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449TTFS6528 – Marathon 250 HP Severe Duty Motor, 3 phase, 1800 RPM, 460 V, 449T Frame, TEFC – E771

449TTFS6528 – Marathon 250 HP Severe Duty Motor, 3 phase, 1800 RPM, 460 V, 449T Frame, TEFC – E771

449TTFS6528 Marathon Other Severe Duty Motors

Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.

  • Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
  • Meets IEEE45 USCG Marine Duty, IP54 Construction, Meets Ford EM1 Automotive Duty Specification
  • Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
  • Provisions to add stub shaft for an encoder (182T-449T, TEFC only)
  • Internal and external epoxy paint
  • MAX GUARD® Class H insulation system
  • Constant Torque speed range is listed in CT SPEED RANGE column
  • 1.15 Service Factor on sinewave, 1.0 Service Factor on IGBT power
  • Bearing caps (254T and larger), Precision balanced to .08”/sec

Marathon Motors
Regal Beloit

Original price was: $41,039.00.Current price is: $29,252.60.

Description

449TTFS6528 – Marathon 250 HP Severe Duty Motor, 3 phase, 1800 RPM, 460 V, 449T Frame, TEFC – E771

449TTFS6528 Marathon Other Severe Duty Motors

Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.

General Specifications

UPC: 722856020727 Weight: 0 LB
Packaged Length: 56 IN Packaged Width: 46 IN
Packaged Height: 32.05 IN

Nameplate Specifications

Output HP: 250 Hp Output KW: 187.0 kW
Frequency: 60 Hz Voltage: 460 V
Current: 285.0 A Speed: 1785 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 96.5 % Power Factor: 86
Duty: Continuous Insulation Class: H
Design Code: B KVA Code: G
Frame: 447/449T Enclosure: Totally Enclosed Fan Cooled
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6319 Opp Drive End Bearing Size: 6318
UL: Recognized CSA: Y
CE: Y IP Code: 54

Technical Specifications

Electrical Type: Squirrel Cage Inverter Rated Starting Method: Line Or Inverter
Poles: 4 Rotation: Reversible
Resistance Main: .0107 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Cast Iron
Shaft Type: T Overall Length: 51.84 in
Frame Length: 28.75 in Shaft Diameter: 3.375 in
Shaft Extension: 8.81 in Assembly/Box Mounting: F1/F2 Capable

Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
Full Load 285.00 100.0 736.00 100.0 1,785 250.00
2/3 1,650.00 579.0 1,450.00 197.0 1,200 250.00
No Load 87.00 31.0 0.00 0.0 1,800 250.00
1/3 1,775.00 623.0 1,200.00 163.0 600 250.00
Pull-Up 1,725.00 605.0 1,250.00 170.0 900 250.00
Break-Down 1,100.00 386.0 1,825.00 248.0 1,725 60.0 250.00
Locked-Rotor 1,825.00 640.0 1,450.00 197.0 0 31.0 250.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 87.00 110.00 158.00 217.00 285.00 322.00 352.00
Rated Output (KW) 3.50 50.00 97.50 145.00 193.00 223.00 242.00
Efficiency (%) 0.0 93.0 95.8 96.5 96.5 96.5 96.2
Power Factor (%) 4.5 57.0 77.0 83.5 86.0 86.5 86.5
Speed (RPM) 1,800 1,796 1,794 1,790 1,785 1,782 1,780
Temp. Rise @ FL 0.0 40.0 30.0 0.0 65.0 85.0 105.0
Torque (ft-lbs) 0.00 183.00 366.00 550.00 736.00 846.00 920.00

Marathon Motors
Regal Beloit

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