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Pegasus MHV - Wound Rotor Induction Motor

Pegasus MHV - Wound Rotor Induction Motor

Pegasus MHV - Wound Rotor Induction Motor

Product catalog summary
Introduction
GE Energy has been manufacturing motors for over 125 years, producing over 17,000 medium/high voltage machines since 1962. The Pegasus MHV wound rotor induction motors are designed for applications in cement, mining, and mineral processing industries, offering a range of 1,000-10,500 HP (750-7830 kW).
Applications & Standards
These motors are used for crushing and grinding applications and comply with NEMA and CSA standards. They offer high motor output per frame size, optimized electromagnetic designs, and a new ventilation/cooling system for cost efficiency and faster payback.
Design Features
  • High Reliability & Low Maintenance: Features include a patented brush lifting device, low wear on brushes, and successful prototype testing for 30,000 cycles.
  • Stator & Rotor Construction: Stator laminations are precision punched, and the rotor consists of a laminated magnetic core with a three-phase insulated winding.
  • Insulation System: Utilizes an epoxy solventless resin vacuum-pressure-impregnation (VPI) process for long life and reliability.
Ventilation and Cooling
New designs improve heat exchange with low-pressure drop. TEAAC enclosures feature a new external fan for lower temperatures and noise, while WPII enclosures have a "top hat" for increased cooling.
Enclosure Types
  • Water Protected Type II (WPII): Designed for environments with excessive airborne particles.
  • Totally Enclosed Air-to-Air Cooled (TEAAC/CACA): Provides isolation of critical components with a top-mounted air-to-air heat exchanger.
  • Totally Enclosed Water-to-Air Cooled (TEWAC/CACW): Suitable for indoor or outdoor use, with a circulating water system for heat dissipation.
Bearings
Self-aligning spherical seat sleeve bearings are used, designed to keep oil in and contamination out. They are insulated to eliminate shaft currents and allow easy inspection and replacement.
Accessories and Features
Standard features include winding and bearing RTDs and condition monitoring. Optional accessories include a brush lifting device, surge protection, tachometers, and more.
Conclusion
The Pegasus MHV wound rotor induction motors are engineered for high performance, reliability, and efficiency, with advanced features and compliance with industry standards.
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Catalog excerpts

Pegasus MHV - Wound Rotor Induction Motor-1

Wound Rotor Induction Motor

 Open the catalog to page 1
Pegasus MHV - Wound Rotor Induction Motor-2

Experience Matters We’ve manufactured motors for over 125 years. ,Q *( IRXQGHU 7KRPDV (GLVRQ FRQVWUXFWHG WKH ¿UVW HOHFWULF PRWRU IRU D 110 to 120 Volt line at Menlo Park, NJ. This device still exists and is operative! It is located in the Edison Historical Collection in New Jersey. Since 1962, GE has produced over 17,000 medium/high voltage machines. :H·YH EHHQ D FHUWL¿HG ,62 4XDOLW\ 6\VWHP VLQFH 6L[ 6LJPD processes have been hardwired into our organic functions since 1995. And now we presently offer a full range of medium voltage motors and generators up to 22,000 HP (16,000 kW). Applications...

 Open the catalog to page 2
Pegasus MHV - Wound Rotor Induction Motor-3

Expansive Product Offering Weather protected Type Using the latest engineering simulation tools and modern modal testing equipment made it possible for GE to design a stator which reduced the possibility of operating close to high amplification regions. Water Protected Type II This enclosure is designed for modified to include filters for extreme environments with excessive airborne particles. Air passage includes several abrupt 90 degree changes in direction plus an intake area for reduced velocity to allow solid particles or moisture to drop out before the ventilating air contacts active parts...

 Open the catalog to page 3
Pegasus MHV - Wound Rotor Induction Motor-4

Superior Design Stator Construction Insulation System Stator laminations are precision punched from high quality, low loss electrical sheet steel with a thermally VWDEOH LQVXODWLQJ ¿OP 0RVW UDWLQJV DUH RI UHFWDQJXODU frame construction, utilizing packaged cores. The magnetic core consists of laminations compressed for mechanical strength and completely wound before the core package is inserted into the frame. This construction permits free access to the coil end-turns during PDQXIDFWXUH DQG VLPSOL¿HV LQVHUWLRQ RI WKH ZLQGLQJ DQG bracing systems. This visual accessibility also helps to ensure...

 Open the catalog to page 4
Pegasus MHV - Wound Rotor Induction Motor-5

Where applicable, self-aligning spherical seat sleeve bearings are supplied in line with DIN 31693. These bearings employ structural features and sealing systems designed to keep the oil in and any contamination out. Additional seals are also available to meet IP-55 • The babbit-lined bearing shell is supported by a rugged housing and employs an oil ring that carries the oil from the reservoir up to the bearing. • The bearings are insulated to eliminate damaging shaft currents. • Sight holes and split construction allow easy inspection and replacement, without uncoupling the drive load. • Antifriction...

 Open the catalog to page 5
Pegasus MHV - Wound Rotor Induction Motor-6

• Winding RTDs • Bearing RTDs • Equipped for condition monitoring Whenever required, the following accessories • Brush Lifting Device • Surge protection (capacitors and lightning arresters) • Overspeed switches • Current transformers • Slide rails • Pressure switch • Space heaters • Condition monitoring service Resistance temperature detector. The following options are available: Inside Stator May be connected to a monitor, alarm, Thermostat Bi-metallic sensor type Klixon Surface of (normally open or normally closed) end-turns 1-3 Supplies a signal when a preset, non-adjustable temperature is...

 Open the catalog to page 6

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.