Catalog No - U028

256TTGN4030
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Features
  • 1.15 Service Factor on sinewave
  • 10:1 Variable torque, constant torque speed range as indicated @1.0 SF
  • Class F insulation, Ball Bearings (except as noted), All cast iron construction
  • CR200 Corona Resistant, 200°C rated magnet wire
  • Normally closed thermostats (must be connected to control circuit)
  • Meets temperature code T3B
  • Shaft slinger, UL Listed File No. E12044, CSA Certified File No. LR47504,
  • External surface treated with epoxy
  • Meets IEEE45 USCG Marine Duty,IP 54 construction
  • Contact Marathon Motors for F2 mounting, Two year warranty
Discontinued

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General Specifications

Model : 256TTGN4030 Catalog No : U028
Part Description : 20,1800,EPFC,256T,3/60/575 Category : Explosion Proof
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 : 25.27 in Frame Length : 12.25 in
Shaft Diameter : 1.625 in Shaft Extension : 4.18 in
Assembly/Box Mounting : F1 ONLY UPC : 722856022981
Weight : 379.00 LB
Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) Torque (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
No Load 9.50 38.0 0.00 0.0 1,800 20.00
1/3 135.00 540.0 92.00 155.0 200 20.00
Break-Down 86.00 344.0 145.00 244.0 1,625 67.0 20.00
Locked-Rotor 140.00 560.0 108.00 182.0 0 41.5 20.00
Full Load 25.00 100.0 59.50 100.0 1,765 20.00
2/3 115.00 460.0 105.00 176.0 1,250 20.00
Pull-Up 125.00 500.0 94.00 158.0 900 20.00
Load Characteristics

  • % of Rated Load
  • Current (Amps)
  • Rated Output (KW)
  • Efficiency (%)
  • Power Factor (%)
  • Speed (RPM)
  • Temp. Rise @ FL
  • Torque (ft-lb)
  • 0 %
  • 7.60
  • 0.500
  • 0.0
  • 7.0
  • 1,800
  • 0.0
  • 0.00
  • 25 %
  • 9.20
  • 4.500
  • 85.5
  • 48.0
  • 1,790
  • 0.0
  • 14.50
  • 50 %
  • 12.00
  • 8.500
  • 90.2
  • 70.0
  • 1,785
  • 0.0
  • 29.50
  • 75 %
  • 15.60
  • 12.500
  • 91.0
  • 79.5
  • 1,775
  • 0.0
  • 44.50
  • 100 %
  • 20.00
  • 16.500
  • 91.0
  • 82.0
  • 1,765
  • 70.0
  • 59.50
  • 115 %
  • 22.80
  • 19.000
  • 90.2
  • 84.0
  • 1,760
  • 90.0
  • 68.50
  • 125 %
  • 24.80
  • 20.500
  • 89.5
  • 84.5
  • 1,755
  • 105.0
  • 75.00