High voltage rib cooled motors

ABB high voltage rib cooled motors provide the benefits of a small size with high power density, high reliability, efficiency and easy maintenance. Rib cooled motors offer easy configurability and built-in serviceability throughout the product life cycle. Our rib cooled motors are available for both direct on line (DOL) and variable speed drive (VSD) for an even higher efficiency.

Our rib cooled motors are a high efficiency solution for a wide range of applications and industry segments. Rib cooled motors are commonly used in applications such as pumps, fans, blowers, compressors, conveyors, saws and mills. Industries, where rib cooled motors are most commonly used are mining, water, metals, chemical and pulp and paper.
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Key benefits

  • Available for variable speed drives (VSD), and thus allowing even higher energy savings
  • Safe operation in even the harshest of conditions - high protection level, IP class up to IP66
  • Safe area motors can be equipped with digital Smart Sensor, allowing easy access to motor main characteristics
  • Optimized and effective cooling allow longer lifetime for bearings and longer lubrication intervals.
  • Built-in configurability enables shorter delivery times
  • Built-in serviceability enables efficient maintenance reducing downtime and costs

Learn more about the International Electrotechnical Commission, IEC, efficiency classes for high voltage AC motors:

IE classes for high voltage AC motors
Rib cooled motor
Rib cooled motor US
StandardIEC and NEMA (electrical)
Output powerup to 2,24 MW
Shaft heights315, 355, 400, 450, 500, 560
Number of poles2 to 12
Ex protectionEx ec, Ex eb, Ex pzc, Ex pxb
Voltagesup to 11,5 kV
Frequency50 / 60 Hz or VSD
Ambient-50°C up to 60°C
CoolingAir cooled, External air cooled
ProtectionUp to IP66
Enclosure materialCast iron
BearingsAntifriction or sleeve
MountingHorizontal or vertical
OperatingVariable speed drive (VSD), Direct on line (DOL)

 

Rib cooled motors side photo
StandardNEMA MG-1 part 20 and IEEE112
Output powerup to 1000 Hp
Shaft heights5000, 5800
Number of poles2 to 6
Ex protectionHazardous classification Div 2, Class 1 & 2, Groups CDFG
Voltages460, 2300 / 4000
Frequency60 Hz (50 Hz re-ratable) 
Ambient-45°C up to 55°C
CoolingAir cooled, External air cooled (TEFC, TEBC)
ProtectionUp to IP55
Enclosure materialCast iron
BearingsBall and roller (convertible)
MountingHorizontal or wall-mount
OperatingVariable speed drive (VSD), Direct on line (DOL)

 

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