Electromagnetic Compatibility Testing

With the increasing popularity of electronic technology, there are more and more sources of interference in the electromagnetic environment. The electromagnetic compatibility (EMC) issues of products have received high attention from governments and manufacturers worldwide. In order to regulate the EMC of electronic products, developed countries and some developing countries have jointly established EMC standards. This also means that electronic products must undergo EMC testing during the R&D phase and improve their electromagnetic compatibility performance based on the test results to meet the corresponding EMC standards, thereby gaining enough competitiveness to be recognized by the external market.

China JJR Laboratory is a third-party EMC electromagnetic compatibility testing organization accredited by CNAS. The laboratory is qualified and capable of providing EMC testing services for products such as lighting fixtures, home appliances, power tools, and electronic electrical equipment. Services include EMC electromagnetic compatibility testing, preliminary EMC testing, EMC rectification, and emc certification.

What is EMC Testing?

EMC testing, also known as electromagnetic compatibility testing, refers to a comprehensive assessment of an electronic product's electromagnetic interference (EMI) and electromagnetic susceptibility (EMS). It is one of the most important quality indicators for a product. The EMC measurement is conducted through test facilities and instruments.

The purpose of EMC testing is to detect the electromagnetic radiation generated by electrical products and its effects on humans, public power grids, and other normal working electrical products. EMC testing is divided into two major categories:

- Electromagnetic Interference (EMI) Testing: Testing the emission of interference from electronic product systems to other devices and electromagnetic space.

- Electromagnetic Susceptibility (EMS) Testing: Testing the ability of electronic devices to resist electromagnetic interference from the surrounding environment.

Why is EMC Testing Necessary?

1. Product certification requirements: EMC certification is required for CCC, CE, FCC, UL product certifications, and corresponding EMC certificates must be obtained.

2. Market demand: Manufacturers need an EMC test report to purchase products or gain extra points in bidding when an EMC test report is included.

3. Verifying product reliability and expanding product visibility.

4. The need for national scientific research project approvals.

EMC Testing Items

EMS Immunity Tests: Electrostatic Discharge (ESD), Radiated Immunity, Burst, Surge, Conducted Immunity, Power Frequency Magnetic Field, Voltage Dips, Pulsed Magnetic Field, Damped Oscillatory Magnetic Field, Ringing Wave, Oscillatory Wave, Power Line Harmonic Immunity, etc.

EMI Emission Tests: Conducted Emissions, Radiated Emissions, Harmonic Currents, Voltage Flicker, etc.

EMC Testing Product Range

UK TESTING & CERTIFICATION

1. IT (Information Technology)

- EMC Standard: EN 55022/EN 55024

- Common Products: Personal computers, telephones, scanners, routers, cash registers, printers, adding machines, calculators, cash tills, copiers, data circuit terminals, data pre-processing devices, data processing devices, data terminal devices, dictation equipment, shredders, photocopiers, power adapters, computer power supplies, digital cameras, etc.

2. AV (Audio-Visual)

- EMC Standard: EN 55013/EN 55020

- Common Products: Speakers, audio and video teaching equipment, projectors, video cameras and monitors, amplifiers, DVDs, turntables, CRT and LCD TVs, recorders, radios, etc.

3. Home Appliances

- EMC Standard: EN 55014-1/EN 55014-2

- Common Products: Electric kettles, electric heaters, meat grinders, juicers, blenders, microwave ovens, solar water heaters, home fans, disinfection cabinets, air conditioning compressors, refrigerators, range hoods, gas water heaters, etc.

4. Lighting Fixtures

- EMC Standard: EN 55015/EN 61547

- Common Products: Tubes, bulbs, tunnel lights, industrial lights, street lights, fluorescent lights, table lamps, floor lamps, ceiling lights, wall lights, electronic ballasts, lampshades, ceiling spotlights, cabinet lighting, light strips, etc.

5. Medical Devices

- EMC Standard: YY0505:2012

- Common Products: Radiation therapy machines, ECG machines, analyzers, ozone therapy machines, vapor therapy machines, ultraviolet light therapy machines, spectroscopic therapy machines, RF combined therapy machines, ultrasonic nebulizers, etc.

Testing Capabilities

1. Radiated Emissions RE (> 1GHz)

2. Radiated Emissions RE (< 1GHz)

3. Conducted Emissions CE

4. Harmonics & Voltage Flicker

5. Electrostatic Discharge (ESD)

6. Radiated Immunity RS

7. Electrical Fast Transient (EFT/B)

8. Surge

9. Conducted Immunity CS

10. Power Frequency Magnetic Field (PMF)

11. Voltage Dips

12. OTA (TRP/TIS)

Capabilities and Advantages

The laboratory operates according to international standards ISO/IEC17025 and complies with over 10 international and domestic standard regulations.