ELK 483 - High Voltage Power Circuit Breakers

Course Objectives

1. To teach current breaking for circuit switching in electrical power systems, its problems and
solving methods,
2. To introduce types, design, and production of HV power circuit-breakers,
3. To provide selection and testing of HV power circuit-breakers for the power quality.

Course Description

Introduction to power circuit-breakers and breaking principles. Analysis of switching phenomenon in the high voltage power systems, switching surges, recovery voltage. Electrical arcs, arc extinction methods. Electrical contact problem. Breaking and extinction of arc at direct current. Survey of circuit-breaker types and constructions. Comparison and selection of power circuit- breakers. Testing of circuit-breakers.