Harmonic Current Emissions Testing (IEC 61000-3-2)
Harmonic current emissions testing measures the distortion your product introduces to the AC power supply. Compatible Electronics provides IEC 61000-3-2 harmonic testing required for CE marking and international market access.
What is Harmonic Current Testing?
Non-linear loads like switch-mode power supplies draw current in pulses rather than smooth sine waves. This creates harmonic frequencies that pollute the power grid, potentially causing problems for other equipment. IEC 61000-3-2 sets limits on these harmonic currents.
Equipment Classifications
Class A
- Balanced three-phase equipment
- Household appliances (excluding Class D)
- Tools, dimmers, audio equipment
- All other equipment not in B, C, or D
Class B
- Portable tools
- Handheld during normal operation
Class C
- Lighting equipment
- Including dimmers for lighting
Class D
- Personal computers and monitors
- TV receivers
- Input power 75W to 600W
Testing Requirements
Harmonic Currents 2nd Through 40th Order
Single-Phase Equipment ≤16A Per Phase
Phase Angle Measurements
Power Factor Calculations
Total Harmonic Distortion (THD) Analysis
Standards We Test To
IEC / EN Standards
- IEC 61000-3-2 (all editions)
- EN 61000-3-2 - European Harmonized Standard
- KS C 9610-3-2 - Korea Standard
- National variations and amendments
Test Conditions
⚡
230V, 50 Hz
Reference supply voltage
📊
Stable Power Source
Low impedance supply
⚙️
Normal Operation
Product under typical conditions
🔄
Multiple Modes
If applicable to product
Common Causes of Failures
✕
Poor power factor correction (PFC)
✕
Inadequate input filter design
✕
High-current pulse loads
✕
Missing or malfunctioning PFC circuit
Get Started Today
Need harmonic current testing? Contact us for a quote.
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