Slip Ring Induction Motor
These types of motors are almost same as normal induction motors. These motors are appreciated for their noise less performance, low maintenance, easy to handle, compact designs, and other features widely. Both rotor and stator are winded with high quality copper conductor.  For trouble free and longer life operations large size of bearings are used. In order to have the exact machine readings, the strong base frame with perfect dial type spring and durable performance bolts are used. ISS standards slip rings induction motors. Brake drum and rotor pulley are perfectly balanced. Proper fittings of all terminals on terminal box. Rings of gun metal slip are used with superior quality carbon bushes.
Ratings: For 3ph, 415Volts, 50Hz., 2H.P to 7.5HP. Dynamic balanced slanted rotor used for the low noise.

Starting methods: starter resistance to Rotor with protection of lover load and no volt. Field windings and armatures are impregnated with vacuum pressure for the best insulation strength. 

Slip Ring Induction Motor