21-VLL Series Vertical Motors

The 21-VLL series three-phase medium-voltage motors are designed for large capacity applications.

• Designs up to 6.500 kW (8,700 hp)
• Wide variety of enclosures
• Standardized and custom frames
• Designed to meet worldwide standards
• Fabricated steel plate construction

Design Feature

• Excellent Electrical Performance
• Wide Range of Thrust Bearings
  Bearing selection is based on the speed and thrust load.
• Lower Noise & Lower Vibration
• Analytical Technology Improves Design
• Advanced VPI Insulation System
• Type of Protection & Cooling Method - customized enclosures allow a standard production motor to meet individual requirements
• Quality Control

Customer Benefit

• Efficiency, power factor, starting current limit, torque characteristics, etc.
  May be tailored to meet customer requirements
• Angular contact ball bearings (self-cooled)
  Spherical roller thrust bearings (self-cooled, air-cooled, water-cooled, oil-cooled
  Tilting pad thrust bearings (air-cooled, water-cooled, oil-cooled
• The latest technology reduces vibration and noise
  Noise level: 80dB(A) and lower (design value) JEC-2137/IEEE85 at no load 1 m 4 points average
  Vibration level: 1.8 mm/sec on bearing bracket. IEC60034-14 Grade B at no load (design value)
• • Electromagnetic field analysis
  • Heat conduction analysis
  • Air flow system analysis
• Improved insulation withstands higher surge
  Inverter drive operation is an option
• • Drip-proof, NEMA Weather Protected
  • Totally enclosed air-to-air cooled
  • Totally enclosed water-to-air cooled
• Designed for inspector/operator safety
  Bearing lubricant cycle extended and maintenance lowered with standard tilting pad thrust bearing