ECN Forum Forums Technical Discussion Electrical Theory and Applications Low / High speed 3 phase motor problem

My reference material says this:
Low speed--line 1 to 2, line 2 to 3, line 3 to 1, and 4,5,6 open;
High speed--line 1 to 4, line 2 to 5, line 3 to 6, 1,2,3 together.