Medium Voltage Motors

Medium Voltage Motors

Bharat Bijlee Limited

Bharat Bijlee Ltd manufacturers Medium Voltage Motors. Bharat Bijlee is counted as a forerunner in HV and MV motors manufacturers in India. These motors are manufactured using Bharat Bijlee's tried and tested DCCA technology, offering high performance and better reliability with the use of dual cooling circuits. These HV and MV motors are suitable for use in various industrial sectors such as Power Generation, Mining, Chemical, Cement, Iron and Steel, Paper and Pulp, Water, Waste Water treatment etc. The motors can serve various applications such as Pump, Compressor, Conveyor, Mill, Fan, Blower, etc. Bharat Bijlee uses a new efficient cooling system called Dual Circuit Cooling Arrangement (DCCA) for all its High Voltage motors in frame 315 and above. This technology consists of two independent cooling systems which improves the overall cooling of the motor. The primary cooling circuit is the regular stator casing with cooling fins. The shaft mounted external fan blows air over the body fin and cools the motor by forced convection and radiation. The secondary internal cooling circuit consists of rotor with vent holes, an impeller and ventilating passage on the stator body. The air inside the motor is circulated by the impeller which passes through the ventilating passage where it gets cooled on its way from non-driving end to the driving end by the primary circuit. This cool air then passes over the DE overhangs and through the rotor vents to the non-driving end and on its way absorbs heat from the overhangs and from the rotor. This heated air again passes through the impeller to the ventilating ducts and the cycle repeats.

 

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  • Voltage - 690 V to 6.6 kV
  • Cooling - Type IC 411 / IC 416
  • Construction - Horizontal ( IM B3) / Vertical (V1)
  • Frame Sizes - MV 315L, MV 355L, MV 400ML & MV 450ML
  • kW Range - 160 - 1000 (4 Pole), 160 - 750 (6 Pole), 160 - 560 (8 Pole)

 

  • Compact TEFC motors for high efficiency in cast iron/ fabricated mild steel construction
  • Dual cooling circuit for even temperature distribution
  • Bearing cooling fan on DE for lower bearing temperature & longer re-greasing intervals
  • Class F Insulation with Class B rise
  • Ambient 40 0C & Altitude < 1000M
  • Epoxy Mica based vacuum pressure impregnated (VPI) insulation system for long life
  • Rotor with Pressure Die cast type Aluminum winding for Ruggedness
  • Phase segregated type main terminal box to prevent & withstand high fault levels
  • Platinum type RTD s - 6 nos. for windings
  • Bearing temperature detectors - 2 No Platinum RTDS. One each at DE and & ODE
  • Non-condensation heater
  • Suitable for direct drive throw flexible couplings without external thrust
  • Neutral Terminal Box for Star point
  • Dial type Thermometers for bearings with/without contacts
  • Suitability for higher Ambient temperature or Altitude
  • Suitability for Pulley / gear Drive/ External thrust
  • B3/B5 mounting
  • Low Vibration and Noise Level
  • Copper Bar Construction Rotor
  • Insulated Bearing on NDE Side

 

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