24 Credits
24 CEHs / CTDs
Dates
September 08 - September 10, 2026
Instructor
Eric Goetz, PE
Location
Qualus
100 Colonial Center Parkway
Suite 400
Lake Mary, FL 32746
Relay Testing Intermediate is an interactive seminar designed to teach relay technicians and field engineers new techniques and approaches to protective relay testing and test plan creation. The course is aimed at personnel between 2 and 5 years of related experience and may provide benefits for personnel with fewer or greater years of experience. The course combines in-class lecture, group activities, guided instruction and a hands-on lab. We will utilize our in-house relay lab for the hands-on testing portion of the seminar. The lab is highly interactive, as it gives participants the opportunity to review the equipment that would normally be used to protect and control electrical power systems. This seminar will utilize SEL relays and Doble Protection Suite software for the testing activities, but the testing concepts taught can translate to other relay and test equipment manufacturers.
Note: This seminar does not cover instrument transformer circuit check-out, DC controls testing, SCADA check-outs, or system start-up procedures. Those topics and activities are covered in depth in our Protection & Controls Commissioning Intermediate seminar.
Mid-level transmission and distribution protection and controls field engineers and technicians
Substation apparatus technicians
Design engineers
*To better understand this class, attending Relay Testing and Commissioning Basic or prior protection and controls field experience is recommended.
Relay Testing Overview
The Goal of Relay Testing
The Components of a Relay Test Plan
Acceptance Versus Maintenance Testing
Relay Settings File Review
Cross Checking Setpoints with Design Documents
Protection Elements
Control Functions
Custom Logic
Front Panel Display
Event Report
Relay Element Testing
Minimum Testing Requirements of Different Elements
Basic Test Modules and Techniques (i.e. ramps, state sequencers, etc.)
Advanced Testing Modules (i.e. modeling time curves, impedance zones and differential characteristics)
Relay Elements to be covered include:
Time and Instantaneous Overcurrent (50/51)
Directional Ground Overcurrent (67G)
Undervoltage and Overvoltage (27/59)
Synchronism Check (25)
Distance (21)
Transformer Differential (87T)
High and Low Impedance Bus Differentials (87Z/87B)
Line Differential (87L)
Functional Testing
Trip Logic
Custom Logic
Targets and Front Panel Displays
Reclosing
Breaker Failure
Introduction to End-to-End Testing
Test Reports
Required Information on Test Report
Test Report Formatting
This seminar has been approved by the Florida Board of Professional Engineers for CEHs.