Breakers and Switchgear explains the basics of how low- and medium-voltage circuit breakers work. Shows how to perform mechanical maintenance and electrical tests on circuit breakers. Explains how oil, air-magnetic, vacuum, and SF6 circuit breakers open contacts and extinguish arcs. How to rack out, inspect and clean the interior of air-magnetic and vacuum breakers. For SF6 breakers, demonstrates how to perform visual inspections.
5-1/2" x 8-1/2" 36 pages By Alexander Publications
