Source google image: https://2.bp.blogspot.com/-zxMR_4xtnmk/U2P6jM0NMjI/AAAAAAAAAS8/BFOgxPdEj4E/s1600/demarrage+etoil+triongle+deux+sens.gif
Schema electrique un sens de marche
Source google image: https://2.bp.blogspot.com/-zxMR_4xtnmk/U2P6jM0NMjI/AAAAAAAAAS8/BFOgxPdEj4E/s1600/demarrage+etoil+triongle+deux+sens.gif