The motor exhibits three different torque curves suitable for {TAIL ~ starting operation}, {HEAD ~ an intermediate speed operation} and normal or steady state operation by the switching operation of the first and second switches 
The motor exhibits three different torque curves suitable for { TAIL ~ starting operation } , { HEAD ~ an intermediate speed operation } and normal or steady state operation by the switching operation of the first and second switches
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH