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Power Transformer Testing, Diagnostics and Maintenance

Power Transformer Testing, Diagnostics and Maintenance

This One-day course is designed to help engineers understand the construction and maintenance (planning, testing and diagnostics) requirements for power transformers. Anyone directly involved in maintaining transformers or those requiring an understanding of the various tests and or analyzing test results will gain a better understanding of best maintenance practices as required by industry accepted standards.

Training program is based on: (1) Canadian Standards Association: CSA Z463- Standard for Maintenance of Electrical Systems; (2) Canadian Standards Association: CSA Z462- Standard for Electrical Safety; (3) National Electrical Testing Association (NETA): ANSI/NETA 2019 Standard for Maintenance Testing Specifications and (4) Professional Electrical Apparatus Recyclers League: Reconditioning Standards for Electrical Equipment.

Each student receives three comprehensive binders of reference material including maintenance frequencies, PEARL test standards and test forms.


After the training, the successful candidate will be able to:

  1. Understand the difference between Run to Failure, Predictive and Preventive maintenance programs
  2. Perform multiple tests as per industry standards
  3. Be able to recognize deficiencies and take/recommend corrective action
  4. Work safely

Who should attend:

This training is recommended for: Testing and commissioning engineers, industrial electricians, electrical engineers, substation technicians, substation engineers, field engineers, managers and substation supervisors.

Please note that his training can be modified to suit your specific needs. We will be happy to conduct a needs analysis with you to determine your specific requirements. It can be conducted either on-site or off-site.

I. Safety and Maintenance Planning

Objectivep – Review the basic concepts of electrical safety and maintenance as per CSA-Z462 and CSA-Z463.

  • Shock and arc flash safety.
  • Run to failure maintenance.
  • Preventive maintenance.
  • Predictive maintenance.
  • Apparatus failure modes and frequencies.

II. Transformer Insulation Systems

Objectivep – Review the concepts of dielectric theory and how different types of insulation perform during high voltage AC/DC testing.

  • Describe the types of insulation used in transformers.
  • Explain the factors causing insulation deterioration and failure modes.
  • Review NETA insulation resistance tests and how to interpret test results based on NETA and typical manufacturers standards.
  • These tests include, Spot test, Polarization Index, Dielectric Absorption, Step Voltage, Use of the Guard terminal

III. Power Transformer Testing

Objectivep – Describe how a transformer works and basic construction. Perform basic calculations for turns ratio, full load and short circuit currents. Review specific NETA tests on performed on transformers and how to interpret the test results.

  • Interpret nameplate data.
  • Perform tests as per NETA standards.
  • Tests include Visual Inspection, Auxiliary Devices, Insulation Resistance, Winding Resistance, Turns Ratio and Excitation Current,
  • Capacitance and Dissipation Factor, Sweep Frequency, Collecting Oil and Dissolved Gas Samples, Oil Sample Results Analysis, Dissolved Gas
  • Result Analysis

Registration Form

Basic Information - Step 1 of 3
Needed for easier scheduling the training with respect to the Timezone.
If you have the Skype account, we can contact you much easier to arrange the training details.
If you have the Whatsapp account, we can contact you much easier to arrange the training details.

Training Summary

Selected Training Course: Power Transformer Testing, Diagnostics and Maintenance
Duration: One day (8AM to 4PM)
Price: $549.00

After you submit the training request, you will be contacted by training management via email for scheduling details.

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