The Harmonics and Flicker Generator

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Harmonics and Flicker generator
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The Harmonics & Flicker Generator (HFG01) has been designed by York EMC Services Ltd for the purpose of verifying harmonic and flicker test equipment. Until now there has been no easy and reliable way to externally check the performance of the measurement system to the EN/IEC 61000-3-2 harmonics and EN/IEC 61000-3-3 flicker standards.

The HFG01 allows the user to periodically verify their test equipment, ensuring compliance with standards and laboratory quality procedures. The unit provides a series of harmonic and flicker disturbances of a nominal but stable level. The generator may therefore be used to verify the stability of a measurement system. Alternatively due to its stability it may be used as a transfer standard from a calibrated system.

Stable load simulation
Repeatable measurements
Injects harmonics to EN61000-3-2 and flicker to EN61000-3-3
Evaluation of test systems specifically to EN standards
Compact and Portable
Comparisons between multi-site test environments


The unit is a standalone device and requires no additional equipment. A four-way rotary switch selects the mode of operation. The modes are defined by firmware running on a micro-controller. This will enable the characteristics of the generator to be reprogrammed in line with future changes to the standards.

The HFG01 simulates equipment under test (EUT), generating known, repeatable levels of harmonic and flicker disturbance in one of four modes of operation.



Frequency Range 50Hz to 2kHz (40th harmonic) direct connection
Output connector Standard mains plug to mate with local test equipment
Dimensions 330mm × 320mm × 170mm
Weight 4kg
Power supply 230Vac, 50Hz, 400W (maximum)
Indicators Thermal shutdown - red LED
Flicker Rate Pst
1.0 Hz 0.450
8.333 Hz 1.10

Standard Order Kits

Part Number Description Parts Included
HFG01KIT01 Standard HFG01 harmonics and flicker generator kit
  • HFG01 harmonic and flicker generator
  • CAL12 - standard test

Output Measurement Results

Order Nº Type Description
CAL12 Harmonics Measurement of load current made according to EN61000-3-2 in Steady State and Fluctuating Harmonics modes. Fundamental (50Hz) to 40th harmonic.
Flicker Measurements of short term flicker (Pst) made according to EN61000-3-3 with disturbance at 1Hz and 8.33Hz rates

Typical Output Measurement Results

Steady State Harmonics Fluctuating Harmonics

Further details can be obtained from:

York EMC Services Ltd
University of York
YO10 5DD
Tel: +44 (0) 1904 324440
Fax: +44 (0) 1904 324434

Last checked: 2009-May-13