Starting Torque

Autotransformer $T subscript s t a r t end subscript equals open parentheses V subscript s t end subscript over V subscript d o l end subscript close parentheses squared cross times T subscript d o l end subscript$

Star Delta $T subscript s t end subscript equals 1 third cross times T subscript d o l end subscript$

» Formulae for Rotating Machines