An induction motor 1, which further comprises {HEAD ~ a control device} for effecting {TAIL ~ the ON/OFF controlling} of said first and second connection changing switches 
for effecting
An induction motor 1 , which further comprises { HEAD ~ a control device } for effecting { TAIL ~ the ON / OFF controlling } of said first and second connection changing switches
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH