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Substation Maintenance Training

Substation Maintenance Training

You can access the live online training through our web-based platform from your own computer. You can see and hear the instructor and see his screen live.

You can interact and ask questions. The cost of the training also includes 7 days of email mentoring with the instructor.

This Substation Maintenance Training course is a 12-Hour Live online instruction-led course that will cover the maintenance and testing requirements for common substation facilities.

Electrical Substation maintenance is a key component of any substation owner's electrical maintenance program. It has been well documented that failures in key procedures such as racking mechanisms, meters, relays and busses are among the most common source of unplanned outages. Electrical transmission, distribution and switching substations generally have switching, protection and control equipment and one or more transformers.Our electrical substation maintenance course focuses on maintenance and testing of switchgear, circuit breakers, batteries and protective relays.

This Substation Maintenance Training course will cover the maintenance and testing requirements for common substation devices, including power transformers, oil, air and vacuum circuit breakers, switchgear, ground grid systems, batteries, chargers and insulating liquids. This course focuses on what to do, when to do it and how to interpret the results from testing and maintenance. This Substation Maintenance course will deal with all of these important issues




  • Substation types, applications, components and safety procedures
  • Maintenance and testing methods for medium-voltage circuit breakers
  • How to perform insulation resistance, contact resistance on air, oil and vacuum breakers, and tank loss index on oil circuit breaker and vacuum bottle integrity tests on vacuum breaker
  • Switchgear arrangement, torque requirements, insulation systems and maintenance intervals
  • How to perform switchgear inspection and maintenance


WHO should attend

This course is designed for engineering project managers, engineers, and technicians from utilities who have built or are considering building or retrofitting substations or distribution systems with SCADA and substation integration and automation equipment.


  • Substation operation and planning Managers
  • Transmission maintenance engineers
  • Distribution maintenance engineers
  • Substation Design Engineers
  • Consulting Engineers
  • maintenance Engineers & technologists
  • Substation network maintenance engineers
  • Substation operation/maintenance engineers & technologists
  • Substation protection & control engineers & technologists


Students receive

  • FREE T&D Automation and AMR/AMI Systems Handbook Vol. 2 (Value $20)
  • $100 Coupon Toward any Future Electricity Forum Event (Restrictions Apply)
  • 1.2 Continuing Education Unit (CEU) Credits (12 Professional Development Hours)
  • FREE Electricity Today Magazine Subscription (Value $25.00)
  • Forum Presentations in Paper Format



Substation Maintenance Training Course Outline



Session 1: Substation Overview

  • Purpose of a Substation
  • Components of a Power System
  • Types of Substations
  • Substation Switching Configurations
  • Distribution Substation Configurations
  • Substation Components
  • Metering in Substations
  • Relaying in Substations
  • Substation SCADA

Session 2: Air and Disconnect Switches

  • Maintenance and Testing
  • Components
  • Interlocking
  • Motor-Operated Mechanism
  • Vacuum Interrupters
  • Maintenance Requirements
  • Testing

Session 3: Circuit Breaker Maintenance and Testing

  • Overall Maintenance
  • Electrical Testing
  • High-Potential Testing (Hi-Pot)
  • Principles of Power Factor Testing
  • Operation and Timing Tests

Session 4: Switchgear Maintenance and Testing

  • Arrangement of Components
  • Maintenance Intervals
  • Maintaining the Insulation System
  • Maintaining Auxiliary Components
  • Torque Requirement for Switchgear Assemblies
  • Electrical Testing of Switchgear

Session 5: Transformer DC and AC Testing

  • General Safety Precautions
  • DC Testing
  • Insulation Resistance
  • Winding Resistance Testing
  • AC Testing
  • Power Factor Testing Fundamentals
  • Transformer Winding Testing
  • Typical Tests Performed Using Power Factor/Dissipation Factor Test Sets
  • Transformer Bushing Testing
  • Liquid Insulating Power Testing
  • Core Excitation Current Testing



Session 6: Transformer Oil Testing

  • Insulating Liquids
  • Liquid Sampling
  • Sampling for Power Factor Testing
  • Sampling for Gas-In-Oil Analysis ASTM D-3613
  • Silicone Insulating Fluid
  • Dielectric Breakdown Voltage Test
  • Color Testing (ASTM D-1500)
  • Visual Examination (ASTM D-1524)
  • Neutralization Number Test (ASTM D-1534)
  • Interfacial Tension Test
  • Moisture Content Test (ASTM D-1533)
  • Evaluation of Test Data
  • Other Insulating Liquids

Session 7: Transformer Gas Testing

  • Gas Detection
  • Oxygen Testing
  • Combustible Gas Testing
  • Gas Analysis Interpretation

Session 8: Current and Voltage Transformers

  • Elementary Connections
  • Instrument Transformers
  • Types of Current Transformers
  • Understanding CT Ratios
  • Determining CT Polarity
  • Measuring Current
  • Shorting CT Secondary
  • Current Circuits
  • Operation of Current Transformers at Excessive Burden
  • Open-Circuit Voltage
  • Understanding CTs in a Schematic
  • Voltage Transformers
  • Coupling Capacitors Voltage
  • Transformer Design Fundamentals
  • Application: High-Voltage
  • Transmission (115 kV – 500 kV)
  • Understanding Voltage Transformers in a Schematic

Session 9: Ground Testing

  • Types of Connections
  • Applications
  • Reasons for Special Treatment
  • The Hazard
  • Surface Resistivity
  • Bulk Soil Resistivity Measurement
  • Design of Grid
  • Operating Handles
  • Fences
  • Principles Involved in Earth Resistance Testing
  • Basic Test Methods for Earth Resistance
  • Effects of Different Reference Probe Locations
  • Tests at a Large Substation
  • General Comments
  • Other Tests
  • Maintenance

Session 10: Battery Maintenance and Testing

  • Battery In-Service Operation
  • Temperature and Battery Life
  • Battery Safety Factors
  • Safety Hazards
  • Safety Equipment
  • Safety Precautions
  • Battery Inspections
  • Corrective Actions
  • Equalizing Charge (Lead-Acid Only)
  • Battery Measurement Techniques

Session 11: Overview of Protective Relays

  • Classification of Relays
  • Protective Zones
  • Fundamentals of Electromechanical Design
  • Relay Construction
  • Time Characteristics
  • Protective Relay Maintenance and Testing
  • Mechanical and Visual Inspections
  • Preventive Maintenance Testing
  • Acceptance Testing
  • Testing Techniques
  • General Tests
  • Relays in Substations



Both days:

Start: 10 a.m. Eastern Time
Finish: 4:30 p.m. Eastern Time




Live Online Course Registration Fees & CEU Credits

The registration fee to attend this live online training course is $599 + GST/HST.

Click Here to download a $100 discount coupon that you can apply toward the regular registration fee and pay only $499 + GST/HST

Register 3 delegates at full price $599, and get a 4th registration FREE!

Earn Continuing Education Unit (CEU) Credits

Successful completion of this course qualifies delegates to receive a certificate of course completion with indicated CEUs.


CEUs are granted by the Engineering Institute of Canada. One CEU is equivalent to 10 professional development hours of instruction.

This course earns 1.2 CEUs.

Live Online Course Schedule

Live on-line or in-person. Customized.

Live online group training

We can present this Substation Maintenance Training to your electrical engineering and maintenance staff, tailored to your specific equipment and requirements. We are ready to help design this program for you. Click on the link below to request a FREE quotation.