Protective Relay Training

protective relay training

This 2-Day Protective Relay Training course provides a comprehensive understanding of industrial, commercial and institutional power system protection. Relay technicians, system protection engineers, consultants, and engineers and technicians working in system protection should take this course.

The course will benefit personnel of all levels of experience because it covers a range of complexity of relay schemes, methods of testing relays and of analyzing relay operations. We discuss system protection principles, measurement devices used for relaying, basic relay schemes used, and the most common schemes used in the field. This course provides professionals with real examples from actual system protection situations.

This course will cover relay theory and operation of the older electromechanical as well as the modern digital types, covering many types of functions such as overcurrent, over voltage, impedance and differential. Topics such as fault current basics and application of fuses and reclosers on distribution circuits and circuit breakers and instrument transformers in substations on distribution or transmission circuits or lines, will also be covered.


  • Gain valuable experience in utility and industrial electrical system analysis, protection, control, communication, and automation
  • Learn the latest trends in evolving electrical protection standards, design methods, and new technologies
  • Gain Valuable knowledge of electrical power system analysis and short circuit calculations, time current coordination curves, fusing fundamentals, and more!!
  • Learn how to keep your electrical system engineers, operators and project managers on track by using the latest relay protection techniques


Large or small, each and every industrial, commercial and institutional organization needs to understand how to protect their investment in their electric power systems. To do this properly, companies need to know how to perform an electrical protection analysis of all the parts of their power system: such as analyse fault data, come up with protection settings, then get all of the components of their plant to be controlled by the operators who are responsible for integrating their power system into communication and data acquisition modes.

Students will be learn the essentials of electrical protection design, relay coordination, and fusing fundamentals, breaker fundamentals. Students will be provided with an understanding of digital protective relaying, as we go through practical examples of generator, feeder, motor, and transformer electrical protection.




  • Understand the basic philosophy of system protection
  • Apply Current Transformers (CT) and Potential Transformers (PT) to relay systems
  • Understand different relay systems and how they respond to a fault
  • How to use relay event recordings to analyze relay operations



WHO should attend

  • Industrial, commercial, institutional electrical engineers, and electrical maintenance personnel
  • Consulting Electrical Engineers
  • Project engineers
  • Design engineers
  • Field technicians
  • Electrical technicians
  • Plant operators
  • Plant engineers
  • Electrical supervisors
  • Managers in charge of plant communication infrastructure


Students receive

  • This Course Includes Our Latest Electrical Protection and Control Handbook!! (Value $20)
  • $100 Coupon Toward any Future Electricity Forum Event (Restrictions Apply)
  • 1.4 Continuing Education Unit (CEU) Credits
  • FREE Magazine Subscription (Value $25.00)
  • Forum Presentation Materials in Paper Format




Protective Relay Training Industrial Power Systems



  • Introduction to protection
  • Different types of abnormal conditions
  • Overview of different kinds of protection
  • Speed of protection devices and its criticality
  • Main components of microprocessor relay
  • How a microprocessor is different from electromechanical relays


New Trends in Protection Testing

  • New techniques in the area of testing protection relays/systems
    • New features in microprocessor that helps maintenance
    • Testing microprocessor relays vs electromechanical relays
    • Interval based maintenance versus condition based
    • Features of microprocessor relays that help implement condition based maintenance


Fault Analysis

  • Introduction to fault analysis
  • Review of Ohmic method
    • Example
  • Per Unit method
    • Example
  • Typical impedance data for generators, transformers, and more
  • Symmetrical components
  • Setting up sequence networks for various types of faults
    • Example
  • Sequence impedance for transformers (various connections)
    • Examples including two winding and three winding transformers
  • Symmetrical and asymmetrical components of fault currents 
  • DC offset
  • Interrupting and first cycle ratings of interrupting devices
  • Withstand rating of non-interrupting devices


Instrument Transformers

  1. Current Transformers
    • Current Transformer – Basics
    • Different types of CTs (Bushing, wound, bar, etc.)
    • Excitation Curves – how to interpret and apply
    • Equivalent circuits of CTs
    • Accuracy classifications per IEC (type P and PX)
    • Burden calculations
    • Selection of CT type for various applications
    • Saturation due to AC and DC
    • Polarity

2. Voltage Transformers

    • Basics
    • Different connections used
    • Different types of VTs
    • Equivalent circuits of VTs
    • Accuracy classifications
    • Polarity


Overcurrent Protection

  • Basic Information
  • Use of Time Current Curves
  • Coordination Intervals
  • Mechanism of achieving coordination
  • Guidelines for pickup and time dial settings
  • Use and benefits of Instantaneous elements
  • Ground Overcurrent
  • Essentials of directional phase overcurrent
  • Maximum torque angle and polarizing quantities
  • Essentials of directional ground overcurrent
  • Different polarizing quantities used for ground directional


Transformer Protection

  • Introduction
    • Types of protection
    • Fault statistics
  • Transformer Energization
  • Inrush
    • Recovery
    • Sympathetic
    • Normal
  • Differential Protection
    • Vector compensation
    • Amplitude compensation
    • Handling various transformer connections
    • Harmonic restraint
    • Zero sequence elimination for external faults
  • Overexcitation protection
  • Through fault protection
  • Overvoltage protection
  • Restricted ground (Earth) fault protection
  • Sudden Pressure Relays
  • Bucholz Relays


Station Bus Protection

  • Introduction
    • General Information
    • Fault statistics
  • Principles of Bus Differential
  • High Impedance
    • Basic concept
    • Role of CT saturation
    • CT Requirements
    • How to set a high impedance bus differential relay
  • Low Impedance
    • CT saturation issue
    • Settings including slope setting
    • How to determine slope setting
    • Algorithm for detecting CT saturation
    • Other features in Numerical relays
  • Different Bus configuration 
  • Partial Bus Differential


Motor Protection

  • Introduction
    • General Information
    • Role of Motor in industry-statistics
    • Fault statistics
  • Motor damage-external factors
  • Motor damage-internal factors
  • Impact of losing motors in industrial plants
  • Data required to set motor protection relays
  • Load torque curves
  • Motor Thermal damage curves
  • Thermal protection
  • Overload protection
  • Locked Rotor protection
  • New features for thermal protection available in numerical relays
  • Bearing failures
  • Surge protection
  • Over voltage protection
  • Under voltage protection
  • Load jam protection
  • Loss of Load protection
  • Current unbalance protection
  • Permissible number of starts
  • Phase reversal
  • Phase fault protection
  • Differential protection
  • Ground fault protection


Generator Protection

  • Differential
  • Negative Sequence
  • Reverse Power
  • Loss of Field
  • Ground fault
  • Over/Under Frequency
  • Overspeed
  • Backup Protection
    • Using distance relays
    • Using voltage restraint overcurrent relays
  • Field Ground 
  • Accidental Energization
  • Start-up protection
  • High Speed Reclosing
  • Torsional Vibration
  • Out-of-Step
  • Different methods of tripping to isolate generator



  • Basis for Unit Commitment
    • Peaking Units
    • Intermediate Units
    • Base Loaded units
  • Starting time for various plants
  • Essentials of Black Start



Both days:

Start: 8:00 a.m.
Coffee break: 10:00 a.m.
Lunch: 12:00 noon
Finish: 4:30 p.m.




Registration Fees & CEU Credits

The registration fee to attend this training course is $799 + GST/HST.

Register and prepay 14 days before forum date and receive an early bird registration fee of $749 + GST/HST

Register 3 delegates at full price $799, 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 1.4 CEUs.

Course Locations
Corporate Sponsors

On-Site Training Available

We can present this Protective Relay Training Course to your electrical engineering and maintenance staff, on your premises, 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.


Content Community Connection

ELECTRICITY TODAY | Advertisements