Catalog No - W553

256THFNA9026
Features
  • Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
  • Meets IEEE-841 standard for severe duty applications
  • C-face addition may result in non-NEMA "BA" dim. For new "BA" dim consult chart found in modification section
  • Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
  • Inpro/Seal® VBX® bearing isolators on drive end shaft extension TENV and on both ends of TEFC
  • Provisions to add stub shaft for an encoder (182T-449T, TEFC only)
  • Internal and external epoxy finish
  • MAX GUARD® Class F insulation system
  • Constant Torque speed range is listed in CT SPEED RANGE column
List Price: $3,585 USD

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General Specifications

Model : 256THFNA9026 Catalog No : W553
Part Description : 20,1800,TEFC,256T,3/60/460 Category : Severe Duty
Stock : Yes
Nameplate Specifications

Technical Specifications

Electrical Type : Squirrel Cage Inverter Rated Starting Method : Line Or Inverter
Poles : 4 Rotation : Reversible
Mounting : Rigid Base Motor Orientation : Horizontal
Drive End Bearing : Ball Opp Drive End Bearing : Ball
Frame Material : Cast Iron Shaft Type : T
Overall Length : 25.40 in Frame Length : 12.25 in
Shaft Diameter : 1.625 in Shaft Extension : 4.2 in
Assembly/Box Mounting : F1/F2 Capable UPC : 722856021267
Weight : 406.00 LB
Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) Torque (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
No Load 8.50 35.0 0.00 0.0 1,800 20.00
Full Load 24.10 100.0 59.20 100.0 1,775 20.00
Pull-Up 115.00 477.0 100.00 169.0 900 20.00
1/3 125.00 519.0 90.00 152.0 600 20.00
Break-Down 86.00 357.0 146.00 247.0 1,625 66.0 20.00
2/3 105.00 436.0 115.00 194.0 1,200 20.00
Locked-Rotor 138.00 573.0 105.00 177.0 0 40.0 20.00
Load Characteristics

  • % of Rated Load
  • Current (Amps)
  • Rated Output (KW)
  • Efficiency (%)
  • Power Factor (%)
  • Speed (RPM)
  • Temp. rise @ FL
  • Torque (ft-lb)
  • 0 %
  • 8.50
  • 0.600
  • 0.0
  • 8.5
  • 1,800
  • 0.0
  • 0.00
  • 25 %
  • 10.50
  • 4.000
  • 90.0
  • 51.0
  • 1,795
  • 0.0
  • 14.50
  • 50 %
  • 14.00
  • 8.000
  • 93.0
  • 72.0
  • 1,785
  • 0.0
  • 29.50
  • 75 %
  • 18.50
  • 12.000
  • 93.6
  • 81.0
  • 1,780
  • 0.0
  • 44.50
  • 100 %
  • 24.10
  • 16.000
  • 93.0
  • 84.0
  • 1,775
  • 65.0
  • 59.20
  • 115 %
  • 27.00
  • 18.000
  • 92.4
  • 84.5
  • 1,770
  • 85.0
  • 68.00
  • 125 %
  • 30.00
  • 20.500
  • 91.7
  • 85.0
  • 1,760
  • 105.0
  • 74.50