Skip to content
Carelabs

IEEE 1584 · Engineering

Harmonic Study & Analysis - Carelabz Ukraine

Carelabs delivers harmonic study and analysis for industrial and commercial facilities across Ukraine, measuring total harmonic distortion with a harmonics analyser and modelling system impedance versus frequency to identify resonance risk. Ukraine's power quality limits are set under DSTU EN 50160, adopted as part of its ongoing EU/ENTSO-E grid-integration process, alongside PUE for electrical installation compliance. Where levels exceed applicable limits, we recommend mitigation such as harmonic filters or relocated power-factor correction capacitance.

Free Consultation

Trips nobody can reproduce

A breaker operates, maintenance investigates, nothing is found, the plant restarts. It happens again a month later. Distortion is one of the few causes that behaves exactly like this.

What We Deliver

Residual current devices assessed

An RCD measures the vector sum of currents and responds to a waveform its design assumes. High-frequency leakage through equipment filters and capacitance can produce operation with no fault present at all.

WHY IT MATTERS

The trip that becomes routine

An operation nobody can explain gets absorbed into normal practice. The device is reset, the plant continues, and the possibility that protection is responding to something real stops being examined.

  • Distortion and leakage current logged continuously so an operation can be matched to conditions at the moment it occurred.
  • Standing leakage measured per circuit, since it accumulates across an installation and a shared RCD may be operating on the sum of many contributors.
  • Device type and sensitivity reviewed, because equipment with high-frequency leakage requires RCD types appropriate to that waveform.
  • CT and sensing arrangement verified, as a saturating or incorrectly installed sensor produces operation unrelated to any real condition.
  • Genuine insulation deterioration excluded before distortion is accepted as the cause, since assuming nuisance operation on a real fault is the dangerous error.
Contact Us

DELIVERABLES

What you receive

Issued against PUE and DBN V.2.5, with the measurement basis stated.

  1. 1Logged distortion and leakage current correlated with each recorded operation
  2. 2Standing leakage measured per circuit with the contributing equipment identified
  3. 3An assessment of whether installed device types suit the leakage waveform present
  4. 4Insulation test results confirming whether a genuine fault condition exists
  5. 5Mitigation options separating those that reduce leakage from those that tolerate it
Reach Out

How the study runs

01

Document the pattern

We record which devices operate, how often, and under what plant conditions, since the pattern usually narrows the mechanism considerably.

02

Exclude a real fault

Insulation resistance is tested first, because treating a genuine fault as nuisance operation is the one error with serious consequences.

03

Measure leakage per circuit

Standing high-frequency leakage is recorded circuit by circuit, identifying which equipment contributes and how the total accumulates.

04

Log through an event

Distortion and leakage are recorded continuously until an operation occurs, which produces the correlation the diagnosis depends on.

05

Review device suitability

Installed device types and sensitivities are assessed against the waveform actually present rather than against a generic assumption.

06

Report and options

Findings distinguish reducing leakage at source from selecting devices that tolerate it, with the trade-off of each stated.

Frequently asked questions

Yes. Equipment with input filters and switched-mode supplies produces standing high-frequency leakage to earth through capacitance rather than through any insulation defect. An RCD sums that leakage across everything downstream, and where the total approaches its threshold it operates correctly on a condition that is not a fault.
Insulation testing first, which is non-negotiable, because treating a genuine fault as nuisance operation is the error with real consequences. Once a fault is excluded, leakage is measured per circuit and correlated with the operations. Standing leakage that accumulates to near the threshold is a different signature from an insulation defect.
Sometimes, but it should be the considered option rather than the first one. Raising a threshold reduces protection, so it is appropriate only where leakage has been shown to be inherent to the equipment and not a fault. Splitting circuits across several devices, or selecting a type suited to the waveform, is frequently better.
A related one. They sample current and derive RMS or peak values, and distortion changes the relationship between those. Operation can then occur at a load below the intended setting, or be delayed when it should not be. Both are addressed by establishing what the device actually measures under real conditions.

Schedule Your Harmonic Study & Analysis - Carelabz Ukraine

Tell us about your project.

Browse ServicesRequest a Quote