Manufacturing range for cast iron slip ring crane duty motors is from 112 to 400 frame. The same for squirrel cage motors in cast iron enclosure is from 80-400 & in aluminium enclosure is from 63-160.
Power supply : 415 volts, 3 phase, 50 Hz
Voltage variation : ± 10%
Frequency variation : ± 5%
Combined voltage and
frequency Variation : ± 10% (absolute sum)
Ambient temperature : 45°C
Altitude : upto 1000m.
Crane duty motors are used for following applications in majority:
- Cranes & hoists: long travel drive, cross travel drive, main hoist, auxiliary hoist.
- Material handling equipments: various conveyors
- Lifts
- Rolling mills