines (AC/DC, balanced, unbalanced, shielded), with loads up to 100 A and voltages up to 600 V. The unit is equipped with 4 mm banana sockets, enabling quick and safe connection of the lines under test.

Electrostatic discharge (ESD) generator

Enables immunity testing of devices against electrostatic discharges. Compliant with EN 61000-4-2. Allows assessment of device behaviour under contact and air discharges.

Why perform EMC testing at MERAWEX

Expert consulting and technical support

We do more than test. Our engineers actively help resolve electromagnetic compatibility issues, ensuring a fast path to full compliance with standards.

Flexible and transparent testing process

We tailor the EMC test plan and methodology to your unique needs, offering full transparency and the option to actively participate in the tests.

Comprehensive approach to EMC testing

We provide a full scope of EMC tests — from requirements analysis to a detailed report — ensuring full device compliance.

See how we work together

Our EMC testing process in 5 steps

1

Requirements analysis and standards selection

We thoroughly understand your needs, identify the required standards, and define the scope of EMC testing necessary for your device.

2

Test plan and methodology

Together, we develop a detailed schedule and methodology, deciding how the tests will be carried out and how you will participate in the process.

3

Conducting EMC measurements and tests

We perform electromagnetic compatibility tests according to the agreed schedule and procedures.

4

Technical support and consultancy

If any non-compliances are detected, we provide expert support and advise the best available technical solutions.

5

Test report preparation

We prepare a detailed report containing complete results, analysis and a clear assessment of the tested device’s compliance.

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What do you gain by choosing our services?

Designer

You gain access to an experienced team of engineers and laboratory facilities that allow you to test a prototype already at the design stage. We support verification of compliance with EMC requirements, analysis of results and selection of optimal design solutions. This helps eliminate the risk of costly corrections after the project is completed and enables faster time-to-market.

Manufacturer

We offer comprehensive support in testing products before certification and during serial production. Our EMC testing helps detect potential emission or immunity issues and effectively eliminate them. We provide reliable reports, documentation and technical consultations that make it easier to prepare devices for testing at notified bodies and increase their reliability.

Distributor

With our testing, you can be confident that the devices you offer meet applicable EMC requirements and are safe to use. We help assess the compliance of supplied products and prepare reports and technical analyses. Our support reduces the risk of claims and increases the credibility of your offer in the professional electronic systems market.

Solutions tailored to your needs

We specialise in designing and delivering dedicated power supplies that serve as integral components of systems across various industrial sectors. We support our customers in selecting the optimal power solution, precisely tailored to the application specifics and budget assumptions.

Fire protection

Certified fire power supplies compliant with EN 54-4 and EN 12101-10, providing reliable power for fire protection and building safety systems.

Telecommunications

Floating-operation power supplies and telecommunication power systems, 48 V DC and 230 V AC, intended for telecommunications and data transmission systems, ensuring continuity of operation and high infrastructure reliability.

Power engineering

Dedicated power supplies for telecommunication and protection systems, and guaranteed power solutions with digital communication, ensuring stable voltage and full control of device operation.

Industry

Floating-operation power supplies intended for integration and operation with other industrial devices, ensuring stable and reliable power in industrial applications.

Consult your needs with the MERAWEX team

Do you have a project that requires technical, production or R&D support? Tell us about your needs – we will find the best solution together and propose a concrete action plan.

  • 1

    After receiving your enquiry, we will contact you by phone or email – usually within one business day.

  • 2

    Your enquiry will be forwarded to the appropriate specialist, who will clarify the requirements and propose a tailored solution.

  • 3

    If needed, we will conduct additional technical consultations.

  • 4

    We treat every enquiry individually, so our response will be tailored to the specific issue.

  • 5

    Submitting the form does not involve any obligations or costs on your side.

Frequently asked questions about testing

We test a wide range of devices: electronic and electrical equipment, controllers, power supplies, automation systems, telecommunications equipment, industrial devices and fire-protection equipment. We perform tests for both prototypes and finished products intended for domestic and international markets.

We perform tests in accordance with the requirements of EN 55032, EN 55035, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-8, EN 61000-4-11 and other related electromagnetic compatibility standards. The scope, test levels and detailed requirements depend on the device’s characteristics and intended use.

Yes. You can commission a complete test package or only selected tests—e.g., radiated emissions, conducted disturbances, ESD immunity, surges or electrical fast transients—depending on the project’s needs.

Yes. After the tests we prepare a detailed report containing measurement results, charts, compliance analysis against standards and recommendations for any product modifications needed to meet electromagnetic compatibility requirements.

Yes. We provide technical support with device configuration, cable connections, load selection and operating conditions so that the tests are representative and reflect real operating conditions.

Yes. We analyse test results and help identify the causes of non-compliance. We indicate possible design or circuit solutions that will allow the EMC requirements to be met in subsequent tests.

Additional information on EMC testing

  • General Terms and Conditions of Sale and Warranty

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