Source google image: http://1.bp.blogspot.com/-k0nGTBLzmtE/UdhnLexDQgI/AAAAAAAAICQ/FiaOFwDlhgk/s1600/NORMALISATION.JPG
Norme representation symbole electrique
Source google image: http://1.bp.blogspot.com/-k0nGTBLzmtE/UdhnLexDQgI/AAAAAAAAICQ/FiaOFwDlhgk/s1600/NORMALISATION.JPG