Harmonic and Flicker Signal Source for IEC 61000-3-2 / IEC 61000-3-3 System Verification
The Harmonic and Flicker Signal Source provides repeatable harmonic load patterns and controlled flicker disturbances for verifying harmonic and flicker measurement systems used in IEC 61000-3-2 and IEC 61000-3-3 testing. HFG04 supports steady-state and fluctuating multi-harmonic loads together with 1 Hz and 8.33 Hz flicker modes, making it suitable for routine system verification, troubleshooting and performance monitoring in EMC laboratories.
- Model: HFG04
- Primary Use: Verification of harmonic and flicker analyzers and measurement systems
- Harmonic Reference: IEC / EN 61000-3-2, GB/T 17625.1
- Flicker Reference: IEC / EN 61000-3-3, GB/T 17625.2
- Harmonic Modes: Steady-state and fluctuating multi-harmonic load modes
- Harmonic Range: Up to the 40th harmonic, 50 Hz to 2 kHz
- Flicker Modes: 1 Hz and 8.33 Hz disturbance modes
- Device Power: DC 12 V, 2 A
- Dimensions: 160 × 330 × 250 mm
- Weight: 5.2 kg
- Typical Users: EMC laboratories, calibration and certification laboratories, and manufacturers operating in-house harmonic and flicker test systems
Harmonic and Flicker Signal Source
Product Overview
A Harmonic and Flicker Signal Source gives a laboratory a repeatable electrical condition for checking whether an existing harmonic or flicker measurement system continues to respond consistently.
For harmonic verification, HFG04 produces controlled multi-harmonic load currents. The connected measurement system captures the resulting current waveform and harmonic spectrum, allowing engineers to compare the response with an established baseline or another system.
For flicker verification, HFG04 creates repeatable load disturbances at 1 Hz and 8.33 Hz. The connected flickermeter measures the resulting voltage changes, Pst and Plt response.
HFG04 is therefore used to verify the measurement system, rather than replace the harmonic analyzer or flickermeter used for DUT compliance testing. Its compact 160 × 330 × 250 mm enclosure and 5.2 kg weight make it suitable for routine laboratory verification and comparison work.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Harmonic and Flicker Signal Source |
| Model | HFG04 |
| Primary Function | Harmonic and flicker measurement-system verification |
| Harmonic Mode 1 | Steady-state multi-harmonic load current |
| Harmonic Mode 2 | Multi-harmonic load current fluctuating between two load conditions |
| Maximum Harmonic Order | 40th harmonic |
| Harmonic Frequency Range | 50 Hz to 2 kHz |
| Flicker Disturbance Rates | 1 Hz and 8.33 Hz |
| Device Power Supply | DC 12 V, 2 A |
| Test Power Input | Dual T5A fused input with switch |
| Dimensions | 160 × 330 × 250 mm |
| Weight | 5.2 kg |
| Harmonic Standard References | IEC / EN 61000-3-2; GB/T 17625.1 |
| Flicker Standard References | IEC / EN 61000-3-3; GB/T 17625.2 |
How the Harmonic and Flicker Signal Source Works
HFG04 provides separate harmonic and flicker verification modes within one instrument.
01
Harmonic System Verification
In harmonic mode, HFG04 acts as a controlled nonlinear load and produces current containing multiple harmonic components.
↓
Harmonic Measurement System
↓
Harmonic Spectrum
The same operating condition can be repeated to check analyzer response, harmonic-current readings and spectrum consistency without relying on an unknown DUT.
The harmonic capability extends through the 40th harmonic, covering the stated range from 50 Hz to 2 kHz.
02
Flicker System Verification
In flicker mode, HFG04 creates controlled periodic load changes that produce voltage disturbances in the test supply.
↓
Flickermeter
↓
Pst / Plt Response
Two disturbance rates are available:
8.33 Hz
The different disturbance rates provide distinguishable conditions for confirming that the connected flicker measurement system responds consistently as the load pattern changes.
Verification Modes
Steady-State Load
Provides a fixed multi-harmonic load condition for repeatability checks, harmonic-current comparison and stable baseline verification.
Fluctuating Load
Changes between two load conditions to check whether the measurement system tracks dynamic harmonic-current changes consistently.
1 Hz Disturbance
Produces a repetitive load disturbance at one cycle per second for checking voltage-fluctuation and flicker response.
8.33 Hz Disturbance
Provides a faster periodic disturbance that produces a different flicker response for comparison with the 1 Hz condition.
Typical Verification Examples
The following values illustrate how different HFG04 modes can produce distinct measurement-system responses. They are application examples, not fixed guaranteed HFG04 output specifications.
Harmonic Verification Examples
HARMONIC SS
Steady-State
1.977 A
136.8%
2.483 A
0.420
IEC 61000-3-2:2018/AMD1:2020 Class A example. The recorded system result was Fail, demonstrating a deliberately distinguishable harmonic verification condition.
HARMONIC FLUCT
Fluctuating
1.844 A
62.4%
4.122 A
0.752
IEC 61000-3-2:2018/AMD1:2020 Class A example. The changing load produces a different harmonic-current pattern for dynamic system verification.
Flicker Verification Examples
1 Hz Disturbance
Example: Pass
| Vrms | 229.18 V |
| Highest dmax | 1.25% |
| Pst | 0.839 |
| Plt | 0.366 |
8.33 Hz Disturbance
Example: Pst Fail
| Vrms | 227.35 V |
| Highest dmax | 0.74% |
| Pst | 1.384 |
| Plt | 0.605 |
Typical Laboratory Use
Intermediate System Checks
Repeat an established HFG04 condition between formal calibration intervals to monitor measurement-system consistency.
After Maintenance or Changes
Compare system response before and after analyzer repair, software updates, hardware replacement, wiring changes or relocation.
Troubleshooting Unexpected Results
Check whether an abnormal DUT result is accompanied by a change in the measurement system’s response to a known HFG04 condition.
Long-Term Performance Monitoring
Record the response to the same verification mode over time to identify changes between calibration events.
Cross-System Comparison
Apply the same harmonic or flicker condition to different measurement systems to investigate differences under controlled conditions.
Applicable Standards and Measurement Scope
IEC 61000-3-2
IEC 61000-3-2 specifies limits for harmonic current emissions from electrical and electronic equipment with rated input current up to and including 16 A per phase.
The current consolidated publication incorporates IEC 61000-3-2:2018, Amendment 1:2020 and Amendment 2:2024, with the applicable Interpretation Sheet.
↓
IEC 61000-3-2 Measurement System
↓
Response Check
HFG04 supports verification of the measurement system; it does not replace the harmonic analyzer used to evaluate DUT compliance.
IEC 61000-3-3
IEC 61000-3-3 addresses voltage changes, voltage fluctuations and flicker from equipment with rated current up to 16 A per phase and not subject to conditional connection.
The current consolidated publication incorporates IEC 61000-3-3:2013, Amendment 1:2017 and Amendment 2:2021, with the applicable Interpretation Sheet.
↓
IEC 61000-3-3 Measurement System
↓
Response Check
HFG04 provides controlled flicker conditions for checking measurement-system response. Confirm the applicable national adoption and edition when a specific laboratory procedure is required.
Compliance & Regulatory Assurance
The HFG04 Harmonic and Flicker Signal Source supports verification of harmonic and flicker analyzers and measurement systems used for IEC / EN 61000-3-2 harmonic-current testing and IEC / EN 61000-3-3 voltage-fluctuation and flicker testing.
It is suitable for routine or intermediate system checks, troubleshooting and performance monitoring. HFG04 does not replace the harmonic analyzer, flickermeter, formal calibration or the complete DUT compliance test system.
Download Datasheet
Download the KingPo HFG04 Harmonic and Flicker Signal Source datasheet for IEC 61000-3-2 harmonic current and IEC 61000-3-3 flicker measurement-system verification, including key specifications, harmonic verification examples, flicker response examples and typical EMC laboratory use cases.
Technical Inquiry & Expert Support
For HFG04 selection or system verification support, please provide the following information:
IEC / EN / GB standard and edition
Analyzer or flickermeter manufacturer and model
Mains voltage and frequency
Harmonic verification, flicker verification, or both
Harmonic and Flicker Signal Source for IEC 61000-3-2 / IEC 61000-3-3 System Verification
FAQ
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