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Welcome To Tajalli Tech Pvt Ltd

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Transformer Testing

TRANSFORMER SERVICES

Because your plant depends on uninterrupted power, Tajalli Tech tests, maintains and repairs transformers of all sizes and makes, on site. Our engineers carry out insulation resistance, winding resistance, turns ratio and transformer oil BDV tests, along with oil filtration, so that problems are found before they cause a shutdown. After every visit you receive a written test report with clear recommendations. We work with industries, hospitals and commercial buildings across Uttar Pradesh from our base in Lucknow.

Remanufacture core and shell type - all OEMs

  • Major repairs
  • Forensics
  • Full IEEE C57.12 and CSA C88-M90 testing

Engineering Studies

  • Thermal upgrades – cooling studies
  • Short circuit upgrades
  • MVA upgrades
  • Redesign with lower losses
  • Create multiple-unit spares from a single unit
  • Controls upgrades

Onsite Services

  • Major repairs – all OEMs
  • Installation of new load tap changers – repairs, services
  • Repairs to fire damaged units
  • Remanufacture and repairs up to 100 MVA
  • Testing – full IEEE / CSA tests
  • Provide and install gas monitoring –
  • Kelman, Hydran
  • Reconditioning
  • Oil processing – 18 rigs nationwide
  • Regasketing
  • Bushing and gauge replacement
  • New radiators, coolers, pumps, fans
  • Replace fluids – mineral, FR3

Onsite High Voltage Testing

  • Portable induced testing to 150 MVA
  • Portable impulse testing to 220kV
  • Portable no load and load testing to 100 MVA
  • Sweep Frequency Response Analysis (SFRA) Testing
  • Tan Delta Measuring Testing
  • P I & DAR Measuring Testing
  • W R M Testing
  • Oil Filtration and Dehydration
  • Oil BDV Testing
  • C T Ratio Testing
  • Insulation Level Test
Transformer testing up to 132 kV

Transformer testing that tells you the real condition

A transformer can run for decades, or fail without warning if insulation, oil or windings are weak. Our engineers test distribution and power transformers on site and give you a clear report of every reading, compared with the limits in the standards.

We test transformers up to 132 kV for factories, hospitals, commercial buildings, utilities and government sites.

Get a quoteCall 0522-4956473
Tajalli Tech engineers testing a distribution transformer at a substation

Tests we carry out

  • Insulation resistance and polarisation index (PI)
  • Turns ratio test (TTR) on all taps
  • Winding resistance test
  • Magnetising current and magnetic balance
  • Vector group verification
  • Transformer oil BDV test
  • Oil moisture and acidity tests
  • Dissolved gas analysis (DGA) through an accredited lab
  • Buchholz, OTI and WTI protection checks
  • Earthing and neutral connection check

When should a transformer be tested?

SituationRecommended tests
Every year (routine)IR, PI, oil BDV, protection checks
Every 2 to 3 years, or after an alarmAdd ratio, winding resistance, magnetic balance and DGA
After a fault trip or Buchholz alarmFull diagnostic tests before re-energising
New or repaired transformerPre-commissioning tests before charging

How we work

1

Survey

We note rating, age, oil level and history.

2

Shutdown plan

Isolation and permits agreed with your team.

3

Testing

On-site tests with calibrated instruments.

4

Report

Readings against limits, with clear advice.

Why Tajalli Tech

Since 2016Class-A licensed electrical contractor based in Aliganj, Lucknow.
Calibrated test kitsOur own instruments, with a written report after every job.
ISO 9001:2015Documented quality process, and a Schneider Electric EcoXpert partner for LV services.

Questions

Up to what voltage do you test transformers?

We test transformers up to 132 kV.

How long does transformer testing take?

Routine tests on a distribution transformer take a few hours. A full diagnostic set on a large power transformer can take a day.

What does a low oil BDV mean?

It means moisture or dirt in the oil. The oil should be filtered or replaced before it damages the insulation. See transformer oil filtration.

Do you also repair transformers?

Yes. We carry out maintenance, oil filtration and repairs. See transformer and switchgear repair.

Book a transformer test

Tell us the rating, voltage and location of your transformer. We will send a quote and a test plan.

Send an enquiryFree Plant Health Card

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