Source google image: https://4.bp.blogspot.com/-nNskHgdr4MA/UzOLiOJuTgI/AAAAAAAAALA/au7k6zONDK4/s1600/etoile+triangle+demarrage.png
Schema electrique etoile triangle
Source google image: https://4.bp.blogspot.com/-nNskHgdr4MA/UzOLiOJuTgI/AAAAAAAAALA/au7k6zONDK4/s1600/etoile+triangle+demarrage.png