Assertion: relay's contact | /r/CapableOf | close under load
Facets:
Source sentences:
text: Visual Inspection of the arc: The electrical arc can be visually observed on an electromechanical power switch, relay and contactor, with visible contacts, while the contacts are opening and closing under load.
text: Graphical representation of measurements obtained by an oscilloscope: The electrical arc can be observed by using an oscilloscope to trace the voltage wave form across the contact terminals while the contacts are opening and closing under load.