Description
Course Description: This class provides the information and hands-on training to test and maintain most of the major components of the substation except for the main transformer and protective relays. It includes Hands-on (~40%) training augmented with round-table discussions.
Prerequisites: Basic electrical training, some field experience and basic knowledge of switchgear.
Course Learning Objective:
- Theory, construction and operation of common types of medium voltage metal-enclosed switchgear and circuit breakers, including air-magnetic and vacuum
- Interpret ratings and nameplate data to identify breaker ratings and limitations
- Understand how med-voltage circuit breakers operate and know the causes of failure
- Safety requirements when operating, racking, testing or maintaining breakers.
- Required testing and maintenance of medium-voltage metal-enclosed circuit breakers, and switchgear in accordance with ANSI/NETA MTS.
- Tests commonly performed on circuit breakers and their associated switchgear
- Maintain station batteries in accordance with ANSI/NETA MTS
- Ground testing theory and interpreting test results in accordance with ANSI/ NETA MTS
- How to download and distribute Schweitzer (SEL) relay event files.
Hands-on Lab Session:
- Racking circuit breakers
- Perform and evaluate common circuit breaker electrical tests including insulation resistance, DC overpotential, contact resistance, insulation power factor and timing utilizing equipment from a variety of manufacturers.
- Perform routine maintenance on medium-voltage air and vacuum circuit breakers
- Perform clamp-on ground test and interpret the results
- Test and evaluate battery systems
- Perform fall-of-potential ground test and interpret results.
