Circuit Breaker Operation, Controls, and Troubleshooting

From: $1,760.00

Category: Tag:

Product Description

About this course…

Reliable and safe operation of a power system requires a thorough knowledge of circuit breaker operations, testing and failure modes.  This course is designed to provide the knowledge and skills to perform those tasks as well as minor maintenance and repair. Read and understand the applicable electrical drawings and proper sequential operation of a variety of low and medium voltage circuit breakers and learn to evaluate contracted work for major maintenance, repair and overhaul of equipment.

Who should attend…

Technicians, electricians, first line supervisors, and others responsible for maintaining operational integrity of plant power systems and performing basic testing, maintenance, or repair of low and medium-voltage circuit breakers. Intended for those whose primary objective is return-to-service, as well as minor maintenance and repair.

You’ll learn…
  • How to read and interpret electrical drawings related to circuit breaker operation and their interaction with power systems
  • How to use electrical drawings to troubleshoot and correct problems
  • Learn sequential electrical operation of a variety of solenoid and stored energy breakers
  • Electrical and mechanical features, functions and operation of circuit breakers
  • Diagnose problems, determine level of corrective action required, and learn who should perform corrective actions
  • Routine level maintenance and testing of low- and medium-voltage circuit breakers in accordance with ANSI/NETA MTS Standard for Maintenance Testing Specifications
  • Theory and operation of test equipment
  • Insulation and contact resistance testing
  • High potential and vacuum bottle testing
  • Primary and secondary injection testing
  • Read and understand time/current curves
  • Functions, features, maintenance and testing of breaker cells and auxiliary systems
  • Evaluate contracted work, understand and correctly interpret repair orders, maintenance work and test reports
  • A hands on training program (~50% when held at Shermco facility, Irving, TX and other select locations)augmented with round table discussions



Students should have basic electrical training, some field experience and basic knowledge of switchgear is highly recommended.

The Details…

Course Length 4.5 days (36 contact hours)*
Each open-enrollment student will receive a course text and a copy of the current ANSI/NETA MTS (copy of NFPA 70E available at an additional cost).

* If hosted at Shermco’s training facility.


Shermco Navigation