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256THFNA9101 – Marathon 7.50 HP Severe Duty Motor, 3 phase, 900 RPM, 460 V, 256T Frame, TEFC – W536

256THFNA9101 – Marathon 7.50 HP Severe Duty Motor, 3 phase, 900 RPM, 460 V, 256T Frame, TEFC – W536

256THFNA9101 Marathon IEEE 841 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 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

Marathon Motors
Regal Beloit

Original price was: $7,379.00.Current price is: $5,259.75.

Description

256THFNA9101 – Marathon 7.50 HP Severe Duty Motor, 3 phase, 900 RPM, 460 V, 256T Frame, TEFC – W536

256THFNA9101 Marathon IEEE 841 Motors

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

General Specifications

UPC: 722856021113 Weight: 340 LB
Packaged Length: 30.75 IN Packaged Width: 21.75 IN
Packaged Height: 18 IN

Nameplate Specifications

Output HP: 7.50 Hp Output KW: 5.6 kW
Frequency: 60 Hz Voltage: 460 V
Current: 11.0 A Speed: 875 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 88.5 % Power Factor: 73
Duty: Continuous Insulation Class: F
Design Code: B KVA Code: F
Frame: 256T Enclosure: Totally Enclosed Fan Cooled
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6309 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: 8 Rotation: Reversible
Resistance Main: 1.37 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: 25.40 in
Frame Length: 12.25 in Shaft Diameter: 1.625 in
Shaft Extension: 4.2 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)
2/3 48.00 436.0 85.00 189.0 600 7.50
Locked-Rotor 53.00 482.0 75.00 167.0 0 37.0 7.50
Break-Down 35.00 318.0 110.00 244.0 780 7.50
1/3 52.00 473.0 68.00 151.0 300 7.50
Full Load 11.00 100.0 45.00 100.0 875 7.50
Pull-Up 50.00 455.0 72.00 160.0 450 7.50
No Load 6.50 59.0 0.00 0.0 900 7.50

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 6.50 7.00 8.00 9.50 11.00 12.50 13.50
Rated Output (KW) 0.50 1.50 3.00 4.50 6.50 7.50 8.00
Efficiency (%) 0.0 80.0 86.5 88.5 88.5 87.5 87.5
Power Factor (%) 6.0 31.5 50.5 63.0 73.0 73.0 74.0
Speed (RPM) 900 895 890 880 875 870 865
Temp. Rise @ FL 0.0 0.0 0.0 0.0 45.0 60.0 75.0
Torque (ft-lbs) 0.00 11.00 22.00 33.50 45.00 52.00 57.00

Marathon Motors
Regal Beloit

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