Marathon 20 HP Vertical Solid Shaft P-Base Motor, 3 phase, 3600 RPM, 230/460 V, 256HPV Frame, TEFC - M892A

Catalog #:M892A
Part #:256TTFNA14016
  • Normal thrust
  • Class F insulation
  • 1.15 Service Factor
  • Suitable for 230 volt part winding start through 100 HP (dual voltage motors)
  • Heavy duty lifting lugs
  • Drip cover/canopy cap included
  • UL Recognized and CSA Certified
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General Specifications

UPC: 722856037022 Weight: 403.00 LB
Packaged Length: 30.75 IN Packaged Width: 21.75 IN
Packaged Height: 18 IN

Nameplate Specifications

Output HP: 20 Hp Output KW: 14.9 kW
Frequency: 60 Hz Voltage: 230/460 V
Current: 47.0/23.5 A Speed: 3530 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 90.2 % Power Factor: 87.5
Duty: Continuous Insulation Class: F
Design Code: B KVA Code: G
Frame: 256HPV 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: 43

Technical Specifications

Electrical Type: Squirrel Cage Induction Run Starting Method: Across The Line
Poles: 2 Rotation: Reversible
Resistance Main: .398 Ohms Mounting: Round
Motor Orientation: Shaft Down Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Cast Iron
Shaft Type: HP Overall Length: 28.26 in
Frame Length: 12.25 in Shaft Diameter: 1.625 in
Shaft Extension: 2.75 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)
No Load 6.80 29.0 0.00 0.0 3,600 20.00
Locked-Rotor 145.00 617.0 52.00 173.0 0 36.5 20.00
1/3 140.00 596.0 45.00 150.0 1,200 20.00
2/3 125.00 532.0 57.00 190.0 2,400 20.00
Full Load 24.00 102.0 30.00 100.0 3,530 20.00
Pull-Up 135.00 574.0 50.00 167.0 1,800 20.00
Break-Down 90.00 383.0 87.00 290.0 3,200 70.0 20.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 6.80 9.00 13.00 18.00 23.50 27.00 29.00
Rated Output (KW) 1.00 4.50 8.50 12.50 16.50 19.00 21.00
Efficiency (%) 0.0 86.5 90.2 91.0 90.2 90.2 89.5
Power Factor (%) 9.5 60.0 78.5 85.0 87.5 88.0 88.0
Speed (RPM) 3,600 3,585 3,570 3,550 3,530 3,520 3,510
Temp. Rise @ FL 0.0 0.0 0.0 0.0 55.0 75.0 95.0
Torque (ft-lbs) 0.00 7.40 14.80 22.20 30.00 34.50 37.50
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