Circuit breaker operational testing and management of SF6 gas are key aspects in maintaining circuit breakers to help ensure reliable operation. This interactive 4-day course focuses on theoretical background with practical field experience to provide technicians with vital knowledge for optimizing circuit breaker reliability.

The first two days will cover circuit breaker testing. Moving parts on circuit breakers wear, alignments and clearances change and critical functions can be negatively affected. Tests made with circuit breaker testers reveal these and other changes, in advance of a failure, which could render the equipment inoperable and cause damage to the electrical power system. An introduction of various mechanism types, interrupters and testing methodologies will be discussed. For each test, there will be an in-depth discussion of each measurement, setup and test methodology, and acceptance criteria. A Vanguard specialist will provide training to decipher and review apparatus test results so that they are clear and easy to understand. Test results will be used for reporting and maintenance purposes and used for historical data samples to improve maintenance schedules.

In partnership with DILO, the second two days will focus on SF6 gas handling fundamentals including theoretical and hands on training pertaining to safety, gas handling equipment and tooling, gas analysis, transportation, regulations and reporting. Test results will be used for reporting and maintenance purposes and used for historical data samples to improve maintenance schedules.

Learning Outcomes

Upon completion of this course, the participant will be able to:

  • Understand the operation of circuit breakers, when to perform routine circuit breaker tests
  • Interpret test results, case studies, and numerous field examples
  • Effectively create test plans using the manufacturer’s circuit breaker specifications
  • Confidently use Vanguard circuit breaker analyzers and VCBA S2 software to perform routine circuit breaker tests and manage test plans and test results
  • Theoretical and practical experience with SF6 gas handling equipment


Substation test technicians working in operations, maintenance, engineering, or other service field in which knowledge of circuit breaker testing methods and evaluation and SF6 gas handling is a required part of their job responsibilities.


An experienced Vanguard Engineer or Technical Application Engineer.
An experienced DILO Engineer or Technical Application Engineer.

Get EMPOWERED with Doble

Title: Circuit Breaker Testing Fundamentals & SF6 Gas Handling Fundamentals
Duration: 4 Days
Class Size: 8-15
Credits: Up to 3.2 CEUs or 32 Professional Development Hours

Register for Scheduled Class:
Dec. 9-12 | Ontario, CA 
Jan. 13-16 | Odessa, FL
May 11-14 | Ontario, CA
June 8-11 | Odessa, FL
Aug. 10-13 | Ontario, CA
Sept. 8-11 | Odessa, FL

Scheduled Course Price: $1800

For information on scheduling a course at your location or for other questions, please contact sales.

Detailed Course Brochure

2019/2020 Training Calendar

Doble Engineering Company

Doble Engineering Company