Elektrotechnicky zkusebni ustav, s.p. (EZU)
Prague 8, Prague, Czech Republic
+420 266 104 111Pod lisem 129/2, Troja, Prague 8, Prague, 182 00, Czech Republic
About
Elektrotechnicky zkusebni ustav, s.p. (EZU / Electrotechnical Testing Institute) is a Czech state enterprise founded in 1926 and celebrating its centenary in 2026, based at Pod lisem 129/2 in the Troja district of Prague 8 under the founding competence of the Czech Ministry of Industry and Trade. It operates as EU Notified Body 1014, Czech Authorised Body 201, and CIA-accredited testing laboratory No. 1056 to CSN EN ISO/IEC 17025:2018 (current accreditation certificate 67/2026), alongside an accredited product and management system certification body and an accredited metrological laboratory. EZU joined the European CEE electrical safety scheme in 1961 and is the only IECEE CB Scheme certification authority in the Czech Republic; it is also an ETICS member entitled to operate the ENEC, ENEC+, HAR, CCA, CCA-EMC and KMK European schemes, and is commissioned to type-approve motor vehicles, their systems, components and separate technical units under EC and UNECE regulations using the Czech E8 mark. The EMC laboratory measures conducted disturbance from 9 kHz to 130 MHz across a range of artificial mains networks including motor vehicle accessory setups, radiated disturbance from 9 kHz to 18 GHz, disturbance power from 30 to 1000 MHz, and offers frequency analysis from 2 Hz to 22.5 GHz. Immunity coverage includes ESD, RF fields with various modulation schemes, conducted RF, fast transient bursts, surge, supply voltage fluctuation and interruption, mains effects (harmonics and flicker), magnetic field measurement, continuous magnetic fields and pulsed magnetic fields. The accredited scope is unusually deep and crosses several sectors in one building: generic and product-family EMC standards (EN 55011, 55014-1/-2, 55015, 55020, 55024, 55032, 55103-2, the EN 61000-3 and 61000-4 series, EN 61000-6-1 to -6-4), railway rolling stock and signalling (EN 50121-3-2, EN 50121-4, EN 50155, EN 50293), medical devices (EN 60601-1-2 editions 2 to 4 and a long list of 60601-2-xx particular standards), lifts (EN 12015/12016), drives (EN 61800-3), alarm systems (EN 50130-4), radio equipment (ETSI EN 301 489-1/-3, EN 300 220, EN 300 330, EN 300 339) and vehicle EMC (UNECE Regulation 10, 72/245/EEC). Environmental, IP ingress, flammability, acoustic noise, cable and electrical safety testing sit in the same accreditation, and equipment can be hired for customers to run their own tests on EZU premises under laboratory supervision.
Accreditations
| Accreditation |
|---|
| ISO/IEC 17025 |
| ISO/IEC 17065 |
| IECEE CB Scheme |
| EMC Directive 2014/30/EU |
Testing Services
| Test Type | Applicable Standards |
|---|---|
| Radiated Emissions | CISPR 32, EN 55032, EN 55011, EN 55014-1, EN 55015, EN 55016-2-3, 9 kHz - 18 GHz |
| Conducted Emissions | EN 55011, EN 55014-1, EN 55015, EN 55032, 9 kHz - 130 MHz |
| Radiated Immunity | EN 61000-4-3, EN 55024, EN 55014-2, EN 55020, EN 61000-6-1, EN 61000-6-2 |
| Conducted Immunity | EN 61000-4-6, EN 55024, EN 55014-2, EN 61000-6-1, EN 61000-6-2 |
| ESD | EN 61000-4-2 |
| EFT/Burst | EN 61000-4-4, EN 61000-4-18 |
| Surge Immunity | EN 61000-4-5, EN 61000-4-12 |
| Harmonics & Flicker | EN IEC 61000-3-2, EN 61000-3-3, EN 61000-3-11, EN 61000-3-12, EN 61000-4-7 |
| Voltage Dips/Interrupts | EN 61000-4-11, EN 61000-4-29, EN 61000-4-17, EN 61000-4-28 |
| Power Frequency Magnetic Field | EN 61000-4-8, EN 61000-4-9, EN 61000-4-10 |
| Medical Device EMC | EN 60601-1-2 ed. 2/3/4, IEC 60601-1-2, EN 61326-1 |
| Railway EMC | EN 50121-3-2, EN 50121-4, EN 50155, EN 50293 |
| Automotive Component EMC | UNECE Regulation 10, 72/245/EEC, 97/24/EC ch. 8 |
| Automotive Vehicle-Level EMC | UNECE Regulation 10, 72/245/EEC, E8 type approval |
| Radio Equipment Testing | ETSI EN 301 489-1, ETSI EN 301 489-3, ETSI EN 300 220-1/-2, ETSI EN 300 330-1/-2, EN 300 339 |
| Pre-Compliance Testing | Development and partial testing to client specification, Equipment hire with laboratory supervision |
| Environmental Testing | EN 60068-2-1, EN 60068-2-2, EN 60068-2-5, EN 60068-2-14, EN 60068-2-30, EN 60068-2-38, EN 60068-2-52, EN 60068-2-78, EN 60529, EN 62262, EN ISO 9227 |
| Mechanical Testing | EN 60068-2-6, EN 60068-2-64, EN 60068-2-27, EN ISO 3744, EN ISO 7779, EN ISO 11201 |
| Product Safety | Low Voltage Directive 2014/35/EU, EN 60335-1, EN 61010-1, EN 60598-1, EN 60950-1, EN 60601-1, EN 61558-1, EN 60947-1, EN 61439-1, EN 60825-1 |
Certifications / Marks
| Certification |
|---|
| CE |
| CB Certificate (IECEE) |
| ENEC |
| ENEC+ |
| HAR |
| CCA |
| CCA-EMC |
| KMK |
| ESC License |
| EZU Certificate |
| E8 Homologation |
| Notified Body 1014 |
| Czech Authorised Body 201 |
| EPD Verification |
| eIDAS |
Industries Served
| Industry |
|---|
| Automotive |
| Consumer Electronics |
| Energy & Power |
| Household Appliances |
| Industrial Equipment |
| Information Technology |
| Lighting Products |
| Medical Devices |
| Multimedia |
| Radio & Wireless |
| Railway |
| Telecommunications |
Major Equipment
| Equipment |
|---|
| EMC test chamber |
| EMI receivers 9 kHz-18 GHz |
| Spectrum analysis 2 Hz-22.5 GHz |
| Artificial mains networks / LISN (incl. automotive) |
| Absorbing clamp 30-1000 MHz |
| ESD simulator |
| EFT/burst generator |
| Surge generator |
| Conducted RF immunity system |
| RF field generators with AM/PM modulation |
| Magnetic field coils (continuous and pulsed) |
| Harmonics and flicker analyser |
| Voltage dip and interruption simulator |
| Climatic and thermal shock chambers |
| Salt spray chamber |
| IP ingress protection rigs |
| Acoustic noise test room |
| Vibration and shock equipment |
| Flammability / glow wire benches |
| Cable testing laboratory |
| Accredited metrology and calibration laboratory |
