Description
256TTFCD6028 – Marathon 20 HP General Purpose Motor, 3 phase, 1800 RPM, 230/460 V, 256TC Frame, TEFC – GT1225A
256TTFCD6028 Marathon Three Phase TEFC Motors
Please advise CFM, static pressure, voltage, phase, and/or horsepower on specifications, drawings, or existing equipment for an accurate quote.
General Specifications
UPC: | 722856062406 | Weight: | 330 LB |
Packaged Length: | 31.77 IN | Packaged Width: | 28.03 IN |
Packaged Height: | 28.14 IN |
Nameplate Specifications
Output HP: | 20 Hp | Output KW: | 14.9 kW |
Frequency: | 60 Hz | Voltage: | 230/460 V |
Current: | 48.5/24.2 A | Speed: | 1768 rpm |
Service Factor: | 1.15 | Phase: | 3 |
Efficiency: | 93 % | Power Factor: | 83.5 |
Duty: | Continuous | Insulation Class: | F |
Design Code: | B | KVA Code: | G |
Frame: | 256TC | Enclosure: | Totally Enclosed Fan Cooled |
Thermal Protection: | No | Ambient Temperature: | 40 °C |
Drive End Bearing Size: | 6309 | Opp Drive End Bearing Size: | 6209 |
UL: | Listed | CSA: | Y |
CE: | Y | IP Code: | 43 |
Hazardous Location: | DIVISION 2 T2B |
Technical Specifications
Electrical Type: | Squirrel Cage Inverter Rated | Starting Method: | Line Or Inverter |
Poles: | 4 | Rotation: | Selective Clockwise |
Resistance Main: | .513 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: | 26.39 in |
Frame Length: | 11.73 in | Shaft Diameter: | 1.626 in |
Shaft Extension: | 4 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) |
Pull-Up | 131.00 | 541.0 | 99.00 | 167.0 | 900 | 20.00 | ||
Break-Down | 81.00 | 335.0 | 146.00 | 246.0 | 1,618 | 69.0 | 20.00 | |
2/3 | 120.00 | 496.0 | 124.00 | 209.0 | 1,200 | 20.00 | ||
1/3 | 138.00 | 570.0 | 97.00 | 163.0 | 600 | 20.00 | ||
Locked-Rotor | 144.00 | 595.0 | 119.00 | 200.0 | 0 | 42.0 | 20.00 | |
No Load | 10.00 | 41.0 | 0.00 | 0.0 | 1,800 | 5.0 | 20.00 | |
Full Load | 24.20 | 100.0 | 59.40 | 100.0 | 1,768 | 83.5 | 20.00 |
Load Characteristics
% of Rated Load | 0 % | 25 % | 50 % | 75 % | 100 % | 115 % | 125 % |
Current (Amps) | 10.00 | 11.20 | 14.80 | 19.00 | 24.20 | 27.80 | 30.00 |
Rated Output (KW) | 0.50 | 4.30 | 8.10 | 12.00 | 16.10 | 18.60 | 20.40 |
Efficiency (%) | 0.0 | 86.5 | 91.7 | 93.0 | 93.0 | 92.4 | 91.7 |
Power Factor (%) | 5.0 | 46.5 | 69.0 | 79.0 | 83.5 | 84.5 | 85.0 |
Speed (RPM) | 1,800 | 1,792 | 1,785 | 1,778 | 1,768 | 1,762 | 1,760 |
Temp. Rise @ FL | 0.0 | 0.0 | 0.0 | 0.0 | 60.0 | 80.0 | 100.0 |
Torque (ft-lbs) | 0.00 | 14.60 | 29.50 | 44.40 | 59.40 | 68.50 | 74.70 |