Selection of special-purpose motors
Checking the suitability of a slip-ring motor
With the same pull-out torque as above, if we select a slip-ring motor and arrange the starter to develop an average pick-up torque of 200%, the available accelerating torque will be (200 – 68) = 132%. To determine the number of equally spread starts and stops, heating and cooling curves of the motor should be available and the manufacturer may be consulted. The above exercise is only for a general guidance. In such cases, the manufacturer should be consulted who may offer a better and more economical design.
Electric Motors | Switchgear Assemblies |
Captive Power Generation | Voltage surges and Over Voltages
Grounding / Earthing Power Capacitors | Non Isolated Bus Systems |
Isolated Phase Bus Systems Rising Mains | Bus Systems