Thats it! " Wound Rotor Induction Motor"!
I couldnt think of the name of the type of motor it was Thank you Alan.
You are also correct it is a resistance start where that handle controls what resistance is placed in series with the rotor winding.. That little tank is full of resistors and has the main contacts and everything is submerged in oil, well everything but the overload relays.
And you are also correct in that type of motor being used for starting high inertial loads as this motor is coupled to a VERY heavy flywheel.
A.D
