Assertion: phase | /r/HasProperty | independent
Facets:
value: to analyse with mathematical tools
type: PURPOSE
value: conceptually
type: MANNER
Source sentences:
text: The chief advantage of these was that the winding configuration was the same as for a single-phase capacitor-start motor and, by using a four-wire system, conceptually the phases were independent and easy to analyse with mathematical tools available at the time.