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Chartered Electrical Safety Engineer (CESE)

Power Quality Audit and Harmonic Study Services

PowerTech has conducted energy and electrical audits since 2014. Every power quality audit is conducted by a Chartered Electrical Safety Engineer with a calibrated analyser at your incomer and panels. The recordings show which load is behind the failing capacitors, the tripping drives, the hot neutral, or the penalty, and the report says what to change.

  • IEEE 519-2022 harmonic limits
  • 1200+ energy and safety audits
  • Independent findings, no filter sale

Overview

How the Power Quality Audit or Harmonic Study Finds the Load behind Your Critical Failures

Variable frequency drives (VFDs), uninterruptible power supplies (UPS), induction furnaces, and LED drivers all draw current in pulses, not a smooth sine wave. Together they distort the supply your other machines share, and the damage lands somewhere else: on the capacitor bank, the drive next door, the transformer neutral, or the bill. A multimeter cannot see any of it.

A power quality audit, also known as a harmonic study, replaces guesswork with recordings. We connect a calibrated analyser at the point of common coupling (PCC), where your supply meets the grid, and at the panels that give trouble. It logs voltage, current, harmonics, sags, unbalance, and power factor. Each disturbance is checked against IEEE 519-2022 limits and traced to its load, so management fixes the source, not the symptom.

PowerTech's engineers conduct these audits from Pune, Mumbai, and Nashik. Below is what every audit covers:

  • Harmonics, sags, swells, unbalance, and power factor recorded at the PCC and the panels.
  • Each disturbance traced to the drive, furnace, or UPS that produces it.
  • A report with waveforms, your position against the limits, and fixes ranked by effect.

Trusted By

  • Mercedes-Benz
  • Raymond
  • Brembo
  • Benteler
  • Atlas Copco
  • Dabur
  • Coromandel
  • Everest
  • VIP
  • Magna Cosma International
  • Quinnox
  • IndiaMART
  • Ramee Group
  • Hotel Grape City
  • Executive Enclave
  • Ambar Group

What's included

Our Power Quality Audit Checklist

Each check starts with a symptom you can see and names the measurement that explains it. Below are the six checks in every power quality audit:

  • Capacitor banks that keep failing

    Harmonic currents and the resonance point at your automatic power factor correction (APFC) panel, so you learn why the capacitors overheat and fail early.

  • Hot transformers and neutrals

    Neutral current, transformer loading, and the third-harmonic currents that add up in the neutral instead of cancelling, so overheating is traced before insulation fails. A thermography audit shows the same heat from outside.

  • Drives and controls that trip

    Voltage sags, swells, and short interruptions time-stamped at the panel, so each drive or UPS trip is matched to the event that caused it.

  • Motors on an unbalanced supply

    Voltage unbalance between phases and the swings that welders and furnaces cause, so a hot motor or a flickering lamp is traced to its source.

  • Solar, generator, and UPS tie-ins

    Harmonics and voltage where inverters, diesel generators, and UPS join your network, so the tie-in is checked against the distribution company (DISCOM) connection conditions.

  • Power factor and the bill

    True power factor at the incomer, distortion included, checked against your tariff's rules, so you know which fix addresses the penalty and what to expect from it. The wider bill is an energy audit.

Compliance mandate

Is a Power Quality Audit Mandatory in India?

For designated consumers in Maharashtra, yes. Below is who is covered:

  • Designated consumers in Maharashtra: mandatory

    The Maharashtra Electricity Regulatory Commission (MERC) Supply Code, 2021, requires designated consumers at 11 kV and above to install a power quality meter and keep harmonic currents within its limits.

  • Solar and generator tie-ins: conditions apply

    The Central Electricity Authority's connectivity standards for distributed generation cap the harmonic currents grid-connected solar plants and generators may inject. Your DISCOM can ask for proof at connection.

  • Everyone else: voluntary

    Nothing in law requires it. Here the case is practical: a capacitor bank that failed twice, a drive that trips every afternoon, or a penalty that returns on every bill.

Next step

Let PowerTech Find the Cause Before the Next Capacitor Fails

Talk to our Chartered Electrical Safety Engineer about a harmonic study for your site.

  • No-obligation enquiry
  • Government-authorised engineer, calibrated analyser
  • Audits conducted anywhere in India

Why PowerTech

We Are Government-Approved Power Quality Auditor from Maharashtra

Four things the recording alone cannot give you:

  • Government-authorised Auditors

    A Chartered Electrical Safety Engineer (CESE), authorised by the Government of Maharashtra under the CEA (MSES) Regulations, 2023.

  • Measured to standard

    The analyser measures to IEC 61000-4-30, so every reading holds up when the DISCOM or an equipment maker checks it.

  • Root cause named

    The report names the machine behind each disturbance, from a drive to a furnace, and the change that removes it.

  • Nothing to sell

    Because we sell no filters, reactors, or capacitors, the fix in the report is the one the recordings justify.

Evidence that settles disputes

A dated, signed, week-long recording is evidence you can put in front of a DISCOM notice, a warranty refusal from an equipment maker, or an insurer's query after repeated failures.

How it works

How Our Power Quality Audit Runs on Your Site

Below are the five steps, from your symptom log to the fix list:

  1. Symptom log

    We collect plenty of informaiton including a single-line diagram, the load list, recent bills, and a log of every failure and trip, dated where possible.

  2. Analyser placement

    A Class A analyser (IEC 61000-4-30) goes on the incomer at the PCC and on the troublesome panels, clamped on every phase and the neutral.

  3. One-week recording

    It logs for seven days at each point, through every shift and the weekend, so a disturbance that strikes once a week is still caught.

  4. Analysis

    Each recording is checked against the harmonic limits, the tariff, and the equipment ratings, and every disturbance is matched to the load.

The engineer who conducts your audit

As per the Law, Power Quality Audit or Harmonic Assessment is Conducted by a Authorised Personnel Only

The authorisation belongs to a person, not a firm. Atul Kakad, Chartered Electrical Safety Engineer under Regulation 6 of the CEA (MSES) Regulations, 2023, conducts every power quality audit we run. He is also a BEE Certified Energy Manager, so the tariff side gets the same care.

  • Chartered Electrical Safety Engineer

    Regn. MAHCESE0001119052023, CEA (MSES) Regulations, 2023

  • BEE Certified Energy Manager

    Reg. EA-23066, Energy Conservation Act, 2001

  • Qualified Auditor, the firm's F&LSA Licence

    MF&ES/F&LSA/0029, valid to 21 Sep 2027

  • Advance Diploma in Industrial Safety

    First Class

Who we work with

PowerTech Conducts Power Quality Audits for Every Kind of Load

Any site with drives, furnaces, UPS systems, or a solar tie-in runs non-linear loads, and non-linear loads make harmonics. The recording is scoped to your incomer and the panels that matter. After the report, our engineers answer questions while your team makes the changes.

  • Manufacturing Plants

    Automobile and auto ancillary, pharma, food, and FMCG plants. Every drive, furnace, and compressor from the incomer down in scope.

    Request an audit
  • Steel and Foundries

    Induction furnaces swing the supply hard. We record the unbalance they cause, and the harmonics they push back onto the shared network.

    Request an audit
  • Data Centres

    UPS rectifiers distort the supply they are protecting. Recording covers the utility feed, the generator changeover, and the UPS output.

    Request an audit
  • Offices and IT Parks

    Hundreds of LED drivers and small power supplies add up in the neutral. We measure the neutral current before the riser starts running warm.

    Request an audit
  • Hospitals

    Imaging equipment, lifts, and essential-supply changeover on one network. Recording runs a full week across the incomer and the panels that matter.

    Request an audit
  • Malls and Hotels

    Chillers, lifts, kitchens, and signage on a tariff with a power factor clause. We check the true power factor and what it is costing.

    Request an audit
  • Pharma and Process Plants

    Validated equipment, tight tolerances, and drives everywhere. Each sag is time-stamped, so a batch loss can be matched to a recorded event.

    Request an audit
  • Sites with Rooftop Solar

    Inverters inject harmonics at the tie-in point. We check the injection against the DISCOM connection conditions before it becomes a notice.

    Request an audit
  • Housing Societies

    Lifts, pumps, and common-area lighting on a shared incomer. Recording finds the load behind flickering lamps and repeated MCB trips.

    Request an audit

Power Quality Audit: FAQs

Nine questions we hear before the analyser goes on:

What is a power quality audit?
A power quality audit is a recorded check of how clean and steady your electricity supply is, and of how much your own loads disturb it. The audit records seven days of voltage, current, harmonics, sags, swells, unbalance, and power factor at the incomer and the affected panels. A harmonic study is the part that deals with distortion from drives, furnaces, and UPS systems, and the two names are often used for the same audit.
Is a power quality audit mandatory in India?
Not by that name. In Maharashtra, the MERC Supply Code, 2021 (Clause 22.15), requires designated consumers at 11 kV and above to install a power quality meter and keep their harmonic currents within the Code's limits. The meter shows that a limit is being crossed. The audit finds which load is crossing it, and what to change. Grid-connected solar and generators must also meet the CEA connectivity standards. Everyone else audits because something fails or the bill carries a penalty.
Why do our capacitors keep failing?
Usually harmonics. Your capacitor bank and the transformer's inductance form a tuned circuit, and if its resonant frequency lands near the fifth or seventh harmonic that drives and UPS produce, those currents are amplified through the capacitors. They overheat and fail again after replacement. The audit measures the harmonic spectrum at the APFC panel and finds the resonance point, so the fix (a detuned reactor, a different step size, or a filter) is chosen from the recording, not guessed.
Why does a drive trip when the supply looks fine?
Because the meter shows an average and the drive sees every cycle. A voltage sag lasting a few hundred milliseconds, often from a fault on the DISCOM network or a large motor starting nearby, drops the drive's DC bus below its trip level and it stops, while the panel meter never moves. The audit's analyser time-stamps every sag, swell, and interruption for a week, so each trip in your log is matched to a recorded event and its likely source.
What are the IEEE 519 harmonic limits?
IEEE 519-2022 sets limits at the point of common coupling (PCC), where your installation meets the utility. Voltage distortion, mostly the utility's job, is capped at 8% total harmonic distortion (THD) up to 1 kV and 5% up to 69 kV. Current distortion, your job, is capped by total demand distortion (TDD) tables that depend on how stiff the supply is. The limits apply at the PCC, not at one drive's terminals, so the recording starts at the incomer.
How long does a power quality audit take?
Typically nine days on site for one measurement point: a day to connect, seven days of recording, and a day to remove. We deploy multiple analysers, so several points are recorded in the same week rather than one after another. The analysis and report follow within a week of the last recording. The scope of work states the dates before we start.
What do we receive at the end of the audit?
A harmonic study report signed by the Chartered Electrical Safety Engineer who conducted it. It holds the recorded waveforms and trend charts, each disturbance matched to the load that caused it, your readings set against the IEEE 519 limits and, in Maharashtra, the MERC limits, the true power factor, and a fix list in priority order with the expected effect of each change. You also get the raw analyser files, so any consultant or vendor can check our work.
Do you supply or install harmonic filters?
No. PowerTech is an audit firm and sells no filters, reactors, or capacitor banks, so the report recommends only what the recordings justify. Where a filter is the right fix, the report gives its type, rating, and location, and you buy it from any vendor. Often the cheaper fix is at the source, such as a DC choke on the drive or a changed setting. Reviewing vendor quotes or verifying the result afterwards is a separate, optional engagement.
How much does a power quality audit cost in India?
It depends on the number of measurement points, the voltage level, and how much of the plant the analysis has to cover. One low-tension (LT) incomer with one troublesome panel is a small job. A plant with three high-tension (HT) incomers, a furnace, and a solar tie-in is not. Share your single line diagram and a line on the symptom, and the scope comes back with a fixed price. Asking commits you to nothing.

Request an audit

Book a power quality audit for your facility

Write to us with the symptom: a capacitor bank that keeps failing, a drive that trips, a DISCOM letter about harmonics, or a penalty on the bill. Calls are answered at once, emails within 24 hours, and a scope follows.

  1. We call you back A short call about your incomer voltage, the loads on site, and the symptom.
  2. You get a scope The measurement points, the recording plan, and commercial terms, fixed before anyone arrives.
  3. The recording runs Our engineers connect the analyser, it records for a week, and the CESE reads the results.
  • A Chartered Electrical Safety Engineer signs the report
  • Measured to IEC 61000-4-30
  • No filter, reactor, or capacitor sale

Make an enquiry

Tell us what is failing and where.

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