Accredited calibration · Dips and power-quality testers

Dips, interruptions and variations tester calibration to IEC 61000-4-11

Output voltage levels, inrush current capability, dip timing and phase angle of power-quality test systems measured on site under LAB Support Ltd.'s A2LA accredited ISO/IEC 17025 scope, by the LAB Support Southeast Asia team.

Book a dips calibration Full accredited scope

Why it matters

The dip is defined by its depth, its timing and its edge

IEC 61000-4-11 specifies the residual voltage at each dip level, the rise and fall time of the voltage change, the phase angle at which it starts and the inrush current the source must deliver. A tester whose switching edges have slowed or whose residual level has drifted may pass a product that fails in a second laboratory. IEC 61000-4-29 adds DC dips and IEC 61000-4-34 covers high-current equipment.

Residual voltage at 0 %, 40 %, 70 % and 80 % of nominal
Voltage change rise and fall time, dip duration and phase angle
Inrush current capability to 1 kA
DC dips and interruptions to IEC 61000-4-29

Parameter	Range	Common methods and standards
Output voltage, AC and DC	1 mV to 80 V, up to 260 V DC	IEC/EN 61000-4-11, IEC 61000-4-29, oscilloscope
Inrush current	0.001 kA to 1 kA	IEC/EN 61000-4-11 Annex, oscilloscope with current transducer
Dip duration and rise/fall time of the voltage change	0.5 ns to 60 s	IEC/EN 61000-4-11
Phase angle of the dip	0 to 360 degrees	IEC/EN 61000-4-11
Three-phase and high-current systems	To 75 A per phase	IEC 61000-4-34

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 PFS 503N32, N63, N100 EM TEST PFS 200N, PFM 200N EM TEST variac NX1, TVT 1 Teseq PQM 3403 with NSG 3040 Teseq Profline 2100 series Seibersdorf POD 16 NF AS-517A Noiseken VDS series and others

On site

How the visit runs

Send the listTester model, nominal voltage and current, and whether you test single or three phase.

We come to youThe team brings a calibrated oscilloscope, current transducer, voltage divider and load bank.

Measure in placeEach dip level, duration and phase angle is captured at your mains, plus inrush capability.

Certificate on siteISO/IEC 17025 certificate with each parameter against the tolerance, uncertainty and traceability.

Frequently asked

Questions we are asked

Do you test inrush current capability?

Yes. IEC 61000-4-11 requires the source to deliver 500 A peak inrush for 220 to 240 V systems. It is measured with a current transducer and a defined load at the visit.

Can combined generators be calibrated for dips at the same time?

Yes. Dips modules in Teseq NSG 3040 and EM TEST compact NX generators are calibrated alongside burst and surge in one visit.

Is the phase angle verified?

Yes. Dips are triggered at the phase angles the standard lists and the actual angle is measured from the waveform.

Which countries do you cover on site?

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

Dips, interruptions and variations tester calibration to IEC 61000-4-11

The dip is defined by its depth, its timing and its edge

Models we calibrate most often

How the visit runs

Questions we are asked

Tell us what you need to test