Accredited calibration · Harmonics and flicker

Harmonics and flicker system calibration to IEC 61000-3-2 and -3-3

Harmonic current measurement, flicker Pst evaluation, reference impedance and AC source output measured on site under LAB Support Ltd.'s A2LA accredited ISO/IEC 17025 scope, by the LAB Support Southeast Asia team.

Book a harmonics calibration Full accredited scope
Why it matters

Three instruments, one result, each with its own standard

A harmonics and flicker system is an AC source, a reference impedance and an analyser working together. IEC 61000-4-7 sets the accuracy of the harmonic current measurement, IEC 61000-4-15 the flickermeter response, and IEC 61000-3-3 the reference impedance the flicker is measured through. An error in any one shifts the pass/fail decision of a product test, so all three are calibrated at the same visit.

  • AC current including harmonics to 200 A per IEC 61000-4-7
  • Flicker Pst evaluation against the IEC 61000-4-15 test signals
  • Reference impedance resistance and inductance at 50 and 60 Hz
  • AC source voltage, frequency and distortion
ParameterRangeCommon methods and standards
Harmonic current measurement0.25 A to 200 A, 50 Hz to 5 kHzIEC/EN 61000-4-7, IEC 61000-3-2, power analyser
Flicker Pst0.9 to 1.1IEC/EN 61000-4-15, IEC 61000-3-3, power analyser
Reference impedance, resistance0.1 to 0.3 ohmIEC/EN 61000-3-3, 4-wire DMM
Reference impedance, inductance0.1 mH to 0.5 mH at 50 and 60 HzIEC/EN 61000-3-3, LCR meter
AC source output voltage and frequency60 mV to 1500 V, 10 Hz to 100 kHzDMM, power analyser
AC current, single and three phase10 mA to 600 ADMM, clamp-on tester, power analyser

The methods and standards shown are the ones most commonly requested. Within each parameter and range listed on the accredited scope, other calibration methods and standard editions can be supported under the flexible-scope provisions of LAB Support's A2LA accreditation. The measurement uncertainty for each parameter is stated on the certificate. Field calibration is included in the scope for every line above.

Instruments we calibrate

Models we calibrate most often

From our own calibration records. Any instrument within the scope can be calibrated; these are the ones we see most.

EM TEST DPA 500N, DPA 503N EM TEST ACS 500N, ACS 503N EM TEST NetWave 3, 7, 20, 30, 67, 90, 108 EM TEST AIF 503N reference impedances Teseq Profline 2100 series Keysight 6812B, 6813B Chroma 61600 series California Instruments MX series and others
On site

How the visit runs

Send the listSource, analyser and impedance models, nominal voltage and current range.
We come to youThe team brings a calibrated power analyser, current transducers, reference loads and an LCR meter.
Measure in placeHarmonic currents, flicker test signals, impedance and source output are measured with the system assembled as you use it.
Certificate on siteISO/IEC 17025 certificate with each parameter against the IEC tolerance, uncertainty and traceability.
Frequently asked

Questions we are asked

Is the flickermeter tested with the IEC 61000-4-15 signals?

Yes. The rectangular voltage change test signals of IEC 61000-4-15 are applied and the Pst reading compared with the expected value.

Do you calibrate the reference impedance separately?

Yes. Resistance and inductance of the reference impedance are measured at 50 and 60 Hz, since IEC 61000-3-3 defines the flicker result through them.

Can a three-phase system be calibrated on site?

Yes, per phase, up to the current range of the scope.

Which countries do you cover on site?

Malaysia, Singapore and Vietnam, with Penang as the base. Other locations on request.

Tell us what you need to test

We reply within one working day with a quote or a plan.

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