EMC Laboratory
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1. Introduction to EMC Testing
An electromagnetic compatibility laboratory is designed specifically for EMC testing. Electromagnetic compatibility is the ability of systems and subsystems to operate normally in their electromagnetic environments without performance degradation caused by interference. To verify EMC design, the development process must assess emissions from interference sources, transmission characteristics and the ability of equipment to withstand interference, confirming compliance with relevant EMC standards and specifications.
2. GTG EMC Laboratory
GTG has established comprehensive EMI and EMS capabilities in South China. The EMC laboratory includes one 10 m anechoic chamber, four 3 m anechoic chambers, and five shielded rooms and EMS immunity rooms. The 10 m chamber and one 9 × 6 × 6 m chamber meet medical equipment EMC testing requirements. Maximum voltage and current reach 380 V / 200 A (three-phase) and 1,000 V / 200 A (DC). Broad capabilities and accurate measurements support EMC compliance and pre-compliance testing for CE, FCC, VCCI and other markets.
3. EMC Certification Services
Americas: FCC SDoC, FCC ID, ICES, ISED ID and more;
Europe: CE-EMC and more;
Asia: CCC, CQC, BSMI, KC, VCCI, PSE and more;
Australia: C-Tick, RCM and more;
4. EMC Test Items
EMC testing includes electromagnetic interference (EMI) and electromagnetic immunity (EMS). EMC standards require electrical and electronic equipment to meet limits for radiated and conducted emissions, as well as requirements for radiated and conducted immunity.
(1) EMI testing, including CE and RE, measures conducted and radiated emissions from electrical and electronic products and equipment, and evaluates interference transfer characteristics during signal transmission.
(2) EMS testing, including CS and RS, primarily covers:
1. Radiated immunity to electric and magnetic fields;
2. Conducted immunity to interference injected into power, control, signal and grounding lines;
3. Immunity to electrostatic discharge and transient disturbances, including surges and electrical fast transients.
5. EMC Testing Standards
|
Product Category |
CISPR/IEC Standards |
European Standards |
US/Canadian Standards |
Australian Standards |
Chinese Standards |
Korean Standards |
Japanese Standards |
|
Information Technology / Audio-Video |
CISPR 32 |
EN 55032 |
FCC PART 15B |
AS/NZS CISPR 32 |
GB/T 9254.1 |
KS C 9832 |
V-3 |
|
Lighting |
CISPR 15 |
EN 55015 |
FCC PART 15B |
AS CISPR 15 |
GB/T 17743 |
KS C 9815 |
J 55015(H29) |
|
Household Appliances |
CISPR 14.1 |
EN 55014-1 |
FCC PART 15B |
AS CISPR 14.1 |
GB 4343.1 |
KS C 9814-1 |
J 55014 |
|
Industrial, Scientific and Medical Equipment |
CISPR 11 |
EN 55011, |
FCC PART 18 |
AS CISPR 11 |
GB 4824 |
KS C 9811 |
J 55011 |
|
Batteries |
IEC 61000-6-1 |
EN 61000-6-1 |
FCC PART 15B |
AS/NZS 61000.6.1 |
GB/T 17799.1 |
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6. EMC Laboratory Facilities
|
Testing Facilities |
Test Item |
Standard |
Remarks |
|
3 m Fully Anechoic Chamber |
Radiated Emissions |
GB4824-2004(CISPR11-2003) GB9254-2008(CISPR22-2006) |
30MHz |
|
Radiated Immunity |
GB17626.3-2006(IEC61000-4-3:2002) |
80MHz |
|
|
Shielded Room for Conducted Immunity Measurements |
Electrical Fast Transient/Burst Immunity |
GB17626.4 |
Up to 7 kV |
|
Immunity to Conducted Disturbances Induced by RF Fields |
GB17626.6 |
Up to 30 V |
|
|
Insertion Loss Testing for Electrical Lighting and Similar Equipment |
GB17743 |
9KHz-30MHz |
|
|
Radiated Electromagnetic Disturbance Testing for Electrical Lighting and Similar Equipment |
GB17743 |
||
|
Shielded Room for Harmonics and Flicker Measurements |
Harmonic Current Emissions |
GB17625.1-2012(IEC 61000-3-2:2009) GB17625.6-2003(IEC 61000-3-4:1998) GB17625.7-2013 |
Up to 75 A |
|
Voltage Changes, Fluctuations and Flicker |
GB17625.2-2007(IEC 61000-3-3:2005) GB17625.3-2000(IEC 61000-3-5:1994) |
Up to 100 A |
|
|
AC Power Port Harmonic Immunity |
GB17626.13-2006(IEC 61000-4-13:2002） |
Up to 100 A |
|
|
Voltage Fluctuation Immunity |
GB17626.14-2005(IEC 61000-4-14:2002) |
Up to 100 A |
|
|
DC Ripple Immunity |
GB17626.17-2005(IEC 61000-4-17:2002) |
Up to 100 A |
|
|
Three-Phase Voltage Unbalance |
GB17626.27-2006(IEC 61000-4-27:2000) |
Up to 100 A |
|
|
Power-Frequency Variation Immunity |
GB17626.28-2006(IEC 61000-4-28:2001) |
Up to 100 A |
|
|
Voltage Dips, Short Interruptions and Variations Above 16 A |
GB17626.34-2012(IEC 61000-4-34:2009) |
Up to 100 A |
|
|
Voltage Dips, Short Interruptions and Variations at DC Power Input Ports |
GB17626.29-2006(IEC 61000-4-29:2000) |
Up to 100 A |
|
|
Shielded Room for ESD Measurements |
Electrostatic Discharge Immunity |
GB17626.2-2006(IEC 61000-4-2:2001) |
Up to 30 kV |
|
Voltage Dips, Short Interruptions and Variations |
GB17626.11-2008(IEC 61000-4-11:2004) |
Up to 100 A; power interruption (0–100%) |
|
|
Low-Frequency Common-Mode Conducted Immunity |
GB17626.16-2007(IEC 61000-4-16:2002） |
Disturbance Levels up to 30 V |
|
|
Shielded Room for Transient Immunity Measurements |
Surge Immunity |
GB17626.5-2008(IEC 61000-4-5:2005) |
Up to 10 kV |
|
Damped Oscillatory Magnetic Field Immunity |
GB17626.10-1998(IEC 61000-4-10:1993) |
Up to 3 kV; three-phase 440 V / 100 A; |
|
|
Oscillatory Wave Immunity |
GB17626.12-1998(IEC 61000-4-12:1995) |
Up to 3 kV; three-phase 440 V / 100 A |
|
|
Power-Frequency Magnetic Field Immunity |
GB17626.8-2006(IEC 61000-4-8:2001) |
Up to 1,000 A/m for Short Durations |
|
|
Pulse Magnetic Field Immunity |
GB17626.9-2011(IEC 61000-4-9:2001) |
Up to 2,000 A/m |