New Version Available
This study guide is out of date, click here to see the latest release.
This study guide is out of date, click here to see the latest release.
- Advanced knowledge - Understand advanced control schemes and arc-resistant switchgear.
- Arc-Resistant Switchgear Construction or Arc-Detection Devices? [PDF] Arc-resistant switchgear must resist two phenomena — increased internal pressure and burnthrough. These two phenomena operate in two different time frames. Burnthrough is a relatively long-time event. The test to prove resistance to burnthrough is of one second duration.
- Arc-resistAnt switchgear tested to ANSI C37.20.7 & NFPA 70E [PDF] Arc-resistant switchgear can assist with the first step effort by providing enhanced safety conditions when the operator task involves energized equipment and possible exposure to an arcing fault.
- Why is Continuous On-line Monitoring of Partial Discharge in the Switchgear Necessary? This article examines the advantages of continuous over periodic partial discharge (PD) testing.
Getting Started