Marathon 25 HP Severe Duty Motor, 3 phase, 1800 RPM, 230/460 V, 284TV Frame, TEAO - U1873

Catalog #:U1873
Part #:284TTTNA16540
  • Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
  • Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
  • Internal and external epoxy paint
  • MAX GUARD® Class F insulation system
  • 1.15 Service Factor on sinewave, 1.0 Service Factor on IGBT power
  • Rated 60/50 hertz, 190/380 or 380 volt at next lower horsepower
  • Extended grease tubes, Regreasable in service
  • T-drains provided for effective drainage (Installed in both endshields)
  • Suitable for all angle mounting
  • Suitable for 20:1 VT and 20:1 CT on VFD
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General Specifications

UPC: 722856132253 Weight: 443.00 LB
Packaged Length: 35 IN Packaged Width: 26 IN
Packaged Height: 24.33 IN

Nameplate Specifications

Output HP: 25 Hp Output KW: 18.7 kW
Frequency: 60/50 Hz Voltage: 230/460 V
Current: 62.0/31.0 A Speed: 1775 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 93.6 % Power Factor: 81
Duty: Continuous Insulation Class: F
Design Code: B KVA Code: G
Frame: 284TV Enclosure: Totally Enclosed Air Over
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6311 Opp Drive End Bearing Size: 6210
UL: Recognized CSA: Y
CE: Y IP Code: 56

Technical Specifications

Electrical Type: Squirrel Cage Inverter Rated Starting Method: Line Or Inverter
Poles: 4 Rotation: Reversible
Resistance Main: .251 Ohms Mounting: Rigid base
Motor Orientation: Horizontal Or Up Or Down Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Cast Iron
Shaft Type: T Overall Length: 23.42 in
Frame Length: 12.75 in Shaft Diameter: 1.875 in
Shaft Extension: 4.83 in Assembly/Box Mounting: F1/F2 CAPABLE

Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (LB-FT) Torque (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
Full Load 31.00 100.0 74.00 100.0 1,774 25.00
Locked-Rotor 181.00 584.0 140.00 189.0 0 33.0 25.00
1/3 175.00 565.0 125.00 169.0 600 25.00
Break-Down 125.00 403.0 215.00 291.0 1,675 25.00
2/3 150.00 484.0 150.00 203.0 1,200 25.00
Pull-Up 165.00 532.0 130.00 176.0 900 25.00
No Load 13.50 44.0 0.00 0.0 1,800 25.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 13.50 15.50 19.50 25.00 31.00 34.50 37.50
Rated Output (KW) 0.50 5.00 10.00 15.00 20.00 23.00 25.00
Efficiency (%) 0.0 88.5 93.0 93.6 93.6 93.6 93.0
Power Factor (%) 5.5 43.0 65.0 75.0 81.0 82.0 82.5
Speed (RPM) 1,800 1,795 1,785 1,780 1,775 1,765 1,760
Temp. Rise @ FL 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Torque (LB-FT) 0.00 18.50 37.00 55.50 74.00 85.50 93.00
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