WPI Medium Voltage High Thrust with “P” Base


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HP 200 HP through 1000 HP
Speed 1800, 1200 RPM
Voltage 2300/4000V
Frequency 60 Hz.


  • Three Phase, 60 Hz, 1.15 Service Factor (Continuous on Sine Wave Power)
  • Inverter Duty (PWM) per NEMA® MG-1 Part 31 at 1.0 Service Factor
  • Standard Features: Coupling w/ Gib Key, Ball Type NRR, Drip/Splash Cover, Space Heaters (120V)
  • 5000 Frames and Above also include Mounting Provisions for bearing RTD's and Insulated Bearing Housing
  • Class F Insulation with VPI Epoxy Resin Varnish
  • Class B Temperature Rise
  • NEMA Design B Torques
  • Oversized Main Conduit Box Rotatable in 90 Degree Increments - Fully Gasketed with NPT Threaded Entrance
  • Cast Iron Conduit Box for F#449TP and Below; Steel Plate Conduit Box for F#5000
  • Designed for 40˚C Ambient Temperature
  • Designed for 3300 ft. Elevation
  • Counterclockwise (CCW) Rotation; Viewed from Top
  • Cast Iron Frame & End Brackets
  • 1045 Hollow Carbon Steel Shaft
  • Aluminum Die Cast Squirrel Cage Rotor Construction for F#449TP and Below
  • Squirrel Cage Copper or Copper Alloy Bar Rotor Construction for F#5000 and above
  • Paint System: Phenolic Rust Proof Base Plus Polyurethane Top Coat
  • Paint Color: Blue - Munsell 5PB 3/8
  • Guide Bearings: Re-Greasable with Mobil Polyrex™ EM Grease
  • Thrust Bearings: 449TP frames are Oversized Angular Contact Oil Lubricated
  • Thrust Bearings: 5000 Frame and above are Oil Lubricated Spherical Roller with Site Glass
  • Oil Requirements: 300 S.S.U. @100°F
  • Grounding Terminal Inside Main Box
  • Stainless Steel Nameplate
  • 6 Leads
  • Suitable for Inverter Use per NEMA MG-, Part 31. - 10:1 Variable Torque with NRR; 20:1 Variable Torque without NRR Using Braking in VFD
  • Precautions should be taken to eliminate or reduce shaft currents that may be imposed on the motor by VFD as stated per NEMA MG-1. Part 31
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