PENCO provides comprehensive Transformer Testing services for industrial plants, power plants, large commercial facilities, power stations, etc. We are available 24 hours a day, seven days a week and are maintenance manager’s first choice for electrical testing, maintenance and repair.

Our comprehensive testing program includes the following common tests. We conduct additional electrical tests upon request:

  • Transformer Turns Ratio (TTR)
  • Insulation Resistance (Megger)
  • Winding Resistance
  • Current Transformer Ratio
  • Power Factor Testing – Transformer & Bushings
  • Transformer Excitation Testing
  • SFRA (Sweep Frequency Response Analysis)
  • DFR (Dielectric Frequency Response)
  • Uk% (Short Impedance)
  • FRSL (Frequency Response of Stray Losses)

  In order to perform high accuracy electrical test, PENCO engineers use updated electrical test devices such as:   

Ø  TRAX 220 (Megger Co.)

Ø  TDX 120 (Megger Co.)

Ø  TESTRANO (Omicron Co.)

Ø  CP TD1 (Omicron Co.)

Ø  CPC100 (Omicron Co.)

Ø  FRANEO 800 (Omicron Co.)

Ø  DIRANA (Omicron Co)


  • Tel: +98(021)44091264
  • Fax: +98(021)44091265
  • Cell: +98 912 542 1049
  • Address:Number 24,Floor 6,Sadeqie Trading Center,Sadeqie Sq, Tehran
  • Email: info@pencopower.com
Emergency Service Available 24/7/365



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