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Three-phase asynchronous electric motor with frequency regulation for rolling mills, JM-AM-BFJ series

Frequency: 0-50-100 Hz
Frame number: H355mm-H560mm
Power range: 200kW-1400kW
Number of poles: 4P/6P
Rated voltage: 380/660/690V
Class of insulation: Class F
Class of protection: IP55
Mounting: IMB3
Cooling type: IC416

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This motor is specially designed to drive equipment requiring speed regulation, such as pumps, fans, hoists, and rolling mills. It is widely used in industries such as steel, metallurgy, light industry, textiles, chemicals, petroleum, and construction.
The motor’s power ranges from 200 kW to 1400 kW, with 6 or 8 poles, a rated voltage of 690V (optional 380V or 660V), a rated frequency of 50Hz, and a frequency range of 0 to 100Hz.
The motor features a cast-iron cylindrical ribbed housing for stability and reliability. The stator uses F-class insulation materials, processed with VPI vacuum pressure impregnation technology, providing excellent insulation, mechanical strength, and moisture resistance. The rotor can be made of aluminum or copper, using advanced centrifugal casting or welding technologies.
The motor has an IP55 protection rating and an IC416 cooling system. An independent cooling fan is installed at the non-drive end, ensuring sufficient airflow and pressure during low-frequency operation. Built-in features include stator and bearing temperature sensors, an anti-moisture heater, and an encoder, with additional protection options available upon request.
Operating conditions: altitude not exceeding 1000 meters, ambient temperature range from -10℃ to +40℃.

Operating conditions:

  • Altitude: not exceeding 1000 m;
  • Ambient temperature: -10°C to +40°C;
  • Rated voltage: 690 V;
  • Rated frequency: 50 Hz
Technical data
ModelRated power (kW)Stator current (A)Efficiency (%)Power factor (cosφ)Maximum torque / Rated torqueMotor moment of inertia (kg·m2)Weight (kg)
355-620020694.50.862.6151900
355-622022794.60.862.615.52030
355-625025894.60.862.6182150
400-628028894.70.862.6232300
400-631532494.70.862.6242380
400-635536594.80.862.6252550
450-6400410950.862.6214540
450-645046095.20.862.6234690
450-650051195.20.862.625.54810
450-656057295.30.862.6284950
450-663064395.40.862.7305150
500-671072495.50.862.7475700
500-680081595.50.862.9515880
500-690091795.50.863566140
500-61000101895.60.863656500
560-61120113995.70.863888100
560-61250127095.80.863.11028450
560-61400142295.80.863.11128850
355-820021094.20.852.5182160
355-822023094.30.852.5202280
400-825026194.30.852.5212200
400-828029294.40.862.5252550
400-831532994.40.862.6262700
450-835537094.50.862.7304840
450-840041794.60.852.7334950
450-845046894.70.852.8365040
450-850052094.80.853415150
500-856058095.10.863.1575430
500-863065295.10.863.1665660
500-871073595.10.863.1725860
500-880082895.20.853.1806100
560-890092995.40.853.11317750
560-81000103295.40.853.11438000
560-81120115495.60.853.11618200