Electromagnetic Compatibility (EMC) Testing
Electromagnetic Compatibility (EMC) testing ensures that electronic equipment does not emit excessive electromagnetic interference (EMI) that may affect other devices, while maintaining proper operation when exposed to external electromagnetic disturbances (EMS). It is a fundamental requirement before products enter the market, covering two main aspects — emission and immunity. In critical sectors such as lighting, information technology, communications, medical devices, and power control systems, regulatory standards impose increasingly stringent and well-defined EMC requirements to ensure reliable and safe performance.
Testing Services
Test Items
- Conducted Emission
- Radiated Emission
- Electrostatic Discharge (ESD) Immunity
- Surge Immunity (Lightning Transient)
- Radiated Radio-Frequency Electromagnetic Field Immunity
- Power Frequency Magnetic Field Immunity
- Harmonic Current Emission Limitation
- Voltage Fluctuation and Flicker
Applicable Standards
- CNS 14115, CISPR 14, CISPR 15, CISPR 32, EN 61547, EN 55015, EN 55014, IEC 61000-4 series, IEC 61000-3 series
Reference Cases
- Lighting Fixtures: LED luminaires were tested in accordance with EN 55015, EN 61547, and EN 61000 standards. They passed both conducted and radiated emission limits and demonstrated strong immunity to electrostatic discharge (ESD), radio-frequency electromagnetic fields, and surge transients. The results verified effective reduction of harmonic current, voltage fluctuation, and flicker issues, ensuring stable operation without interference to other equipment and full compliance with CE marking requirements.
- Home Appliances: A cordless vacuum cleaner was tested under CISPR 14-1 international EMC standards, covering conducted and radiated emissions, and met Class B limits. Testing was performed by a certified third-party laboratory with full reporting, serving as verification for international retail brands and market entry compliance. The product fulfills EU CE certification and multiple national EMC regulations, demonstrating superior electromagnetic design and reliability.
- ICT Products: A router product successfully completed EMC certification testing based on CISPR 32 (emission) and IEC 61000-4 series (immunity) standards. Tests included conducted and radiated emissions, ESD, RF immunity, and surge resistance. It meets EMC regulatory requirements across EU (CE), Taiwan (NCC), and US (FCC) markets, ensuring stable operation and minimal interference in diverse networking environments.
- Fire Safety Equipment: Public address and alarm systems were tested according to CISPR 11 and EN 61000-4 series immunity standards. Results confirmed no harmful EMI emissions and reliable performance of alarm, communication, and control functions (EMS) even under high-interference environments, preventing malfunction during critical emergencies.