About Us

In 1979, WAPDA Authority established a setup “Transformer Reclamation Power Transformer Engineering Service Unit (PTESU) Workshop” at Lahore for attending the faults developed in Power Transformers. In 2001, The workshop was given under the administrative control of Pakistan WAPDA Foundation. PTESU has rendered valuable services to the Power sector of Pakistan which ensured continuity of Power in the country on the one hand and saved huge foreign exchange through repairs /rewinding of the defective transformers on the other hand.

Power Transformer is one of the expensive component of any Power system. The present worldwide financial recession has resulted in unaffordable price escalation of this essential component. It has therefore become imperative to refurbish the in service transformers to prolong their service life and to rewind the defective ones with new Insulation.


Years of
experience in
this field

Our Professionals



Engr. Sadiq Ullah

Deputy Manager


Asst. Manager

Engr. Mudassar

Accounts Officer

Muhammad Waqas

ISO Certified

Power Transforemr Engineering Service Unit takes pride in being a ISO-certified workshop demonstrating unwavering commitment to quality and precision. ISO 9001:2015 "14001-2015 & 45001-2018" certified workshops adhere to strict international standards for quality management systems. This certification reflects dedication to delivering top-notch services while continuously improving our processes. With ISO certification, customers are assured that they are receiving services of the highest standard and craftsmanship from our workshops.
ISO Certiified Verification Link.

Well Organized Testing Systems

Electrical Testing:

Following electrical tests are performed:

  • Transformer Turn Ratio
  • DC Winding Resistance
  • Sweep Frequency Response Analysis
  • Insulation Resistance
  • Capacitance & Dissipation Factor
  • No Load & Load Loss
  • Double Frequency with Stand
  • Hi Pot Voltage With Stand.
Oil Diagnostic Lab / Testing:

Following tests are performed in this lab:

  • Oxidation stability
  • Dissolve gas analysis
  • Dissipation factor
  • Resistivity
  • Dielectric Strength
  • Flash point tester
  • Viscosity Meter
  • Inter facial surface tension
  • Water content test set.

Reliable Support, Every Time

At power transformer engineering unit, customer satisfaction is our top priority. We not only offer a comprehensive one-year warranty on all our repairs but also provide complete support after the repairing. Our commitment extends beyond the transaction, ensuring that our customers experience peace of mind and confidence in the long-term functionality of their products. Your trust in us is the driving force behind our unwavering dedication to your satisfaction.


Leading The Way In Power Transformer Repair Projects

Call Us Now & Take Advantage of Our Services


What They Say About Our Service

We provide the hightest- quality
service to our customers.

Some of Our Clients