About this course…
Many industrial customers choose to perform general testing and maintenance on incoming utility substations as well as downstream substations within the plant perimeters. Both technical competence and proper safety practices are critical to these procedures. This session 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.
Who should attend…
Technicians, electricians, first line supervisors, and others responsible for full range maintenance, testing or repair of all types of medium-voltage circuit breakers, batteries, and ground systems.
Students should have basic electrical training, some field experience and basic knowledge of switchgear is highly recommended.
Course Length 3.5 days (28 contact hours)
Each open-enrollment student will receive a course text and Getting Down to Earth.
- Theory, construction and operation of common types of medium-voltage metal-enclosed switchgear and circuit breakers, including air-magnetic and vacuum
- How to interpret ratings and nameplate data and identify breaker ratings and limitations
- Understand how medium-voltage circuit breakers operate, and know the primary causes of failure
- Safety requirements when operating, racking, testing or maintaining circuit 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
- How to maintain station batteries in accordance with ANSI/NETA MTS
- Ground testing theory and interpreting test results in accordance with ANSI/ NETA MTS
Hands-on lab sessions:
- Racking circuit breakers
- Perform and evaluate common circuit breaker electrical tests including insulation resistance, dc overpotential, contact resistance a, insulation power factor and timing utilizing equipment from a variety of manufacturers
- Perform routine maintenance on medium voltage air and vacuum circuit breakers
- Perform a clamp-on ground test and interpret the results
- Test and evaluate battery systems
- Perform fall-of-potential ground test and interpret results