Electromagnetic compatibility tests
Electromagnetic compatibility tests
The first modern EMC laboratory in Romania
In order to develop activities in the field of testing, ICMET established the first modern laboratory in Romania for electromagnetic compatibility tests (CEM), designed to ensure electromagnetic compatibility for electrical and electronic equipment. The laboratory is the result of close cooperation between ICMET Craiova and the Physikalisch Technische Bundesanstalt (PTB) Braunschweig, Germany.
Currently, the immunity tests and conducted disturbance measurements performed by this laboratory are accredited by RENAR. In 2000, the semi-anechoic chamber was put into operation, the first of its kind in Romania.
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Download RENAR Accreditation Certificate (PDF)
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Download the Annex to the Accreditation Certificate (PDF)
Semi-anechoic chamber (SAC) from ICMET Craiova
Technical Features
Immunity according to EN 61000-4-3:
- In the measurement area (LxH=1.5×1.5 m) uniform field within imposed tolerance limits (0 dB, +6DB) for at least 75% in the area (12 of the 16 measurement points).
- Measuring distance: 3m
- The provisions of EN 61000-4-3 are guaranteed in the frequency range: 80MHz-18 GHz.
Radiated disturbances according to EN 55022: Pre-compliance
In the "dead" zone (diameter 1 m):
- 30-90MHz NSA: ±9.5dB
- 90-200MHz NSA: ±6.5dB
- 200-1GHz NSA: ±4dB
- 1-18GHz NSA: ±4dB
Technical solution
Shielded housing:
– construction made of 1.5 mm OL thin sheet welded in neutral atmosphere. Lined with absorption pyramids made of polyurethane foam impregnated with carbon particles fixed with acrylic adhesive resistant to temperatures up to 600 °C (30 sec) and stationary in electric fields up to 350V/m.
Geometric dimensions: 8 m x 4 m x 4 m
Dimensions of a typical room: 6,885 m x 2,680 m x 3,340 m
Absorbent types and sizes
Ceiling, side walls, back wall of the EUT
APM 66 610mm x 610mm x 660mm
The wall behind the antenna
APM 45 610mm x 610mm x 455mm
Room corners (flat absorber)
P75 1220mm x 610mm x 75mm
- Total weight of the absorber: 1500 Kg
- Fixing the absorber: non-flammable adhesive fastening
Absorber reflection level (dB): according to the table
| Frequency | 80MHz | 100MHz | 150MHz | 300MHz | 500MHz | 1GHz | 2GHz | 8GHz | 12GHz | >18GHz |
|---|---|---|---|---|---|---|---|---|---|---|
| APM45 | -1,5 | -3 | -8 | -22 | -28 | -33 | -36 | -48 | -49 | -53 |
| APM66 | -6 | -8 | -12 | -24 | -30 | -40 | -45 | -50 | -50 | -53 |
Image gallery
View from inside the semi-anechoic chamber
Access door detail
Control room
Immunity Tests
ELECTROSTATIC & RADIATED
| Standard | Tests | Description | Technical Data | Scope |
|---|---|---|---|---|
| ELECTROSTATIC DISCHARGE | ||||
| EN 61000-4-2 IEC 61000-4-2 |
 |
Electrostatic discharges | 8 kV (contact) 15 kV (air) |
Immunity of equipment subjected to static electricity discharges from operators directly or to adjacent objects |
| RENAR accredited | ||||
| RADIATED DISTURBANCES | ||||
| EN 61000-4-3 IEC 61000-4-3 |
 |
Radiated electromagnetic energy | 10 V/m (d=3 m) 80MHz – 3GHz 0 – 100% AM (1 kHz) |
Immunity of equipment subjected to radio-frequency electromagnetic fields |
| RENAR accredited | ||||
| 2004/104/EC ISO 11452-1,2,4,5 |
Immunity to electromagnetic radiation | Automotive electrical and electronic subassemblies (ESA) | ||
| RENAR accredited | ||||
| MIL-STD-461E RS101 |
Immunity to electromagnetic radiation | Electronic equipment and subsystems intended for military equipment | ||
| RENAR accredited | ||||
CONDUCTED DISTURBANCES
| CONDUCTED DISTURBANCES | ||||
| EN 61000-4-4 IEC 61000-4-4 |
 |
Electrical fast transient / burst | 4 kV max. 5 / 50 ns Impulses Variable frequency |
Immunity at transient disturbances, such as those originating from switching transients (interruption of inductive loads, relay contact bounce, etc.) |
| RENAR accredited | ||||
| EN 61000-4-5 IEC 61000-4-5 |
 |
Surge immunity tests | 4.5 kV/2.25 kA 1.2 / 50 µs 8 / 20 µs Impulses |
Immunity to unidirectional surges caused by over-voltages from switching and lightning transients |
| RENAR accredited | ||||
| EN 61000-4-6 IEC 61000-4-6 |
 |
Conducted disturbances, induced by radio-electric fields | 80 Veff 9kHz – 80MHz 80 % AM (1kHz) |
Immunity at conducted disturbances, induced by radio-electric fields, coming from intended RF transmitters |
| RENAR accredited | ||||
| EN 61000-4-8 IEC 61000-4-8 EN 61000-4-9 IEC 61000-4-9 |
 |
Power frequency and pulse magnetic fields | 50Hz 1-100 A/m 8/20 µs 1-1000 A/m |
Immunity at power frequency and pulse magnetic fields, generated by coils |
| RENAR accredited | ||||
| EN 61000-4-11 IEC 61000-4-11 |
 |
Voltage dips, short interruptions and voltage variations | 0 – 100 % UN 10000ms |
Immunity at voltage dips, short interruptions and voltage variations for electrical equipment not exceeding 16 A / phase |
| RENAR accredited | ||||
| EN 61000-4-12 IEC 61000-4-12 |
 |
Oscillatory waves | – 100kHz/4kV -0.1 and 1MHz/ 2.5kV |
Immunity at oscillatory waves for electrical and electronic equipment |
| in progress | ||||
| 2004/104/EC ISO 7637-1.2 ISO DIS 7637-3 IEC 60839-10-1 |
Immunity to transient disturbances | Automotive electrical and electronic subassemblies (ESA) | ||
| RENAR accredited | ||||
| MIL-STD-461E CS 101, 109, 114, 115, 116 |
Immunity to conducted disturbances | Electronic equipment and subsystems intended for military equipment | ||
| RENAR accredited | ||||
Emission Measurements
CONDUCTED DISTURBANCES
| standard | TESTING | Description | Technical data | field |
|---|---|---|---|---|
| CONDUCTED DISTURBANCES | ||||
| EN 55011 CISPR 11 – IEC |
 |
Electromagnetic disturbances at radio-frequency | 0.15 – 30 MHz | Measurement of radio-frequency disturbances for industrial, scientific and medical equipment |
| RENAR accredited | ||||
| EN 55014 CISPR 14 – IEC |
 |
Electromagnetic disturbances at radio-frequency | 0.15 – 30 MHz | Measurement for household appliances, electric tools, etc. |
| RENAR accredited | ||||
| EN 55015 CISPR 15 – IEC |
 |
Electromagnetic disturbances at radio-frequency | 0.15 – 30 MHz | Measurement for electrical lighting and similar equipment |
| RENAR accredited | ||||
| EN 55022 CISPR 22 – IEC |
 |
Electromagnetic disturbances at radio-frequency | 0.15 – 30 MHz | Measurement for information technology equipment |
| RENAR accredited | ||||
| EN 55014-1 CISPR 14-1-IEC |
 |
Discontinuous disturbances (clicks) | 148.5 kHz – 30 MHz | Measurement of discontinuous disturbances for household and similar equipment |
| RENAR accredited | ||||
| EN 55015 CISPR 15-IEC |
Insertion loss | Insertion loss | 150kHz – 1605kHz | Measurement of insertion loss for electrical lighting and similar equipment |
| RENAR accredited | ||||
| EN 55017 CISPR 17-IEC |
Insertion loss | Insertion loss | 10 kHz – 1000 MHz | Measurement of insertion loss of passive radio interference filters |
| RENAR accredited | ||||
| EN 61000 – 3 – 2 IEC 61000 – 3 – 2 |
 |
Harmonic current emissions | 100Hz – 2kHz (n=2 – 40) |
Measurement of Harmonics Emissions for non-professional equipment up to 16A/phase |
| RENAR accredited | ||||
| 2004/104/EC ISO 7637-1.2 EN 55025… |
Transient emissions measurement | Transient emissions measurement | Automotive electrical and electronic subassemblies (ESA) | |
| RENAR accredited | ||||
| MIL-STD-461E EC 101, 102 |
Conducted emission measurement | Conducted emission measurement | Electronic equipment and subsystems intended for military equipment | |
| RENAR accredited | ||||
| EN 61000 – 3 – 3 IEC 61000 – 3 – 3 |
 |
Voltage fluctuations and flicker emissions | Pst, Plt, dc, dmax | Measurement of voltage fluctuations and flicker for electronic equipment up to 16A/phase |
| RENAR accredited | ||||
RADIATED DISTURBANCES
| RADIATED DISTURBANCES | ||||
| EN 55011 CISPR 11 – IEC |
 |
Electromagnetic disturbances at radio-frequency | 0.15 – 1000 MHz | Measurement for industrial, scientific and medical equipment |
| In progress | ||||
| MIL-STD-461E RE 102,103 |
Measurement of radiated RF emissions | Measurement of radiated RF emissions | Electronic equipment and subsystems intended for military equipment | |
| ACCREDITED BY RENAR | ||||
| EN 55025 EN 55012 2004/104/EC |
Radiated emissions measurement | Radiated emissions measurement | Automotive electrical and electronic subassemblies (ESA) | |
| RENAR accredited | ||||
| 2004/40/EC 1999/513/EC |
Electromagnetic field measurement | Electromagnetic field measurement | Industrial (transformer stations) and residential (offices) environments | |
| RENAR accredited | ||||
| EN 55014-1 CISPR 14 – 1 – IEC |
 |
Electromagnetic disturbances at radio-frequency | 30 – 300 MHz | Measurement for motor-operated appliances (disturbance power) |
| RENAR accredited | ||||
| EN 55015 CISPR 15 – IEC |
 |
Measurements in three directions of magnetic field components | 0.09 – 30 MHz | Measurement of electromagnetic disturbance for electrical lighting and similar equipment |
| RENAR accredited | ||||
| EN 55022 CISPR 22 – IEC |
 |
Electromagnetic disturbances at radio-frequency | 30 – 1000 MHz | Measurement for information technology equipment |
| In progress | ||||
List of Equipment and Measuring Instruments within EMC Laboratory
Chambers, Receivers & Networks
| Semi-Anechoic Chamber 8 x 4 x 4 m; 3 m Measuring Distance |
10 V/m 80MHz – 1GHz |
| Measuring Screened Chamber 4 x 2 x 0.8 m |
> 80 dB Shielding Effectiveness |
| Screened Room 5725 x 2350 x 2625 mm |
> 120 dB Shielding Effectiveness |
| Helmholtz Coil System | 2,450mT |
| Electromagnetic Interference Receiver Type SMV 42, with internal power supply (battery unit) |
9 kHz – 2.6 GHz |
| Artificial Network Type NNB 41 |
9 kHz – 30 MHz |
| Absorbing Clamp Type AMZ 41 |
30MHz – 1GHz |
| Electric Field Meter Type EMR 20 |
100kHz – 3GHz |
| Three-phase Artificial Mains Network Type LT 32/C |
9kHz – 30MHz |
| Magnetic Field Analyzer Type EFA 1 |
5Hz – 30kHz |
| Broadband Hybrid Antenna Type HL 1000 |
20MHz – 1GHz |
Generators & Amplifiers
| Signal Generator Type SMY 02 |
9 kHz – 2.08 GHz |
| Power Meter Type NRVS |
DC – 26.5 GHz |
| Thermal Power Sensor Type NRV – Z 51 |
DC – 18 GHz |
| Dual Directional Coupler Type DC 3002 |
100 kHz – 1 GHz |
| Power Amplifier Type 100W1000M1 |
80MHz – 1GHz |
| Combination Wave Generator Type CWG 4 – 412 |
50 – 4500 V |
| Electrical Fast Transient Generator Type EFTG 4502 |
200 – 4400 V |
| Electrostatic Discharge Simulator Type ESDC 30 |
0 – 15 kV |
| Voltage Interruption Simulator Type VIS 700 |
0 – 280V |
| Generator/Amplifier/RFVoltmeter Type CDG 6000 |
100kHz-266MHz |
Analyzers & Accessories
| Transfer Field Strength Meter with µ-TEM Cell Type TFS 11 |
10MHz-1GHz |
| Electromagnetic Field Meter Type EnviroMentor |
0-1000 V/m 0.05-100 µT |
| Digital Oscilloscope Type TDS 524 A |
500MHz |
| Absorbing Clamp Type F-201 |
300MHz-1000MHz |
| Click analyzer Type CL 55C |
150kHz, 500kHz, 1.4MHz, 30MHz |
| Loop Antenna Type TLA300 |
9kHz-30MHz |
| Passive Probe Type HVP1/1000 |
9kHz-30MHz |
| Spectrum Analyzer Type FSH 3 |
100 kHz-3 GHz |
| Digital Multimeter Type Keithley 2000 |
100mV-1000V |
| Field Generator Type Ref. Rad 3000 |
1MHz-3GHz |
| Flicker & Harmonics Analyzer Type HAR 100-1P |
50Hz-2kHz |
| Near Field Sniffer Probes Type HZ 530 |
0.1MHz – 1GHz |
Responsible for testing:
Phone: 0351 404888; 0351 404889
FAX: 0351 404890
e-mail: cem@icmet.ro
Reference list:
Published works:
Conferences and Articles (2000 – 2002)
- A.Marinescu, Fl. Urzica, "Electric Field Calculation in the Measuring area of Semi-anechoic Chamber", EMC Workshop, Cagliari, Italy, May 2000
- A.Marinescu, A. Scornea, G.Mihai, I.Dumbrava,"Laboratory for the HF Electromagnetic Field Probes Calibration", International Conference METSIM '2002, Bucharest, June 2002
- I. Dumbrava, A. Marinescu, G. Mihai, A. Scornea, "Laboratory for Frequency Magnetic Field Probes Calibration", SICEM 2002, Bucharest, September 2002
- A. Marinescu, A. Scornea, "Some Aspects about the Measurement Uncertainties Calculation in EMC", SICEM 2002, Bucharest, September 2002
- I. Dumbrava, A. Marinescu, G. Mihai, "Software for Calibration Systems from an EMC Laboratory", SICEM 2002, Bucharest, September 2002
Conferences and Articles (2003 – 2005)
- A. Marinescu, A. Scornea, I. Dumbrava, G. Mihai (Romania), J. Glimm, K. Munter, R. Pape (Germany), "Antenna Field Calibration Laboratory for RF Electromagnetic Field Meters", The 2003 IEEE International Symposium on EMC, Istanbul, Turkey, May 2003
- A. Marinescu, I. Dumbrava, P. Nicoleanu, "Evaluation of Electric Equipment Conformity Regarding Current Harmonics and Flicker Level", SICEM 2003, Bucharest, September 2003
- A.Vintila, "Construction of Shielded Rooms", SICEM 2003, Bucharest, September 2003
- A.Marinescu, F.URZICA, "Numerical Modeling of Antennas Using FDTD", SICEM 2003, Bucharest, September 2003
- A.Marinescu, G.Mihai, P.Nicoleanu, "Study of magnetic field distribution in residential areas and methods to decrease population exposure", Scientific Paper Section with international participation Military Technical Academy, 3-4 November 2005, Bucharest
- A.Marinescu, G.Mihai, P.Nicoleanu, C.Vargatu, "Artificial Networks Used in Electromagnetic Compatibility", SICEM 2005, University "Politehnica" of Bucharest 21 September 2005
- A.Marinescu, G.Mihai, P.Nicoleanu, C.Vargatu, "Electromagnetic Compatibility of the Electrical Lighting Equipments", SICEM 2005, University "Politehnica" of Bucharest 21 September 2005
- A.Marinescu, A.Vintila, G.Mihai, "Shielded Room from Panels", SICEM 2005, University "Politehnica" of Bucharest 21 September 2005
